Honeywell Thermostat T7350 Users Manual 63 2605 Commercial Programmable

2015-01-23

: Honeywell Honeywell-Honeywell-Thermostat-T7350-Users-Manual-262218 honeywell-honeywell-thermostat-t7350-users-manual-262218 honeywell pdf

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Page Count: 40

Application
Features
Features (continued from page 1)
- Features Available via PDA Configuration
- Features via Optional Network Model-H
Specifications
Installation
Settings
Installer Setup
Programming
Operation
Troubleshooting Guide (Table 19)
Wiring Diagrams (Fig. 17-25)
Appendix - PDA Usage
- Hardware Requirements
- PDA Programming

PRODUCT DATA

Put Bar Code Here

63-2605—5

T7350 Commercial Programmable Thermostat

FOR SINGLE- OR MTG512ULTI-STAGE CONVENTIONAL/HEAT PUMP

SYSTEMS

APPLICATION

The T7350 Commercial Programmable Thermostat controls

24 Vac commercial single zone heating, ventilating and air

conditioning (HVAC) equipment. The T7350 consists of a

thermostat and subbase. The thermostat includes the keypad

and display for 7-day programming. The subbase includes

equipment control connections. The subbase mounts on the

wall and the thermostat mounts to the subbase.

FEATURES

• Typically used in buildings (including: restaurants,

shopping malls, office buildings and banks) under

55,000 square feet.

• For single zone rooftop units, split systems, heat

pumps or hot/chilled water systems.

• 7-day programming.

• Two Occupied and two Not Occupied periods per day.

• Thermostat Interface Module (TIM) connections to

thermostat from PDA for advanced configuration,

programming, keypad lockout, etc. changes can be

made with thermostat mounted.

• Individual heat and cool setpoints available for

Occupied and Not Occupied periods.

• P+I+D control minimizes temperature fluctuations.

• Recovery ramp control automatically optimizes

equipment start times based on building load.

• Convenient overrides allow temporary setpoint

changes.

• Keypad multi-level lockout available with all models.

• Remote sensor capability for temperature (including

outdoor air and discharge air) and humidity sensors.

• Auxiliary subbase contact typically interface with a

Honeywell Economizer System (for total rooftop

control integration) or act as dehumidification output.

• Universal Versaguard™ Thermostat guards available.

• T7350H provides networking capability on LonWorks®

Bus using a Free Topology Transceiver (FTT).

• T7350H Conforms to LonMark® Space Comfort Profile

for rooftop applications.

continued

Contents

Specifications ................................................................... 3

Installation ........................................................................ 6

Settings ............................................................................ 11

Installer Setup .................................................................. 12

Programming .................................................................... 15

Operation .......................................................................... 18

Troubleshooting Guide (Table 19) .................................... 23

Wiring Diagrams (Fig. 17-25) ........................................... 25

Appendix - PDA Usage .................................................... 30

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2548—5 2

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the

TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or

phone:

1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).

2. Honeywell Customer Care

1885 Douglas Drive North

Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.

International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,

Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

FEATURES (continued from page 1)

Features Available via PDA Configuration

• 365 day clock with holiday programming.

• Automatic Daylight Saving Time adjustments.

• Selectable dehumidification limit control.

• Modulating output configuration.

• Occupancy input to control standby setpoint.

• Additional standby period used in low traffic areas.

• Sequential start option.

• Discharge air high/low limits.

• Selectable recovery ramp.

• Ambient lockout (with outdoor sensor).

• System monitoring.

• Application database with download and storing.

Features via Optional Network Model-H

• Communications on LonTalk® network.

• Network Tools (LonSpec, CARE) have ability to

configure all PDA available features.

• T7350 Network data inputs including outdoor air

temperature, Occupancy Sensor, Electric Demand

Shed/Restore, room temperature and humidity.

• Use T7350H to time-schedule up to 119 network

connected XL10 + XL15c devices.

• Time synchronization with a network master clock or

the T7350H configured as the network master clock.

• Remote manual occupancy changes to the T7350 via

Command Display (S7760).

• View and modify weekly schedules and holidays via

Command Display (S7760).

• Remote changes to the T7350 occupancy override,

schedules, fan operation (on auto), system mode (off,

auto, heat, cool) and room temperature setpoints via

Workstation.

• Remote unoccupied bypass controlled from another

device.

• Remote T7350 data and alarm monitoring via

Command Display or Workstation.

• Network Manual Mode allows a remote user to turn on/

off or modulate each output via a network connection.

• LonMark plugin software to facilitate third party

configuration tools and workstations.

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

363-2605—5

SPECIFICATIONS

IMPORTANT

The specifications given in this publication do not

include normal manufacturing tolerances. Therefore,

this unit might not exactly match listed specifications.

This product is tested and calibrated under closely

controlled conditions; minor performance differences

can be expected if those conditions are changed.

Models: See Table 1.

Dimensions: See Fig. 1.

Finish (color): Trident White.

Batteries: No batteries required.

Table 1. T7350 Thermostat Features.

aAll models are down-selectable and can be configured to control fewer stages than the maximum allowed.

bOne extra stage (of either heat or cool) can be configured using the auxiliary relay.

cHeat pump applications for these models have a maximum of two heat stages and two cool stages.

Mounting Means:

Mounts on subbase.

Subbase Mounts On:

Wall: Using two 5/8 in. long #6-32 screws (included).

Outlet Box: Using sheet metal screws.

Throttling Range for Modulating Outputs:

Automatically adjusts based on heat/cool stages. Manually

adjustable with PDA.

Clock Accuracy (at 77° F [25° C]): ±1 min./month (30 days).

Minimum Stage Operation Time (fixed):

Minimum On

Heat: 1 minutes.

Cool: 3 minutes.

Minimum Off (Cool and Heat Pump): 1 minute.

Electrical Ratings:

Power: 24 Vac, 50/60 Hz.; 20 to 30 Vac, 50/60 Hz.

Input:

Temperature: 20K ohms.

Humidity: 0-10 Vdc.

Outdoor: 3000 PTC.

Discharge Air: 20K ohms.

Occupancy Sensor: Dry contact switching 30 Vdc at 1 mA.

All Relay Outputs (at 30 Vac):

Running: 1.5A maximum.

Inrush: 7.5A maximum.

Modulating Output: 4 to 20 mA with 510 ohm maximum

terminating resistance.

System Current Draw (without load):

5 VA maximum at 30 Vac, 50/60 Hz.

NOTE: Relays are N.O. Single-Pole, Single-Throw (SPST).

Outdoor Sensor Wiring: Requires 18 gauge wire.

Humidity Ratings: 5% to 90% RH, noncondensing.

Emergency Heat Indication:

Display indicates when Emergency Heat is activated (Em).

Temperature:

Ratings:

Operating Ambient: 30°F to 110°F (-1°C to 43°C).

Shipping: -30°F to +150°F (-34°C to +66°C).

Display Accuracy: ±1°F (±1°C).

Setpoint:

Range:

Heating: 40°F to 90°F (4°C to 32°C).

Cooling: 45°F to 99°F (7°C to 37°C).

Deadband: 2°F (1°C).

Default Settings: See Table 2.

Loss of Power: The thermostat maintains programmed times

and temperatures for the life of the product. Clock and day

information is retained for a minimum of 48 hours.

NOTE: To achieve the 48-hour power-loss clock retention,

the T7350 must be powered for at least 5 minutes.

Communicating Model T7350H:

Connection Terminals for the LonWorks Bus.

Network jack for quick access by personal computer based

tools.

Communications service-pin pushbutton to simplify startup.

LonMark Functional Profile: 8500_20 Space Comfort

Controller.

LonMark SCC Object Type: 8504 Rooftop See Fig. 2.

LonMark Program Identifier: 80:00:0C:55:04:03:04:2E.

LonMark Application Interoperability: version 3.3

Honeywell LonMark Plug-In file downloads:

http://plugin.ge51.honeywell.de/index.htm#

Model Applications

Maximum Stagesa

Features

Auxiliary

Relay

LONWORKS®

Capability?Heat Cool

T7350A Conventional

Heat Pump

1b1bYes No

T7350B 2b2bOutdoor, Discharge Air Capability Yes

T7350D 3 (2)c3 (4)cHumidity, Occupancy,

Outdoor, Discharge Air Capability

Yes

T7350H1009 Isolated

Normally

Open

Yes

T7350H1017 Modulating 2 modulating, 2b relay Humidity, Occupancy,

Outdoor, Discharge Air Capability,

4-20 mA output (2-10 Vdc with 500 ohm resistor)

Yes

T7350M Yes No

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 4

PDA System Requirements:

Palm OS®: 3.5.x to 5.2.1

Dynamic Heap: 256K bytes.

Free RAM Space: 1000K bytes.

Serial Communications: RS-232.

Approvals:

European Community Mark (CE) Listed.

UL 873 Recognized, NEC Class 2.

FCC Part 15 subpart J Class A.

cUL.

Table 2. Default Setpoints.

Fig. 1. Thermostat and subbase dimensions in inches

(mm).

Accessories:

Duct Discharge Air Sensors:

C7041B (6 or 12 in. [152 or 305 mm]),

C7041C (18 in. [457 mm]),

C7041J (12 ft. [3.66 m] averaging),

C7770A (8 in. [203 mm] probe).

Outdoor Air Sensors: C7089A, C7170A,

C7031G2014 (weatherproof).

Temperature Sensors (Remote): C7772A, T7770A1006,

T7770B1046, T7770C1044, T7770D1000, T7771.

Economizer Logic Modules: W6210, W6215, W7210, W7212,

W7215, W7459.

Humidity Sensors: H7625, H7635.

PDA Units: Palm® V, M125, and i705 handhelds;

TRGPro handheld; ZIRE™ 71 handheld;

TUNGSTEN™ T handheld.

Others:

209541B FTT network termination module.

209651A Vertical Mounting Hardware Wallplate Adapter

(Trident white).

50000083-001 Thermostat Interface Module (TIM).

50014064-001 Infra-Red TIM.

50000452-001 Troubleshooting Cable.

AK3797 Single pair network cable plenum rated,

U.L. Type CMP.

AK3798 Single pair network cable, U.L. Type CMR.

AK3799 Double pair network cable plenum rated,

U.L. Type CMP.

Q7740A FTT network 2-way repeater.

Q7740B FTT network 4-way repeater.

