Trane US CONT8243 Color Touchscreen Wi-Fi User Manual

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Trane XL824
Connected Control
TCONT824 Installation Guide
WORKS WITH
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit.
These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with
the installation. Should further information be desired or should particular problems arise which are not covered sufficiently
for the purchaser’s purposes, the matter should be referred to your installing dealer or local distributor.
18-HD72D1-11-EN
Installation Guide
Contents
1. Safety....................................................................... 2
2. Product Specifications........................................... 3
3. General Information................................................ 3
3.1 Overview........................................................ 3
3.2 Contents......................................................... 3
3.3 Accessories.................................................... 3
4. Installation............................................................... 4
4.1 Location.......................................................... 4
4.2 Network Connections..................................... 4
4.3 Mounting........................................................ 4
4.4 Wiring............................................................. 5
4.5 Heat/Cool Applications................................... 7
4.6 Heat Pump Applications............................... 16
4.7 Dual Fuel Applications................................. 23
5. System Setup........................................................ 26
5.1 Power-Up Sequence.................................... 26
5.2 Guided Setup Wizards................................. 26
5.3 Smart Optimization....................................... 26
5.4 Installer Setup Screens................................ 27
5.4.1 Group 1 Standard Settings........................... 27
5.4.2 Group 2 Equipment Settings........................ 27
5.4.3 Group 3 Sensor Settings.............................. 27
5.4.4 Group 4 Accessories Settings...................... 28
5.4.5 Group 5 Comfort Settings............................ 29
5.4.6 Group 6 Airflow Settings............................... 30
5.4.7 Group 7 Lockout Settings............................. 31
5.5 Service Reminders....................................... 31
5.6 Dealer Code................................................. 31
5.7 Software Updates......................................... 31
6. Basic Operation.................................................... 32
6.1 PI Control..................................................... 32
6.2 Load Value - Heating.................................... 32
1.
Safety
NOTE: Use 18-gauge color-coded thermostat cable for
proper wiring. Shielded cable is not typically required.
Keep this wiring at least one foot away from large inductive
loads such as Electronic Air Cleaners, motors, line starters,
lighting ballasts and large distribution panels.
! WARNING
▲
This information is intended for use by individuals
possessing adequate backgrounds of electrical and
mechanical experience. Any attempt to repair a central
air conditioning product may result in personal injury and/
or property damage. The manufacturer or seller cannot
be responsible for the interpretation of this information,
nor can it assume any liability in connection with its use.
7.
8.
9.
10.
6.3 Load Value - Cooling.................................... 32
6.4 Duty Cycles.................................................. 32
6.5 Overshoot Clamp......................................... 32
6.6 Stage Thresholds......................................... 33
6.7 Stage Inhibits............................................... 33
6.8 Fan Mode..................................................... 34
6.9 Air Cleaner Mode......................................... 34
Advanced Operation............................................. 35
7.1 Control Response Rate ............................... 35
7.2 Dehumidification........................................... 35
7.3 Dehumidifier Operation................................ 35
7.4 Dual Fuel Operation..................................... 35
7.5 Lockouts....................................................... 36
7.6 Humidifier Operation.................................... 37
7.7 Recovery...................................................... 37
7.7.1 Aggressive Recovery................................... 37
7.7.2 Heating Aggressive Recovery...................... 37
7.8 Ventilation Operation.................................... 37
7.9 Warm Air Discharge..................................... 37
7.10 Wet Heat (Hydronic) Operation.................... 37
Diagnostic Tools.................................................... 38
8.1 Test Modes................................................... 38
8.2 Save Logs.................................................... 38
8.3 Diagnostics................................................... 38
8.4 History.......................................................... 38
8.5 System Report............................................. 39
8.6 Restore Factory Defaults.............................. 39
Troubleshooting.................................................... 40
Notices................................................................... 41
10.1 FCC Notice................................................... 41
10.2 IC Notice...................................................... 41
Failure to follow these wiring practices may introduce
electrical interference (noise) which can cause erratic
system operation.
All unused thermostat wire to be grounded at indoor unit
chassis ground only. Shielded cable may be required if the
above wiring guidelines cannot be met. Ground only one
end of the shield to the system chassis.
! WARNING
▲
LIVE ELECTRICAL COMPONENTS!
During installation, testing, servicing, and troubleshooting
of this product, it may be necessary to work with live
electrical components. Failure to follow all electrical safety
precautions when exposed to live electrical components
could result in death or serious injury.
18-HD72D1-11-EN
824 Programmable Wi-Fi Comfort Control
2.
Product Specifications
SPECIFICATION DESCRIPTION
Product Model
Product
Size
Configurations
Maximum Number of Stages
Storage/Operating Temperature
Input Power
Power Consumption
Wire Usage
System Modes
Fan Modes
TCONT824
XL 824 Connected Control
5-1/2” x 3-3/8” x 1” (WxHxD)
Heat Pump, Heat/Cool, Dual Fuel, Heat Only, Cooling Only
5 Stages Heat, 2 Stages Cooling
-40°F to 175°F, 5% to 95% RH non-condensing
24VAC
7VA*
18 AWG
Auto, Heating, Cooling, Off, Emergency Heat
Auto, On, Circulate
Cooling Setpoint Temperature Range
60°F to 99°F, 1°F resolution
Heating Setpoint Temperature Range
55°F to 90°F, 1°F resolution
Indoor Temperature Display Range
-40°F to 122°F
Outdoor Temperature Display Range
-40°F to 140°F
Indoor Humidity Display Range
0% to 100%, 1% resolution
Minimum Cycle Off Time Delay
Compressor: 5 minutes, Indoor Heat: 1 minute
*On every application, 24VAC loads should be reviewed to be sure the indoor unit control power transformer is adequately sized.
3.
General Information
3.1
Overview
The 824 Connected Control has a 4.3” color touch screen
and offers a full-featured and easy-to-use interface. From
individual daily schedules to remote access, the 824 is one
of the most advanced 24VAC Controls available.
3.2
—
—
—
—
—
—
—
—
3.3
Accessories
— Wired Remote Indoor Sensor (ZZSENSAL0400AA)
— Wired Remote Outdoor Sensor (BAYSEN01ATEMPA)
— Bonnet Thermostat model THT1248
(BAYSEN03ATEMPAA)
Contents
1-Control
1-Sub-base
2-#6 18X1 Phillips slotted head mounting screws
2-#6x1 Nylon Drywall Anchors
1-Installation Guide
1-Quick Start Guide
RJ-45 Holder and Screw
1-USB “On-the Go” Adapter Cable (Micro USB plug to
Standard USB receptacle)
18-HD72D1-11-EN
Installation Guide
4.
Installation
4.1
Location
4.2
The 824 is designed for installation in climate controlled
living spaces. Place the unit in a central location with good
circulation.
For proper temperature sensing, avoid exposing the 824 to
heat radiated from lamps, sun light, fireplaces or any other
radiant heat source.
Avoid locations close to windows, behind doors or alcoves
with poor air circulation, adjoining outside walls, or doors
that lead to the outside.
Select a location that prevents the 824 from being directly
exposed to air currents from supply registers or ceiling fans.
Mount the Control on a section of interior wall that does not
contain hot or cold water pipes or duct work.
Important: The 824 Control utilizes a 4.3” color touch
screen. This screen generates heat which is vented out
the top of the Control utilizing natural convection. If an air
source is directed at or from above, heat from the screen
can be trapped within the Control and can cause the indoor
temperature to be biased. (Refer to Figure 1 on page 4.)
Figure 1. PLACEMENT OF THE 824
Correct
Placement
Natural heat
dissipation
from the
Touch Screen
2 FEET
Optimum
Zone
5 FEET
Incorrect
Placement
Onboard
Thermistor
Ceiling Fan
Heat from the screen may be trapped
within the body of the Control by an
external top-down airflow source, such
as a ceiling fan.
Network Connections
To take advantage of the full range of features on the 824
Control, it should be connected to the Internet. This is
possible using either a wireless or a wired connection.
Wireless Connections
If the 824 Control will be connected to the Internet using the
built-in wireless feature, choose a mounting location that
ensures adequate signal strength from the Internet router.
Tips to Help Maximize Signal Strength:
— Do not mount the Control more than 30 feet from the
wireless router
— There should be no more than three interior walls
between the Control and the router.
— Do not mount the Control in areas where
electromagnetic emissions from other devices,
appliances or wiring can interfere with the Control’s
communication. (i.e. wireless phones, security
systems, wireless Internet cameras).
— Do not mount the Control in recessed areas,
near metal objects, or near structures. (i.e. doors,
appliances, entertainment centers or shelving units).
— Do not mount the Control closer than 2 inches to any
pipes, duct work, or other metal obstructions.
— Do not have metal obstructions, concrete or brick
walls between the Control and the router.
Ceiling Fan
Incorrect
Refer to the 824 User Guide for additional information on
Placement
connecting the 824 to the Internet.
Wired Connections
HeatThe
from824
the screen
maymay
be trapped
Control
be connected to the Internet using its
within the body of the Control by an
built-in
RJ-45
connector.
When using a wired connection,
external top-down airflow source, such
as a ceiling
fan.
verify that a CAT
5 or better
Ethernet cable with a male
RJ-45 connector is present from the router to the Control.
4.3
Mounting
Follow these steps to mount the 824 Control to the wall.
1. Turn OFF all power to heating and cooling equipment.
The onboard thermistor may be biased
2. If
thermostat
is being replaced:
byan
thisexisting
heat causing
the displayed
indoor temperature to be elevated.
a. Remove the existing thermostat from the wall.
b. Record color and terminal marking of each wire.
c. Disconnect the wires from the existing thermostat
being careful not to allow them to fall back into
the wall.
3. Carefully pry the Sub-base away from the 824 Control
using a small flat-blade screwdriver. Note that the
tight fit is normal and ensures that the Control is held
securely to the Sub-base when mounted on the wall.
4. Route the wires through the opening on the Sub-base.
5. If using a wired Internet connection, route the Ethernet
cable through the opening.
The onboard thermistor may be biased
by this heat causing the displayed
indoor temperature to be elevated.
18-HD72D1-11-EN
This side mounts to wall
824 Programmable Wi-Fi Comfort Control
6. Place the Sub-base against the wall in the desired
location and mark the wall through the mounting
holes. If you are using a wired Internet connection, be
sure to mark the cutout for the RJ-45 connector (see
Figure 2 on page 5).
7. Drill the holes in the wall where marked.
If you are using a wireless Internet connection, skip to
step 9.
8. When using a wired Ethernet connection, follow these
step and refer to Figure 3 on page 5.
a. With the Sub-base and RJ-45 holder oriented as
shown, press the holder into the Sub-base.
b. Slide the holder to the right so it snaps in place.
c. Secure the holder with the provided screw.
d. Insert the RJ-45 Connector into the RJ-45
holder until it snaps into place.
9. Mount the Sub-base to the wall using included
mounting screws and drywall anchors. An optional
mounting hole is available for more secure mounting,
if needed. Make sure all wires extend through the hole
in the Sub-base see Figure 4 on page 5.
4.4
Wiring
Figure 3. ATTACH RJ-45 HOLDER TO SUB-BASE
RS1 RS1 ODT ODT W3 W2 W1 BK
Y2
Y1
B/C RH RC AUX2 AUX2 AUX1 AUX1
Thermostat
Wires
Mounting Holes
Wa RJ-45
ll Plug
Optional Mounting Hole
Figure 4. MOUNT THE SUB-BASE TO THE WALL
Thermostat Wiring
1. Adjust the length and position of each wire to reach
the proper terminal on the connector block of the
Sub-base. Strip 1/4” of insulation from each wire.
Do not allow adjacent wires to short together when
connected.
2. Match and connect control wires to the proper
terminals on the connector block. Refer to Field Wiring
Diagrams included in this document.
3. Push excess wire back into the wall and seal the
hole to prevent air leaks. NOTE: Air Leaks in the wall
Wa
ll
Ethernet
Wiring
Figure 2. MARK THE MOUNTING HOLES
RS1 RS1 ODT ODT W3 W2 W1 BK
Y2
Y1
B/C RH RC AUX2 AUX2 AUX1 AUX1
Thermostat
Wires
RJ-45
Plug
Mounting Holes
Optional Mounting Hole
Thermostat Wiring
behind the Control can cause improper operation.
4. Attach the Control to the Sub-base.
5. Turn ON power to the heating and coolingalequipment.
18-HD72D1-11-EN
Ethernet
Wiring
Installation Guide
Field Wiring Connection Diagrams
Heat/Cool Diagrams
PAGE
DIAGRAM
DESCRIPTION
DIAGRAM 1
1 OR 2 STAGE COOLING W/TAM7 MODEL VARIABLE SPEED AIR HANDLER
DIAGRAM 2
1 STAGE COOLING W/GAM5A OR TAM4 MODEL AIR HANDLER
DIAGRAM 3
1 STAGE COOLING W/GAM5B MODEL AIR HANDLER
DIAGRAM 4
2 STAGE COOLING W/GAM5B MODEL AIR HANDLER
DIAGRAM 5
1 STAGE COOLING W/GAF2-S MODEL AIR HANDLER
DIAGRAM 6
1 STAGE COOLING W/GAF2-36M MODEL AIR HANDLER
10
DIAGRAM 7
1 STAGE COOLING W/GAT2 & GAM2 MODEL AIR HANDLER
10
DIAGRAM 8
1 STAGE COOLING W/TEM3 MODEL AIR HANDLER
11
DIAGRAM 9
1 STAGE COOLING W/TEM4 AIR HANDLER
11
DIAGRAM 10
1 OR 2 STAGE COOLING W/TEM6 AIR HANDLER
12
DIAGRAM 11
1 STAGE W/COOLING GAS FURNACE
12
DIAGRAM 12
1 OR 2 STAGE COOLING W/VARIABLE SPEED GAS FURNACE
13
DIAGRAM 13
1 OR 2 STAGE COOLING WITH S9V2 FURNACE
13
DIAGRAM 14
PACKAGE 1 OR 2 STAGE HEAT/COOL W/VARIABLE SPEED BLOWER
14
DIAGRAM 15
PACKAGE 1 STAGE HEAT/COOL W/NON-VARIABLE SPEED BLOWER
14
DIAGRAM 16
AMERISTAR 1 STAGE COOLING
Heat Pump Diagrams
PAGE
DIAGRAM
DESCRIPTION
15
DIAGRAM 17
1 OR 2 STAGE HEAT PUMP W/TAM7 MODEL AIR HANDLER
15
DIAGRAM 18
1 STAGE HEAT PUMP W/GAM5A OR TAM4 MODEL AIR HANDLER
16
DIAGRAM 19
1 STAGE HEAT PUMP W/GAM5B MODEL AIR HANDLER
16
DIAGRAM 20
2 STAGE HEAT PUMP W/GAM5B MODEL AIR HANDLER
17
DIAGRAM 21
1 STAGE HEAT PUMP W/GAF2-S MODEL AIR HANDLER
17
DIAGRAM 22
1 STAGE HEAT PUMP W/GAF2-36M MODEL AIR HANDLER
18
DIAGRAM 23
1 STAGE HEAT PUMP W/GAT2 & GAM2 MODEL AIR HANDLER
18
DIAGRAM 24
1 STAGE HEAT PUMP W/TEM3 MODEL AIR HANDLER
19
DIAGRAM 25
1 STAGE HEAT PUMP W/TEM4 AIR HANDLER
19
DIAGRAM 26
1 OR 2 STAGE HEAT PUMP W/TEM6 VARIABLE SPEED AIR HANDLER
20
DIAGRAM 27
PACKAGE 1 OR 2 STAGE HEAT PUMP W/VARIABLE SPEED BLOWER
20
DIAGRAM 28
PACKAGE 1 STAGE HEAT PUMP W/NON-VARIABLE SPEED BLOWER
21
DIAGRAM 29
AMERISTAR 1 STAGE HEAT PUMP
Dual Fuel Diagrams
PAGE
DIAGRAM
DESCRIPTION
22
DIAGRAM 30
1 OR 2 STAGE HEAT PUMP W/VARIABLE SPEED GAS FURNACE
22
DIAGRAM 31
1 STAGE HEAT PUMP W/NON-VARIABLE SPEED GAS FURNACE
23
DIAGRAM 32
1 OR 2 STAGE HEAT PUMP W/S9V2 FURNACE
23
DIAGRAM 33
PACKAGE 1 OR 2 STAGE DUAL FUEL W/VARIABLE SPEED BLOWER
18-HD72D1-11-EN
4.5
824 Programmable Wi-Fi Comfort Control
Heat/Cool Applications
1- 1 OR1 2- 1
STAGE
COOLING
W/TAM7
MODEL
VARIABLE
SPEED
AIR
HANDLER
Diagram
or 2 Stage
Cooling
w/TAM7
Model
Variable
Speed
Air
Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
OUTDOOR UNIT
AUX2
INDOOR UNIT
RC
R4
B/C
24VAC HOT
RH
COMMON
SOV
COOLING
FAN
HEATING
ODT
Y1 3
YI
Y2
YO2
Y2
BK
W1
BK1
W2
W1
W3
W2
ODT
W3
Y2 4
Optional
Outdoor
Sensor*
ODT
RS1
RS
Y/Y1
Optional
Remote
Sensor*
RS1
NOTES:
1. Cut and remove the BK jumper at the indoor unit
AFC Board
2. YI and YO connections must be made as shown
for freeze protection and internally mounted
condensate overflow circuits to function properly
3. If a 3rd party overflow condensate switches are
installed, wire between Y1 of the 824 and YI of the
airflow control board
4. R and Y2 connections at outdoor unit are required
only for two stage units
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
2- 1 STAGE COOLING W/GAM5A OR TAM4 MODEL AIR HANDLER
Diagram 2 - 1 Stage Cooling w/GAM5A or TAM4 Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
INDOOR UNIT
RC
24VAC HOT
RH
COMMON
SOV
COOLING
B/C
Y1 2
YI
Y2
YO1
BK
W1
HEATING
W2
W1
W3
W2
ODT
W3
ODT
RS
FAN
ODT
OUTDOOR UNIT
NOTES:
1. YI and YO connections must be made as shown for
freeze protection and internally mounted condensate
overflow circuits to function properly
2. If 3rd party overflow condensate switches are
installed, wire between Y1 of the 824 and YI of the
air handler
RS1
RS1
18-HD72D1-11-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
Installation Guide
Diagram
3 - 1 COOLING
Stage Cooling
w/GAM5B
Air Handler
3- 1 STAGE
W/GAM5B
MODELModel
AIR HANDLER
824 COMFORT CONTROL
AUX 1
AUX1
NOTES:
1. Y terminal must be connected at indoor unit for
selected compressor air flow
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
RC
RH
COMMON
SOV
COOLING
B/C
Y1
Y1
OUTDOOR UNIT
Y2
FAN
BK
HEATING
ODT
W1
W2
W1
W3
W2
ODT
W3
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
4- 2 STAGE
W/GAM5B
MODELModel
AIR HANDLER
Diagram
4 - 2 COOLING
Stage Cooling
w/GAM5B
Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
24VAC HOT
RC
COMMON
B/C
INDOOR UNIT
OUTDOOR UNIT
NOTES:
1. Y terminal must be connected at indoor unit for
selected compressor air flow
RH
SOV
COOLING
Y1
Y2
FAN
BK
HEATING
ODT
W2
W1
W3
W2
ODT
W3
RS1
RS1
Y2
W1
ODT
RS
Y1
Y1
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
18-HD72D1-11-EN
824 Programmable Wi-Fi Comfort Control
Diagram
5 - 1 COOLING
Stage Cooling
w/GAF2-S
Air Handler
5- 1 STAGE
W/GAF2-S
MODELModel
AIR HANDLER
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
RC
24VAC HOT
INDOOR UNIT
OUTDOOR UNIT
RH
COMMON
B/C
SOV
Y1
COOLING
Y2
FAN
BK
W1
HEATING
W2
W3
ODT
ODT
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
6- 1 STAGE
W/GAF2-36M
MODELModel
AIR HANDLER
Diagram
6 - 1 COOLING
Stage Cooling
w/GAF2-36M
Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
RC
24VAC HOT
INDOOR UNIT
R3
OUTDOOR UNIT
RH
COMMON
B/C
SOV
COOLING
Y1 2
YI
Y2
YO 1
FAN
NOTES:
1. YI and YO connections must be made as shown for
freeze protection and internally mounted condensate
overflow circuits to function properly
2. If 3rd party overflow condensate switches are
installed, wire between Y1 of the 824 and YI of the
air handler
3. Jumper R and O must be installed for blower to run
at cooling airflow
BK
W1
HEATING
W2
W3
ODT
ODT
ODT
RS
RS1
RS1
18-HD72D1-11-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
Installation Guide
7- 1 STAGE COOLING W/GAT2 & GAM2 MODEL AIR HANDLER
Diagram 7 - 1 Stage Cooling w/GAT2 & GAM2 Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
24VAC HOT
RC
INDOOR UNIT
OUTDOOR UNIT
RH
COMMON
SOV
COOLING
B/C
Y1
Y2
FAN
BK
HEATING
ODT
W1
W1
W2
W2
W3
W3
ODT
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
8- 1 STAGE COOLING W/TEM3 MODEL AIR HANDLER
Diagram 8 - 1 Stage Cooling w/TEM3 Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
24VAC HOT
RC
INDOOR UNIT
OUTDOOR UNIT
RH
COMMON
SOV
COOLING
B/C
Y1
Y2
FAN
HEATING
BK
W1
W1
W2
W2
W3
ODT
ODT
ODT
RS
RS1
RS1
10
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
18-HD72D1-11-EN
824 Programmable Wi-Fi Comfort Control
9-1 STAGE COOLING W/TEM4
Diagram 9 - 1 Stage Cooling w/TEM4 Air Handler
824 COMFORT CONTROL
AUX1
AUX 1
AUX1
AUX2
AUX 2
24VAC HOT
AUX2
INDOOR UNIT
RC
OUTDOOR UNIT
RH
B/C
COMMON
SOV
Y1
COOLING
Y2
FAN
BK
W1
HEATING
W2
W1
W3
W2
ODT
ODT
Optional
Outdoor
Sensor*
ODT
RS1
RS
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
10-1 OR 2 STAGE COOLING W/TEM6
Diagram 10 - 1 or 2 Stage Cooling w/TEM6 Air Handler
824 COMFORT CONTROL
AUX 1
NOTES:
1. Cut and remove the BK jumper at the indoor unit
2. R & Y2 connections at outdoor are only required for
two stage units
AUX1
AUX1
AUX 2
AUX2
AUX2
INDOOR UNIT
RC
R2
Y1
Y1
Y1
Y2
Y2
Y2 2
24VAC HOT
OUTDOOR UNIT
RH
COMMON
SOV
COOLING
FAN
B/C
BK
HEATING
ODT
W1
W2
W1
W3
W2
ODT
W3
ODT
RS
RS1
RS1
18-HD72D1-11-EN
BK1
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
11
Installation Guide
11- 1 STAGE COOLING W/GAS FURNACE
Diagram 11 - 1 Stage w/Cooling Gas Furnace
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
RC
OUTDOOR UNIT
RH
COMMON
SOV
COOLING
B/C
Y1
Y2
FAN
BK
HEATING
ODT
W1
W2
W1
W3
W2
ODT
W3
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
12- 1 OR 2 STAGE COOLING W/VARIABLE SPEED GAS FURNACE
Diagram 12 - 1 or 2 Stage Cooling w/Variable Speed Gas Furnace
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
INDOOR UNIT
OUTDOOR UNIT
AUX2
24VAC HOT
R2
B/C
RC
NOTES:
1. Cut and remove the factory installed BK jumper at
the indoor unit IFC Board (some units may require
DIP switch settings)
2. R & Y2 connections at outdoor are only required for
two stage units
RH
COMMON
SOV
COOLING
Y1
Y2
FAN
HEATING
ODT
Y/Y2
BK
W1
BK1
W2
W1
W3
W2
RS1
RS1
12
Y/Y1
Y2 2
ODT
ODT
RS
Y1/Ylo
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
18-HD72D1-11-EN
824 Programmable Wi-Fi Comfort Control
13-1 OR 2 STAGE COOLING w/S9V2 FURNACE
Diagram
13 - 1 or 2 Stage Cooling with S9V2 Furnace
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
RC
OUTDOOR UNIT
R 4
RH
COMMON
SOV
COOLING
FAN
B/C
ODT
Y1/Ylo
Y2 3
Y/Y2
Y1
Y2
BK1
W1
W2
W1
W3
W2
ODT
ODT
RS
Y13
BK
HEATING
B/C
NOTES:
1. Cut and remove the BK jumper at the indoor unit
2. Remove the factory Y1-O jumper on the indoor unit
for heat pump systems for proper LED readout
3. Y1 and Y2 wiring from the 824 must connect to Y1
and Y2 of the indoor unit IFC for proper air flow and
LED read out
4. R connection at outdoor unit is required only for two
compressor/two stage units
RS1
RS1
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
14- PACKAGE 1 OR 2 STAGE HEAT/COOL w/VARIABLE SPEED BLOWER
Diagram 14 - Package 1 or 2 Stage Heat/Cool w/Variable Speed Blower
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
PACKAGE UNIT
RC
NOTES:
1. Remove “R” to “BK” jumper and clip all “Y”
connections at the integrated motor control board
(ICMC) to enable pulse width control of the variable
speed indoor blower. Ensure clipped wires are
capped and taped off.
RH
COMMON
SOV
COOLING
FAN
B/C
Y1
Y/Y1
Y2
Y2
BK
HEATING
BK1
W1
W1
W2
W2/X2
W3
ODT
ODT
ODT
RS
RS1
RS1
18-HD72D1-11-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
13
Installation Guide
15- PACKAGE 1 STAGE HEAT/COOL W/NON-VARIABLE SPEED BLOWER
Diagram 15 - Package 1 Stage Heat/Cool w/Non-Variable Speed Blower
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
PACKAGE UNIT
RC
RH
COMMON
B/C
COOLING
SOV
Y1
Y2
FAN
BK
HEATING
W1
W1
W2
W2
W3
ODT
ODT
Optional
Outdoor
Sensor*
ODT
RS1
RS
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
Optional
Remote
Sensor*
RS1
16- AMERISTAR 1 STAGE COOLING
Diagram 16 - Ameristar 1 Stage Cooling
824 COMFORT CONTROL
AUX1
AUX 1
NOTES:
1. B/C at the Control is 24v common and must be
connected to C at the Indoor and Outdoor Units
AUX1
AUX2
AUX 2
24VAC HOT
AUX2
INDOOR
UNIT
RC
RH
COMMON
SOV
COOLING
B/C
AIR
CONDITIONER
Y1
Y2
FAN
HEATING
BK
W1
W1
W2
W2
W3
ODT
ODT
ODT
RS
RS1
RS1
14
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
18-HD72D1-11-EN
824 Programmable Wi-Fi Comfort Control
4.6
Heat Pump Applications
17- 1 OR 2 STAGE HEAT PUMP W/TAM7 MODEL AIR HANDLER
Diagram 17 - 1 or 2 Stage Heat Pump w/TAM7 Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
24VAC HOT
RH
COMMON
SOV
COOLING
FAN
HEATING
ODT
X2 4
B/C
Y13
YI 2
Y2
YO2
Y1
Y2
Y2
BK
W1
BK1
W2
W1
W3
W2
ODT
W3
ODT
Optional
Outdoor
Sensor*
RS1
RS
Optional
Remote
Sensor*
RS1
NOTES:
1. Remove the factory installed BK jumper at the
indoor unit’s AFC Board
2. YI and YO connections must be made as shown
for freeze protection and internally mounted
condensate overflow circuits to function properly
3. Wire 3rd party condensate overflow switches
between Y1 of the 824 and YI of the airflow control
board
4. Do not connect X2 when using this control.
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
18- 1 STAGE HEAT PUMP W/GAM5A MODEL AIR HANDLER
Diagram 18 - 1 Stage Heat Pump w/GAM5A or TAM4 Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
24VAC HOT
RH
COMMON
SOV
COOLING
FAN
B/C
Y12
YI 1
Y2
YO 1
ODT
W2
W1
W3
W2
ODT
W3
RS1
RS1
18-HD72D1-11-EN
W1
ODT
RS
BK
HEATING
X2 3
NOTES:
1. YI and YO connections must be made as shown
for freeze protection and internally mounted
condensate overflow circuits to function properly
2. Wire 3rd party condensate overflow switches
beteeen Y1 of the 824 and Y of the air handler
3. Do not connect X2 when using this control.
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
15
Installation Guide
19- 1 STAGE HEAT PUMP W/GAM5B MODEL AIR HANDLER
Diagram 19 - 1 Stage Heat Pump w/GAM5B Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
RH
COMMON
SOV
COOLING
B/C
X2 2
Y1
NOTES:
1. Y terminal must be connected at indoor unit for
selected compressor air flow
2. Do not connect X2 when using this control.
Y1
Y2
FAN
BK
HEATING
ODT
W1
W1
W2
W2
W3
W3
ODT
ODT
RS
Optional
Outdoor
Sensor*
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
20- 2 STAGE HEAT PUMP W/GAM5B MODEL AIR HANDLER
Diagram 20 - 2 Stage Heat Pump w/GAM5B Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
RC
SOV
COOLING
B/C
Y1
Y1
Y2
FAN
X2 2
RH
COMMON
OUTDOOR UNIT
NOTES:
1. Y terminal must be connected at indoor unit for
selected compressor air flow
2. Do not connect X2 when using this control.
Y1
Y2
BK
HEATING
ODT
W1
W1
W2
W2
W3
W3
ODT
ODT
RS
RS1
RS1
16
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
18-HD72D1-11-EN
824 Programmable Wi-Fi Comfort Control
21- 1 STAGE HEAT PUMP W/GAF2-S MODEL AIR HANDLER
Diagram 21 - 1 Stage Heat Pump w/GAF2-S Model Air Handler
824 COMFORT CONTROL
AUX 1
NOTES:
1. Do not connect X2 when using this control.
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
X2 1
RH
COMMON
SOV
COOLING
B/C
Y1
Y2
FAN
BK
HEATING
W1
W2
W3
ODT
ODT
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
22- 1 STAGE HEAT PUMP W/GAF2-36M MODEL AIR HANDLER
Diagram 22 - 1 Stage Heat Pump w/GAF2-36M Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
RC
SOV
COOLING
FAN
B/C
Y12
YI 1
Y2
YO1
X23
RH
COMMON
OUTDOOR UNIT
NOTES:
1. YI and YO connections must be made as shown
for freeze protection and internally mounted
condensate overflow circuits to function properly
2. Wire 3rd party condensate overflow switches
beteeen Y1 of the 824 and YI of the air handler
3. Do not connect X2 when using this control.
BK
HEATING
W1
W2
W3
ODT
ODT
ODT
RS
RS1
RS1
18-HD72D1-11-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
17
Installation Guide
23- 1 STAGE
HEAT PUMP
W/GAT2
& GAM2
MODELModel
AIR HANDLER
Diagram
23 - 1 Stage
Heat Pump
w/GAT2
& GAM2
Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
NOTES:
1. Do not connect X2 when using this control.
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
RH
COMMON
SOV
COOLING
B/C
X2 1
Y1
Y2
FAN
BK
HEATING
ODT
W1
W1
W2
W2
W3
W3
ODT
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
24- 1 STAGE HEAT PUMP W/TEM3 MODEL AIR HANDLER
Diagram 24 - 1 Stage Heat Pump w/TEM3 Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
NOTES:
1. Do not connect X2 when using this control.
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
RC
RH
COMMON
SOV
COOLING
B/C
OUTDOOR UNIT
X21
Y1
Y2
FAN
BK
HEATING
W1
W1
W2
W2
W3
ODT
ODT
ODT
RS
RS1
RS1
18
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
18-HD72D1-11-EN
824 Programmable Wi-Fi Comfort Control
25- 1 STAGE
PUMP
MODELAir
AIR
HANDLER
Diagram
25 - 1HEAT
Stage
Heat W/TEM4
Pump w/TEM4
Handler
824 COMFORT CONTROL
AUX 1
AUX1
NOTES:
1. Do not connect X2 when using this control.
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
RH
COMMON
B/C
Y1
SOV
COOLING
X21
Y2
FAN
BK
HEATING
ODT
W1
W1
W2
W2
W3
W3
ODT
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
26- 1 OR 2 STAGE HEAT PUMP W/TEM6 MODEL VARIABLE SPEED AIR HANDLER
Diagram 26 - 1 or 2 Stage Heat Pump w/TEM6 Variable Speed Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
COMMON
SOV
COOLING
FAN
HEATING
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RH
B/C
Y1
Y1
Y1
Y2
Y2
Y2
X2 2
NOTES:
1. Remove the factory installed BK jumper at the
indoor unit
2. Do not connect X2 whene using this control.
3. Y2 connection at outdoor is only required for two
stage units
BK
BK1
W1
W1
W2
W2
W3
ODT
ODT
ODT
RS
RS1
RS1
18-HD72D1-11-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
19
Installation Guide
Diagram 27 - Package 1 or 2 Stage Heat Pump w/Variable Speed Blower
27 - Package 1 or 2 Stage Heat Pump w/Variable Speed Blower
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
PACKAGE UNIT
RC
NOTES:
1. Remove “R” to “BK” jumper and clip all “Y”
connections at the integrated motor control board
(ICMC) to enable pulse width control of the variable
speed indoor blower. Ensure clipped wires are
capped and taped off.
RH
COMMON
SOV
COOLING
FAN
B/C
Y1
Y/Y1
Y2
Y2
BK
HEATING
BK1
W1
W1
W2
W2/X2
W3
ODT
ODT
ODT
RS
RS1
RS1
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
28 - Package
1 Stage1 Heat
Speed Speed
BlowerBlower
Diagram
28 - Package
StagePump
Heat w/Non-Variable
Pump w/Non-Variable
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
PACKAGE UNIT
RC
RH
COMMON
SOV
COOLING
B/C
Y1
Y1
Y2
FAN
BK
HEATING
W1
W1
W2
W2/X2
W3
ODT
ODT
ODT
RS
RS1
RS1
20
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
18-HD72D1-11-EN
824 Programmable Wi-Fi Comfort Control
29 - AMERISTAR 1 STAGE HEAT PUMP
Diagram 29 - Ameristar 1 Stage Heat Pump
824 COMFORT CONTROL
AUX1
AUX 1
AUX1
AUX2
AUX 2
24VAC HOT
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
D1
RH
COMMON
B/C
SOV
COOLING
B3
Y1
X24
Y2
FAN
C2
NOTES:
1. D at the Outdoor Unit must be wired to W1 or W2 for
electric heat during defrost
2. B/C at the Control is 24v common and must be
connected to C at the Indoor and Outdoor Units
3. O at the Control must be connected to B at the
Outdoor Unit for SOV operation - SOV must also be
configured to be energized in heating mode in the
824 Installer Settings>Standard
4. Do not connect X2 when using this control.
BK
HEATING
ODT
W1
W1
W2
W2
W3
W3
ODT
ODT
RS
RS1
RS1
18-HD72D1-11-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
21
Installation Guide
4.7
Dual Fuel Applications
30 - 1 OR 2 STAGE HEAT PUMP W/VARIABLE SPEED GAS FURNACE
Diagram 30 - 1 or 2 Stage Heat Pump w/Variable Speed Gas Furnace
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
24VAC HOT
RC
INDOOR UNIT
OUTDOOR UNIT
X2 3
RH
COMMON
SOV
COOLING
B/C
Y1
Y2
FAN
BK
HEATING
ODT
Y1/Ylo
Y/Y2
Y/Y1
Y2
W1
BK 1
W2
W1
W3
W2
2 ODT
ODT
RS
NOTES:
1. Cut and remove the factory installed BK jumper at
the indoor unit (some units may require DIP switch
settings)
2. For restricted mode operation, a wired ODT sensor
must be connected to the 824
3. Connection to X2 is not required for this
configuration
Optional
Outdoor
Sensor*
RS1
RS1
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle with
HVAC wires. Also, keep away from high
voltage wiring to avoid interference.
31 - 1 STAGE HEAT PUMP W/NON-VARIABLE SPEED GAS FURNACE
Diagram 31 - 1 Stage Heat Pump w/Non-Variable Speed Gas Furnace
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
24VAC HOT
RC
INDOOR UNIT
OUTDOOR UNIT
X2 2
RH
COMMON
SOV
COOLING
B/C
Y1
NOTES:
1. For restricted mode operation, a wired ODT sensor
must be connected to the 82
2. Connection to X2 is not required for this
configuration
Y2
FAN
BK
HEATING
W1
W1
W2
W2
W3
ODT
ODT 1
ODT
RS
RS1
RS1
22
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote sensor
wires in the same bundle with HVAC wires.
Also, keep away from high voltage wiring to
avoid interference.
18-HD72D1-11-EN
824 Programmable Wi-Fi Comfort Control
32 - 1 OR
HEAT PUMP
w/S9V2
FURNACE
Diagram
322- STAGE
1 or 2 Stage
Heat Pump
w/S9V2
Furnace
824 COMFORT CONTROL
AUX1
AUX 1
AUX1
AUX2
AUX 2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
24VAC HOT
X2 4
RH
COMMON
B/C
B/C
SOV
COOLING
Y13
Y1/Ylo
Y2 3
Y/Y2
FAN
BK
NOTES:
1. Cut and remove the BK jumper at the indoor unit
2. Remove the factory Y1-O jumper on the indoor unit
for heat pump systems for proper LED readout
3. Y1 and Y2 wiring from the 824 must connect to Y1
and Y2 of the indoor unit IFC for proper air flow and
LED read out
4. Connection to X2 is not required for this
configuration
Y1
Y2
BK1
W1
HEATING
W2
W1
W3
W2
ODT
ODT
Optional
Outdoor
Sensor*
ODT
RS1
RS
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
Diagram 33 - Package 1 or 2 Stage Dual Fuel w/Variable Speed Blower
33- PACKAGE 1 OR 2 STAGE DUAL FUEL W/VARIABLE SPEED BLOWER
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
OUTDOOR UNIT
24VAC HOT
RC
COMMON
B/C
Y1
Y/Y1
Y2
Y2
RH
SOV
COOLING
FAN
BK
HEATING
NOTES:
1. Remove “R” to “BK” jumper and clip all “Y”
connections at the integrated motor control board
(ICMC) to enable pulse width control of the variable
speed indoor blower. Ensure clipped wires are
capped and taped off.
2. For restricted mode operation, a wired ODT sensor
must be connected to the 824.
BK 1
W1
W1
W2
W2/X2
W3
ODT
ODT2
ODT
RS
RS1
RS1
18-HD72D1-11-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle with HVAC
wires. Also, keep away from high voltage
wiring to avoid interference.
23
Installation Guide
5.
System Setup
User Setup Wizard
5.1
Power-Up Sequence
The User Setup Wizard is accessed navigating to
Home>Menu>Settings>User Setup Wizard. By following the
navigational steps and screen prompts, homeowners are
guided through the Display, Schedules, Guided Schedule,
Network, Nexia and Weather configuration screens. Each
of these menus may also be accessed individually. Refer
to the User Guide for detailed information on user settings.
When the 824 Control is connected to the Sub-base, the
Control initiates a 90-120 second power-up sequence.
During the power-up sequence, the Screen Calibration
option is available for five seconds (Screen Calibration
is available for five minutes if the screen has never been
calibrated and following a Restore Factory Defaults
command).
If the screen is not pressed within five minutes, the Control
will default to previously stored Screen Calibration settings.
The 824 Control is factory calibrated and can be recalibrated
at any time by rebooting the Control.
Note: Temperature display may be inaccurate until the 824
Control acclimates to ambient room conditions, which may
take up to one hour.
5.2
Guided Setup Wizards
The 824 Control features two Setup Wizards, the Installation
Wizard and the User Setup Wizard. The Installation Wizard
guides installers through the installation and configuration
process, and the User Setup Wizard guides Homeowners
through user-configurable settings.
Installation Wizard
The Installation Wizard appears when 1) the 824 Control is
powered on for the first time, 2) when the Restore Factory
Defaults function is invoked (Home>Menu>Service>
Technician Access>Proceed>Restore Factory Defaults),
and 3) when it is selected directly (Home>Menu>Service>
Technician Access>Proceed>Installation Wizard).
By following the navigational steps and screen prompts,
installers are guided through the Time and Date screens,
Installer Setup screens (see “5.4 Installer Setup Screens” on
page 25 for detailed descriptions of each of the Installer
Setup Screens), Reminders screens and the Dealer
Code configuration screens. Each of these menus can
be individually accessed after completing the Installation
Wizard.
5.3
Smart Optimization
The 824 Control is equipped with Smart Optimization.
By executing a series of blower and active call on/off
tests, Smart Optimization will customize the 824 Control
to each unique environment and increase the accuracy
of the sensed indoor temperature and overall system
performance.
Smart Optimization is enabled by default and will
automatically execute approximately 18 hours after initial
power up. Smart Optimization takes 90 minutes to complete
and during the process, heating and cooling operations are
disabled. The screen will indicate that the 824 Control is in
Smart Optimization mode.
To delay Smart Optimization for an additional 18 hours,
touch the 824 Control Screen and hold for five seconds.
To disable Smart Optimization altogether, navigate to
Home>Smart Optimization and select Disable and press
Apply.
To enable Smart Optimization, navigate to Home>Smart
Optimization and select Enable and press Apply. Smart
Optimization will execute in approximately 18 hours.
To manually trigger Smart Optimization, first disable, then
re-enable the feature.
INSTALLATION WIZARD
MENU ITEMS
DESCRIPTION
Date and Time
Set the current date, time and select whether Daylight Savings Time is on or off.
Installer Setup
Configure the basic equipment components installed and customize how the control operates. See
Sections 5.4.1 through 5.4.7 for detailed information on installer setup options.
Service Reminders
Various service reminders can be enabled on the 824 control based on the system configured. Reminder
options are System, Filter, Ventilation, UV Light and Humidifier. The frequency of each reminder can be
selected based on calendar or run time days.
Dealer Identification Code
The dealer identification code is used to populate the Dealer Contact Information and associate this device
with a Nexia Dealer Portal account. Enter the primary phone number of the dealership to activate this
feature. Only controls connected to the Internet will auto-populate the dealer information.