TG512 Universal Versaguard™ Thermostat guards.

Control Occupied

Not

Occupied Standby

Heating 70° F (21° C) 55° F (13° C) 67° F (19° C)

Cooling 75° F (24° C) 85° F (29° C) 78° F (26° C)

6-3/4 (171)

2-3/16 (56)

1-9/16

(40)

4-1/2

(114)

2-1/32

(52)

2-1/32

(52)

4-1/16

(104)

1-5/8

(42)

2-3/8 (60)

3-1/4 (83)

6-9/16 (166) M22432

1-5/8

(42)

SUBBASE

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

563-2605—5

Fig. 2. T7350H LonMark Space Comfort Controller Rooftop Object (8504) with Node Object.

nv28

nv26 nvoSpaceTemp

SNVT_ temp_p

nv27 nvoUnitStatus

SNVT_hvac_status

nvoEffectSetpt

SNVT_temp_p

Hardware OutputHardware Output

Hardware Input

SCC-Rooftop

Object Number 8504.

Mandatory

Network

Variables

Manufacturer

Defined

Section

Optional

Network

Variables

Configuration Properties

nv45 nvoOutdoorTemp

SNVT_temp_p

nv29 nvoEffectOccup

SNVT_occupancy

nv30 nvoHeatCool

SNVT_hvac_mode

nv34 nvoDischAirTemp

SNVT_temp_p

nv37 nvoTerminalLoad

SNVT_lev_percent

nv43 nvoSpaceRH

SNVT_lev_percent

nv7 nviOccSensor

SNVT_occupancy

nv2 nviSetpoint

SNVT_ temp_p

nv6 nviOccManCmd

SNVT_occupancy

nv5 nviOccSchedule

SNVT_tod_event

nviSpaceTemp

SNVT_temp_p

nv1

nv8 nviApplicMode

SNVT_hvacMode

nv19 nviOutdoorTemp

SNVT_Temp_p

nv20 nviSpaceRH

SNVT_lev_percent

nv43 nvoBypass

SNVT_switch

nv44 nvoOccSchedule

SNVT_tod_event

nv45 nvoOccSensor

SNVT_occupancy

nv46 nvoData1

UNVT_data1

nv47 nvoData2

UNVT_data2

nv30 nviBypass

SNVT_switch

nv31 nviFanAuto

SNVT_switch

nv32 nviManValue

UNVT_manValue

nv34 nviDlcShed

UNVT_dlcShed

M22431

SNVT_time_sec

SNVT_temp_setpt

SNVT_time_min

UCPTconfig

UCPTconfigPts

UCPTdaylightSav

UCPTschedule0

UCPTschedule1

UCPTschedule2

UCPTschedule3

UCPTschedule4

UCPTschedule5

UCPTschedule6

UCPTschedule7

UCPTholSched

(mandatory)

(optional)

(mandatory)

(optional)

(manf specific)

nc1 - nciSndHrtBt

nc4 - nciRevHrtBt

nc2 - nciSetpoints

nc6 - nciBypassTime

nciConfig

nciConfigPts

nciDayLghtSav

nciDaySchedule0

nciDaySchedule1

nciDaySchedule2

nciDaySchedule3

nciDaySchedule4

nciDaySchedule5

nciDaySchedule6

nciDaySchedule7

nciHolSched

nv6

nv2 nvoStatus

SNVT_ obj_status

nvoFileStat

SNVT_file_status

Node

Object

Mandatory

Network

Variables

Manufacturer

Defined

Section

Optional

Network

Variables

Configuration Properties

nv3 nviTimeSet

SNVT_ time_stamp

nv7 nviFilePos

SNVT_file_pos

nv5 nviFileReq

SNVT_file_req

nviRequest

SNVT_obj_request

nv1

nv11 nroT7350Ver

UNVT_version

nv12 nroPgmVer

UNVT_pgmId

nv13 nvoPgm

UNVT_pgmOut

nv14 nvoTime

SNVT_time_stamp

nv15 nvoAlarmH

UNVT_alarm

nv16 nvoAlarmStatus

UNVT_alarmStatus

nv17 nvoAlarmLog

UNVT_alarmLog

nv18 nvoError

UNVT_error

nv9 nviInUse

UNVT_inUse

nv10 nviPgm

UNVT_pgmIn

UCPTdevName

UCPTapplVer

(manf specific)

nc1 - nciDeviceName

nc2 - nciApplVer

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 6

INSTALLATION

When Installing this Product...

1. Read these instructions carefully. Failure to follow them

could damage the product or cause a hazardous

condition.

2. Check ratings given in instructions and on the product to

ensure the product is suitable for your application.

3. Installer must be a trained, experienced service

technician.

4. After installation is complete, check out product

operation as provided in these instructions.

CAUTION

Electrical Shock or Equipment Damage Hazard.

Can shock individuals or short equipment

circuitry.

Disconnect power supply before installation.

IMPORTANT

All wiring must agree with applicable codes,

ordinances and regulations.

MERCURY NOTICE

If this control is replacing a control that contains

mercury in a sealed tube, do not place your old

control in the trash. Dispose of properly.

Contact your local waste management authority for

instructions regarding recycling and the proper

disposal of an old control. If you have questions, call

Honeywell Customer Care Center at 1-800-468-1502.

Location

Do not install the thermostat where it can be affected by:

— drafts, or dead spots behind doors and in corners.

— hot or cold air from ducts.

— radiant heat from sun or appliances.

— concealed pipes and chimneys.

— unheated (uncooled) areas such as an outside wall behind

the thermostat.

Subbase

WHEN USED TO SENSE ROOM TEMPERATURE

Install the thermostat about 5 ft (1.5m) above the floor in an

area with good air circulation at average temperature. (See

Fig. 3.)

WHEN NOT USED TO SENSE ROOM TEMPERATURE

When using the remote-mounted temperature (and humidity)

sensor(s) to sense ambient conditions, install the thermostat

in an area that is accessible for setting and adjusting the

temperature and settings.

CAUTION

Equipment Damage Hazard.

Can damage the TIM connection beyond repair.

Disconnect the TIM cable prior to opening or closing

the thermostat cover.

NOTE: Allow sufficient clearance below the thermostat to

plug in the TIM cable.

Install the remote-mounted sensor(s) about 5 ft (1.5m) above

the floor in an area with good air circulation at average

temperature. (See Fig. 3.)

If multiple remote sensors are required, they must be

arranged in a temperature averaging network consisting of

four or nine sensors. (See Fig. 4 and 6.)

NOTE: Only T7770 models with neither setpoint adjustment

nor bypass can be used for temperature averaging.

Fig. 3. Typical location of thermostat

or remote-mounted sensor.

IMPORTANT

To avoid electrical interference, which can cause

erratic performances, keep wiring runs as short as

possible and do not run thermostat wires adjacent to

the line voltage electrical distribution systems. Use

shielded cable (Belden type 8762 or equivalent for

2-wire). The cable shield must be grounded only at

the controlled equipment case.

Mounting Subbase

The subbase mounts horizontally or vertically.

IMPORTANT

• When using the internal temperature sensor, the

device must be mounted horizontally (with the LCD

facing upwards). Precise leveling is not needed.

• When using remote sensors, thermostat mounting

orientation does not matter.

Wall mounting (using standard drywall screws) is standard.

Mounting to a 2 in.(50.8 mm) by 4 in. (101.6 mm) wiring box

can be accomplished:

— for a horizontal box, no extra hardware is required.

5 FEET

(1.5 METERS)

YES NO

NO NO

M4823A

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

763-2605—5

— for a vertical box, part 209651A is required.

— Mount to European standard wall box (having 60.3 mm

[2.4 in.] between mounting screws in a horizontal line) with

or without adaptive hardware.

1. Position and level the subbase.

NOTE: A level wallplate is only for appearance. The

thermostat functions properly when not level.

2. Use a pencil to mark the mounting holes. (See Fig. 7.)

3. Remove the subbase from the wall and drill two 3/16 in.

(4.76 mm) holes in the wall (if drywall) as marked. For

firmer material such as plaster or wood, drill two 7/32 in.

(5.56 mm) holes.

4. Gently tap anchors (provided) into the drilled holes until

flush with the wall.

5. Position the subbase over the holes, pulling wires

through the wiring opening.

6. Loosely insert the mounting screws into the holes.

7. Tighten mounting screws.

Fig. 4. Four T7770A Sensors providing a temperature

averaging network for T7350 Thermostat.

Fig. 5. Two T7770A3002 Sensors providing a temperature

averaging network for T7350 Thermostat.

Fig. 6. Nine T7770A Sensors providing a temperature

averaging network for T7350 Thermostat.

Fig. 7. Mounting the subbase.

M19606A

T4 T3

SUBBASE

T7770A

M22408

T4 T3

T7350 SUBBASE

T7770A3002

T4 T3

T7770A3002

T4 T3

THE T7771A3002 IS A 10K OHM SENSOR.

M19607A

T T

T7770A

T77770A

T4 T3

SUBBASE

WIRES THROUGH WALL

WALL

ANCHORS

(2)

M19608

MOUNTING

HOLES

MOUNTING

SCREWS

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 8

Wiring

CAUTION

Electrical Shock or Equipment Damage Hazard.

Can shock individuals or short equipment

circuitry.

Disconnect power supply before installation.

IMPORTANT

All wiring must comply with local electrical codes

and ordinances.

NOTE: Maximum (and recommended) wire size is

18-gauge (ø 1.02 mm). Do not use wire smaller than

22-gauge (ø 0.644 mm).

Follow equipment manufacturer wiring instructions when

available. Refer to the Wiring Diagram section for typical

hookups. A letter code is located near each terminal for

identification. Refer to Tables 3 through 8 for terminal

designations.

1. Loosen subbase terminal screws and connect system

wires.

2. Securely tighten each terminal screw.

3. Push excess wire back into the hole in the wall.

4. Plug the hole with nonflammable insulation to prevent

drafts from affecting the thermostat.

Table 3. T7350A Subbase for Single-stage Heat,

Single-stage Cool Systems.

aFactory jumper between RC and RH for systems with one

transformer.

bFor changeover functional details, see Operation section.

Table 4. T7350B Subbase for Two-stage Heat,

Two-stage Cool Systems.

aFactory jumper between RC and RH for systems with one

transformer.

bFor changeover functional details, see Operation section.