24
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824 Programmable Wi-Fi Comfort Control
5.4
Installer Setup Screens
From the Installer Setup screens, individual parameters are configured and modified. Use the up and down arrows to scroll
through the groups of settings. To change a setting contained in a particular group, press Edit and press Next to navigate to
the desired setting. Press Save to save changes or Exit to discard changes.
5.4.1 Group 1 Standard Settings
MENU ITEM
OPTIONS [DEFAULT]
DESCRIPTION
Outdoor Unit Type
None, [Cooling Only], Heat Pump
Select the type of outdoor unit installed
Outdoor Unit Stages
[Single Stage], Two Stage
Select the number of outdoor unit stages
Compressor Type
Single Compressor Two Stage,
[Two Compressor Two Stage]
Select the compressor type for multi-stage outdoor
units
Indoor Unit Type
[Gas/Oil], Electric, Hydronic
Select the type of indoor unit installed
Indoor Heat Stages
[Single Stage], Two Stage, Three Stage
Select the number of indoor heat stages
Indoor Blower Type
Variable, [Non - Variable]
Select the indoor blower type (Constant Torque motors
are considered non-variable speed)
SOV Operation
[with Cooling Call], with Heating Call
Select which mode of operation energizes the switchover valve
5.4.2 Group 2 Equipment Settings
MENU ITEM
OPTIONS [DEFAULT]
DESCRIPTION
Compressor Cooling Cycles Per Hour
2 to 6 Cph [3]
Select the number of cycles per hour during cooling operation
1st Stage Compressor Cooling Cycles Per Hour
2 to 6 Cph [3]
Select the number of cycles per hour during 1st stage cooling
operation
2nd Stage Compressor Cooling Cycles Per Hour
2 to 6 Cph [3]
Select the number of cycles per hour during 2nd stage cooling
operation
Compressor Heating Cycles Per Hour
2 to 6 Cph [3]
Select the minimum runtime (MRT) of stage 1 indoor heat
1st Stage Compressor Heating Cycles Per Hour
2 to 6 Cph [3]
Select the minimum runtime (MRT) of stage 2 indoor heat
2nd Stage Compressor heating Cycles Per Hour
2 to 6 Cph [5]
Select the minimum off time (MOT) for indoor heat operation
Indoor Heater Cycles Per Hour
2 to 6 Cph [5]
Select the number of cycles per hour during indoor heat operation
1st Stage Indoor Heat Cycles Per Hour
2 to 6 Cph [5]
Select the number of cycles per hour during 1st stage indoor heat
operation
2nd Stage Indoor Heat Cycles Per Hour
2 to 6 Cph [5]
Select the number of cycles per hour during 2nd stage indoor heat
operation
3rd Stage Indoor Heat Cycles Per Hour
2 to 6 Cph [5]
Select the number of cycles per hour during 3rd stage indoor heat
operation
5.4.3 Group 3 Sensor Settings
MENU ITEM
OPTIONS [DEFAULT]
DESCRIPTION
Select Outdoor Temperature Sensor
[No ODT Sensor],
Remote ODT Sensor
Select whether an outdoor temperature sensor has been connected
Calibrate Outdoor Temperature Sensor
-5°F to 5°F
Calibrate the outdoor temperature sensor
Select Indoor Temperature Sensor
[Onboard IDT Sensor]
Remote IDT Sensor
Select whether the indoor temperature is being sensed by the 824 Control
onboard sensor or wired remote sensor
Calibrate Indoor Temperature Sensor
-5°F to 5°F
Calibrate the indoor temperature sensor
Calibrate Onboard Humidity Sensor
-5% - 5%
Calibrate the onboard humidity sensor
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Installation Guide
5.4.4 Group 4 Accessories Settings
MENU ITEM
OPTIONS [DEFAULT] DESCRIPTION
Filtration Type Installed
Air Cleaner,
[Media Filter]
Select the filter type installed
Humidifier Installed
[None], Yes
Select whether a humidifier is installed
Humidifier - Select Aux Contact
[Aux1], Aux2
Select which set of Aux contacts is controlling the humidifier
Humidifier Type
[Powered/Bypass], Steam
Select what type of humidifier is installed
Humidifier Control
[RH Control], Frost Control
Select how the humidifier will be controlled (Outdoor temperature
sensor must be connected and enabled to allow Frost Control to be
selectable)
Humidifier Fan Action
[Humidify with active Heat
Call], Humidify without
active Heat Call
Select when the humidifier is allowed to operate
Airflow During Humidifier Only Mode
35% to [100%]
Select the desired airflow when the humidifier is operating without an
active call for heat - requires variable speed blower
UV Light Installed
[None], Yes
Select whether a UV Light is installed
Ventilation Installed
[None], Yes
Select whether ventilation is installed
Ventilation - Select Aux Contact
Aux1, [Aux2]
Select which set of Aux contacts is controlling the ventilation system
Minimum Ventilation Runtime
0 - 60 Minutes [5 Minutes]
Select the minimum runtime per hour for ventilation system
Outdoor Temperature Ventilation Override
[Disable], Enable
Select whether an outdoor temperature override is allowed (Outdoor
temperature sensor must be connected and enabled to allow this
setting to be selected)
Ventilator Fan Action
[Ventilate with Blower].
Ventilate without Blower
Select whether the indoor blower operates on a call for ventilation
Ventilation - Minimum Outdoor Temperature
*-10°F to 50°F [0°]
Select the minimum outdoor temperature that ventilation is allowed
Ventilation - Maximum Outdoor Temperature
80°F to 110°F [100°F]
Select the maximum outdoor temperature that ventilation is allowed
Accumulate Overridden Runtime
[No], Yes
Select whether the overridden ventilation runtime will be made up
Accumulated Period
[4 hours -recover based
on outdoor conditions],
24 hours - recover based
on outdoor conditions,
4 hours - recover to
maintain minimum
ventilation,
24 hours - recover to
maintain minimum
ventilation
Select when to recover missed ventilation runtime due to outdoor
conditions exceeding the minimum/maximum outdoor temperature
setting (The first two options will not meet ASHRAE 62.2 Standard for
minimum ventilation requirements)
Dehumidifier Installed
[None], Yes
Select whether a dehumidifier is installed
Dehumidifier - Select Aux Contact
Aux1, [Aux2]
Select which set of aux contacts is controlling the ventilation system
Dehumidifier Control Options
[Stand Alone Operation],
With Active Call for Cooling
Only
Select when the dehumidifier is allowed to operate
Run System Fan with Dehumidifier Request
Yes, [No]
Select if the indoor fan should operate with a call for dehumidifier
operation
26
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824 Programmable Wi-Fi Comfort Control
5.4.5 Group 5 Comfort Settings
MENU ITEM
OPTIONS [DEFAULT]
DESCRIPTION
Enable Dehumidification
[Enable], Disable
Select if enhanced dehumidification features are enabled. See section
7.2 Advanced Operation - Dehumidification for additional information.
Dehumidification Overcooling Limit - Degrees
[0°] to 3°F
Select the maximum amount of overcooling allowed when the indoor
humidity exceeds the cooling target humidity setpoint. See section 7.2
Advanced Operation - Dehumidification for additional information.
Smart Continous Fan
Enable, [Disable]
Select to enable or disable Smart Continous Fan
Control Response Rate
[Normal], Fast
Select the response rate of the control. See section 7.1 Advanced
Operation - Control Response Rate for additional information.
Aggressive Recovery > 2° Setpoint Change
Enable, [Disable]
Select whether the 10-minute staging inhibit is disabled (heating or
cooling mode) with a setpoint change greater than 2°. See section
7.7.1 Advanced Operation - Aggressive Recovery for additional
information.
Heating Aggressive Recovery by Outdoor
Temperature
Enable, [Disable]
Select whether the 10-minute staging inhibit is disabled during heating
mode when the outdoor temperature falls below the selected outdoor
temperature (Outdoor temperature sensor must be connected and
enabled to allow this setting to be selected)
Heating Aggressive Recovery
Setting
0° to 70°F [40°F]
Select the outdoor temperature for Heating Aggressive Recovery
Warm Air Discharge
Enable, [Disable]
When enabled the indoor airflow will be limited to 80% on a call for
heat pump heating. This only applies to heat pump heating with no call
for aux heat (An indoor unit with a variable speed blower is required)
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Installation Guide
5.4.6 Group 6 Airflow Settings
MENU ITEM
OPTIONS [DEFAULT]
VS Blower On Delay - Clg
[No Delay],
Enhanced Mode,
7.5 Minutes @ 80%,
4 Minutes @ 80%,
1 Minute @ 50%,
30 Seconds
Non VS Blower On Delay - Clg
[No Delay],
15 Seconds
30 Seconds
Select the blower on delay for cooling operation
VS Blower Off Delay - Clg
[No Delay],
1.5 Minutes @ 100%,
45 Seconds @ 100%,
30 Seconds @ 50%,
1.5 Minutes @ 50%,
3 Minutes @ 50%,
30 Seconds @ 35%
Select the blower off delay for cooling operation
Non VS Blower Off Delay - Clg
[No Delay],
30 Seconds,
60 Seconds,
90 Seconds
Select the blower off delay for cooling operation
VS Blower On Delay - Comp Htg
[No Delay],
Enhanced Mode,
7.5 Minutes @ 80%,
4 Minutes @ 80%,
1 Minute @ 50%,
30 Seconds
Non VS Blower On Delay - Comp Htg
[No Delay],
15 Seconds,
30 Seconds
Select the blower on delay for compressor
heating operation
VS Blower Off Delay - Comp Htg
[No Delay],
1.5 Minutes @ 100%,
45 Seconds @ 100%,
30 Seconds % 50%,
1.5 Minutes @ 50%,
3 Minutes @ 50%,
30 Seconds @ 35%
Select the blower off delay for compressor
heating operation
Non VS Blower Off Delay - Comp Htg
[No Delay],
30 Seconds,
60 Seconds,
90 Seconds
Select the blower off delay for compressor
heating operation
Hydronic Heat Blower On Delay
[No Delay],
30 Seconds,
60 Seconds
Select the blower on delay for hydronic heating
operation
Hydronic Heat Blower Off Delay
[No Delay],
30 Seconds,
60 Seconds,
90 Seconds
Select the blower off delay for hydronic heating
operation
Compressor Low Stage Air Flow% - Comp Clg
35% to 60% [50%]
Select the 1st stage air flow for a two stage/two
compressor unit in cooling mode
Compressor Low Stage Air Flow% - Comp Clg
55% to [80%]
Select the 1st stage air flow for a two stage/
single compressor unit in cooling mode
Compressor Low Stage Air Flow% - Comp Htg
35% to 60% [50%]
Select the 1st stage air flow for a two stage/two
compressor unit in heating mode
Compressor Low Stage Air Flow% - Comp Htg
55% to [80%]
Select the 1st stage air flow for a two stage/
single compressor unit in heating mode
28
DESCRIPTION
Select the blower on delay for cooling operation
Enhanced Mode is a tiered Blower On Delay for
variable speed blowers only (1 minute at 50%,
7.5 minutes at 80%, then 100%)
Select the blower on delay for compressor
heating operation
Enhanced Mode is a tiered Blower On Delay for
variable speed blowers only (1 minute at 50%,
7.5 minutes at 80%, then 100%)
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824 Programmable Wi-Fi Comfort Control
5.4.7 Group 7 Lockout Settings
An Outdoor Temperature Sensor must be enabled for Lockout settings to be selectable.
MENU ITEM
OPTIONS [DEFAULT]
DESCRIPTION
Auxiliary Heat Lockout
[Disable], Enable
Enable auxiliary heat lockout (10° minimum separation when enabling
auxiliary heat lockout and compressor heat lockout)
Auxiliary Heat Lockout Setting
32°F to 70°F Degrees [45°]
Select an outdoor temperature to prevent auxiliary heat above the selected
outdoor temperature
Compressor Lockout
[Disable], Enable
Enable compressor heat lockout (10° minimum separation when enabling
auxiliary heat lockout and compressor heat lockout)
Compressor Lockout Setting
5°F to 70°F Degrees [30]
Select an outdoor temperature to prevent compressor heating below the
selected outdoor temperature
Defrost Heater Balance Point (W1)
[Disable], Enable
Enable defrost heater balance point for W1, W2 and W3 (only applicable
when indoor heat is electric or hydronic)
Defrost Heater Balance Point (W1)
Setting
40°F to [55°F]
Select an outdoor temperature to disallow 1st, 2nd and 3rd stage of indoor
heat during defrost above this temperature
Defrost Heater Balance Point (W2)
[Disable], Enable
Enable defrost heater balance point for W1 and W2 (only applicable when
indoor heat is electric or hydronic)
Defrost Heater Balance Point (W2)
Setting
10°F to 50°F [40°F]
Select an outdoor temperature to disallow 2nd and 3rd stage of indoor heat
during defrost above this temperature
Defrost Heater Balance Point (W3)
[Disable], Enable
Enable defrost heater balance point for W3 only (only applicable when indoor
heat is electric or hydronic)
Defrost Heater Balance Point (W3)
Setting
[5°F] to 45°F [25°F]
Select an outdoor temperature to disallow 3rd stage of indoor heat during
defrost above this temperature
Compressor Cooling 1st Stage Lockout
[Disable], Enable
Enable compressor cooling 1st stage lockout
Compressor Cooling 1st Stage Lockout
Setting
80°F to [120°F]
Select an outdoor temperature to force the system to 2nd stage compressor
cooling
Compressor Heating 1st Stage Lockout
[Disable], Enable
Enable compressor heating 1st stage lockout
Compressor Heating 1st Stage Lockout
Setting
0°F to [50°F]
Select an outdoor temperature to force the system to 2nd stage compressor
heating
Furnace Heating 1st Stage Lockout
[Disable], Enable
Enable furnace heating 1st stage lockout
Furnace Heating 1st Stage Lockout
Setting
0°F to [50°F]
Select an outdoor temperature to force the system to 2nd stage furnace
heating
5.5
Service Reminders
Reminders can be enabled to trigger an alert when service
is required. The reminder is time-based and can be
configured on system run time or calendar days. Reminders
can be configured for humidifiers, filters, ventilation
systems, UV lights and HVAC system maintenance. The
type of reminders available are based on the accessories
enabled in the installer settings.
5.6
Dealer Code
When an 824 Control is connected to the Internet, a Dealer
Code can be entered to auto-populate the dealer’s contact
information and logo. The code is the dealer’s registered
phone number listed on ComfortSite. The Dealer Code is
also used to associate this device with a specific dealer on
the Dealer Diagnostic Portal.
18-HD72D1-11-EN
5.7
Software Updates
To take full advantage of the features and benefits of the
824, the Control should have the latest software revision
installed.
When the 824 is connected to a Nexia™ Home Intelligence
account, software updates will occur automatically and do
not require user intervention.
The software may also be manually updated. This
procedure requires a computer with an Internet connection,
a USB Flash Drive and the included USB connector. From
the computer, go to www.Trane.com/residential and select
Thermostat & Controls. Click on the 824, select Download
Latest Version Software and follow the on-screen prompts.
29
Installation Guide
6.
Basic Operation
6.1
PI Control
6.3
The 824 Control uses proprietary control schemes to
provide comfort and energy efficiency. The Control senses
indoor temperature and determines capacity needed based
on the following parameters:
• Mode of operation
• Proportional Error - distance from setpoint
• Integral Error - Time away from setpoint
Integral Error
72º
Set Point
Temperature
2 Seconds
Room
Temperature
A = Proportional Error
B + C + D... = Integral Error
Load Value - Cooling
0-100 Single Stage Compressor
0-200 Two-Stage Compressor
A Load Value of 50 represents a request of 50% demand
for single stage cooling units (“Y”) or 50% demand for stage
one of multistage cooling units (“Y1”).
A Load Value of 150 represents a request of 100% demand
for stage one (“Y1”) and 50% demand of stage two (“Y2”)
for multistage cooling units.
6.4
Duty Cycles
Indoor temperature control is achieved by duty cycling the
equipment when the load value is less than 100% of the
current stage of operation. The duty cycle rate is dependent
on the calculated load value.
The duty cycle chart below indicates the number of cycles
at 50% load (i.e. LV = 50).
6 CPH
6.2
Load Value - Heating
The 824 Control uses proportional plus integral error to
determine the amount of capacity required. The calculated
capacity is displayed as load value. Load Value is a numerical
representation of the needed capacity to maintain setpoint.
The load value range is dependent on the applied system.
2 CPH
1 Hour
As with all PI-based controls the indoor temperature will
fluctuate above and below the user selected setpoint to
maintain comfort in the space. Adjusting the factory set
CPH (Cycles per Hour) can affect how tight the Control
operates around the setpoint. The CPH can be adjusted in
the Installer Setup>Equipment Settings (2 – 6 CPH)
• Factory default for compressor operation is 3 CPH
• Factory default for indoor heat is 5 CPH
Effects of changing the cycle rates
Lower CPH results in longer run cycles with less cycling
but the indoor temperature may deviate above and below
setpoint.
Higher CPH results in tighter indoor temperature control
but shorter, more frequent cycles.
0-100
Single Stage Heat Pump Only
0-200
Two State Heat Pump Only
0-200
Single Stage Heat Pump + 1 Stage Electric/Wet Heat
0-300
Single Stage Heat Pump + 2 Stage Electric/Wet Heat
0-400
Single Stage Heat Pump + 3 Stage Electric/Wet Heat
0-300
Two Stage Heat Pump + 1 Stage Electric/Wet Heat
0-400
Two Stage Heat Pump + 2 Stage Electric/Wet Heat
0-500
Two Stage Heat Pump + 3 Stage Electric/Wet Heat
0-100
Single Stage Indoor Heat Only
0-200
Two Stage Indoor Heat Only
0-300
Three Stage Indoor Heat Only
6.5
0-175
Single Stage Heat Pump + 1 Stage Gas/Oil Heat
0-275
Single Stage Heat Pump + 2 Stage Gas/Oil Heat
0-375
Single Stage Heat Pump + 2 Stage Gas/Oil Heat
The 824 Control will enforce an “off cycle” anytime the
control overshoots more than 2.5°F. Once the indoor
temperature is within 0.75°F of setpoint an “on cycle” is
allowed dependent on load value and minimum off times.
0-275
Two Stage Heat Pump + 1 Stage Gas/Oil Heat
0-375
Two Stage Heat Pump + 2 Stage Gas/Oil Heat
0-475
Two Stage Heat Pump + 3 Stage Gas/Oil Heat
Overshoot Clamp
Cooling Overshoot Clamping Example
75º
74.25º
Actual Temperature
72.5º
OFF Cycle Enforced ON Cycle Allowed
30
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824 Programmable Wi-Fi Comfort Control
6.6
Stage Thresholds
6.7
The threshold to allow operation is a Load Value greater
than 5 and operation is always terminated with a Load
Value less than 1.
Load Value also determines when additional stages of
operation are requested. To prevent rapid cycling between
stages, a stage threshold is enforced. The stage threshold
is dependent on the applied system.
100-110
STAGE 3
STAGE 1
COMPRESSOR STAGING THRESHOLDS
STAGE 2
Y1 to Y2
100-115
HP to W1
HP to Dual Fuel
Stage Inhibits - Compressor Staging
LV=200
Y1 “ON”
LV=100
100-125
Stage Inhibits
When the stage threshold is exceeded, a stage inhibit is
applied. The stage inhibit calculates the rate of recovery
over a 15-minute period and determines if the next stage is
required to meet the current demand. If the rate of recovery
is great enough, a new 15-minute inhibit is enabled. The
Control will not go to the next stage of operation until it
determines that the current stage cannot satisfy the current
demand. Stage inhibits only apply between compressor
stages and compressor heat to indoor heat. Stage inhibits
do not apply to indoor heat stages.
Stage inhibits can be disabled in the 824 Control
Installer Setup>Comfort Settings.
Y2 “ON”
LV = 110
Y1 “ON”
LV = 100
AUX ELECTRIC HEAT - STAGING THRESHOLDS
STAGE 2
STAGE 3
STAGE 4
START INHIBIT
STAGE 5
STAGE 1
100- Compressor to W1
115
200- W1 to W2
215
LV=400
LV=300
LV=200
LV=100
300- W2 to W3
315
15 Minutes
LOAD VALUE (LV)
Stage Inhibits - Compressor to Aux Heat
Y1 “ON”
LV = 115
AUX FOSSIL HEAT - STAGING THRESHOLDS
W1 “OFF”
LV = 100
STAGE 3
175W2 to W3 190
START INHIBIT
15 Minutes
LOAD VALUE (LV)
LV=300
LV=200
175W1 to W2
190
STAGE 4
100- Inhibit - Compressor to W1
125
LV=100
STAGE 1
STAGE 2
W1 “ON”
Stage Inhibits - Duel Fuel
Y1 “ON”
W1 “ON”
Y1 “ON”
45 Second
Cool Down
AUX WET HEAT - STAGING THRESHOLDS
STAGE 3
LV = 125
100- Compressor to W1
125
STAGE 4
STAGE 1
STAGE 2
200W1 to W2
215
LV = 100
START INHIBIT
18-HD72D1-11-EN
LV=300
LV=200
LV=100
15 Minutes
LOAD VALUE (LV)
31
Installation Guide
System Mode
The 824 has (5) System Modes which can be selected…
Heating, Cooling, Off, Emergency Heat and Auto.
• Heating – System will only operate in heating mode
• Cooling – System will only operate in the cooling
mode
• Off – System will not operate in heating or cooling
mode
• Emergency Heating – System will operate the indoor
heat source only (this is only available when the
outdoor unit type is a heat pump)
• Auto - The Control will determine which mode of
operation based on the following rules:
• Heating - Indoor temperature is equal or less than
heating setpoint
• Cooling – Indoor temperature is equal to or greater
than cooling setpoint or within 1°F of cooling setpoint
There is minimum deadband between heating and cooling
setpoints of 3°F
6.8
Fan Mode
The 824 has three Fan Modes:
• Auto – Fan only runs with a call for heating or cooling
• On – Fan runs continuous
• Circ – Fan runs a user selected minimum amount of
time each hour
6.9
Air Cleaner Mode
The 824 has three Air Cleaner modes:
• Auto – Air cleaner operates only with a call for fan
operation
• Quick – Air cleaner will operate for 3-hours
• Allergy – Air cleaner will operate for 24-hours
32
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824 Programmable Wi-Fi Comfort Control
7.
Advanced Operation
7.1
Control Response Rate
Allows the user to select a set of higher proportionalintegral control constants to increase the responsiveness
of the Control. Selecting “Fast” will cause the Control to
generate load value at a faster rate. Control Response rate
can be adjusted in Installer Setup>Comfort Settings.
7.2
Dehumidification
The 824 utilizes the following methods for dehumidification:
• Air flow reduction (applies only to variable speed
blowers) – If BK is connected, the 824 can reduce
the system air flow by 30% anytime the indoor RH is
higher than the cooling RH target. Air flow reduction is
disallowed if the indoor temperature is more than 2°F
above the cooling setpoint. Dehumidification is factory
enabled in the Installer Setup>Comfort Settings.
All “Fan Off” delays are also defeated when
dehumidification is enabled and the indoor RH
exceeds the cooling RH target.
•
Overcooling (applies to variable speed and nonvariable speed blowers) - If overcooling is enabled,
the Control will allow a 0.1°F of overcooling for each
1% of RH error. A maximum amount of overcooling
can be configured for 1°, 2° or 3°F.
EXAMPLE OF OVERCOOLING
WITH MAXIMUM CONFIGURED AT 2°
•
TARGET
HUMIDITY
ACTUAL
HUMIDITY
PERCENT
OF RH
ERROR
DEGREES OF
OVERSHOOT
40%
40%
45%
5%
0.5° Overshoot
55%
15%
1.5° Overshoot
40%
65%
25%
2.0° Overshoot
40%
70%
30%
2.0° Overshoot
7.3
Dehumidifier Operation
The 824 has the ability to control a Whole-House
Dehumidifier through the normally open dry AUX contacts
on the 824 Control Sub-base. Control options are:
• Stand Alone Operation – Dehumidifier can operate
independent from cooling operation as long as the
824 Control is in Cooling mode or Auto mode and the
last call was cooling.
If Stand Alone Operation is selected, the 824 Control
allows the user to select whether the indoor fan
operates with dehumidifier request.
• With Active Call for Cooling Only – Dehumidifier can
only operate during an active call for cooling.
All dehumidifier control options are located in the
Installer Setup>Accessories Settings.
7.4
Dual Fuel Operation
The 824 can control a dual fuel system without the need of
an external dual fuel kit. An Outdoor Temperature Sensor
must be installed and enabled for Restricted Modes to be
available. The 824 Control options are:
•
Non Restricted Mode – The Control will determine
which mode of heat will operate to maintain comfort
based on the calculated system load value. With a load
value in compressor heating range the heat pump will
operate and if the load value climbs to auxiliary heat
range, the heat pump will cycle off and the auxiliary
heat source will cycle on. Once the load value falls
below the auxiliary heat range, the auxiliary heat will
cycle off, and the heat pump will cycle back on.
When the system is actively overcooling,
Dehumidification will be displayed on the 824 home
screen. The maximum amount of overcooling is
configured in Installer Setup>Comfort settings.
Smart Continuous Fan (applies to variable speed and
non-variable speed blowers) – If enabled, continuous
fan operation will be interrupted when indoor RH
exceeds desired cooling RH target. A humidity icon
will be displayed along with the fan icon to indicate
that continuous fan operation has been disabled due
to high humidity conditions. Smart Continuous Fan
will also interrupt the fan circulate mode when indoor
humidity exceeds the desired cooling RH. This feature
can be enabled in the Installer Settings>Comfort
Settings>Smart Continuous Fan settings.
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Installation Guide
•
Restricted Mode (compressor heat only) – Once
enabled an outdoor temperature lockout can be set
to disable compressor heating operation. When the
outdoor temperature falls below the compressor
heat lockout the system will operate on auxiliary
heat source only. At any temperature above the
compressor heat lockout the system will operate
the same as non-restricted mode, heat pump or
auxiliary heat would be allowed based on system
load value. Once the compressor heat is locked out,
the outdoor temperature must rise at least 4° above
the compressor heat lockout setting before allowing
compressor heat again.
Restrict Compressor
and Aux Heat
70º
65º
60º
55º
50º
45º
40º
35º
30º
Restrict Compressor
Heat Only
70º
65º
60º
55º
50º
45º
40º
35º
30º
Control Determines
Heat Source
Compressor Lockout
Aux Heat Only
Compressor
Lockout Set to 50º
•
34
Restricted Mode (compressor and auxiliary heat) –
Once enabled an outdoor temperature lockout can be
set to disable compressor heating below and disallow
auxiliary heat operation above. When the outdoor
temperature is above the auxiliary heat lockout,
only compressor heat is allowed. When the outdoor
temperature falls below the compressor heat lockout,
only auxiliary heat is allowed. When the outdoor
temperature is between the compressor heat lockout
and auxiliary heat lockout the system will operate the
same as non-restricted mode, heat pump or auxiliary
heat is allowed based on system load value. There is
a 10° minimum dead band between the compressor
heat lockout and auxiliary heat lockout. Once the
compressor heat or auxiliary heat is locked out,
the outdoor temperature must rise or fall at least 4°
above or below the lockout setting before allowing
compressor or auxiliary heat again.
Compressor Only
Comp or Aux Heat Allowed
Aux Heat Only
Minimum 10°
Deadband
Compressor
Lockout Set to 40º
Aux Heat
Lockout Set to 50º
AN OUTDOOR TEMPERATURE SENSOR MUST
BE ENABLED FOR LOCKOUT SETTINGS TO BE
AVAILABLE. Lockout options are located in the
Installer Setup>Lockout Settings.
7.5
Lockouts
The 824 has the following lockouts. AN OUTDOOR
TEMPERATURE SENSOR MUST BE ENABLED FOR
LOCKOUT SETTINGS TO BE AVAILABLE. Lockouts can
be enabled in Installer Setup>Lockout Settings.
• Auxiliary Heat Lockout – Once enabled, select an
outdoor temperature which disables auxiliary heat
anytime the outdoor temperature is above the selected
temperature. Compressor heat will be allowed.
• Compressor Lockout - Once enabled, select an
outdoor temperature which disables compressor
heat anytime the outdoor temperature is below the
selected temperature. Indoor heat will be allowed.
NOTE: If enabling Auxiliary Heat Lockout and
Compressor Heat Lockout there is a minimum 10°
dead band between the two settings.
• Defrost Heater Balance Point (W1) – Once enabled,
select an outdoor temperature which disables all
electric heat during defrost above the selected
temperature.
• Defrost Heater Balance Point (W2) – Once enabled,
select an outdoor temperature which disables 2nd
and 3rd stages of electric heat during defrost above
the selected temperature.
• Defrost Heater Balance Point (W3) – Once enabled,
select an outdoor temperature which disables 3rd
stage of electric heat during defrost above the
selected temperature.
• Compressor Cooling 1st Stage Lockout – Once
enabled, select an outdoor temperature which forces
2nd stage cooling operation.
• Compressor Heating 1st Stage Lockout – Once
enabled, select an outdoor temperature which forces
2nd stage compressor heating operation.
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824 Programmable Wi-Fi Comfort Control
•
7.6
Furnace Heating 1st Stage Lockout – Once enabled,
select an outdoor temperature which forces 2nd stage
furnace heating operation.
Humidifier Operation
The 824 has the ability to control a humidifier through the
normally open dry AUX Contacts on the Control Sub-base.
Humidification is only enabled while in heating mode of
operation. Control options are:
• RH Control – Dry contacts are closed anytime the
indoor humidity is less than the heating target relative
humidity.
• Frost Control – The 824 Control references the
outdoor temperature and structure integrity to offset
the heating target relative humidity. This helps to
limit the risk of frost or condensation from forming
on interior walls and windows. A scale of 1 to 10 is
provided based on the insulation properties and
expected leakage of the home (1=Leaky with poor
insulation, 10=Very Tight with good insulation). An
outdoor temperature sensor must be connected and
enabled for frost control to be available.
Frost Control Structure Integrity Scale
the outdoor temperature exceeds the minimum or maximum
outdoor temperature selections. If outdoor temperature
overrides are enabled the user can select to accumulate
the missed ventilation run time. Options are below:
•
Accumulate missed ventilation run time in 4
hour increments and make up when the outdoor
temperature is within the min/max settings.
• Accumulate missed ventilation run time in 24
hour increments and make up when the outdoor
temperature is within the min/max settings
• Accumulate missed ventilation run time in 4 hour
increments and make up at the end of 4 hour period.
• Accumulate missed ventilation run time in 24 hour
increments and make up at the end of 24 hour period.
All Ventilation control options are located in the
Installer Setup>Accessories Settings.
7.9
Warm Air Discharge
Enabling Warm Air Discharge with BK connected will
reduce the variable speed blower air flow by 20% when
in compressor heating operation. Warm Air Discharge
only applies to compressor heating and is disabled when
hydronic, fossil fuel or electric heat (including supplemental
heat) modes are activated. Warm Air Discharge can be
enabled in Installer Setup>Comfort Settings.
7.10 Wet Heat (Hydronic) Operation
Leaky, Poor Insulation Average
10
Good Insulation, Tight
The 824 Control can be setup to allow humidification
anytime in heating mode or only when actively heating.
The airflow during Humidifier-only is factory set to 100%
but can be adjusted between 35%-100% (this requires
a variable speed indoor blower with BK connected).
All humidifier control options are located in the
Installer Setup>Accessories Settings.
7.7
Recovery
The 824 control utilizes a Stage Inhibit to limit equipment
staging. This inhibit can be defeated in the following two
manners.
7.7.1 Aggressive Recovery
Disables stage inhibits in heating and cooling mode anytime
the setpoint is adjusted more than 2°F
7.7.2 Heating Aggressive Recovery
Disable stage inhibit in heating mode only when the outdoor
temperature falls below the selected outdoor temperature
7.8
A hot water coil can be applied to either a variable speed
or non-variable speed indoor unit. The hot water coil can
be the sole source of heat or used as auxiliary heat when
applied with a heat pump. When applied with a heat pump,
wet heat is considered auxiliary heat and will operate inconjunction with heat pump heat. Switching the system
mode to emergency heat would disable the heat pump and
cycle the wet heat only.
If applied with a variable speed air handler with BK
connected, the blower speed during wet heat only heating
will vary based on the system load value. The airflow will
range from 35% to 100% depending on the system load
value. When applied with a heat pump, the blower speed
during heat pump and wet heat operation will be the higher
of the two air flows. There are separate blower “On” and
“Off” delays for wet heat in the 824 Control.
The 824 Control is designed to operate forced air systems
and should not be applied to non-forced air systems (radiant
floors, radiators, etc…)
The hydronic heat blower delay options can be accessed
by navigating to Installer > Setup > Airflow Settings.
Ventilation Operation
The 824 has the ability to control a Ventilation system
through the normally open dry AUX Contacts on the 824
Control Sub-base. The blower is not interlocked on a call
for ventilation. The ventilation run time per hour can be
adjusted to meet ASHRAE 62.2 standards. A temperature
override can be set to prevent ventilation operation when
18-HD72D1-11-EN
35
Installation Guide
8.
Diagnostic Tools
8.1
Test Modes
Access Test Modes by navigating to Service Menu>Test Modes. All test modes will terminate automatically after 60 minutes
or can be terminated manually at any time.
MODE
SETTINGS
DESCRIPTION
Test Blower
50%, 100%
Energize indoor blower at the selected speed
Test Cool
Stage 1
Stage 2
Energize the selected stage of cooling operation. The indoor blower will also
operate at the speed required for the selected stage
Test Compressor Heat
Stage 1
Stage 2
Energize the selected stage of compressor heating operation. The indoor blower
will also operate at the speed required for the selected stage
Test Indoor Heat
Stage 1
Stage 2
Stage 3
Energize the selected stage of indoor heating operation. The blower operation
will be dependent on the indoor heat type:
Electric - blower energized during test mode but the blower speed is controlled
by the indoor unit
Fossil - blower is controlled independently by the indoor unit during test mode
Hydronic - blower is energized during test mode
Test Compressor and Indoor Heat
Stage 1 Indoor Heat
Stage 2 Indoor Heat
Stage 3 Indoor Heat
Energize all stages of compressor heat and selected stage of indoor electric
heat/hydronic heat. The blower is energized and runs at the higher of the
compressor heat air flow versus indoor heat air flow
More
AUX 1
AUX 2
Closes the normally open AUX contacts. The blower is not energized during this
test mode
8.2
Save Logs
The 824 Control has the ability to log data on USB Flash
Drive. Attach a USB Flash Drive to the included USB
connector, plug it into the 824 Control and select Save
Logs from the Service Menu.
The amount of data logged will be dependent on the
number of days logged and the storage capability of the
USB Flash Drive. Access Save Logs by navigating to
Service Menu>Save Logs.
8.3
Diagnostics
Within the Diagnostic screen are two items related to alerts:
• Current Alerts – Alerts which are currently active
• Alert History – Cleared Alerts (last 30 days)
NOTE: Each alert will have a date/timestamp of when the
alert was negated. The Date/Time stamp for Current Alerts
is when the alert was asserted. For Alert History the date/
timestamp is when the alert was negated.
From both screens the user can select an alert code and
get additional information on the alert as well as a list of
possible causes, similar to the Interactive Troubleshooting
Guide located on ComfortSite/ASDealernet
All alerts are categorized by severity:
• CRITICAL
— Loss of heating/cooling operation
— Service call is required
— Alert messages are displayed on the home screen
and when closed, a flashing red icon is used to
indicate alert condition.
• MAJOR
— Reduced functionality - minimum operation is possible
— Service call is not immediately required
36
— Alert messages are not displayed on the home screen
but a yellow icon is used to indicate alert condition.
NOTE: Critical and Major alerts can be displayed on the
home screen by pressing the alert icon on the shortcut tool
bar (top right of home screen).
• NORMAL
— Functionality may be lost but should recover or the
information is for diagnostic purposes / performance
monitoring
— Service call is not required
— Normal alerts are only displayed in the Diagnostic
screen
Diagnostics can be accessed by navigating to
Service Menu>Diagnostics.
8.4
History
History is accessed by navigating to Service Menu>History
The History screen allows the technician to view cycle count
and run time data for each mode and stage of operation.
This data provides a snap-shot into system operations.
Y1 COOLING
TODAY
LAST 7
DAYS
CURRENT
MONTH
LAST
MONTH
01/02
01/02
01/02
01/02
Y2 COOLING
Y1 HEATING
Y2 HEATING
W1
W2
W3
DEFROST CYCLES
Indicates cycle count
Indicates cycle time in minutes
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824 Programmable Wi-Fi Comfort Control
8.5
System Report
The System Report Screen provides technicians with
important system operational data in one, concise screen.
The data is provided in real-time and updates as the data
changes.
The System Report Screen displays the following data
points:
— System Status - mode and stage of operation
— Load Value
— Fan Status
— Indoor Temperature
— Indoor Relative Humidity
— Heating and Cooling Setpoints
— Relative Humidity Setpoints
— Dehumidifier Status
— Outdoor Temperature
— Outdoor Relative Humidity (Nexia™ connection
required)
Currently Energized Terminals are displayed in green at the
bottom of the System Report screen.
8.6
Restore Factory Defaults
This feature will delete all saved settings, both user and
installer, and restore the 824 to its factory default settings.
This also includes any Wi-Fi and Z-Wave device settings.
18-HD72D1-11-EN
37
Installation Guide
9.
Troubleshooting
SYMPTOM
POSSIBLE CAUSES
ACTION
Control displays an alert code on
the screen.
A critical or major alert is present.
Navigate to the Diagnostic screen on the 824 Control for a
Problem Description and Possible Cause.
Display will not come on
Loss of 24VAC between R & B at the Control.
1) Check R & B wiring.
2) Check transformer for 24VAC output.
3) Check for broken or shorted thermostat wire.
Indoor temperature display is
incorrect.
1) Indoor temperature display needs calibration.
2) Heat from touch screen is being trapped within
the thermostat body. See section 4.1 for mounting
location guidelines.
1) Calibrate temperature sensor from Sensor Settings or
use a remote temperature sensor
2) Move Control away from competing air stream or use a
remote indoor sensor.
Indoor humidity display is incorrect.
Indoor humidity display needs calibration.
Calibrate humidity sensor from the Sensor Settings.
Heating will not come on.
1) System mode is not set to Heat/Auto or setpoint
is set too low.
2) Minimum off time delay is being enforced.
3) Heating system may require service.
1) Set mode to heat and raise the setpoint above the room
temperature.
2) Wait for 5 minutes and recheck heating equipment.
3) Check/repair system.
Cooling will not come on.
1) System mode is not set to Cool/Auto or the
setpoint is too high.
2) Minimum off time delay is being enforced.
3) Cooling system may require service.
1) Set mode to cool and lower the setpoint below the room
temperature.
2) Wait for 5 minutes and recheck cooling equipment.
3) Check/repair system.
Heating or Cooling is displayed,
but no warm or cool air is coming
from the registers.
1) There is a fan delay as the heating or cooling
equipment turns on.
2) Equipment is not working properly.
1) Wait a minute for blower delays and recheck registers.
2) Check/repair system.
Fan runs all the time
1) Fan mode is set to On, Circulate or Clean mode
2) Field wiring issue
3) There is a failure in the indoor unit
1) Check Control settings to see if fan is set to On,
Circulate or Clean mode.
2) Check field wiring
3) Check indoor unit for failures (such as tripped heating
limit).
“+” symbol appears on Home
Screen beneath Indoor
Temperature readout
Both compressor heat and indoor heat are being
called simultaneously
No action required, symbol is for informational purposes
only
Fan is set to ON but not running.
1) Humidity Control is engaged.
2) Field wiring issue
3) Blower motor is not functioning.
1) If indoor humidity is higher than desired setpoint, the
blower will cycle off with the equipment. A humidity icon
will be displayed on the Fan Mode button when the blower
operation is being inhibited due to high humidity.
2) Check field wiring
3) Check/repair system.
Cooling or Heating cycles too
fast or too slow (narrow or wide
temperature swings).
1) Check the location of the Control for drafts.
2) Cycles per hour is improperly set.
1) Seal air leaks behind Control. Relocate Control or apply
remote indoor temperature sensor.
2) Adjust cycle rates in the Advanced Installer Setup.
Heat pump is not turning on; only
furnace or electric heat strips are
running.
1) Outdoor temperature is below compressor
lockout temperature setting.
2) System mode is set to Emergency Heat.
3) Outdoor Unit may require service.
1) Adjust the compressor lockout temperature setting if
desired.
2) Check/repair outdoor temperature sensor or wiring.
Cannot change system mode to
desired setting.
Equipment is not configured properly.
Check the standard installer set up screen to ensure
equipment is properly configured.
Screen does not respond properly
to a button press
1) Screen is out of calibration.
2) Internal Control fault
1) Remove Control from sub base and reset. Follow the
calibration instructions when the Control reboots.
2) Reset/Cycle power to Control by removing it from the
subbase, waiting 10 seconds and replacing.
38
18-HD72D1-11-EN
824 Programmable Wi-Fi Comfort Control
10. Notices
10.1 FCC Notice											
INFORMATION TO USER
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device
may not cause harmful interference and (2) This device must accept any interference received, including interference
that may cause undesired operation. The antenna(s) used for this transmitter must be installed to provide a separation
distance of at least 20 cm from all persons and must not be collocated or operating in conjunction with any other antenna
or transmitter.
This equipment has been tested and found to comply with the limits for Class B Digital Device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures.
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected
• Consult the dealer or an experienced radio/TV technician for help
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
10.2 IC Notice
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two
conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference
that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence.
L’exploitation est autorisée aux deux conditions suivantes : (1) l’appareil ne doit pas produire de brouillage, et (2) l’utilisateur
de l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le
fonctionnement.
18-HD72D1-11-EN
39
Installation Guide
The manufacturer has a policy of continuous product and
product data improvement and it reserves the right to
change design and specifications without notice.
Representative-only illustrations included in this document.
11/2017
40
18-HD72D1-11-EN
American Standard Gold 824
Connected Control
ACONT824 Installation Guide
WORKS WITH
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit.
These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with
the installation. Should further information be desired or should particular problems arise which are not covered sufficiently
for the purchaser’s purposes, the matter should be referred to your installing dealer or local distributor.