Terminal

Description

Conventional

Heat Pump

RCaRCa24 VAC Cooling transformer.

RHaRHa24 VAC Heating transformer.

X X Common.

GGFan relay.

aux aux Conventional: Auxiliary relay or 2nd Stage of

heating or cooling relay.

Heat Pump: Auxiliary relay or 1st Stage auxiliary

heat relay.

W1 O/B Conventional: Stage 1 heating relay.

Heat Pump: Changeover relay for heating (B) or

cooling (O)b.

Y1 Y1 Conventional: Stage 1 cooling relay.

Heat Pump: Stage 1 compressor relay.

Terminal

Description

Conventional

Heat Pump

RCaRCa24 VAC Cooling transformer.

RHaRHa24 VAC Heating transformer.

X X Common.

aux aux Conventional: Auxiliary relay or 3rd stage of

heating or cooling.

Heat Pump: Auxiliary relay or 2nd stage auxiliary.

W1 O/B Conventional: Stage 1 heating relay.

Heat Pump: Changeover relay for heating (B) or

cooling (O)b.

W2 W1 Conventional: Stage 2 heating relay.

Heat Pump: 1st Stage auxiliary heat relay.

Y1 Y1 Conventional: Stage 1 cooling relay.

Heat Pump: Stage 1 compressor relay.

Y2 Y2 Conventional: Stage 2 cooling relay.

Heat Pump: Stage 2 compressor relay.

AS AS Discharge Air Sensor connection (1).

AS AS Discharge Air Sensor connection (2).

OS OS Outdoor Air Sensor connection (1).

OS OS Outdoor Air Sensor connection (2).

GGFan relay.

T3 T3 T7770 Remote Sensor connection (3).

T4 T4 T7770 Remote Sensor connection (4).

T5 T5 T7770 Remote Sensor connection (5).

T6 T6 T7770 Remote Sensor connection (6).

T7 T7 T7770 Remote Sensor connection (7).

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

963-2605—5

Table 5. T7350D Subbase for Three-stage Heat,

Three-stage Cool Systems.

aFactory jumper between RC and RH for systems with one

transformer.

bFor changeover functional details, see Operation section.

Table 6. T7350H Subbase for Three-stage Heat, Three-

stage Cool Systems with Network Communications

aFactory jumper between RC and RH for systems with one

transformer.

bFloating auxiliary contact (not connected to transformer hot

or common).

cFor changeover functional details, see Operation section.

Terminal

Description

Conventional

Heat Pump

RCaRCa24 VAC Cooling transformer.

RHaRHa24 VAC Heating transformer.

X X Common.

aux aux Auxiliary relay.

W1 O/B Conventional: Stage 1 heating relay.

Heat Pump: Changeover relay for heating (B) or

cooling (O)b.

W2 W1 Conventional: Stage 2 heating relay.

Heat Pump: 1st Stage auxiliary heat relay.

Y1 Y1 Conventional: Stage 1 cooling relay.

Heat Pump: Stage 1 compressor relay.

Y2 Y2 Conventional: Stage 2 cooling relay.

Heat Pump: Stage 2 compressor relay.

AS AS Discharge Air Sensor connection (1).

AS AS Discharge Air Sensor connection (2).

OS OS Outdoor Air Sensor connection (1).

OS OS Outdoor Air Sensor connection (2).

GGFan relay.

T3 T3 T7770 Remote Sensor connection (3).

T4 T4 T7770 Remote Sensor connection (4).

T5 T5 T7770 Remote Sensor connection (5).

T6 T6 T7770 Remote Sensor connection (6).

T7 T7 T7770 Remote Sensor connection (7).

W3 W2 Conventional: Stage 3 heat or stage 4 cool relay.

Heat Pump: 2nd Stage auxiliary heat relay.

Y3 — Conventional: Stage 3 cooling relay.

HS HS Humidity Sensor connection (signal: 0-10 Vdc).

HC HC Humidity Sensor connection (common).

HP HP Humidity Sensor connection (power).

M M Motion Sensor connection (1).

M M Motion Sensor connection (2).

Terminal

Description

Conventional

Heat Pump

RCaRCa24 VAC Cooling transformer.

RHaRHa24 VAC Heating transformer.

XXCommon.

auxbauxbAuxiliary relay connection (normally open).

auxbauxbAuxiliary relay connection (common).

W1 O/B Conventional: Stage 1 heating relay.

Heat Pump: Changeover relay for heating (B) or

cooling (O)c.

W2 W1 Conventional: Stage 2 heating relay.

Heat Pump: 1st Stage auxiliary heat relay.

Y1 Y1 Conventional: Stage 1 cooling relay.

Heat Pump: Stage 1 compressor relay.

Y2 Y2 Conventional: Stage 2 cooling relay.

Heat Pump: Stage 2 compressor relay.

AS AS Discharge Air Sensor connection (1).

AS AS Discharge Air Sensor connection (2).

OS OS Outdoor Air Sensor connection (1).

OS OS Outdoor Air Sensor connection (2).

G G Fan relay.

T3 T3 T7770 Remote Sensor connection (3).

T4 T4 T7770 Remote Sensor connection (4).

T5 T5 T7770 Remote Sensor connection (5).

T6 T6 T7770 Remote Sensor connection (6).

T7 T7 T7770 Remote Sensor connection (7).

W3 W2 Conventional: Stage 3 heat or stage 4 cool relay.

Heat Pump: 2nd Stage auxiliary heat relay.

Y3 — Conventional: Stage 3 cooling relay.

HS HS Humidity Sensor connection (signal: 0-10 Vdc).

HC HC Humidity Sensor connection (common).

HP HP Humidity Sensor connection (power).

M M Motion Sensor connection (1).

M M Motion Sensor connection (2).

ebus ebus LonWorks Bus (1).

ebus ebus LonWorks Bus (2).

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 10

Table 7. T7350H Subbase for Modulating Systems with

Network Communications.

aFactory jumper between RC and RH for systems with one

transformer.

bFloating auxiliary contact (not connected to transformer hot

or common).

Table 8. T7350M Subbase for Modulating Systems.

aFactory jumper between RC and RH for systems with one

transformer.

Mounting Thermostat on Subbase (Fig. 8)

With the subbase installed, mount the thermostat:

1. Engage the tabs at the top of the thermostat and

subbase.

2. Swing the thermostat down.

3. Press the lower edge of the case to latch.

NOTE: To remove the thermostat from the wall, first

pull out at the bottom of the thermostat; then

remove the top.

Terminal

Description

Conventional

Heat Pump

RCa— 24 VAC Cooling transformer.

RHa— 24 VAC Heating transformer.

X—Common.

auxbauxbAuxiliary relay connection (normally open).

auxbauxbAuxiliary relay connection (common).

W1 — Stage 1 heating relay.

Y1 — Stage 1 cooling relay.

MX — Modulating common.

MH — Modulating heating signal (4-20 mA).

MC — Modulating cooling signal (4-20 mA).

AS — Discharge Air Sensor connection (1).

AS — Discharge Air Sensor connection (2).

OS — Outdoor Air Sensor connection (1).

OS — Outdoor Air Sensor connection (2).

G—Fan relay.

T3 — T7770 Remote Sensor connection (3).

T4 — T7770 Remote Sensor connection (4).

T5 — T7770 Remote Sensor connection (5).

T6 — T7770 Remote Sensor connection (6).

T7 — T7770 Remote Sensor connection (7).

HS — Humidity Sensor connection (signal: 0-10 Vdc).

HC — Humidity Sensor connection (common).

HP — Humidity Sensor connection (power).

M — Motion Sensor connection (1).

M — Motion Sensor connection (2).

ebus ebus LonWorks Bus (1).

ebus ebus LonWorks Bus (2).

Terminal

Description

Conventional

Heat Pump

RCa— 24 VAC Cooling transformer.

RHa— 24 VAC Heating transformer.

X — Common.

aux — Auxiliary relay or 2nd stage of heating or cooling.

W1 — Stage 1 heating relay.

Y1 — Stage 1 cooling relay.

MX — Modulating common.

MH — Modulating heating signal (4-20 mA).

MC — Modulating cooling signal (4-20 mA).

AS — Discharge Air Sensor connection (1).

AS — Discharge Air Sensor connection (2).

OS — Outdoor Air Sensor connection (1).

OS — Outdoor Air Sensor connection (2).

G—Fan relay.

T3 — T7770 Remote Sensor connection (3).

T4 — T7770 Remote Sensor connection (4).

T5 — T7770 Remote Sensor connection (5).

T6 — T7770 Remote Sensor connection (6).

T7 — T7770 Remote Sensor connection (7).

HS — Humidity Sensor connection (signal: 0-10 Vdc).

HC — Humidity Sensor connection (common).

HP — Humidity Sensor connection (power).

M — Motion Sensor connection (1).

M — Motion Sensor connection (2).

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

11 63-2605—5

Fig. 8. Mounting thermostat on subbase.

SETTINGS

Using Thermostat Keys

The thermostat keys are used to:

• set current time and day,

• program times and setpoints for heating and cooling,

• override the program temperatures,

• display present setting,

• set system and fan operation,

• perform simple configuration.

NOTE: See Fig. 9 for keypad information.

Setting Temperature

Refer to Table 2 for the default temperature setpoints. See

Programming section for complete instructions on changing

the setpoints.

Setting System and Fan

System default setting is Auto. Fan default setting is On.

NOTE: Use System and Fan keys to change settings.

System Settings

— Auto: Thermostat automatically changes between heating

and cooling based on indoor temperature.

— Cool: Thermostat controls only cooling.

— Off: Heating, cooling, and fan are all off.

— Heat: Thermostat controls only heating.

— Em Heat: Auxiliary heat serves as first stage. Compressor

stages are locked off.

Fan Settings

— On: See Table 9.

— Auto: Fan always cycles with call for heating or cooling.

— Conventional: The equipment (i.e. plenum switch)

controls fan operation in heat mode. The thermostat

controls fan operation in cool mode.

— Electric Heat: The thermostat controls fan operation

in both heat and cool modes.

NOTE: Fan operation can extend (delay Off) after the

heating/cooling turns off:

— Heating choices are 0 or 90 seconds.

— Cooling choices are 0 or 40 seconds.

Table 9. Fan On Control Logic.

aIn heat mode, when set for conventional heat, the equip-

ment (i.e. plenum switch) could power the fan despite the

T7350.

Fig. 9. Thermostat key locations.

M19609

B. PRESS LOWER EDGE OF CASE TO LATCH.

A. ENGAGE TABS AT TOP OF THERMOSTAT AND SUBBASE OR WALLPLATE.

Occupancy Call for Heat/Cool

Scheduled Sensor Signal Yes No

Occupied Occupied On On

Occupied Standby On Off a

Standby — On On

Not Occupied — On Off a

System Fan Run

Schedule

CopyNot OccupiedOccupiedDay

Clear

Start Time

Day Time

Temperature

Temporary

Occupied

Override

HEAT HEATCOOL COOL

HEAT COOL ON AUTO

Schedule

Set Day/Time

Occupied

Not Occupied

Temporary

Not Occupied

M19610

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 12

INSTALLER SETUP

For most applications, the thermostat factory settings do not

need to be changed. Review the factory settings in Table 10.

NOTE: When power is first applied to the thermostat, the

display will show all segments (see Fig. 10).

Table 10. Keypad Configurable Installer Setup Optionsa.

aWith the exception of Temporary Not Occupied, functions not keypad configurable require a Palm OS Configuration Tool.

bLockouts do not allow adjustments on dehumidification high limit. Special keypresses are never locked out.

cDisplays only when heat pump is selected.

dValues vary depending on the model.

Fig. 10. LCD display of all segments.

Setup Using Keypad

The installer uses the Installer Setup to customize the

thermostat to specific systems. (See Table 10.) The table

includes all the configuration options available. For basic

setup functions, the thermostat can be configured using the

keypad.

NOTE: The T7350 has serial communications to facilitate

use of an installer configuration tool. More advanced

features are available using this tool. (See the

Appendix for details.)

A combination of key presses are required to use the Installer

Setup feature:

1. To enter the Installer Setup, press and hold both the

Run Schedule and the Copy keys until DEG F (or

DEG C) displays.

2. To advance to the next Setup item, press .

NOTE: Pressing Run/Copy again while in this mode

displays the T7350 firmware version number.

3. To return to a Setup item, cycle through the options.

4. To change a setting, use the up S or down T key.

5. To exit the Installer Setup, press Run Schedule.

6. The display prompts SAV CFG (save configuration).

a. If you want to save the new configuration, use the

up S or down T key to change NO to YES before

pressing Run Schedule.

b. If you want the configuration to remain as it was

before starting this change, ensure the display

indicates SAV CFG NO and press Run Schedule.

NOTE: Installer Setup is automatically exited after five

minutes with no key pressed. Upon this auto-

matic exit, all changes are lost.

Setting Keypad Lockout

Proper keypad sequences activate the lockout features. To

change the keypad lockout state:

1. Enter the Installer Setup: press and hold both the Run

Schedule and the Copy keys until DEG F (or DEG C)

displays.

2. Press until KYLCK displays.

3. Use the up S or down T key to change the setting.

Options are:

• 0: No lockout.

• 1: Lockout all keys except Temporary Occupied,

Temporary Not Occupied, up S, down T and .

• 2: Lockout all keys except .

NOTES:

— Options 1 and 2 do not allow adjustments on

dehumidification high limit.

Configuration Option Factory Default Description

Degree temperature display DEG F Temperature display: °F or °C

Remote room temperature sensor LOC SEN LOC: Use Local temperature sensor.

REM: Use Remote temperature sensor.

Clock format 12HRCLK 12HR: 12-hour clock format

24HR: 24-hour clock format

Keypad lockout level KYLCK 0 Keypad lockout enable/disable through special keypad sequence.

0: No lockout.

1: Lockout all keys except Temporary Occupied, Temporary Not Occupied, S, T and b.

2: Lockout all keys except b.

Conventional / heat pump selection CONV CONV: Conventional equipment.

HT PUMP: Heat Pump.

Heat Pump Reversing ValvecRVON HT RVON HT: Heat pump, energize O/B on call for heat.

RVON CL: Heat pump, energize O/B on call for cool.

Configuration Variables

(C1,C2,C3,C4,C5,C6,C7,C8)

dHexadecimal configuration code values.

The code defines only Installer Configuration.

It sets neither Parameters (gains and setpoints) nor Schedules.

Temporary Standby

StartTime

M19611

Not Occupied12

System

EmHeat Off CoolAuto

MonTueWedThuFri

SatSunHol

Dehumid OnAuto

MinsDays

Room

Fan

Set ScheduleSet

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

13 63-2605—5

— No options lockout special keypresses. See

the Special Functions section for details.

4. Once the proper option is chosen, exit Installer Setup by

pressing Run Schedule.

5. The display prompts SAV CFG (save configuration). If

you want to save it, use the up S or down T key to

change NO to YES before pressing Run Schedule

again.

Configuration

CAUTION

Possible Equipment Damage.

Fan must be running when system is operating.

Heat pump and electric heat systems must be

configured correctly to prevent equipment damage

caused by the system running without the fan.

Limited configuration can be done with the keypad. In order to

determine the proper codes to use for the Configuration

Variables (CnfgID), a PDA is required:

1. Open the PDA Config Tool Application.

2. Select the desired configuration.

3. On the summary screen, tap CnfgID.

4. The PDA determines the proper CnfgID.

5. Make note of the values.

6. Press both Copy and Run Schedule.

7. Tap until C1 appears on the right end of the display.

8. Adjust each variable to match the PDA indication:

a. Hold down the up S or down T key to adjust the

value quickly.

b. Tap the up S or down T key for fine control.

9. Press to switch to another variable.

10. Return to step 8 and repeat the process until all digits

are set properly.

11. To exit the Installer Setup, press Run Schedule.

12. The display prompts SAV CFG (save configuration).

a. If you want to save the new configuration, use the

up S or down T key to change NO to YES before

pressing Run Schedule.

b. If you want the configuration to remain as it was

before starting this change, ensure the display

indicates SAV CFG NO and press Run Schedule.

IMPORTANT

1. Review the settings to confirm that they are correct

for the system.

2. Press Run Schedule to exit the Installer Setup.

3. The thermostat prompts you to save configuration

changes. Default is NO.

4. Be sure to set the current day and time immediately.

Special Functions

Restore Factory Configuration (Run/Clear)

IMPORTANT

This operation erases the current configuration and

restores the factory defaults for all configuration,

parameters, setpoints and schedules. To regain the

old requires device reconfiguration.

1. Press both Run Schedule and Clear Start Time.

2. The display gives the option to restore the FAC CFG.

a. To restore the factory defaults, press up S or

down T until the display indicates YES.

b. To cancel this option, ensure display indicates NO.

3. Press Run Schedule.

Get Factory Schedule (Info/Clear)

Performing this operation reverts the schedules to the factory

defaults:

1. Press both Info and Clear Start Time.

2. The display gives the option to restore the FAC SCH.

a. To restore the factory schedule, press up S or

down T until the display indicates YES.

b. To cancel this option, ensure display indicates NO.

3. Press Run Schedule.

Test Mode (Occupied/Not Occupied/Schedule Day)

CAUTION

Possible Equipment Damage.

Equipment damage can result if compressor is

cycled too quickly.

The minimum off time for compressors is bypassed

during Test Mode. Equipment damage can occur if the

compressor is cycled too quickly.

Use the Test Mode to check the thermostat configurations and

operation. To start the system test:

1. Press Schedule Day, Occupied and Not Occupied

simultaneously.

2. The display gives the option to TEST.

a. To enter test mode, press up S or down T until the

display indicates IN TEST.

b. To cancel this option, ensure the display indicates

NO TEST.

3. Press Run Schedule.

NOTES:

— To verify whether or not the system test is still

active, repeat the above process.

— The system test times out after ten minutes with

no key pressed.

Save User Schedule (Info/Copy)

Performing this operation saves the current schedule

(including holidays) to memory, overwriting the old saved

schedule:

1. Press both Info and Copy.

2. The display gives the option to SAV SHD.

a. To save the current schedule, press up S or down

T until the display indicates YES.

b. To cancel this option, ensure display indicates NO.

3. Press Run Schedule.

Get User Schedule (Info/Run)

Getting the user schedule restores the schedule (including

holidays) from saved memory, overwriting the schedule

currently in use:

1. Press both Run Schedule and Info.

2. The display gives the option to GET SHD.

a. To retrieve the saved schedule, press up S or

down T until the display indicates YES.

b. To cancel this option, ensure display indicates NO.

3. Press Run Schedule.

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 14

Table 11. T7350 Key Function Summary.

aFan On: Continuous fan operation (occupied and standby). During not occupied periods, fan cycles with call for heat or cool.

Fan Auto: Fan cycles with call for heat or cool during all periods. (See Fan Settings section for more details.)

NOTE: The display returns to the default screen after pressing Run Schedule (or after a period of time without keypress):

— ten seconds: when returning from temporary setpoint changes, info screen, temp occ, and temp not occ.

— one minute: when returning from setting clock/day.

— ten minutes: when returning from System Checkout.

— five minutes: when returning from all other modes.

Grouping Button Definition

Information Down Arrow Lowers setpoint, day, or time. When setting times or temperatures, hold key down to

continuously decrease value. Also can make temporary change in temperature setpoint.

Information Obtains information (where humidity “high-limit” can be set), cycles through setup options.

Up Arrow Raises setpoint, day, or time. When setting times or temperatures, hold key down to

continuously increase value. Also can make temporary change in temperature setpoint.

Temperature Occupied

Heat

Sets Occupied Heat setpoint.

Occupied

Cool

Sets Occupied Cool setpoint.

Not

Occupied

Heat

Sets Not Occupied Heat setpoint.

Not

Occupied

Cool

Sets Not Occupied Cool setpoint.

Set Day Sets day of week. Tapping key with 'Set Value' segment on increases current day (same

effect as Up Arrow key).

Time Sets time.

Tapping key with “Set Value” segment on increases time in one hour increments.

Override Temporary

Occupied

Temporary occupied setting for length of time defined by installer.

User can modify setpoints.

Temporary Not

Occupied

Sets holiday length.

User selects number of days (“0”-”99”), or “---” for continuous override.

Schedule Day Selects day schedule to modify. (Used also with copy key.)

Occupied Selects occupied event start times for specified day.

Repeatedly press this key to toggle between two occupied events.