11-HD13D1-10-EN
Installation Guide
Contents
1. Safety....................................................................... 2
2. Product Specifications........................................... 3
3. General Information................................................ 3
3.1 Overview........................................................ 3
3.2 Contents......................................................... 3
3.3 Accessories.................................................... 3
4. Installation............................................................... 4
4.1 Location.......................................................... 4
4.2 Network Connections..................................... 4
4.3 Mounting........................................................ 4
4.4 Wiring............................................................. 5
4.5 Heat/Cool Applications................................... 7
4.6 Heat Pump Applications............................... 16
4.7 Dual Fuel Applications................................. 23
5. System Setup........................................................ 26
5.1 Power-Up Sequence.................................... 26
5.2 Guided Setup Wizards................................. 26
5.3 Smart Optimization....................................... 26
5.4 Installer Setup Screens................................ 27
5.4.1 Group 1 Standard Settings........................... 27
5.4.2 Group 2 Equipment Settings........................ 27
5.4.3 Group 3 Sensor Settings.............................. 27
5.4.4 Group 4 Accessories Settings...................... 28
5.4.5 Group 5 Comfort Settings............................ 29
5.4.6 Group 6 Airflow Settings............................... 30
5.4.7 Group 7 Lockout Settings............................. 31
5.5 Service Reminders....................................... 31
5.6 Dealer Code................................................. 31
5.7 Software Updates......................................... 31
6. Basic Operation.................................................... 32
6.1 PI Control..................................................... 32
6.2 Load Value - Heating.................................... 32
1.
Safety
NOTE: Use 18-gauge color-coded thermostat cable for
proper wiring. Shielded cable is not typically required.
Keep this wiring at least one foot away from large inductive
loads such as Electronic Air Cleaners, motors, line starters,
lighting ballasts and large distribution panels.
! WARNING
▲
This information is intended for use by individuals
possessing adequate backgrounds of electrical and
mechanical experience. Any attempt to repair a central
air conditioning product may result in personal injury and/
or property damage. The manufacturer or seller cannot
be responsible for the interpretation of this information,
nor can it assume any liability in connection with its use.
7.
8.
9.
10.
6.3 Load Value - Cooling.................................... 32
6.4 Duty Cycles.................................................. 32
6.5 Overshoot Clamp......................................... 32
6.6 Stage Thresholds......................................... 33
6.7 Stage Inhibits............................................... 33
6.8 Fan Mode..................................................... 34
6.9 Air Cleaner Mode......................................... 34
Advanced Operation............................................. 35
7.1 Control Response Rate ............................... 35
7.2 Dehumidification........................................... 35
7.3 Dehumidifier Operation................................ 35
7.4 Dual Fuel Operation..................................... 35
7.5 Lockouts....................................................... 36
7.6 Humidifier Operation.................................... 37
7.7 Recovery...................................................... 37
7.7.1 Aggressive Recovery................................... 37
7.7.2 Heating Aggressive Recovery...................... 37
7.8 Ventilation Operation.................................... 37
7.9 Warm Air Discharge..................................... 37
7.10 Wet Heat (Hydronic) Operation.................... 37
Diagnostic Tools.................................................... 38
8.1 Test Modes................................................... 38
8.2 Save Logs.................................................... 38
8.3 Diagnostics................................................... 38
8.4 History.......................................................... 38
8.5 System Report............................................. 39
8.6 Restore Factory Defaults.............................. 39
Troubleshooting.................................................... 40
Notices................................................................... 41
10.1 FCC Notice................................................... 41
10.2 IC Notice...................................................... 41
Failure to follow these wiring practices may introduce
electrical interference (noise) which can cause erratic
system operation.
All unused thermostat wire to be grounded at indoor unit
chassis ground only. Shielded cable may be required if the
above wiring guidelines cannot be met. Ground only one
end of the shield to the system chassis.
! WARNING
▲
LIVE ELECTRICAL COMPONENTS!
During installation, testing, servicing, and troubleshooting
of this product, it may be necessary to work with live
electrical components. Failure to follow all electrical safety
precautions when exposed to live electrical components
could result in death or serious injury.
11-HD13D1-10-EN
824 Programmable Wi-Fi Comfort Control
2.
Product Specifications
SPECIFICATION DESCRIPTION
Product Model
Product
Size
Configurations
Maximum Number of Stages
Storage/Operating Temperature
Input Power
Power Consumption
Wire Usage
System Modes
Fan Modes
ACONT824
Gold 824 824 Connected Control
5-1/2” x 3-3/8” x 1” (WxHxD)
Heat Pump, Heat/Cool, Dual Fuel, Heat Only, Cooling Only
5 Stages Heat, 2 Stages Cooling
-40°F to 175°F, 5% to 95% RH non-condensing
24VAC
7VA*
18 AWG
Auto, Heating, Cooling, Off, Emergency Heat
Auto, On, Circulate
Cooling Setpoint Temperature Range
60°F to 99°F, 1°F resolution
Heating Setpoint Temperature Range
55°F to 90°F, 1°F resolution
Indoor Temperature Display Range
-40°F to 122°F
Outdoor Temperature Display Range
-40°F to 140°F
Indoor Humidity Display Range
0% to 100%, 1% resolution
Minimum Cycle Off Time Delay
Compressor: 5 minutes, Indoor Heat: 1 minute
*On every application, 24VAC loads should be reviewed to be sure the indoor unit control power transformer is adequately sized.
3.
General Information
3.1
Overview
The 824 Connected Control has a 4.3” color touch screen
and offers a full-featured and easy-to-use interface. From
individual daily schedules to remote access, the 824 is one
of the most advanced 24VAC Controls available.
3.2
—
—
—
—
—
—
—
—
3.3
Accessories
— Wired Remote Indoor Sensor (ZZSENSAL0400AA)
— Wired Remote Outdoor Sensor (BAYSEN01ATEMPA)
— Bonnet Thermostat model THT1248
(BAYSEN03ATEMPAA)
Contents
1-Control
1-Sub-base
2-#6 18X1 Phillips slotted head mounting screws
2-#6x1 Nylon Drywall Anchors
1-Installation Guide
1-Quick Start Guide
RJ-45 Holder and Screw
1-USB “On-the Go” Adapter Cable (Micro USB plug to
Standard USB receptacle)
11-HD13D1-10-EN
Installation Guide
4.
Installation
4.1
Location
The 824 is designed for installation in climate controlled
living spaces. Place the unit in a central location with good
circulation.
For proper temperature sensing, avoid exposing the 824 to
heat radiated from lamps, sun light, fireplaces or any other
radiant heat source.
Avoid locations close to windows, behind doors or alcoves
with poor air circulation, adjoining outside walls, or doors
that lead to the outside.
Select a location that prevents the 824 from being directly
exposed to air currents from supply registers or ceiling fans.
Mount the Control on a section of interior wall that does not
contain hot or cold water pipes or duct work.
Important: The 824 Control utilizes a 4.3” color touch
screen. This screen generates heat which is vented out
the top of the Control utilizing natural convection. If an air
source is directed at or from above, heat from the screen
can be trapped within the Control and can cause the indoor
temperature to be biased. (Refer to Figure 1 on page 4.)
Figure 1. PLACEMENT OF THE 824
Correct
Placement
Natural heat
dissipation
from the
Touch Screen
2 FEET
Optimum
Zone
5 FEET
Incorrect
Placement
Onboard
Thermistor
Ceiling Fan
Heat from the screen may be trapped
within the body of the Control by an
external top-down airflow source, such
as a ceiling fan.
4.2
Network Connections
4.3
Mounting
To take advantage of the full range of features on the 824
Control, it should be connected to the Internet. This is
possible using either a wireless or a wired connection.
Wireless Connections
If the 824 Control will be connected to the Internet using the
built-in wireless feature, choose a mounting location that
ensures adequate signal strength from the Internet router.
Tips to Help Maximize Signal Strength:
— Do not mount the Control more than 30 feet from the
wireless router
— There should be no more than three interior walls
between the Control and the router.
— Do not mount the Control in areas where
electromagnetic emissions from other devices,
appliances or wiring can interfere with the Control’s
communication. (i.e. wireless phones, security
systems, wireless Internet cameras).
— Do not mount the Control in recessed areas,
near metal objects, or near structures. (i.e. doors,
appliances, entertainment centers or shelving units).
— Do not mount the Control closer than 2 inches to any
pipes, duct work, or other metal obstructions.
— Do not have metal obstructions, concrete or brick
walls between the Control and the router.
Ceiling Fan
Incorrect
Refer to the 824 User Guide for additional information on
Placement
connecting the 824 to the Internet.
Wired Connections
HeatThe
from824
the screen
maymay
be trapped
Control
be connected to the Internet using its
within the body of the Control by an
built-in
RJ-45
connector.
When using a wired connection,
external top-down airflow source, such
as a ceiling
fan.
verify that a CAT
5 or better
Ethernet cable with a male
RJ-45 connector is present from the router to the Control.
Follow these steps to mount the 824 Control to the wall.
1. Turn OFF all power to heating and cooling equipment.
The onboard thermistor may be biased
2. If
thermostat
is being replaced:
byan
thisexisting
heat causing
the displayed
indoor temperature to be elevated.
a. Remove the existing thermostat from the wall.
b. Record color and terminal marking of each wire.
c. Disconnect the wires from the existing thermostat
being careful not to allow them to fall back into
the wall.
3. Carefully pry the Sub-base away from the 824 Control
using a small flat-blade screwdriver. Note that the
tight fit is normal and ensures that the Control is held
securely to the Sub-base when mounted on the wall.
4. Route the wires through the opening on the Sub-base.
5. If using a wired Internet connection, route the Ethernet
cable through the opening.
The onboard thermistor may be biased
by this heat causing the displayed
indoor temperature to be elevated.
11-HD13D1-10-EN
This side mounts to wall
824 Programmable Wi-Fi Comfort Control
6. Place the Sub-base against the wall in the desired
location and mark the wall through the mounting
holes. If you are using a wired Internet connection, be
sure to mark the cutout for the RJ-45 connector (see
Figure 2 on page 5).
7. Drill the holes in the wall where marked.
If you are using a wireless Internet connection, skip to
step 9.
8. When using a wired Ethernet connection, follow these
step and refer to Figure 3 on page 5.
a. With the Sub-base and RJ-45 holder oriented as
shown, press the holder into the Sub-base.
b. Slide the holder to the right so it snaps in place.
c. Secure the holder with the provided screw.
d. Insert the RJ-45 Connector into the RJ-45
holder until it snaps into place.
9. Mount the Sub-base to the wall using included
mounting screws and drywall anchors. An optional
mounting hole is available for more secure mounting,
if needed. Make sure all wires extend through the hole
in the Sub-base see Figure 4 on page 5.
4.4
Wiring
Figure 3. ATTACH RJ-45 HOLDER TO SUB-BASE
RS1 RS1 ODT ODT W3 W2 W1 BK
Y2
Y1
B/C RH RC AUX2 AUX2 AUX1 AUX1
Thermostat
Wires
Mounting Holes
Wa RJ-45
ll Plug
Optional Mounting Hole
Figure 4. MOUNT THE SUB-BASE TO THE WALL
Thermostat Wiring
1. Adjust the length and position of each wire to reach
the proper terminal on the connector block of the
Sub-base. Strip 1/4” of insulation from each wire.
Do not allow adjacent wires to short together when
connected.
2. Match and connect control wires to the proper
terminals on the connector block. Refer to Field Wiring
Diagrams included in this document.
3. Push excess wire back into the wall and seal the
hole to prevent air leaks. NOTE: Air Leaks in the wall
Wa
ll
Ethernet
Wiring
Figure 2. MARK THE MOUNTING HOLES
RS1 RS1 ODT ODT W3 W2 W1 BK
Y2
Y1
B/C RH RC AUX2 AUX2 AUX1 AUX1
Thermostat
Wires
RJ-45
Plug
Mounting Holes
Optional Mounting Hole
Thermostat Wiring
behind the Control can cause improper operation.
4. Attach the Control to the Sub-base.
5. Turn ON power to the heating and coolingalequipment.
11-HD13D1-10-EN
Ethernet
Wiring
Installation Guide
Field Wiring Connection Diagrams
Heat/Cool Diagrams
PAGE
DIAGRAM
DESCRIPTION
DIAGRAM 1
1 OR 2 STAGE COOLING W/TAM7 MODEL VARIABLE SPEED AIR HANDLER
DIAGRAM 2
1 STAGE COOLING W/GAM5A OR TAM4 MODEL AIR HANDLER
DIAGRAM 3
1 STAGE COOLING W/GAM5B MODEL AIR HANDLER
DIAGRAM 4
2 STAGE COOLING W/GAM5B MODEL AIR HANDLER
DIAGRAM 5
1 STAGE COOLING W/GAF2-S MODEL AIR HANDLER
DIAGRAM 6
1 STAGE COOLING W/GAF2-36M MODEL AIR HANDLER
10
DIAGRAM 7
1 STAGE COOLING W/GAT2 & GAM2 MODEL AIR HANDLER
10
DIAGRAM 8
1 STAGE COOLING W/TEM3 MODEL AIR HANDLER
11
DIAGRAM 9
1 STAGE COOLING W/TEM4 AIR HANDLER
11
DIAGRAM 10
1 OR 2 STAGE COOLING W/TEM6 AIR HANDLER
12
DIAGRAM 11
1 STAGE W/COOLING GAS FURNACE
12
DIAGRAM 12
1 OR 2 STAGE COOLING W/VARIABLE SPEED GAS FURNACE
13
DIAGRAM 13
1 OR 2 STAGE COOLING WITH S9V2 FURNACE
13
DIAGRAM 14
PACKAGE 1 OR 2 STAGE HEAT/COOL W/VARIABLE SPEED BLOWER
14
DIAGRAM 15
PACKAGE 1 STAGE HEAT/COOL W/NON-VARIABLE SPEED BLOWER
14
DIAGRAM 16
AMERISTAR 1 STAGE COOLING
Heat Pump Diagrams
PAGE
DIAGRAM
DESCRIPTION
15
DIAGRAM 17
1 OR 2 STAGE HEAT PUMP W/TAM7 MODEL AIR HANDLER
15
DIAGRAM 18
1 STAGE HEAT PUMP W/GAM5A OR TAM4 MODEL AIR HANDLER
16
DIAGRAM 19
1 STAGE HEAT PUMP W/GAM5B MODEL AIR HANDLER
16
DIAGRAM 20
2 STAGE HEAT PUMP W/GAM5B MODEL AIR HANDLER
17
DIAGRAM 21
1 STAGE HEAT PUMP W/GAF2-S MODEL AIR HANDLER
17
DIAGRAM 22
1 STAGE HEAT PUMP W/GAF2-36M MODEL AIR HANDLER
18
DIAGRAM 23
1 STAGE HEAT PUMP W/GAT2 & GAM2 MODEL AIR HANDLER
18
DIAGRAM 24
1 STAGE HEAT PUMP W/TEM3 MODEL AIR HANDLER
19
DIAGRAM 25
1 STAGE HEAT PUMP W/TEM4 AIR HANDLER
19
DIAGRAM 26
1 OR 2 STAGE HEAT PUMP W/TEM6 VARIABLE SPEED AIR HANDLER
20
DIAGRAM 27
PACKAGE 1 OR 2 STAGE HEAT PUMP W/VARIABLE SPEED BLOWER
20
DIAGRAM 28
PACKAGE 1 STAGE HEAT PUMP W/NON-VARIABLE SPEED BLOWER
21
DIAGRAM 29
AMERISTAR 1 STAGE HEAT PUMP
Dual Fuel Diagrams
PAGE
DIAGRAM
DESCRIPTION
22
DIAGRAM 30
1 OR 2 STAGE HEAT PUMP W/VARIABLE SPEED GAS FURNACE
22
DIAGRAM 31
1 STAGE HEAT PUMP W/NON-VARIABLE SPEED GAS FURNACE
23
DIAGRAM 32
1 OR 2 STAGE HEAT PUMP W/S9V2 FURNACE
23
DIAGRAM 33
PACKAGE 1 OR 2 STAGE DUAL FUEL W/VARIABLE SPEED BLOWER
11-HD13D1-10-EN
4.5
824 Programmable Wi-Fi Comfort Control
Heat/Cool Applications
1- 1 OR1 2- 1
STAGE
COOLING
W/TAM7
MODEL
VARIABLE
SPEED
AIR
HANDLER
Diagram
or 2 Stage
Cooling
w/TAM7
Model
Variable
Speed
Air
Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
OUTDOOR UNIT
AUX2
INDOOR UNIT
RC
R4
B/C
24VAC HOT
RH
COMMON
SOV
COOLING
FAN
YI
Y2
YO2
Y2
BK
W1
BK1
W2
W1
W3
W2
ODT
W3
HEATING
ODT
Y1 3
Y2 4
Optional
Outdoor
Sensor*
ODT
RS
Y/Y1
RS1
Optional
Remote
Sensor*
RS1
NOTES:
1. Cut and remove the BK jumper at the indoor unit
AFC Board
2. YI and YO connections must be made as shown
for freeze protection and internally mounted
condensate overflow circuits to function properly
3. If a 3rd party overflow condensate switches are
installed, wire between Y1 of the 824 and YI of the
airflow control board
4. R and Y2 connections at outdoor unit are required
only for two stage units
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
2- 1 STAGE COOLING W/GAM5A OR TAM4 MODEL AIR HANDLER
Diagram 2 - 1 Stage Cooling w/GAM5A or TAM4 Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
RC
RH
COMMON
B/C
SOV
COOLING
Y1 2
YI
Y2
YO1
BK
ODT
W1
W2
W1
W3
W2
ODT
W3
ODT
RS
FAN
HEATING
OUTDOOR UNIT
NOTES:
1. YI and YO connections must be made as shown for
freeze protection and internally mounted condensate
overflow circuits to function properly
2. If 3rd party overflow condensate switches are
installed, wire between Y1 of the 824 and YI of the
air handler
RS1
RS1
11-HD13D1-10-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
Installation Guide
Diagram
3 - 1 COOLING
Stage Cooling
w/GAM5B
Air Handler
3- 1 STAGE
W/GAM5B
MODELModel
AIR HANDLER
824 COMFORT CONTROL
AUX 1
AUX1
NOTES:
1. Y terminal must be connected at indoor unit for
selected compressor air flow
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
RC
RH
COMMON
SOV
COOLING
B/C
Y1
Y1
OUTDOOR UNIT
Y2
FAN
BK
HEATING
ODT
W1
W2
W1
W3
W2
ODT
W3
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
4- 2 STAGE
W/GAM5B
MODELModel
AIR HANDLER
Diagram
4 - 2 COOLING
Stage Cooling
w/GAM5B
Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
24VAC HOT
RC
COMMON
B/C
INDOOR UNIT
OUTDOOR UNIT
NOTES:
1. Y terminal must be connected at indoor unit for
selected compressor air flow
RH
SOV
COOLING
Y1
Y2
FAN
BK
HEATING
ODT
W2
W1
W3
W2
ODT
W3
RS1
RS1
Y2
W1
ODT
RS
Y1
Y1
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
11-HD13D1-10-EN
824 Programmable Wi-Fi Comfort Control
Diagram
5 - 1 COOLING
Stage Cooling
w/GAF2-S
Air Handler
5- 1 STAGE
W/GAF2-S
MODELModel
AIR HANDLER
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
24VAC HOT
RC
INDOOR UNIT
OUTDOOR UNIT
RH
COMMON
B/C
SOV
COOLING
Y1
Y2
FAN
BK
HEATING
W1
W2
W3
ODT
ODT
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
6- 1 STAGE
W/GAF2-36M
MODELModel
AIR HANDLER
Diagram
6 - 1 COOLING
Stage Cooling
w/GAF2-36M
Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
24VAC HOT
RC
INDOOR UNIT
R3
OUTDOOR UNIT
RH
COMMON
B/C
SOV
COOLING
Y1 2
YI
Y2
YO 1
FAN
NOTES:
1. YI and YO connections must be made as shown for
freeze protection and internally mounted condensate
overflow circuits to function properly
2. If 3rd party overflow condensate switches are
installed, wire between Y1 of the 824 and YI of the
air handler
3. Jumper R and O must be installed for blower to run
at cooling airflow
BK
HEATING
W1
W2
W3
ODT
ODT
ODT
RS
RS1
RS1
11-HD13D1-10-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
Installation Guide
7- 1 STAGE COOLING W/GAT2 & GAM2 MODEL AIR HANDLER
Diagram 7 - 1 Stage Cooling w/GAT2 & GAM2 Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
24VAC HOT
RC
INDOOR UNIT
OUTDOOR UNIT
RH
COMMON
SOV
COOLING
B/C
Y1
Y2
FAN
BK
HEATING
ODT
W1
W1
W2
W2
W3
W3
ODT
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
8- 1 STAGE COOLING W/TEM3 MODEL AIR HANDLER
Diagram 8 - 1 Stage Cooling w/TEM3 Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
24VAC HOT
RC
INDOOR UNIT
OUTDOOR UNIT
RH
COMMON
SOV
COOLING
B/C
Y1
Y2
FAN
HEATING
BK
W1
W1
W2
W2
W3
ODT
ODT
ODT
RS
RS1
RS1
10
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
11-HD13D1-10-EN
824 Programmable Wi-Fi Comfort Control
9-1 STAGE COOLING W/TEM4
Diagram 9 - 1 Stage Cooling w/TEM4 Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
INDOOR UNIT
RC
24VAC HOT
OUTDOOR UNIT
RH
B/C
COMMON
SOV
Y1
COOLING
Y2
FAN
BK
W1
HEATING
W2
W1
W3
W2
ODT
ODT
Optional
Outdoor
Sensor*
ODT
RS1
RS
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
10-1 OR 2 STAGE COOLING W/TEM6
Diagram 10 - 1 or 2 Stage Cooling w/TEM6 Air Handler
824 COMFORT CONTROL
AUX 1
NOTES:
1. Cut and remove the BK jumper at the indoor unit
2. R & Y2 connections at outdoor are only required for
two stage units
AUX1
AUX1
AUX 2
AUX2
AUX2
INDOOR UNIT
RC
R2
Y1
Y1
Y1
Y2
Y2
Y2 2
24VAC HOT
OUTDOOR UNIT
RH
COMMON
B/C
SOV
COOLING
FAN
BK
W1
HEATING
ODT
W2
W1
W3
W2
ODT
W3
ODT
RS
BK1
RS1
RS1
11-HD13D1-10-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
11
Installation Guide
11- 1 STAGE COOLING W/GAS FURNACE
Diagram 11 - 1 Stage w/Cooling Gas Furnace
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
RC
OUTDOOR UNIT
RH
COMMON
SOV
COOLING
B/C
Y1
Y2
FAN
BK
HEATING
ODT
W1
W2
W1
W3
W2
ODT
W3
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
12- 1 OR 2 STAGE COOLING W/VARIABLE SPEED GAS FURNACE
Diagram 12 - 1 or 2 Stage Cooling w/Variable Speed Gas Furnace
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
INDOOR UNIT
OUTDOOR UNIT
AUX2
24VAC HOT
R2
B/C
RC
NOTES:
1. Cut and remove the factory installed BK jumper at
the indoor unit IFC Board (some units may require
DIP switch settings)
2. R & Y2 connections at outdoor are only required for
two stage units
RH
COMMON
SOV
COOLING
Y1
Y2
FAN
HEATING
ODT
Y/Y2
BK
W1
BK1
W2
W1
W3
W2
RS1
RS1
12
Y/Y1
Y2 2
ODT
ODT
RS
Y1/Ylo
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
11-HD13D1-10-EN
824 Programmable Wi-Fi Comfort Control
13-1 OR 2 STAGE COOLING w/S9V2 FURNACE
Diagram
13 - 1 or 2 Stage Cooling with S9V2 Furnace
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
RC
OUTDOOR UNIT
R 4
RH
COMMON
SOV
COOLING
FAN
B/C
ODT
Y1/Ylo
Y2 3
Y/Y2
Y1
Y2
BK1
W1
W2
W1
W3
W2
ODT
ODT
RS
Y13
BK
HEATING
B/C
NOTES:
1. Cut and remove the BK jumper at the indoor unit
2. Remove the factory Y1-O jumper on the indoor unit
for heat pump systems for proper LED readout
3. Y1 and Y2 wiring from the 824 must connect to Y1
and Y2 of the indoor unit IFC for proper air flow and
LED read out
4. R connection at outdoor unit is required only for two
compressor/two stage units
RS1
RS1
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
14- PACKAGE 1 OR 2 STAGE HEAT/COOL w/VARIABLE SPEED BLOWER
Diagram 14 - Package 1 or 2 Stage Heat/Cool w/Variable Speed Blower
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
PACKAGE UNIT
RC
NOTES:
1. Remove “R” to “BK” jumper and clip all “Y”
connections at the integrated motor control board
(ICMC) to enable pulse width control of the variable
speed indoor blower. Ensure clipped wires are
capped and taped off.
RH
COMMON
SOV
COOLING
FAN
B/C
Y1
Y/Y1
Y2
Y2
BK
HEATING
BK1
W1
W1
W2
W2/X2
W3
ODT
ODT
ODT
RS
RS1
RS1
11-HD13D1-10-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
13
Installation Guide
15- PACKAGE 1 STAGE HEAT/COOL W/NON-VARIABLE SPEED BLOWER
Diagram 15 - Package 1 Stage Heat/Cool w/Non-Variable Speed Blower
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
PACKAGE UNIT
RC
RH
COMMON
B/C
COOLING
SOV
Y1
Y2
FAN
BK
HEATING
W1
W1
W2
W2
W3
ODT
ODT
Optional
Outdoor
Sensor*
ODT
RS1
RS
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
Optional
Remote
Sensor*
RS1
16- AMERISTAR 1 STAGE COOLING
Diagram 16 - Ameristar 1 Stage Cooling
824 COMFORT CONTROL
AUX1
AUX 1
NOTES:
1. B/C at the Control is 24v common and must be
connected to C at the Indoor and Outdoor Units
AUX1
AUX2
AUX 2
24VAC HOT
AUX2
INDOOR
UNIT
RC
RH
COMMON
SOV
COOLING
B/C
AIR
CONDITIONER
Y1
Y2
FAN
HEATING
BK
W1
W1
W2
W2
W3
ODT
ODT
ODT
RS
RS1
RS1
14
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
11-HD13D1-10-EN
824 Programmable Wi-Fi Comfort Control
4.6
Heat Pump Applications
17- 1 OR 2 STAGE HEAT PUMP W/TAM7 MODEL AIR HANDLER
Diagram 17 - 1 or 2 Stage Heat Pump w/TAM7 Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
24VAC HOT
RH
COMMON
SOV
COOLING
FAN
B/C
Y13
YI 2
Y2
YO2
Y1
Y2
Y2
BK
W1
BK1
W2
W1
W3
W2
ODT
W3
HEATING
ODT
X2 4
ODT
RS
Optional
Outdoor
Sensor*
RS1
Optional
Remote
Sensor*
RS1
NOTES:
1. Remove the factory installed BK jumper at the
indoor unit’s AFC Board
2. YI and YO connections must be made as shown
for freeze protection and internally mounted
condensate overflow circuits to function properly
3. Wire 3rd party condensate overflow switches
between Y1 of the 824 and YI of the airflow control
board
4. Do not connect X2 when using this control.
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
18- 1 STAGE HEAT PUMP W/GAM5A MODEL AIR HANDLER
Diagram 18 - 1 Stage Heat Pump w/GAM5A or TAM4 Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
24VAC HOT
RH
COMMON
SOV
COOLING
B/C
Y12
YI 1
Y2
YO 1
BK
W1
HEATING
W2
W1
W3
W2
ODT
W3
ODT
RS
FAN
ODT
X2 3
NOTES:
1. YI and YO connections must be made as shown
for freeze protection and internally mounted
condensate overflow circuits to function properly
2. Wire 3rd party condensate overflow switches
beteeen Y1 of the 824 and Y of the air handler
3. Do not connect X2 when using this control.
RS1
RS1
11-HD13D1-10-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
15
Installation Guide
19- 1 STAGE HEAT PUMP W/GAM5B MODEL AIR HANDLER
Diagram 19 - 1 Stage Heat Pump w/GAM5B Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
RH
COMMON
SOV
COOLING
B/C
X2 2
Y1
NOTES:
1. Y terminal must be connected at indoor unit for
selected compressor air flow
2. Do not connect X2 when using this control.
Y1
Y2
FAN
BK
HEATING
ODT
W1
W1
W2
W2
W3
W3
ODT
ODT
RS
Optional
Outdoor
Sensor*
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
20- 2 STAGE HEAT PUMP W/GAM5B MODEL AIR HANDLER
Diagram 20 - 2 Stage Heat Pump w/GAM5B Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
RC
SOV
COOLING
B/C
Y1
Y1
Y2
FAN
X2 2
RH
COMMON
OUTDOOR UNIT
NOTES:
1. Y terminal must be connected at indoor unit for
selected compressor air flow
2. Do not connect X2 when using this control.
Y1
Y2
BK
HEATING
ODT
W1
W1
W2
W2
W3
W3
ODT
ODT
RS
RS1
RS1
16
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
11-HD13D1-10-EN
824 Programmable Wi-Fi Comfort Control
21- 1 STAGE HEAT PUMP W/GAF2-S MODEL AIR HANDLER
Diagram 21 - 1 Stage Heat Pump w/GAF2-S Model Air Handler
824 COMFORT CONTROL
AUX 1
NOTES:
1. Do not connect X2 when using this control.
AUX1
AUX1
AUX 2
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
24VAC HOT
X2 1
RH
B/C
COMMON
SOV
COOLING
Y1
Y2
FAN
BK
W1
HEATING
W2
W3
ODT
ODT
Optional
Outdoor
Sensor*
ODT
RS1
RS
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
22- 1 STAGE HEAT PUMP W/GAF2-36M MODEL AIR HANDLER
Diagram 22 - 1 Stage Heat Pump w/GAF2-36M Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
INDOOR UNIT
RC
24VAC HOT
SOV
COOLING
FAN
B/C
Y12
YI 1
Y2
YO1
X23
RH
COMMON
OUTDOOR UNIT
NOTES:
1. YI and YO connections must be made as shown
for freeze protection and internally mounted
condensate overflow circuits to function properly
2. Wire 3rd party condensate overflow switches
beteeen Y1 of the 824 and YI of the air handler
3. Do not connect X2 when using this control.
BK
HEATING
W1
W2
W3
ODT
ODT
ODT
RS
RS1
RS1
11-HD13D1-10-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
17
Installation Guide
23- 1 STAGE
HEAT PUMP
W/GAT2
& GAM2
MODELModel
AIR HANDLER
Diagram
23 - 1 Stage
Heat Pump
w/GAT2
& GAM2
Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
NOTES:
1. Do not connect X2 when using this control.
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
RH
COMMON
SOV
COOLING
B/C
X2 1
Y1
Y2
FAN
BK
HEATING
ODT
W1
W1
W2
W2
W3
W3
ODT
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
24- 1 STAGE HEAT PUMP W/TEM3 MODEL AIR HANDLER
Diagram 24 - 1 Stage Heat Pump w/TEM3 Model Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
NOTES:
1. Do not connect X2 when using this control.
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
RC
RH
COMMON
SOV
COOLING
B/C
OUTDOOR UNIT
X21
Y1
Y2
FAN
BK
HEATING
W1
W1
W2
W2
W3
ODT
ODT
ODT
RS
RS1
RS1
18
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
11-HD13D1-10-EN
824 Programmable Wi-Fi Comfort Control
25- 1 STAGE
PUMP
MODELAir
AIR
HANDLER
Diagram
25 - 1HEAT
Stage
Heat W/TEM4
Pump w/TEM4
Handler
824 COMFORT CONTROL
AUX 1
AUX1
NOTES:
1. Do not connect X2 when using this control.
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
RH
COMMON
SOV
COOLING
B/C
X21
Y1
Y2
FAN
BK
HEATING
ODT
W1
W1
W2
W2
W3
W3
ODT
Optional
Outdoor
Sensor*
ODT
RS
RS1
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
26- 1 OR 2 STAGE HEAT PUMP W/TEM6 MODEL VARIABLE SPEED AIR HANDLER
Diagram 26 - 1 or 2 Stage Heat Pump w/TEM6 Variable Speed Air Handler
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
COMMON
SOV
COOLING
FAN
HEATING
AUX2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RH
B/C
Y1
Y1
Y1
Y2
Y2
Y2
X2 2
NOTES:
1. Remove the factory installed BK jumper at the
indoor unit
2. Do not connect X2 whene using this control.
3. Y2 connection at outdoor is only required for two
stage units
BK
BK1
W1
W1
W2
W2
W3
ODT
ODT
ODT
RS
RS1
RS1
11-HD13D1-10-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
19
Installation Guide
Diagram 27 - Package 1 or 2 Stage Heat Pump w/Variable Speed Blower
27 - Package 1 or 2 Stage Heat Pump w/Variable Speed Blower
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
PACKAGE UNIT
RC
NOTES:
1. Remove “R” to “BK” jumper and clip all “Y”
connections at the integrated motor control board
(ICMC) to enable pulse width control of the variable
speed indoor blower. Ensure clipped wires are
capped and taped off.
RH
COMMON
SOV
COOLING
FAN
B/C
Y1
Y/Y1
Y2
Y2
BK
HEATING
BK1
W1
W1
W2
W2/X2
W3
ODT
ODT
ODT
RS
RS1
RS1
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
28 - Package
1 Stage1 Heat
Speed Speed
BlowerBlower
Diagram
28 - Package
StagePump
Heat w/Non-Variable
Pump w/Non-Variable
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
24VAC HOT
AUX2
AUX2
PACKAGE UNIT
RC
RH
COMMON
SOV
COOLING
B/C
Y1
Y1
Y2
FAN
BK
HEATING
W1
W1
W2
W2/X2
W3
ODT
ODT
ODT
RS
RS1
RS1
20
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
11-HD13D1-10-EN
824 Programmable Wi-Fi Comfort Control
29 - AMERISTAR 1 STAGE HEAT PUMP
Diagram 29 - Ameristar 1 Stage Heat Pump
824 COMFORT CONTROL
AUX1
AUX 1
AUX1
AUX2
AUX 2
24VAC HOT
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
D1
RH
COMMON
B/C
SOV
COOLING
B3
Y1
X24
Y2
FAN
C2
NOTES:
1. D at the Outdoor Unit must be wired to W1 or W2 for
electric heat during defrost
2. B/C at the Control is 24v common and must be
connected to C at the Indoor and Outdoor Units
3. O at the Control must be connected to B at the
Outdoor Unit for SOV operation - SOV must also be
configured to be energized in heating mode in the
824 Installer Settings>Standard
4. Do not connect X2 when using this control.
BK
HEATING
ODT
W1
W1
W2
W2
W3
W3
ODT
ODT
RS
RS1
RS1
11-HD13D1-10-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
21
Installation Guide
4.7
Dual Fuel Applications
30 - 1 OR 2 STAGE HEAT PUMP W/VARIABLE SPEED GAS FURNACE
Diagram 30 - 1 or 2 Stage Heat Pump w/Variable Speed Gas Furnace
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
24VAC HOT
RC
INDOOR UNIT
OUTDOOR UNIT
X2 3
RH
COMMON
SOV
COOLING
B/C
Y1
Y2
FAN
BK
HEATING
ODT
Y1/Ylo
Y/Y2
Y/Y1
Y2
W1
BK 1
W2
W1
W3
W2
2 ODT
ODT
RS
NOTES:
1. Cut and remove the factory installed BK jumper at
the indoor unit (some units may require DIP switch
settings)
2. For restricted mode operation, a wired ODT sensor
must be connected to the 824
3. Connection to X2 is not required for this
configuration
Optional
Outdoor
Sensor*
RS1
RS1
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle with
HVAC wires. Also, keep away from high
voltage wiring to avoid interference.
31 - 1 STAGE HEAT PUMP W/NON-VARIABLE SPEED GAS FURNACE
Diagram 31 - 1 Stage Heat Pump w/Non-Variable Speed Gas Furnace
824 COMFORT CONTROL
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
24VAC HOT
RC
INDOOR UNIT
OUTDOOR UNIT
X2 2
RH
COMMON
SOV
COOLING
B/C
Y1
NOTES:
1. For restricted mode operation, a wired ODT sensor
must be connected to the 82
2. Connection to X2 is not required for this
configuration
Y2
FAN
BK
HEATING
W1
W1
W2
W2
W3
ODT
ODT 1
ODT
RS
RS1
RS1
22
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote sensor
wires in the same bundle with HVAC wires.
Also, keep away from high voltage wiring to
avoid interference.
11-HD13D1-10-EN
824 Programmable Wi-Fi Comfort Control
32 - 1 OR
HEAT PUMP
w/S9V2
FURNACE
Diagram
322- STAGE
1 or 2 Stage
Heat Pump
w/S9V2
Furnace
824 COMFORT CONTROL
AUX1
AUX 1
AUX1
AUX2
AUX 2
AUX2
INDOOR UNIT
OUTDOOR UNIT
RC
24VAC HOT
X2 4
RH
COMMON
B/C
B/C
SOV
COOLING
Y13
Y1/Ylo
Y2 3
Y/Y2
FAN
BK
NOTES:
1. Cut and remove the BK jumper at the indoor unit
2. Remove the factory Y1-O jumper on the indoor unit
for heat pump systems for proper LED readout
3. Y1 and Y2 wiring from the 824 must connect to Y1
and Y2 of the indoor unit IFC for proper air flow and
LED read out
4. Connection to X2 is not required for this
configuration
Y1
Y2
BK1
W1
HEATING
W2
W1
W3
W2
ODT
ODT
Optional
Outdoor
Sensor*
ODT
RS1
RS
Optional
Remote
Sensor*
RS1
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle
with HVAC wires. Also, keep away
from high voltage wiring to avoid
interference.
Diagram 33 - Package 1 or 2 Stage Dual Fuel w/Variable Speed Blower
33- PACKAGE 1 OR 2 STAGE DUAL FUEL W/VARIABLE SPEED BLOWER
AUX 1
AUX1
AUX1
AUX 2
AUX2
AUX2
OUTDOOR UNIT
24VAC HOT
RC
COMMON
B/C
Y1
Y/Y1
Y2
Y2
RH
SOV
COOLING
FAN
BK
HEATING
NOTES:
1. Remove “R” to “BK” jumper and clip all “Y”
connections at the integrated motor control board
(ICMC) to enable pulse width control of the variable
speed indoor blower. Ensure clipped wires are
capped and taped off.
2. For restricted mode operation, a wired ODT sensor
must be connected to the 824.
BK 1
W1
W1
W2
W2/X2
W3
ODT
ODT2
ODT
RS
RS1
RS1
11-HD13D1-10-EN
Optional
Outdoor
Sensor*
Optional
Remote
Sensor*
*Caution: Do not run Outdoor/Remote
sensor wires in the same bundle with HVAC
wires. Also, keep away from high voltage
wiring to avoid interference.
23
Installation Guide
5.
System Setup
5.1
Power-Up Sequence
When the 824 Control is connected to the Sub-base, the
Control initiates a 90-120 second power-up sequence.
During the power-up sequence, the Screen Calibration
option is available for five seconds (Screen Calibration
is available for five minutes if the screen has never been
calibrated and following a Restore Factory Defaults
command).
If the screen is not pressed within five minutes, the Control
will default to previously stored Screen Calibration settings.
The 824 Control is factory calibrated and can be recalibrated
at any time by rebooting the Control.
Note: Temperature display may be inaccurate until the 824
Control acclimates to ambient room conditions, which may
take up to one hour.
5.2
Guided Setup Wizards
The 824 Control features two Setup Wizards, the Installation
Wizard and the User Setup Wizard. The Installation Wizard
guides installers through the installation and configuration
process, and the User Setup Wizard guides Homeowners
through user-configurable settings.
Installation Wizard
The Installation Wizard appears when 1) the 824 Control is
powered on for the first time, 2) when the Restore Factory
Defaults function is invoked (Home>Menu>Service>
Technician Access>Proceed>Restore Factory Defaults),
and 3) when it is selected directly (Home>Menu>Service>
Technician Access>Proceed>Installation Wizard).
By following the navigational steps and screen prompts,
installers are guided through the Time and Date screens,
Installer Setup screens (see “5.4 Installer Setup Screens” on
page 25 for detailed descriptions of each of the Installer
Setup Screens), Reminders screens and the Dealer
Code configuration screens. Each of these menus can
be individually accessed after completing the Installation
Wizard.
User Setup Wizard
The User Setup Wizard is accessed navigating to
Home>Menu>Settings>User Setup Wizard. By following the
navigational steps and screen prompts, homeowners are
guided through the Display, Schedules, Guided Schedule,
Network, Nexia and Weather configuration screens. Each
of these menus may also be accessed individually. Refer
to the User Guide for detailed information on user settings.
5.3
Smart Optimization
The 824 Control is equipped with Smart Optimization.
By executing a series of blower and active call on/off
tests, Smart Optimization will customize the 824 Control
to each unique environment and increase the accuracy
of the sensed indoor temperature and overall system
performance.
Smart Optimization is enabled by default and will
automatically execute approximately 18 hours after initial
power up. Smart Optimization takes 90 minutes to complete
and during the process, heating and cooling operations are
disabled. The screen will indicate that the 824 Control is in
Smart Optimization mode.
To delay Smart Optimization for an additional 18 hours,
touch the 824 Control Screen and hold for five seconds.
To disable Smart Optimization altogether, navigate to
Home>Smart Optimization and select Disable and press
Apply.
To enable Smart Optimization, navigate to Home>Smart
Optimization and select Enable and press Apply. Smart
Optimization will execute in approximately 18 hours.
To manually trigger Smart Optimization, first disable, then
re-enable the feature.
INSTALLATION WIZARD
MENU ITEMS
DESCRIPTION
Date and Time
Set the current date, time and select whether Daylight Savings Time is on or off.
Installer Setup
Configure the basic equipment components installed and customize how the control operates. See
Sections 5.4.1 through 5.4.7 for detailed information on installer setup options.
Service Reminders
Various service reminders can be enabled on the 824 control based on the system configured. Reminder
options are System, Filter, Ventilation, UV Light and Humidifier. The frequency of each reminder can be
selected based on calendar or run time days.
Dealer Identification Code
The dealer identification code is used to populate the Dealer Contact Information and associate this device
with a Nexia Dealer Portal account. Enter the primary phone number of the dealership to activate this
feature. Only controls connected to the Internet will auto-populate the dealer information.