Not Occupied Selects not occupied event start times for specified day.

Repeatedly press this key to toggle between two not occupied events.

Clear

Start Time

Clears start time for specified period and day.

Copy Copies schedule from one day to another.

System Selects System Mode. Toggles through Em Heat, Heat, Off, Cool, and Auto modes.

Fan Selects fan operation mode. Toggles between On and Auto.a

Run Schedule Resumes running schedule.

Cancels Temporary (Not) Occupied action, and/or Temporary setpoint changes.

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

15 63-2605—5

PROGRAMMING

The thermostat operates at the Occupied temperature setting

until the thermostat is programmed. Table 12 shows the

default temperature settings. (The program has four):

— Occupied heat.

— Occupied cool.

— Not Occupied heat.

— Not Occupied cool.

Table 12. Occupied and Not Occupied

Default Temperature Settings.

The thermostat can be set for two Occupied and two Not

Occupied times for each day of the week (28 independent

time settings). Programming Holidays provides a total of 32

independent time settings.

The Temporary Occupied key provides quick temporary

temperature changes for increased occupant comfort. The

Temporary Not Occupied key provides energy efficient

operation for extended periods of time.

IMPORTANT

• Programming the thermostat with the keypad

requires 24 Vac (turn on system power).

• Keyboard lockout must be disabled.

NOTE: Before starting the program procedure, use

Table 13 to organize the program schedule.

Table 13. Occupied and Not Occupied Period Start Times.

aOnly applies to holidays programmed with 365-day calen-

dar

NOTE: 12:00 PM is Noon, and 12:00 AM is Midnight.

Setting Current Day/Time

This can be done using the keypad or a PDA interface.

IMPORTANT

• Once you set the day/time once, you should not

need to set it again. As a result, once a PDA sets the

day using calendar mode (MM/DD/YYYY), keypad

changes to the day are not allowed.

NOTES: To allow keypad day changes, use a PDA as follows:

1. Go to the “Set Clock” function.

2. Change the “Date Mode” from “MM/DD/YYYY” to

“Day of Week”.

3. Press Set.

When using the keypad to change the day/time:

1. Press Set Day until the current day is displayed.

NOTE: Sun = Sunday, Mon = Monday, Tue = Tuesday,

Wed = Wednesday, Thu = Thursday,

Fri = Friday, Sat = Saturday.

2. Press Set Time.

3. Press up S or down T until the current time is

displayed.

NOTE: Tapping Set Time changes the time in one

hour increments.

4. Press Run Schedule.

Setting Schedule Times

Use the PDA or the keys in the “Schedule” area of the keypad

for this procedure.

1. Press Occupied.

NOTE: Anytime a start time is not required, press

Clear Start Time.

2. Press Day until the desired day is displayed.

3. Press Occupied or Not Occupied until the proper period

is displayed.

4. Press up S or down T until the desired start time is

displayed.

5. Repeat steps 3 and 4 for a given day.

6. Repeat steps 2 through 5 until finished.

Program Holidays

IMPORTANT

— Holidays must be first programmed with a PDA.

— Day-of-Week mode forces the T7350 to ignore

holidays.

With holidays set, holiday schedule times can be changed

using the keypad:

1. Use the Schedule Day key to select “Hol” for Holiday

schedule times.

2. Press Occupied or Not Occupied to switch to the proper

time period within the holiday.

Control Occupied Not Occupied

Heating 70° F (21° C) 55° F (13° C)

Cooling 75° F (24° C) 85° F (29° C)

Day

Occupied

Period 1

Not

Occupied

Period 1

Occupied

Period 2

Not

Occupied

Period 2

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

Holidaya

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 16

3. Press up S or down T until the desired time is

displayed.

4. Press Run Schedule.

IMPORTANT

— Invalid holidays are ignored.

— Valid holidays require valid: month, day and duration.

— Holidays such as the fifth Tuesday of a month with

only four Tuesdays are also invalid.

Copying a Day

Use the PDA or almost exclusively keys in the “Schedule”

area of the keypad for this procedure:

1. Press Occupied.

2. Press Day to select the day to be copied.

3. Press Copy.

4. Press Copy again. The following day is automatically

selected. (For example: If the day to be copied is Mon-

day, Tuesday will automatically be selected.)

5. If necessary, press Day until the day to receive the copy

is displayed.

NOTE: To cancel the copy press Run Schedule before

step 6.

6. Press Copy.

NOTE: DONE displays for two seconds then the

program display reappears.

7. Repeat steps 2 through 6 for all the days desired.

8. Press Run Schedule.

Clearing Program Start Times

1. Press Occupied or Not Occupied until the start period to

be cleared is displayed.

2. Press Day until desired day is displayed.

3. Press Clear Start Time.

4. Repeat steps 1 through 3 for all the start times to be

cleared.

5. Press Run Schedule.

Temperature Setpoints

Setpoint Limits

The setpoint temperature range is 40°F to 90°F (4°C to 32°C)

for heating and 45°F to 99°F (7°C to 37°C) for cooling.

NOTES: The ranges mentioned can be limited based upon

setpoints and stops:

1. The greater of the Minimum Heat Stop and the

Not Occupied Heat setpoints determines the

lowest setting to which the occupied heat setpoint

can be adjusted:

°F: Stop/NotOcc ≤ OccHeat ≤ (OccCool - 2).

°C: Stop/NotOcc ≤ OccHeat ≤ (OccCool - 1).

2. The lesser of the Maximum Cool Stop and Not

Occupied Cool setpoints determines the highest

setting to which the occupied cool setpoint can be

adjusted:

°F: Stop/NotOcc ≥ OccCool ≥ (OccHeat + 2).

°C: Stop/NotOcc ≥ OccCool ≥ (OccHeat + 1).

3. The Maximum Occupied Heat Setpoint is limited

by Occupied Cool Setpoint – 2° F (1° C).

4. The Minimum Occupied Cool Setpoint is limited

by the Occupied Heat Setpoint + 2° F (1° C).

Programming Temperature Setpoints

1. Press Occupied Heat.

2. Press up S or down T until the desired

temperature is displayed.

3. Press Occupied Cool.

4. Press up S or down T until the desired

temperature is displayed.

5. Press Not Occupied Heat.

6. Press up S or down T until the desired

temperature is displayed.

7. Press Not Occupied Cool.

8. Press up S or down T until the desired

temperature is displayed.

9. Press Run Schedule.

Temperature Setpoint Overrides

IMPORTANT

— The setup determines the duration of Occupied

overrides.

— Default duration is three hours.

NOTE: To cancel the Override and immediately return to the

program, press Run Schedule.

T7770 Setpoint Knob

A T7770 setpoint knob can remotely adjust the T7350 setpoint.

Adjustment can be made with the sensor in override.

NOTES:

— During override, only occupied and standby heat

setpoints, and cool setpoints are adjusted.

— The maximum adjustment is ±5° F (3° C).

— With a disconnected or failed T7770, or a T7350

not set for remote+setpoint, offset is zero.

T7771 Setpoint Button

A T7770 setpoint button can remotely adjust the T7350

setpoint. Adjustment can be made with the sensor in override.

NOTES:

— During override, only occupied and standby heat

setpoints, and cool setpoints are adjusted.

— The maximum adjustment is ±3° F (2° C).

— With a disconnected or failed T7771, or a T7350

not set for remote+setpoint, offset is zero.

Changing Temperature Setpoint Until Next Program

Period

This is a simple change to perform even with the door closed:

1. Press up S or down T until the desired

temperature is displayed.

NOTE: If done while in Standby or Not Occupied

mode, Temporary Occupied override engages

2. The temporary temperature appears for approximately

ten seconds, then the room temperature is displayed.

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

17 63-2605—5

Using Temporary Occupied Override

The Temporary Occupied Override can be used when the

T7350 is in Not Occupied or Standby mode. It switches to the

Occupied mode for a fixed number of hours.

1. To use the default occupied override, press Temporary

Occupied.

NOTE: The default temperature setting is the

Occupied setpoint.

2. To select a temperature setting other than the default,

press up S or down T until the desired temperature off-

set is displayed (range is 0° F to 3° F [0° TO 2° C]).

NOTE: This offset can be restricted by the limits

detailed in the Setpoint Limits section.

Using Temporary Not Occupied Override

The Temporary Not Occupied Override fixes the device to

operate in Not Occupied mode for a number of days (between

1 and 99) without changing programming saved in memory.

NOTES:

— If the number of days is set to zero, no temporary

change takes effect.

— If the number of days is set just below zero, the

display for days is “---” (an indefinite override).

— To turn off this override, you must press Run

Schedule.

1. Press Temporary Not Occupied.

2. Press up S or down T to change the duration of the

Not Occupied period (in days).

NOTE: The default temperature setting is the

Not Occupied setpoint.

3. Press to display the default setpoint.

NOTE: The only way to change this setpoint is to

change the Not Occupied setpoint.

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 18

OPERATION

Startup Operation

Upon initial thermostat powerup, a startup and initialization

program begins. This startup occurs only on initial powerup.

After total loss of power for an extended period, the current

time and day can be lost (requiring reset). However, the

thermostat retains the user program.

NOTE: With no program set, the thermostat controls to the

Occupied default setpoints of 70°F (21°C) for heat

and 75°F (24°C) for cool.

T7350 Relay Logic

All T7350 model thermostats contain four switching relays. In

conventional applications, the relays control first stage cooling,

first stage heating, fan, and auxiliary. In heat pump

applications, the relays control the heat pump compressor,

changeover, fan, and emergency heat.

NOTE: Models T7350B,D, T7350H1009 have subbases with

more relays to accommodate extra stages.

Logic with Modulating Outputs (T7350H1017, M, only)

The specific relay logic depends on whether or not staging is

employed. See Table 14.

NOTE: The modulating outputs always provide a signal.

Table 14. T7350 Modulating Relay Logic Exceptions.

aSee Table 15 for modulating output signal details.

To display the status of the modulating outputs:

1. Cycle through information displays using the info key.

2. The device displays a percentage value for each output:

a. MODHEAT on one screen.

b. MODCOOL on another screen.

Table 15. Modulating Output Signal.

O/B Terminal for Heat or Cool Changeover

The O/B terminal controls heat pump changeover. The default

operation is for the terminal to be powered when calling for

heat (or while the most recent call was for heat). This

corresponds to a typical O terminal.