24
11-HD13D1-10-EN
824 Programmable Wi-Fi Comfort Control
5.4
Installer Setup Screens
From the Installer Setup screens, individual parameters are configured and modified. Use the up and down arrows to scroll
through the groups of settings. To change a setting contained in a particular group, press Edit and press Next to navigate to
the desired setting. Press Save to save changes or Exit to discard changes.
5.4.1 Group 1 Standard Settings
MENU ITEM
OPTIONS [DEFAULT]
DESCRIPTION
Outdoor Unit Type
None, [Cooling Only], Heat Pump
Select the type of outdoor unit installed
Outdoor Unit Stages
[Single Stage], Two Stage
Select the number of outdoor unit stages
Compressor Type
Single Compressor Two Stage,
[Two Compressor Two Stage]
Select the compressor type for multi-stage outdoor
units
Indoor Unit Type
[Gas/Oil], Electric, Hydronic
Select the type of indoor unit installed
Indoor Heat Stages
[Single Stage], Two Stage, Three Stage
Select the number of indoor heat stages
Indoor Blower Type
Variable, [Non - Variable]
Select the indoor blower type (Constant Torque motors
are considered non-variable speed)
SOV Operation
[with Cooling Call], with Heating Call
Select which mode of operation energizes the switchover valve
5.4.2 Group 2 Equipment Settings
MENU ITEM
OPTIONS [DEFAULT]
DESCRIPTION
Compressor Cooling Cycles Per Hour
2 to 6 Cph [3]
Select the number of cycles per hour during cooling operation
1st Stage Compressor Cooling Cycles Per Hour
2 to 6 Cph [3]
Select the number of cycles per hour during 1st stage cooling
operation
2nd Stage Compressor Cooling Cycles Per Hour
2 to 6 Cph [3]
Select the number of cycles per hour during 2nd stage cooling
operation
Compressor Heating Cycles Per Hour
2 to 6 Cph [3]
Select the minimum runtime (MRT) of stage 1 indoor heat
1st Stage Compressor Heating Cycles Per Hour
2 to 6 Cph [3]
Select the minimum runtime (MRT) of stage 2 indoor heat
2nd Stage Compressor heating Cycles Per Hour
2 to 6 Cph [5]
Select the minimum off time (MOT) for indoor heat operation
Indoor Heater Cycles Per Hour
2 to 6 Cph [5]
Select the number of cycles per hour during indoor heat operation
1st Stage Indoor Heat Cycles Per Hour
2 to 6 Cph [5]
Select the number of cycles per hour during 1st stage indoor heat
operation
2nd Stage Indoor Heat Cycles Per Hour
2 to 6 Cph [5]
Select the number of cycles per hour during 2nd stage indoor heat
operation
3rd Stage Indoor Heat Cycles Per Hour
2 to 6 Cph [5]
Select the number of cycles per hour during 3rd stage indoor heat
operation
5.4.3 Group 3 Sensor Settings
MENU ITEM
OPTIONS [DEFAULT]
DESCRIPTION
Select Outdoor Temperature Sensor
[No ODT Sensor],
Remote ODT Sensor
Select whether an outdoor temperature sensor has been connected
Calibrate Outdoor Temperature Sensor
-5°F to 5°F
Calibrate the outdoor temperature sensor
Select Indoor Temperature Sensor
[Onboard IDT Sensor]
Remote IDT Sensor
Select whether the indoor temperature is being sensed by the 824 Control
onboard sensor or wired remote sensor
Calibrate Indoor Temperature Sensor
-5°F to 5°F
Calibrate the indoor temperature sensor
Calibrate Onboard Humidity Sensor
-5% - 5%
Calibrate the onboard humidity sensor
11-HD13D1-10-EN
25
Installation Guide
5.4.4 Group 4 Accessories Settings
MENU ITEM
OPTIONS [DEFAULT] DESCRIPTION
Filtration Type Installed
Air Cleaner,
[Media Filter]
Select the filter type installed
Humidifier Installed
[None], Yes
Select whether a humidifier is installed
Humidifier - Select Aux Contact
[Aux1], Aux2
Select which set of Aux contacts is controlling the humidifier
Humidifier Type
[Powered/Bypass], Steam
Select what type of humidifier is installed
Humidifier Control
[RH Control], Frost Control
Select how the humidifier will be controlled (Outdoor temperature
sensor must be connected and enabled to allow Frost Control to be
selectable)
Humidifier Fan Action
[Humidify with active Heat
Call], Humidify without
active Heat Call
Select when the humidifier is allowed to operate
Airflow During Humidifier Only Mode
35% to [100%]
Select the desired airflow when the humidifier is operating without an
active call for heat - requires variable speed blower
UV Light Installed
[None], Yes
Select whether a UV Light is installed
Ventilation Installed
[None], Yes
Select whether ventilation is installed
Ventilation - Select Aux Contact
Aux1, [Aux2]
Select which set of Aux contacts is controlling the ventilation system
Minimum Ventilation Runtime
0 - 60 Minutes [5 Minutes]
Select the minimum runtime per hour for ventilation system
Outdoor Temperature Ventilation Override
[Disable], Enable
Select whether an outdoor temperature override is allowed (Outdoor
temperature sensor must be connected and enabled to allow this
setting to be selected)
Ventilator Fan Action
[Ventilate with Blower].
Ventilate without Blower
Select whether the indoor blower operates on a call for ventilation
Ventilation - Minimum Outdoor Temperature
*-10°F to 50°F [0°]
Select the minimum outdoor temperature that ventilation is allowed
Ventilation - Maximum Outdoor Temperature
80°F to 110°F [100°F]
Select the maximum outdoor temperature that ventilation is allowed
Accumulate Overridden Runtime
[No], Yes
Select whether the overridden ventilation runtime will be made up
Accumulated Period
[4 hours -recover based
on outdoor conditions],
24 hours - recover based
on outdoor conditions,
4 hours - recover to
maintain minimum
ventilation,
24 hours - recover to
maintain minimum
ventilation
Select when to recover missed ventilation runtime due to outdoor
conditions exceeding the minimum/maximum outdoor temperature
setting (The first two options will not meet ASHRAE 62.2 Standard for
minimum ventilation requirements)
Dehumidifier Installed
[None], Yes
Select whether a dehumidifier is installed
Dehumidifier - Select Aux Contact
Aux1, [Aux2]
Select which set of aux contacts is controlling the ventilation system
Dehumidifier Control Options
[Stand Alone Operation],
With Active Call for Cooling
Only
Select when the dehumidifier is allowed to operate
Run System Fan with Dehumidifier Request
Yes, [No]
Select if the indoor fan should operate with a call for dehumidifier
operation
26
11-HD13D1-10-EN
824 Programmable Wi-Fi Comfort Control
5.4.5 Group 5 Comfort Settings
MENU ITEM
OPTIONS [DEFAULT]
DESCRIPTION
Enable Dehumidification
[Enable], Disable
Select if enhanced dehumidification features are enabled. See section
7.2 Advanced Operation - Dehumidification for additional information.
Dehumidification Overcooling Limit - Degrees
[0°] to 3°F
Select the maximum amount of overcooling allowed when the indoor
humidity exceeds the cooling target humidity setpoint. See section 7.2
Advanced Operation - Dehumidification for additional information.
Smart Continous Fan
Enable, [Disable]
Select to enable or disable Smart Continous Fan
Control Response Rate
[Normal], Fast
Select the response rate of the control. See section 7.1 Advanced
Operation - Control Response Rate for additional information.
Aggressive Recovery > 2° Setpoint Change
Enable, [Disable]
Select whether the 10-minute staging inhibit is disabled (heating or
cooling mode) with a setpoint change greater than 2°. See section
7.7.1 Advanced Operation - Aggressive Recovery for additional
information.
Heating Aggressive Recovery by Outdoor
Temperature
Enable, [Disable]
Select whether the 10-minute staging inhibit is disabled during heating
mode when the outdoor temperature falls below the selected outdoor
temperature (Outdoor temperature sensor must be connected and
enabled to allow this setting to be selected)
Heating Aggressive Recovery
Setting
0° to 70°F [40°F]
Select the outdoor temperature for Heating Aggressive Recovery
Warm Air Discharge
Enable, [Disable]
When enabled the indoor airflow will be limited to 80% on a call for
heat pump heating. This only applies to heat pump heating with no call
for aux heat (An indoor unit with a variable speed blower is required)
11-HD13D1-10-EN
27
Installation Guide
5.4.6 Group 6 Airflow Settings
MENU ITEM
OPTIONS [DEFAULT]
VS Blower On Delay - Clg
[No Delay],
Enhanced Mode,
7.5 Minutes @ 80%,
4 Minutes @ 80%,
1 Minute @ 50%,
30 Seconds
Non VS Blower On Delay - Clg
[No Delay],
15 Seconds
30 Seconds
Select the blower on delay for cooling operation
VS Blower Off Delay - Clg
[No Delay],
1.5 Minutes @ 100%,
45 Seconds @ 100%,
30 Seconds @ 50%,
1.5 Minutes @ 50%,
3 Minutes @ 50%,
30 Seconds @ 35%
Select the blower off delay for cooling operation
Non VS Blower Off Delay - Clg
[No Delay],
30 Seconds,
60 Seconds,
90 Seconds
Select the blower off delay for cooling operation
VS Blower On Delay - Comp Htg
[No Delay],
Enhanced Mode,
7.5 Minutes @ 80%,
4 Minutes @ 80%,
1 Minute @ 50%,
30 Seconds
Non VS Blower On Delay - Comp Htg
[No Delay],
15 Seconds,
30 Seconds
Select the blower on delay for compressor
heating operation
VS Blower Off Delay - Comp Htg
[No Delay],
1.5 Minutes @ 100%,
45 Seconds @ 100%,
30 Seconds % 50%,
1.5 Minutes @ 50%,
3 Minutes @ 50%,
30 Seconds @ 35%
Select the blower off delay for compressor
heating operation
Non VS Blower Off Delay - Comp Htg
[No Delay],
30 Seconds,
60 Seconds,
90 Seconds
Select the blower off delay for compressor
heating operation
Hydronic Heat Blower On Delay
[No Delay],
30 Seconds,
60 Seconds
Select the blower on delay for hydronic heating
operation
Hydronic Heat Blower Off Delay
[No Delay],
30 Seconds,
60 Seconds,
90 Seconds
Select the blower off delay for hydronic heating
operation
Compressor Low Stage Air Flow% - Comp Clg
35% to 60% [50%]
Select the 1st stage air flow for a two stage/two
compressor unit in cooling mode
Compressor Low Stage Air Flow% - Comp Clg
55% to [80%]
Select the 1st stage air flow for a two stage/
single compressor unit in cooling mode
Compressor Low Stage Air Flow% - Comp Htg
35% to 60% [50%]
Select the 1st stage air flow for a two stage/two
compressor unit in heating mode
Compressor Low Stage Air Flow% - Comp Htg
55% to [80%]
Select the 1st stage air flow for a two stage/
single compressor unit in heating mode
28
DESCRIPTION
Select the blower on delay for cooling operation
Enhanced Mode is a tiered Blower On Delay for
variable speed blowers only (1 minute at 50%,
7.5 minutes at 80%, then 100%)
Select the blower on delay for compressor
heating operation
Enhanced Mode is a tiered Blower On Delay for
variable speed blowers only (1 minute at 50%,
7.5 minutes at 80%, then 100%)
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824 Programmable Wi-Fi Comfort Control
5.4.7 Group 7 Lockout Settings
An Outdoor Temperature Sensor must be enabled for Lockout settings to be selectable.
MENU ITEM
OPTIONS [DEFAULT]
DESCRIPTION
Auxiliary Heat Lockout
[Disable], Enable
Enable auxiliary heat lockout (10° minimum separation when enabling
auxiliary heat lockout and compressor heat lockout)
Auxiliary Heat Lockout Setting
32°F to 70°F Degrees [45°]
Select an outdoor temperature to prevent auxiliary heat above the selected
outdoor temperature
Compressor Lockout
[Disable], Enable
Enable compressor heat lockout (10° minimum separation when enabling
auxiliary heat lockout and compressor heat lockout)
Compressor Lockout Setting
5°F to 70°F Degrees [30]
Select an outdoor temperature to prevent compressor heating below the
selected outdoor temperature
Defrost Heater Balance Point (W1)
[Disable], Enable
Enable defrost heater balance point for W1, W2 and W3 (only applicable
when indoor heat is electric or hydronic)
Defrost Heater Balance Point (W1)
Setting
40°F to [55°F]
Select an outdoor temperature to disallow 1st, 2nd and 3rd stage of indoor
heat during defrost above this temperature
Defrost Heater Balance Point (W2)
[Disable], Enable
Enable defrost heater balance point for W1 and W2 (only applicable when
indoor heat is electric or hydronic)
Defrost Heater Balance Point (W2)
Setting
10°F to 50°F [40°F]
Select an outdoor temperature to disallow 2nd and 3rd stage of indoor heat
during defrost above this temperature
Defrost Heater Balance Point (W3)
[Disable], Enable
Enable defrost heater balance point for W3 only (only applicable when indoor
heat is electric or hydronic)
Defrost Heater Balance Point (W3)
Setting
[5°F] to 45°F [25°F]
Select an outdoor temperature to disallow 3rd stage of indoor heat during
defrost above this temperature
Compressor Cooling 1st Stage Lockout
[Disable], Enable
Enable compressor cooling 1st stage lockout
Compressor Cooling 1st Stage Lockout
Setting
80°F to [120°F]
Select an outdoor temperature to force the system to 2nd stage compressor
cooling
Compressor Heating 1st Stage Lockout
[Disable], Enable
Enable compressor heating 1st stage lockout
Compressor Heating 1st Stage Lockout
Setting
0°F to [50°F]
Select an outdoor temperature to force the system to 2nd stage compressor
heating
Furnace Heating 1st Stage Lockout
[Disable], Enable
Enable furnace heating 1st stage lockout
Furnace Heating 1st Stage Lockout
Setting
0°F to [50°F]
Select an outdoor temperature to force the system to 2nd stage furnace
heating
5.5
Service Reminders
5.6
Dealer Code
Reminders can be enabled to trigger an alert when service
is required. The reminder is time-based and can be
configured on system run time or calendar days. Reminders
can be configured for humidifiers, filters, ventilation
systems, UV lights and HVAC system maintenance. The
type of reminders available are based on the accessories
enabled in the installer settings.
When an 824 Control is connected to the Internet, a Dealer
Code can be entered to auto-populate the dealer’s contact
information and logo. The code is the dealer’s registered
phone number listed on ASDealernet. The Dealer Code is
also used to associate this device with a specific dealer on
the Dealer Diagnostic Portal.
11-HD13D1-10-EN
5.7
Software Updates
To take full advantage of the features and benefits of the
824, the Control should have the latest software revision
installed.
When the 824 is connected to a Nexia™ Home Intelligence
account, software updates will occur automatically and do
not require user intervention.
The software may also be manually updated. This
procedure requires a computer with an Internet connection,
a USB Flash Drive and the included USB connector. From
the computer, go to www.AmericanStandardAir.com. From
the Products tab, select Thermostat Controls and click on
the 824. Scroll down the page and click on Get Software
Updates and follow the on-screen prompts.
29
Installation Guide
6.
Basic Operation
6.1
PI Control
The 824 Control uses proprietary control schemes to
provide comfort and energy efficiency. The Control senses
indoor temperature and determines capacity needed based
on the following parameters:
• Mode of operation
• Proportional Error - distance from setpoint
• Integral Error - Time away from setpoint
Integral Error
72º
Set Point
Temperature
2 Seconds
Room
Temperature
A = Proportional Error
B + C + D... = Integral Error
6.3
Load Value - Cooling
6.4
Duty Cycles
0-100 Single Stage Compressor
0-200 Two-Stage Compressor
A Load Value of 50 represents a request of 50% demand
for single stage cooling units (“Y”) or 50% demand for stage
one of multistage cooling units (“Y1”).
A Load Value of 150 represents a request of 100% demand
for stage one (“Y1”) and 50% demand of stage two (“Y2”)
for multistage cooling units.
Indoor temperature control is achieved by duty cycling the
equipment when the load value is less than 100% of the
current stage of operation. The duty cycle rate is dependent
on the calculated load value.
The duty cycle chart below indicates the number of cycles
at 50% load (i.e. LV = 50).
6 CPH
6.2
Load Value - Heating
The 824 Control uses proportional plus integral error to
determine the amount of capacity required. The calculated
capacity is displayed as load value. Load Value is a numerical
representation of the needed capacity to maintain setpoint.
The load value range is dependent on the applied system.
0-100
Single Stage Heat Pump Only
0-200
Two State Heat Pump Only
0-200
Single Stage Heat Pump + 1 Stage Electric/Wet Heat
0-300
Single Stage Heat Pump + 2 Stage Electric/Wet Heat
0-400
Single Stage Heat Pump + 3 Stage Electric/Wet Heat
0-300
Two Stage Heat Pump + 1 Stage Electric/Wet Heat
0-400
Two Stage Heat Pump + 2 Stage Electric/Wet Heat
0-500
Two Stage Heat Pump + 3 Stage Electric/Wet Heat
0-100
Single Stage Indoor Heat Only
0-200
Two Stage Indoor Heat Only
0-300
Three Stage Indoor Heat Only
0-175
Single Stage Heat Pump + 1 Stage Gas/Oil Heat
0-275
Single Stage Heat Pump + 2 Stage Gas/Oil Heat
0-375
Single Stage Heat Pump + 2 Stage Gas/Oil Heat
0-275
Two Stage Heat Pump + 1 Stage Gas/Oil Heat
0-375
Two Stage Heat Pump + 2 Stage Gas/Oil Heat
0-475
Two Stage Heat Pump + 3 Stage Gas/Oil Heat
2 CPH
1 Hour
As with all PI-based controls the indoor temperature will
fluctuate above and below the user selected setpoint to
maintain comfort in the space. Adjusting the factory set
CPH (Cycles per Hour) can affect how tight the Control
operates around the setpoint. The CPH can be adjusted in
the Installer Setup>Equipment Settings (2 – 6 CPH)
• Factory default for compressor operation is 3 CPH
• Factory default for indoor heat is 5 CPH
Effects of changing the cycle rates
Lower CPH results in longer run cycles with less cycling
but the indoor temperature may deviate above and below
setpoint.
Higher CPH results in tighter indoor temperature control
but shorter, more frequent cycles.
6.5
Overshoot Clamp
The 824 Control will enforce an “off cycle” anytime the
control overshoots more than 2.5°F. Once the indoor
temperature is within 0.75°F of setpoint an “on cycle” is
allowed dependent on load value and minimum off times.
Cooling Overshoot Clamping Example
75º
74.25º
Actual Temperature
72.5º
OFF Cycle Enforced ON Cycle Allowed
30
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824 Programmable Wi-Fi Comfort Control
6.6
Stage Thresholds
The threshold to allow operation is a Load Value greater
than 5 and operation is always terminated with a Load
Value less than 1.
Load Value also determines when additional stages of
operation are requested. To prevent rapid cycling between
stages, a stage threshold is enforced. The stage threshold
is dependent on the applied system.
100-110
STAGE 3
STAGE 1
COMPRESSOR STAGING THRESHOLDS
STAGE 2
Y1 to Y2
100-115
HP to W1
HP to Dual Fuel
Stage Inhibits
When the stage threshold is exceeded, a stage inhibit is
applied. The stage inhibit calculates the rate of recovery
over a 15-minute period and determines if the next stage is
required to meet the current demand. If the rate of recovery
is great enough, a new 15-minute inhibit is enabled. The
Control will not go to the next stage of operation until it
determines that the current stage cannot satisfy the current
demand. Stage inhibits only apply between compressor
stages and compressor heat to indoor heat. Stage inhibits
do not apply to indoor heat stages.
Stage inhibits can be disabled in the 824 Control
Installer Setup>Comfort Settings.
Stage Inhibits - Compressor Staging
LV=200
Y1 “ON”
LV=100
100-125
6.7
Y2 “ON”
LV = 110
Y1 “ON”
LV = 100
AUX ELECTRIC HEAT - STAGING THRESHOLDS
STAGE 2
STAGE 3
STAGE 4
START INHIBIT
STAGE 5
STAGE 1
100- Compressor to W1
115
200- W1 to W2
215
LV=400
LV=300
LV=200
LV=100
300- W2 to W3
315
15 Minutes
LOAD VALUE (LV)
Stage Inhibits - Compressor to Aux Heat
Y1 “ON”
LV = 115
AUX FOSSIL HEAT - STAGING THRESHOLDS
W1 “OFF”
LV = 100
STAGE 3
175W2 to W3 190
START INHIBIT
15 Minutes
LOAD VALUE (LV)
LV=300
LV=200
175W1 to W2
190
STAGE 4
100- Inhibit - Compressor to W1
125
LV=100
STAGE 1
STAGE 2
W1 “ON”
Stage Inhibits - Duel Fuel
Y1 “ON”
W1 “ON”
Y1 “ON”
45 Second
Cool Down
AUX WET HEAT - STAGING THRESHOLDS
STAGE 3
LV = 125
100- Compressor to W1
125
STAGE 4
STAGE 1
STAGE 2
200W1 to W2
215
LV = 100
START INHIBIT
11-HD13D1-10-EN
LV=300
LV=200
LV=100
15 Minutes
LOAD VALUE (LV)
31
Installation Guide
System Mode
The 824 has (5) System Modes which can be selected…
Heating, Cooling, Off, Emergency Heat and Auto.