NOTE: The O/B terminal can be configured to operate as a

typical B terminal (powered on call for cool).

Emergency Heat

(select T7350 Thermostats only)

With the system set for Em Heat, auxiliary heat serves as

stage one; compressor stages are locked off. The fan cycles

with the auxiliary heat.

Equipment Protection

As part of the operational sequence, the T7350

microprocessor incorporates cycle rate, and minimum on and

off times for all heating and cooling stages. This extends

equipment life as it prevents rapid cycling of equipment.

NOTE: Minimum on and off times are fixed.

Cycle Rates

The thermostat control algorithm maintains the temperature by

cycling stages of heating or cooling to meet setpoint. Cycle

rates, in cycles per hour (cph) are set using a PDA.

NOTE: Defaults are: heat: 6cph, cool: 3cph.

P+I+D Control

The T7350 microprocessor-based control requires that the

user understands temperature control and thermostat

performance. A conventional electromechanical or electronic

thermostat does not control temperature precisely at setpoint.

Typically, there is an offset (droop) in the control point as the

system load changes. This is a phenomenon that most people

in the industry know and accept.

IMPORTANT

• P+I+D (Loop Tuning) parameters are optimized for

proper operation of a vast majority of HVAC systems.

Only when completely certain of necessary and

proper changes should you alter these values.

• Improper changes result in poor system performance

and equipment problems such as compressor short

cycling. Other problems include wide swings in space

temperature and excessive overdriving of modulating

outputs.

All adjustments to Loop Tuning parameters should be gradual.

After each change, allow the system to stabilize to accurately

observe the effects of the change. Then, as needed, make

further refinements until the system operates as desired.

If adjustment of PID parameters is required, use the following:

NOTE: In the items that follow, the term “error” refers to the

difference between the measured space temperature

and the current actual space temperature setpoint:

—The Throttling Range (TR), also called Proportional Gain,

determines the impact of the error on the output signal.

Decreasing TR amplifies the error effect; that is, for a given

error, smaller TR causes higher output signal.

—The Integral Time (IT), also called Integral Gain,

determines the impact of the error-over-time on the output

signal. Error-over-time has two components making up its

value: amount of time the error exists; and size of the error.

The higher the IT, the slower the control response. In other

words, a decrease in IT causes a more rapid change to the

output signal.

Modulating

OutputaStages

Relay Action

Heat/

Cool Fan

(1 to 100

percent)

0 On Output reaches 10%: On

Output falls below 5%: Off

1 or 2 Staged

Cycling

On/Off matches equipment

stage operation

Off

(0 percent)

0,1, or 2 Off Off

Action 0 percent 100 percent

Direct 4 mA 20 mA

Reverse 20 mA 4 mA

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

19 63-2605—5

—The Derivative Time (DT), also called Derivative Gain,

determines the impact of the error rate on the output signal.

The error rate is how fast the error value changes. It can

also be the direction the space temperature is going, either

toward or away from the setpoint, and its speed—rapid or

slow. A decrease in DT causes, for a given error rate, a

greater effect on output signal.

Recovery Ramping Logic

The T7350 incorporates a ramping feature that gradually

changes the space setpoints. During recovery operation, the

setpoint changes at a rate in degrees per hour depending on

the outdoor air temperature. If there is no outdoor air

temperature sensor available, the minimum ramp rate is used.

When recovering in heating, the control point raises gradually,

maximizing the use of the more economical first stage heat to

bring the sensed temperature to the desired comfort setpoint.

This minimizes using the typically more expensive later

stage(s) of heat.

NOTE: See Fig. 11 for a pictorial representation of the heat

ramp rate determination.

Recovery Ramping for Conventional Systems

Fig. 11. Heat setpoint ramping for conventional systems.

NOTES:

— Recovery ramping applies between scheduled

heat or cool setpoint changes from not occupied

to standby and not occupied to occupied.

— Other setpoint changes use a setpoint step

change.

Recovery Ramping for Heat Pump Systems

During recovery with heat pump equipment, the heating

setpoint is split into a heat pump setpoint for compressors,

and two auxiliary heat setpoints for the auxiliary heat stages.

(See Fig. 12 for the various setpoints.)

Fig. 12. Heat setpoint ramping for heat pump systems.

Heat pump ramping for heating proceeds as follows:

1. The heat pump setpoint begins to ramp until the room

temperature and the compressor ramp intersect.

2. At this point, the heat pump setpoint performs a step

change to the Occupied (or Standby) setpoint and all

auxiliary heat stages are disabled.

NOTE: The heat pump setpoint remains here for the

rest of the Not Occupied period.

3. The stage one auxiliary heat ramp is calculated based

on a steeper slope starting 1° F (0.5° C) below the not

occupied setpoint.

4. When the room temperature intersects this auxiliary

heat ramp, the first stage of auxiliary heat is enabled.

5. The stage two auxiliary heat ramp is calculated based

on an even steeper slope starting 2° F (1° C) below the

not occupied setpoint.

6. When the room temperature intersects this auxiliary

heat ramp, the second stage of auxiliary heat is

enabled.

During the cool recovery period, the setpoint changes at a

rate in degrees per hour relative to the outdoor air

temperature. If there is no outdoor air temperature sensor

available, the minimum ramp rate is used.

See Fig. 13 for the various setpoints.

NOTE: For cooling, the same method is used in both

conventional and heat pump systems.

HEAT RECOVERY

RAMP RATE

(DEGREES/HOUR)

MaxHtRamp

MinHtRamp

OaTempMinHtRamp OaTempMaxHtRamp

OUTDOOR AIR

TEMPERATURE

M10109A

AUX HEAT

STAGE 1 RAMP

NORMAL

RECOVERY RAMP

OCCUPIED

SETPOINT

NOT OCCUPIED

SETPOINT

M19877

RECOVERY TIME

OCCUPIED

TIME

AUX HEAT

STAGE 2 RAMP

HEAT PUMP SETPOINT

(FOR COMPRESSORS)

SPACE

TEMPERATURE

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 20

Fig. 13. Setpoint ramping parameters with ramp rate

calculation.

NOTE: The setpoint used during the cool recovery period is

similar to the heat mode in Fig. 11, except the slope

of the line reverses for cooling.

Advantages:

• Comfort setting is achieved at the programmed time and

maintained regardless of weather conditions; occupants

are comfortable.

• Drafts from low-temperature discharge air are minimized

during Occupied periods.

• Use of the more economical first stage of heat is

maximized during recovery, minimizing use of the

expensive later heat stage(s).

• Comfort and energy savings can be achieved in both

heating and cooling.

• Heat cycling reduced, extending equipment life.

Auxiliary Relay

The auxiliary relay can be used with a variety of controls:

• Time-of-day (TOD).

• Economizer minimum position control.

• Dehumidification (see Dehumidification section).

Relay for Time-Of-Day (Table 16)

Time-of-day (TOD) is the Auxiliary Relay default configuration.

TOD logic operates strictly according to programming:

— Occupied: Relay contacts closed.

— Not Occupied: Relay contacts open.

— Standby (Scheduled): Relay contacts closed.

Relay for Economizers

Mechanical cooling is often used with outside temperatures in

the 50°F (10°C) to 60°F (16°C) range and humidity below 50

percent. In central and northern climates, hundreds of hours

fall into this temperature category. By permitting 80 to 100

percent outside air into the system, mechanical cooling may

not be needed at all, particularly during Spring and Fall.

Economizers take advantage of outside air. The typical

economizer consists of an outside air damper, motor, outdoor

air changeover control and a minimum position potentiometer.

The motor controls the dampers. Suitability of the outside air

for cooling is determined by the outdoor air changeover

control. The potentiometer adjusts the minimum position of

the economizer dampers, which provide a minimum amount

of fresh air for ventilation.

The economizer reduces compressor run time, thereby saving

energy and extending compressor life. The drawback to using

the economizer is that during the Not Occupied period, if there

is no call for cool or outdoor air is not suitable for free cooling,

the economizer is controlled to minimum position. This

position allows some percentage of outdoor air to enter the

building, regardless of air suitability. The situation can cause

the heating or cooling to run more often than when only

suitable air is permitted to enter the building.

The T7350 can take advantage of an economizer by closing

the auxiliary relay contacts to control the economizer

minimum position potentiometer. (See Table 16 for details.)

— Powered: Allows normal economizer operation.

— Unpowered: Disables the economizer minimum position.

The lack of power causes the economizer to drive dampers

fully closed instead of staying at minimum open position.

This reduces the possibility of unsuitable outdoor air

entering the building, which lowers the internal load on the

HVAC system and saves additional energy.

Table 16. Auxiliary Relay Logic (Economizer and TOD).

aUnless otherwise noted, Economizer logic ignores calls for

heat. TOD logic always observes calls for heat.

bWith fan set to AUTO and call for neither heat nor cool, the

relay is open in order to disable damper minimum position.

Other Uses for the Auxiliary Relay

Examples of other uses of the auxiliary relay are hot water

heaters, lighting, or baseboard heat. The additional loads are

connected to the auxiliary relay contacts on the subbase. The

contacts are rated for 1.5A at 30 Vac, but can be adapted to

higher current applications using an external relay.

(See Fig. 14 through 16.)

COOL RECOVERY

RAMP RATE

(DEGREES/HOUR)

MaxClRamp

MinClRamp

OaTempMinClRamp OaTempMaxClRamp

OUTDOOR AIR

TEMPERATURE

M10111A

Occupancy Call for

Coola

Auxiliary Contacts

Scheduled Sensor Signal Economizer TOD

—Occupied —ClosedbClosed

Occupied Standby Yes Closed Open

Occupied Standby No Open Open

Standby Standby —ClosedbClosed

— Not Occupied Yes Closed Open

— Not Occupied No Open Open

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

21 63-2605—5

Fig. 14. Using T7350A,B,D,M models with an external

relay (with loads greater than 1.5A).

Fig. 15. Using T7350H models with an external relay

powered from thermostat transformer.

Fig. 16. Using T7350H models with an external relay

powered from an auxiliary transformer.

Default Auxiliary Relay Operations

(T7350D, T7350H1009 only)

Unless configured as a stage of heating or cooling, terminals

W2, W3, and Y3 operate for specific auxiliary functions. Each

output takes on different auxiliary functions depending on

configuration for Conventional or Heat Pump operation. See

Table 17 for details.

NOTE: The default functions cannot be modified. They are

limited to firmware version 1.3.0 or higher.

M19613

RELAY REQUIRED (R8222 OR SIMILAR).

T7350A,B,D,M SUBBASE

LOAD

AUXILIARY

RELAY

CONTACT

AUX

M22487

RELAY REQUIRED (R8222 OR SIMILAR).

T7350H SUBBASE

LOAD

AUXILIARY

RELAY

CONTACT

AUX

M22488

RELAY REQUIRED (R8222 OR SIMILAR).

POWER SUPPLY. PROVIDE DISCONNECT MEANS

AND OVERLOAD PROTECTION AS REQUIRED.

T7350H SUBBASE

LOAD

AUXILIARY

RELAY

CONTACT

AUX

(HOT)

AUXILIARY

TRANSFORMER

Table 17. Default Auxiliary Relay Operations.

aSimple dehumidification uses a normally closed contact. The relay is closed when humidity is below the high limit. When the

humidity is above the high limit, the contact is open.

bThe PDA configuration tool output screen displays available Auxiliary Relay functions based on this configuration.

Heat Pump or

Conventional

Contact Not Used

as Heat or Cool Stage Contact Configuration of Contact Not Used as Stage

Heat Pump Y3 not Simple

Dehumidificationa

Simple

Dehumidificationa

Time of Day Time of Day

W2 not aux heat Economizer Time of Day Economizer Economizer

Conventional W3 not Simple

Dehumidificationa

Simple

Dehumidificationa

Simple

Dehumidificationa

Time of Day

Y3 not (W3 not) Economizer Time of Day Time of Day Economizer

Y3 not (W3 used) Simple

Dehumidificationa

Simple

Dehumidificationa

Simple

Dehumidificationa

Time of Day

Auxiliary Contact Configurationb:Time of Day Economizer Hot Gas Bypass

Dehumidification

Simple

Dehumidificationa

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 22

Dehumidification (T7350D,M,H only)

There are five methods through which the T7350 can control

for dehumidification. Three of them modify the control

algorithm, thus providing limited dehumidification through

cooling. The other two use the auxiliary output to control

another device.

IMPORTANT

Configurable only with a PDA or a network tool such

as LonSpec or CARE.

NOTE: The dehumidification high limit can be set within the

range of 10 to 90 percent relative humidity.

Control Through Cooling

Configure using some combination of the following:

— Minimum On.

— Reheat.

— Reset.

NOTES:

— These methods operate only during cooling.

— Selecting both Reheat and Reset can cause

frequent setpoint adjustments. This selection

is not recommended.

MIN ON TIME

Dehumidifies by increasing the compressor minimum on time

(normally 3 minutes) by a programmable amount. This is

useful with oversized systems in that it forces the coils to cool

to a point where dehumidification can occur.

NOTES:

— Can force wider temperature swings by cooling

when setpoint control does not require it.

— The minimum on time can be set within the range

of 5 to 15 minutes.

— Hysteresis and a minimum timer are used to

ensure this behavior does not change with every

equipment cycle.

REHEAT

Dehumidifies by operating cooling during typical off time. The

T7350 maintains the proper setpoint by running the heat at the

same time.

IMPORTANT

At times during Reheat dehumidification, the T7350

operates heating and the cooling simultaneously.

This is normal.

NOTES:

— The heat stage never energizes during Reheat if

more than one cool stage is on.

— Reheat mode cannot occur during heating.

— The T7350H1017, T7350M do not support the

Reheat method.

RESET TEMP SETPT

The room temperature set point resets to a specified number

of degrees below the actual set point when room relative

humidity (RH) rises above humidity high limit.

Though this may not technically reduce RH, it reduces the

dew point to provide the customer with a sense of comfort due

to a lower temperature setting in the room.

As long as RH stays above humidity high limit, this set point is

maintained.

NOTE: Hysteresis and a minimum timer prevent the set

point from short interval alternation (between stan-

dard and reset set points).

Options Utilizing Auxiliary Output

There are two dehumidification options that utilize the

auxiliary output. They are:

— Simple Dehumidification.

— Hot Gas Bypass Dehumidification.

SIMPLE DEHUMID(IFICATION)

The auxiliary output:

— Energizes when RH rises above humidity high limit.

— De-energizes when RH drops below humidity high limit.

NOTES:

— Hysteresis and a minimum timer prevent short

cycling of this output.

— Unlike Dehumid Hot Gas BP the relay remains

energized during calls for multiple cooling stages.

DEHUMID HOT GAS BP

The auxiliary output operates as shown in Table 18.

Table 18. Hot Gas Bypass Dehumidification Logic.

Auxiliary output during call for multiple cooling stages for two

reasons:

1. This method assumes that the cooling provides dehu-

midification.

2. Multiple cooling stages probably provide necessary

dehumidification.

NOTE: Hysteresis and a minimum timer prevent short

cycling of this output.

Humidity Cooling Stages Active Auxiliary Output

High more than one De-energized

High one or less Energized

Low more than one De-energized

Low one or less De-energized

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

23 63-2605—5

TROUBLESHOOTING GUIDE (TABLE 19)

Table 19. Troubleshooting Information.

Symptom Possible Cause Action

Display will not come on. Thermostat is not being powered. Check that X terminal is connected to the system

transformer.

Check for 24 Vac between X and RH or RC terminals.

If missing 24 Vac:

•Check if circuit breaker is tripped; if so, reset circuit

breaker.

•Check if system fuse is blown; if so, replace fuse.

•Check if the HVAC equipment power switch is in the Off

position; if so, set to the On position.

•Check wiring between thermostat and HVAC

equipment. Replace broken wires and tighten loose

connections.

If 24 Vac is present, proceed with troubleshooting.

Temperature display is

incorrect.

Room temperature display has been

recalibrated.

Use PDA configuration software to recalibrate as desired.

Thermostat is configured for °F or °C

display.

Press both Run Schedule and Copy, then reconfigure the

display.

Bad thermostat location. Relocate the thermostat.

Display shows three dashes and a degree

sign (all systems shut down).

T7350 is set for remote sensing and sensor is missing or

circuit is either open or shorted.

Temperature settings will

not change.

(Example: Cannot set

heating higher or cooling

lower.)

Upper or lower temperature limits were

reached.

Check the temperature setpoints:

•Heating limits are 40° to 90° F (7° to 31° C)

•Cooling limits are 45° to 99° F (9° to 37° C)

Occupied setpoint temperature range

stops were configured.

Using a PDA, check setpoint stops. If necessary,

reconfigure the stop(s).

Keypad is locked. When a locked key is

pressed, LOCKED appears momentarily

on the LCD.

•Use PDA (Set, Display) to unlock keypad.

•Press both Run Schedule and Copy, then change

keypad lock level.

Room temperature is out

of control.

Remote temperature sensing is not

working.

Check all remote sensors.

Heat will not come on. No power to the thermostat. Check that X terminal is connected to the system

transformer.

Check for 24 Vac between X and RH terminals.

If missing 24 Vac:

•Check if circuit breaker is tripped; if so, reset circuit

breaker.

•Check if system fuse is blown; if so, replace fuse.

•Check if the HVAC equipment power switch is in the Off

position; if so, set to the On position.

•Check wiring between thermostat and HVAC

equipment. Replace broken wires and tighten loose

connections.

If 24 Vac is present, proceed with troubleshooting.

Thermostat minimum off time is activated. •Wait up to five minutes for the system to respond.

•Use PDA to configure heating response.

System selection is set to Off or Cool. Set system selection to Heat or Auto.

DAT high limit has been reached, or

OAT lockout is engaged.

•If the setpoints are correct, do nothing.

•Use PDA (Heating Config) to adjust or disable DAT

high limit and/or OAT lockout.

•Check HVAC equipment to ensure proper operation.

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 24

Cooling will not come on. No power to the thermostat. Check that X terminal is connected to the system

transformer.

Check for 24 Vac between X and RC terminals.

If missing 24 Vac:

•Check if circuit breaker is tripped; if so, reset circuit

breaker.

•Check if system fuse is blown; if so, replace fuse.

•Check if the HVAC equipment power switch is in the Off

position; if so, set to the On position.

•Check wiring between thermostat and HVAC

equipment. Replace broken wires and tighten loose

connections.

If 24 Vac is present, proceed with troubleshooting.

Thermostat minimum off time is activated. •Wait up to five minutes for the system to respond.

•Use PDA to configure cooling response.

System selection is set to Off or Heat. Set system selection to Cool or Auto.

DAT low limit has been reached, or

OAT lockout is engaged.

•If the setpoints are correct, do nothing.

•Use PDA (Cooling Config) to adjust or disable DAT low

limit and/or OAT lockout.

•Check HVAC equipment to ensure proper operation.

System indicator (flame:

heat, snowflake: cool) is

displayed, but no warm or

cool air is coming from

the registers.

The call for heat or cool is not yet given. Check if any stage indicators (dots next to the system

indicator) are displayed. With no display of stage

indicators, no call for cool/heat via relay is yet given.

For T7350M models only: Check the information screens.

MODHEAT or MODCOOL percentages of zero and 100

indicate an extreme signal from the given terminal. See

Table 15 for details.

Conventional heating equipment turns the

fan on only after the furnace has warmed

to a setpoint.

Wait one minute after seeing the on indicator and then

check the registers.

Heating or cooling equipment is not

operating.

Verify operation of heating or cooling equipment in Test

Mode.

Table 19. Troubleshooting Information. (Continued)

Symptom Possible Cause Action

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

25 63-2605—5

WIRING DIAGRAMS (FIG. 17-25)

Fig. 17. Typical hookup of T7350A in two-stage heat and one-stage cool conventional system

with two transformers.

Fig. 18. Typical hookup of T7350B in two-stage heat and two-stage cool conventional system

with two transformers.

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

M19764A

RCX

SUBBASE

W1 GY1AUXRH

(HOT)

L2 1

(HOT)

COMPRESSOR

CONTACTOR 1

HEATING

TRANSFORMER

COOLING

TRANSFORMER

FAN

RELAY

HEAT

RELAY 2

HEAT

RELAY 1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M19765A

RCX

SUBBASE

W1 G

T7770 REMOTE SENSOR

W2 Y2

AUXRH

T5 T6 T7 T4 T3

DISCHARGE

AIR

SENSOR

OUTDOOR

AIR

SENSOR

OSOS ASAS

(HOT)

L2 1

(HOT)

COMPRESSOR

CONTACTOR 1

COMPRESSOR

CONTACTOR 2

HEATING

TRANSFORMER

COOLING

TRANSFORMER

HEAT

RELAY 1

123456789

FAN

RELAY

ECONOMIZER

HEAT

RELAY 2

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 26

Fig. 19. Typical hookup of T7350B in three-stage heat and two-stage cool heat pump system

with two transformers.