• Heating – System will only operate in heating mode
• Cooling – System will only operate in the cooling
mode
• Off – System will not operate in heating or cooling
mode
• Emergency Heating – System will operate the indoor
heat source only (this is only available when the
outdoor unit type is a heat pump)
• Auto - The Control will determine which mode of
operation based on the following rules:
• Heating - Indoor temperature is equal or less than
heating setpoint
• Cooling – Indoor temperature is equal to or greater
than cooling setpoint or within 1°F of cooling setpoint
There is minimum deadband between heating and cooling
setpoints of 3°F
6.8
Fan Mode
6.9
Air Cleaner Mode
The 824 has three Fan Modes:
• Auto – Fan only runs with a call for heating or cooling
• On – Fan runs continuous
• Circ – Fan runs a user selected minimum amount of
time each hour
The 824 has three Air Cleaner modes:
• Auto – Air cleaner operates only with a call for fan
operation
• Quick – Air cleaner will operate for 3-hours
• Allergy – Air cleaner will operate for 24-hours
32
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824 Programmable Wi-Fi Comfort Control
7.
Advanced Operation
7.1
Control Response Rate
7.2
Dehumidification
Allows the user to select a set of higher proportionalintegral control constants to increase the responsiveness
of the Control. Selecting “Fast” will cause the Control to
generate load value at a faster rate. Control Response rate
can be adjusted in Installer Setup>Comfort Settings.
The 824 utilizes the following methods for dehumidification:
• Air flow reduction (applies only to variable speed
blowers) – If BK is connected, the 824 can reduce
the system air flow by 30% anytime the indoor RH is
higher than the cooling RH target. Air flow reduction is
disallowed if the indoor temperature is more than 2°F
above the cooling setpoint. Dehumidification is factory
enabled in the Installer Setup>Comfort Settings.
All “Fan Off” delays are also defeated when
dehumidification is enabled and the indoor RH
exceeds the cooling RH target.
•
Overcooling (applies to variable speed and nonvariable speed blowers) - If overcooling is enabled,
the Control will allow a 0.1°F of overcooling for each
1% of RH error. A maximum amount of overcooling
can be configured for 1°, 2° or 3°F.
EXAMPLE OF OVERCOOLING
WITH MAXIMUM CONFIGURED AT 2°
•
TARGET
HUMIDITY
ACTUAL
HUMIDITY
PERCENT
OF RH
ERROR
DEGREES OF
OVERSHOOT
40%
40%
45%
5%
0.5° Overshoot
55%
15%
1.5° Overshoot
40%
65%
25%
2.0° Overshoot
40%
70%
30%
2.0° Overshoot
7.3
Dehumidifier Operation
7.4
Dual Fuel Operation
The 824 has the ability to control a Whole-House
Dehumidifier through the normally open dry AUX contacts
on the 824 Control Sub-base. Control options are:
• Stand Alone Operation – Dehumidifier can operate
independent from cooling operation as long as the
824 Control is in Cooling mode or Auto mode and the
last call was cooling.
If Stand Alone Operation is selected, the 824 Control
allows the user to select whether the indoor fan
operates with dehumidifier request.
• With Active Call for Cooling Only – Dehumidifier can
only operate during an active call for cooling.
All dehumidifier control options are located in the
Installer Setup>Accessories Settings.
The 824 can control a dual fuel system without the need of
an external dual fuel kit. An Outdoor Temperature Sensor
must be installed and enabled for Restricted Modes to be
available. The 824 Control options are:
•
Non Restricted Mode – The Control will determine
which mode of heat will operate to maintain comfort
based on the calculated system load value. With a load
value in compressor heating range the heat pump will
operate and if the load value climbs to auxiliary heat
range, the heat pump will cycle off and the auxiliary
heat source will cycle on. Once the load value falls
below the auxiliary heat range, the auxiliary heat will
cycle off, and the heat pump will cycle back on.
When the system is actively overcooling,
Dehumidification will be displayed on the 824 home
screen. The maximum amount of overcooling is
configured in Installer Setup>Comfort settings.
Smart Continuous Fan (applies to variable speed and
non-variable speed blowers) – If enabled, continuous
fan operation will be interrupted when indoor RH
exceeds desired cooling RH target. A humidity icon
will be displayed along with the fan icon to indicate
that continuous fan operation has been disabled due
to high humidity conditions. Smart Continuous Fan
will also interrupt the fan circulate mode when indoor
humidity exceeds the desired cooling RH. This feature
can be enabled in the Installer Settings>Comfort
Settings>Smart Continuous Fan settings.
11-HD13D1-10-EN
33
Installation Guide
•
Restricted Mode (compressor heat only) – Once
enabled an outdoor temperature lockout can be set
to disable compressor heating operation. When the
outdoor temperature falls below the compressor
heat lockout the system will operate on auxiliary
heat source only. At any temperature above the
compressor heat lockout the system will operate
the same as non-restricted mode, heat pump or
auxiliary heat would be allowed based on system
load value. Once the compressor heat is locked out,
the outdoor temperature must rise at least 4° above
the compressor heat lockout setting before allowing
compressor heat again.
Restrict Compressor
and Aux Heat
70º
65º
60º
55º
50º
45º
40º
35º
30º
Restrict Compressor
Heat Only
70º
65º
60º
55º
50º
45º
40º
35º
30º
Control Determines
Heat Source
Compressor Lockout
Aux Heat Only
Compressor
Lockout Set to 50º
•
34
Restricted Mode (compressor and auxiliary heat) –
Once enabled an outdoor temperature lockout can be
set to disable compressor heating below and disallow
auxiliary heat operation above. When the outdoor
temperature is above the auxiliary heat lockout,
only compressor heat is allowed. When the outdoor
temperature falls below the compressor heat lockout,
only auxiliary heat is allowed. When the outdoor
temperature is between the compressor heat lockout
and auxiliary heat lockout the system will operate the
same as non-restricted mode, heat pump or auxiliary
heat is allowed based on system load value. There is
a 10° minimum dead band between the compressor
heat lockout and auxiliary heat lockout. Once the
compressor heat or auxiliary heat is locked out,
the outdoor temperature must rise or fall at least 4°
above or below the lockout setting before allowing
compressor or auxiliary heat again.
Compressor Only
Comp or Aux Heat Allowed
Aux Heat Only
Minimum 10°
Deadband
Compressor
Lockout Set to 40º
Aux Heat
Lockout Set to 50º
AN OUTDOOR TEMPERATURE SENSOR MUST
BE ENABLED FOR LOCKOUT SETTINGS TO BE
AVAILABLE. Lockout options are located in the
Installer Setup>Lockout Settings.
7.5
Lockouts
The 824 has the following lockouts. AN OUTDOOR
TEMPERATURE SENSOR MUST BE ENABLED FOR
LOCKOUT SETTINGS TO BE AVAILABLE. Lockouts can
be enabled in Installer Setup>Lockout Settings.
• Auxiliary Heat Lockout – Once enabled, select an
outdoor temperature which disables auxiliary heat
anytime the outdoor temperature is above the selected
temperature. Compressor heat will be allowed.
• Compressor Lockout - Once enabled, select an
outdoor temperature which disables compressor
heat anytime the outdoor temperature is below the
selected temperature. Indoor heat will be allowed.
NOTE: If enabling Auxiliary Heat Lockout and
Compressor Heat Lockout there is a minimum 10°
dead band between the two settings.
• Defrost Heater Balance Point (W1) – Once enabled,
select an outdoor temperature which disables all
electric heat during defrost above the selected
temperature.
• Defrost Heater Balance Point (W2) – Once enabled,
select an outdoor temperature which disables 2nd
and 3rd stages of electric heat during defrost above
the selected temperature.
• Defrost Heater Balance Point (W3) – Once enabled,
select an outdoor temperature which disables 3rd
stage of electric heat during defrost above the
selected temperature.
• Compressor Cooling 1st Stage Lockout – Once
enabled, select an outdoor temperature which forces
2nd stage cooling operation.
• Compressor Heating 1st Stage Lockout – Once
enabled, select an outdoor temperature which forces
2nd stage compressor heating operation.
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824 Programmable Wi-Fi Comfort Control
•
7.6
Furnace Heating 1st Stage Lockout – Once enabled,
select an outdoor temperature which forces 2nd stage
furnace heating operation.
Humidifier Operation
The 824 has the ability to control a humidifier through the
normally open dry AUX Contacts on the Control Sub-base.
Humidification is only enabled while in heating mode of
operation. Control options are:
• RH Control – Dry contacts are closed anytime the
indoor humidity is less than the heating target relative
humidity.
• Frost Control – The 824 Control references the
outdoor temperature and structure integrity to offset
the heating target relative humidity. This helps to
limit the risk of frost or condensation from forming
on interior walls and windows. A scale of 1 to 10 is
provided based on the insulation properties and
expected leakage of the home (1=Leaky with poor
insulation, 10=Very Tight with good insulation). An
outdoor temperature sensor must be connected and
enabled for frost control to be available.
Frost Control Structure Integrity Scale
the outdoor temperature exceeds the minimum or maximum
outdoor temperature selections. If outdoor temperature
overrides are enabled the user can select to accumulate
the missed ventilation run time. Options are below:
•
Accumulate missed ventilation run time in 4
hour increments and make up when the outdoor
temperature is within the min/max settings.
• Accumulate missed ventilation run time in 24
hour increments and make up when the outdoor
temperature is within the min/max settings
• Accumulate missed ventilation run time in 4 hour
increments and make up at the end of 4 hour period.
• Accumulate missed ventilation run time in 24 hour
increments and make up at the end of 24 hour period.
All Ventilation control options are located in the
Installer Setup>Accessories Settings.
7.9
Warm Air Discharge
Enabling Warm Air Discharge with BK connected will
reduce the variable speed blower air flow by 20% when
in compressor heating operation. Warm Air Discharge
only applies to compressor heating and is disabled when
hydronic, fossil fuel or electric heat (including supplemental
heat) modes are activated. Warm Air Discharge can be
enabled in Installer Setup>Comfort Settings.
7.10 Wet Heat (Hydronic) Operation
Leaky, Poor Insulation Average
10
Good Insulation, Tight
The 824 Control can be setup to allow humidification
anytime in heating mode or only when actively heating.
The airflow during Humidifier-only is factory set to 100%
but can be adjusted between 35%-100% (this requires
a variable speed indoor blower with BK connected).
All humidifier control options are located in the
Installer Setup>Accessories Settings.
7.7
Recovery
The 824 control utilizes a Stage Inhibit to limit equipment
staging. This inhibit can be defeated in the following two
manners.
7.7.1 Aggressive Recovery
Disables stage inhibits in heating and cooling mode anytime
the setpoint is adjusted more than 2°F
7.7.2 Heating Aggressive Recovery
Disable stage inhibit in heating mode only when the outdoor
temperature falls below the selected outdoor temperature
7.8
A hot water coil can be applied to either a variable speed
or non-variable speed indoor unit. The hot water coil can
be the sole source of heat or used as auxiliary heat when
applied with a heat pump. When applied with a heat pump,
wet heat is considered auxiliary heat and will operate inconjunction with heat pump heat. Switching the system
mode to emergency heat would disable the heat pump and
cycle the wet heat only.
If applied with a variable speed air handler with BK
connected, the blower speed during wet heat only heating
will vary based on the system load value. The airflow will
range from 35% to 100% depending on the system load
value. When applied with a heat pump, the blower speed
during heat pump and wet heat operation will be the higher
of the two air flows. There are separate blower “On” and
“Off” delays for wet heat in the 824 Control.
The 824 Control is designed to operate forced air systems
and should not be applied to non-forced air systems (radiant
floors, radiators, etc…)
The hydronic heat blower delay options can be accessed
by navigating to Installer > Setup > Airflow Settings.
Ventilation Operation
The 824 has the ability to control a Ventilation system
through the normally open dry AUX Contacts on the 824
Control Sub-base. The blower is not interlocked on a call
for ventilation. The ventilation run time per hour can be
adjusted to meet ASHRAE 62.2 standards. A temperature
override can be set to prevent ventilation operation when
11-HD13D1-10-EN
35
Installation Guide
8.
Diagnostic Tools
8.1
Test Modes
Access Test Modes by navigating to Service Menu>Test Modes. All test modes will terminate automatically after 60 minutes
or can be terminated manually at any time.
MODE
SETTINGS
DESCRIPTION
Test Blower
50%, 100%
Energize indoor blower at the selected speed
Test Cool
Stage 1
Stage 2
Energize the selected stage of cooling operation. The indoor blower will also
operate at the speed required for the selected stage
Test Compressor Heat
Stage 1
Stage 2
Energize the selected stage of compressor heating operation. The indoor blower
will also operate at the speed required for the selected stage
Test Indoor Heat
Stage 1
Stage 2
Stage 3
Energize the selected stage of indoor heating operation. The blower operation
will be dependent on the indoor heat type:
Electric - blower energized during test mode but the blower speed is controlled
by the indoor unit
Fossil - blower is controlled independently by the indoor unit during test mode
Hydronic - blower is energized during test mode
Test Compressor and Indoor Heat
Stage 1 Indoor Heat
Stage 2 Indoor Heat
Stage 3 Indoor Heat
Energize all stages of compressor heat and selected stage of indoor electric
heat/hydronic heat. The blower is energized and runs at the higher of the
compressor heat air flow versus indoor heat air flow
More
AUX 1
AUX 2
Closes the normally open AUX contacts. The blower is not energized during this
test mode
8.2
Save Logs
8.3
Diagnostics
The 824 Control has the ability to log data on USB Flash
Drive. Attach a USB Flash Drive to the included USB
connector, plug it into the 824 Control and select Save
Logs from the Service Menu.
The amount of data logged will be dependent on the
number of days logged and the storage capability of the
USB Flash Drive. Access Save Logs by navigating to
Service Menu>Save Logs.
Within the Diagnostic screen are two items related to alerts:
• Current Alerts – Alerts which are currently active
• Alert History – Cleared Alerts (last 30 days)
NOTE: Each alert will have a date/timestamp of when the
alert was negated. The Date/Time stamp for Current Alerts
is when the alert was asserted. For Alert History the date/
timestamp is when the alert was negated.
From both screens the user can select an alert code and
get additional information on the alert as well as a list of
possible causes, similar to the Interactive Troubleshooting
Guide located on ComfortSite/ASDealernet
All alerts are categorized by severity:
• CRITICAL
— Loss of heating/cooling operation
— Service call is required
— Alert messages are displayed on the home screen
and when closed, a flashing red icon is used to
indicate alert condition.
• MAJOR
— Reduced functionality - minimum operation is possible
— Service call is not immediately required
36
— Alert messages are not displayed on the home screen
but a yellow icon is used to indicate alert condition.
NOTE: Critical and Major alerts can be displayed on the
home screen by pressing the alert icon on the shortcut tool
bar (top right of home screen).
• NORMAL
— Functionality may be lost but should recover or the
information is for diagnostic purposes / performance
monitoring
— Service call is not required
— Normal alerts are only displayed in the Diagnostic
screen
Diagnostics can be accessed by navigating to
Service Menu>Diagnostics.
8.4
History
History is accessed by navigating to Service Menu>History
The History screen allows the technician to view cycle count
and run time data for each mode and stage of operation.
This data provides a snap-shot into system operations.
Y1 COOLING
TODAY
LAST 7
DAYS
CURRENT
MONTH
LAST
MONTH
01/02
01/02
01/02
01/02
Y2 COOLING
Y1 HEATING
Y2 HEATING
W1
W2
W3
DEFROST CYCLES
Indicates cycle count
Indicates cycle time in minutes
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824 Programmable Wi-Fi Comfort Control
8.5
System Report
8.6
Restore Factory Defaults
The System Report Screen provides technicians with
important system operational data in one, concise screen.
The data is provided in real-time and updates as the data
changes.
The System Report Screen displays the following data
points:
— System Status - mode and stage of operation
— Load Value
— Fan Status
— Indoor Temperature
— Indoor Relative Humidity
— Heating and Cooling Setpoints
— Relative Humidity Setpoints
— Dehumidifier Status
— Outdoor Temperature
— Outdoor Relative Humidity (Nexia™ connection
required)
Currently Energized Terminals are displayed in green at the
bottom of the System Report screen.
This feature will delete all saved settings, both user and
installer, and restore the 824 to its factory default settings.
This also includes any Wi-Fi and Z-Wave device settings.
11-HD13D1-10-EN
37
Installation Guide
9.
Troubleshooting
SYMPTOM
POSSIBLE CAUSES
ACTION
Control displays an alert code on
the screen.
A critical or major alert is present.
Navigate to the Diagnostic screen on the 824 Control for a
Problem Description and Possible Cause.
Display will not come on
Loss of 24VAC between R & B at the Control.
1) Check R & B wiring.
2) Check transformer for 24VAC output.
3) Check for broken or shorted thermostat wire.
Indoor temperature display is
incorrect.
1) Indoor temperature display needs calibration.
2) Heat from touch screen is being trapped within
the thermostat body. See section 4.1 for mounting
location guidelines.
1) Calibrate temperature sensor from Sensor Settings or
use a remote temperature sensor
2) Move Control away from competing air stream or use a
remote indoor sensor.
Indoor humidity display is incorrect.
Indoor humidity display needs calibration.
Calibrate humidity sensor from the Sensor Settings.
Heating will not come on.
1) System mode is not set to Heat/Auto or setpoint
is set too low.
2) Minimum off time delay is being enforced.
3) Heating system may require service.
1) Set mode to heat and raise the setpoint above the room
temperature.
2) Wait for 5 minutes and recheck heating equipment.
3) Check/repair system.
Cooling will not come on.
1) System mode is not set to Cool/Auto or the
setpoint is too high.
2) Minimum off time delay is being enforced.
3) Cooling system may require service.
1) Set mode to cool and lower the setpoint below the room
temperature.
2) Wait for 5 minutes and recheck cooling equipment.
3) Check/repair system.
Heating or Cooling is displayed,
but no warm or cool air is coming
from the registers.
1) There is a fan delay as the heating or cooling
equipment turns on.
2) Equipment is not working properly.
1) Wait a minute for blower delays and recheck registers.
2) Check/repair system.
Fan runs all the time
1) Fan mode is set to On, Circulate or Clean mode
2) Field wiring issue
3) There is a failure in the indoor unit
1) Check Control settings to see if fan is set to On,
Circulate or Clean mode.
2) Check field wiring
3) Check indoor unit for failures (such as tripped heating
limit).
“+” symbol appears on Home
Screen beneath Indoor
Temperature readout
Both compressor heat and indoor heat are being
called simultaneously
No action required, symbol is for informational purposes
only
Fan is set to ON but not running.
1) Humidity Control is engaged.
2) Field wiring issue
3) Blower motor is not functioning.
1) If indoor humidity is higher than desired setpoint, the
blower will cycle off with the equipment. A humidity icon
will be displayed on the Fan Mode button when the blower
operation is being inhibited due to high humidity.
2) Check field wiring
3) Check/repair system.
Cooling or Heating cycles too
fast or too slow (narrow or wide
temperature swings).
1) Check the location of the Control for drafts.
2) Cycles per hour is improperly set.
1) Seal air leaks behind Control. Relocate Control or apply
remote indoor temperature sensor.
2) Adjust cycle rates in the Advanced Installer Setup.
Heat pump is not turning on; only
furnace or electric heat strips are
running.
1) Outdoor temperature is below compressor
lockout temperature setting.
2) System mode is set to Emergency Heat.
3) Outdoor Unit may require service.
1) Adjust the compressor lockout temperature setting if
desired.
2) Check/repair outdoor temperature sensor or wiring.
Cannot change system mode to
desired setting.
Equipment is not configured properly.
Check the standard installer set up screen to ensure
equipment is properly configured.
Screen does not respond properly
to a button press
1) Screen is out of calibration.
2) Internal Control fault
1) Remove Control from sub base and reset. Follow the
calibration instructions when the Control reboots.
2) Reset/Cycle power to Control by removing it from the
subbase, waiting 10 seconds and replacing.
38
11-HD13D1-10-EN
824 Programmable Wi-Fi Comfort Control
10. Notices
10.1 FCC Notice											
INFORMATION TO USER
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device
may not cause harmful interference and (2) This device must accept any interference received, including interference
that may cause undesired operation. The antenna(s) used for this transmitter must be installed to provide a separation
distance of at least 20 cm from all persons and must not be collocated or operating in conjunction with any other antenna
or transmitter.
This equipment has been tested and found to comply with the limits for Class B Digital Device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures.
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected
• Consult the dealer or an experienced radio/TV technician for help
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
10.2 IC Notice
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two
conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including
interference that may cause undesired operation of the device.The distance between user and products should be no
less than 20cm
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence.
L’exploitation est autorisée aux deux conditions suivantes : (1) l’appareil ne doit pas produire de brouillage, et (2) l’utilisateur
de l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le
fonctionnement.la distance entre l'utilisateur et les produits devraient être au moins 20 cm
11-HD13D1-10-EN
39
Installation Guide
The manufacturer has a policy of continuous product and
product data improvement and it reserves the right to
change design and specifications without notice.
Representative-only illustrations included in this document.
11/2017
40
11-HD13D1-10-EN

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