Fig. 20. Typical hookup of T7350D in three-stage heat and three-stage cool conventional system with one transformer.

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M19767A

RCX

SUBBASE

O/B G

T7770 REMOTE SENSOR

W2 Y2

AUXRH

T5 T6 T7 T4 T3

DISCHARGE

AIR

SENSOR

OUTDOOR

AIR

SENSOR

OSOS AS

(HOT)

L2 1

(HOT)

COMPRESSOR

CONTACTOR 1

COMPRESSOR

CONTACTOR 2

HEATING

TRANSFORMER

COOLING

TRANSFORMER

CHANGE

OVER

123456789

FAN

RELAY

ECONOMIZER

AUX HEAT

STAGE 1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.

HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M19766A

RCX

SUBBASE

W1 G

T7770 REMOTE SENSOR

W3/Y4 Y3 W2 Y2

AUXRH

T5 T6 T7 T4 T3

DISCHARGE

AIR

SENSOR

OUTDOOR

AIR

SENSOR

MOTION

SENSOR

HUMIDITY

SENSOR

OSOS ASAS

MHC HP

(HOT)

COMPRESSOR

CONTACTOR 1

COMPRESSOR

CONTACTOR 2

HEAT

RELAY 1

123456789

FAN

RELAY

ECONOMIZER

HEAT

RELAY 2

COMPRESSOR

CONTACTOR 3

HEAT

RELAY 3

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

27 63-2605—5

Fig. 21. Typical hookup of T7350D in two-stage heat and four-stage cool conventional system.

Fig. 22. Typical hookup of T7350H1009 in three-stage heat and three-stage cool conventional system with one

transformer.

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.

HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M19768

RCX

SUBBASE

W1 G

T7770 REMOTE SENSOR

W3/Y4 Y3 W2 Y2

AUXRH

T5 T6 T7 T4 T3

DISCHARGE

AIR

SENSOR

OUTDOOR

AIR

SENSOR

MOTION

SENSOR

HUMIDITY

SENSOR

OSOS ASAS

MHC HP

(HOT)

COMPRESSOR

CONTACTOR 1

COMPRESSOR

CONTACTOR 2

HEAT

RELAY 1

123456789

FAN

RELAY

ECONOMIZER

HEAT

RELAY 2

COMPRESSOR

CONTACTOR 3

COMPRESSOR

CONTACTOR 4

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.

HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M22489

AUX

SUBBASE

W1 G

T7770 REMOTE SENSOR

W3/Y4 Y3 W2 Y2

AUXRH

T5 T6 T7 T4 T3

DISCHARGE

AIR

SENSOR

OUTDOOR

AIR

SENSOR

MOTION

SENSOR

HUMIDITY

SENSOR

OSOS ASAS

MHC HPHSEB

(HOT)

LONWORKS®

BUS

COMPRESSOR

CONTACTOR 1

COMPRESSOR

CONTACTOR 2

HEAT

RELAY 1

123456789

FAN

RELAY

ECONOMIZER

HEAT

RELAY 2

COMPRESSOR

CONTACTOR 3

HEAT

RELAY 3

LONWORKS®

BUS

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 28

Fig. 23. Typical hookup of T7350H1017 for system with two independent heat stages (one modulating),

two independent cool stages (one modulating), and two transformers.

Fig. 24. Typical hookup of T7350M for system with two independent heat stages (one modulating),

two independent cool stages (one modulating), and one transformer.

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M22006

RCX

SUBBASE

W1 G

AUX

T7770 REMOTE SENSOR

AH AC

AUXRH

T5 T6 T7 T4 T3

DISCHARGE

AIR

SENSOR

OUTDOOR

AIR

SENSOR

MOTION

SENSOR

HUMIDITY

SENSOR

OSOS AS AXAS

MHC HPHSEB

(HOT)

HEATING

TRANSFORMER COOLING

TRANSFORMER

(HOT)

COMPRESSOR

CONTACTOR 1

HEAT

RELAY 1

123456789

FAN

RELAY

ECONOMIZER

MODULATING

HEAT

(4-20 mA)

–

MODULATING

COOL

(4-20 mA)

–

LONWORKS®

BUS

LONWORKS®

BUS

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.

HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M19769

RCX

SUBBASE

W1 G

T7770 REMOTE SENSOR

MH MC

AUXRH

T5 T6 T7 T4 T3

DISCHARGE

AIR

SENSOR

OUTDOOR

AIR

SENSOR

MOTION

SENSOR

HUMIDITY

SENSOR

OSOS AS MXAS

MHC HP

(HOT)

COMPRESSOR

CONTACTOR 1

HEAT

RELAY 1

123456789

FAN

RELAY

ECONOMIZER

MODULATING

HEAT

(4-20 mA)

–

MODULATING

COOL

(4-20 mA)

–

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

29 63-2605—5

Fig. 25. Typical hookup of T7350M for system with two independent heat stages (one modulating),

two independent cool stages (one modulating), and two transformers.

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M22006

RCX

SUBBASE

W1 G

T7770 REMOTE SENSOR

MH MC

AUXRH

T5 T6 T7 T4 T3

DISCHARGE

AIR

SENSOR

OUTDOOR

AIR

SENSOR

MOTION

SENSOR

HUMIDITY

SENSOR

OSOS AS MXAS

MHC HP

(HOT)

HEATING

TRANSFORMER

COOLING

TRANSFORMER

L2 1

(HOT)

COMPRESSOR

CONTACTOR 1

HEAT

RELAY 1

123456789

FAN

RELAY

ECONOMIZER

MODULATING

HEAT

(4-20 mA)

–

MODULATING

COOL

(4-20 mA)

–

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 30

APPENDIX - PDA USAGE

See Table 20 for the advanced setup options available

through a PDA.

NOTE: Upon initial thermostat power-up, wait at least 30

seconds before connecting the TIM.

Hardware Requirements

The Thermostat Configuration Tool has the following

configuration:

• PDA hardware platform supporting application software.

• Serial Connection Cable with TIM. The interface plug

connects to the thermostat socket.

CAUTION

Equipment Damage Hazard

Can damage the TIM connection beyond repair.

Disconnect the TIM cable prior to opening or closing

the thermostat cover.

Setting Clock

It is best to set the clock before downloading anything else to

the thermostat. Connect to the thermostat and set the clock.

See Fig. 26.

NOTES:

— When setting the clock the first time, the PDA

displays an incorrect T7350 Clock time, day, and

date.

— Day-of-Week mode forces the T7350 to ignore

holidays.

Fig. 26. Set Clock menu.

PDA Programming

The PDA Configuration Tool can perform a variety of tasks:

• Configure the thermostat.

• Calibrate the thermostat.

• Perform diagnostics.

NOTE: To install the configuration tool on a second PDA:

1. Power up both PDAs.

2. Execute the following command sequence from

the source PDA: Menu, Beam, T7350, Beam.

Configuration

Whether the configuration is performed offline or while

connected, the procedure is the same.

OFFLINE CONFIGURATION

While disconnected from the thermostat, you can arrange and

save named configurations.

NOTE: The user can note the Configuration ID and manually

set the code using the T7350 user interface.

CONNECT AND CONFIGURE

Connect to a thermostat and:

— configure device with existing named parameter

arrangement,

— configure device by changing all parameters

— read the existing configuration parameter values and

— change one or more configuration parameters

— save new configuration file.

NOTE: The configuration tool verifies that the subbase

supports the existing arrangement.

CONFIGURATION PROCEDURE

1. Enter the T7350 PDA application. (See Fig. 27.)

2. If disconnected, the only usable functions are:

a. New Config:

(1) Enter a name for the configuration.

(2) Tap New Config.

(3) Proceed to Select Existing Config(uration)

section.

b. Select Existing Config: See below.

Fig. 27. PDA configuration tool main menu.

Select Existing Config(uration)

This function is used to select a programmed configuration

when setting up/programming a T7350. This can be useful

when you use any given configuration more than once.

NOTES:

— You can modify details of a given configuration

prior to downloading it into any particular T7350.

— The PDA tool will notify you when a selected

configuration requires more stages/features than

the T7350 into which you are downloading it.

— Configuration screens will vary depending on the

T7350 model selected.

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31 63-2605—5

To configure a T7350:

1. From the opening screen, tap Select Existing Config.

(See Fig. 28.)

2. Select the desired configuration.

Fig. 28. Select Existing Config.

3. This brings up the Summary screen. From here, you

can make changes using the:

a. Novice navigation screens (that appear), or

b. Advanced navigation screens, using the hidden

menus. (These are designed for expert users.)

(1) Access to the Advanced Navigation mode is

obtained using one of the following methods:

(a)Tap the lower left “Menu” silk screen icon.

(b)Tap the Title Tab of any screen.

RESULT: The Config Tool replaces the existing Screen

Title Tab with the Advanced Navigation menu

displayed across the top of the screen.

4. Tap “SaveAs” to save the changes under a new name.

5. The Summary screen facilitates changes to:

a. Description.

b. Model.

c. Control (Standard or Heat Pump).

Fig. 29. Configuration Summary screen.

6. Make changes and tap “Next” to proceed to the Inputs

screen.

7. The Inputs screen facilitates changes to:

a. RoomTemp(erature).

b. Room Rel(ative) Humidity.

c. Occ(upancy) Sensor.

d. Discharge Air Temp(erature).

e. Outdoor Air Temp(erature).

NOTE: Some selections only appear for the models

that support them.

Fig. 30. Inputs screen.

8. Make changes and tap “Next”.

NOTE: Novice navigation to the Dehumidification

screen is controlled based on the T7350 model

and configured room humidity sensor status.

So, step 9 and Fig. 31 may not apply.

9. The Dehumidification screen facilitates changes to:

a. Room humidity high limit.

b. Dehumidification options.

Fig. 31. Dehumidification screen.

10. Make changes and tap “Next” to proceed to the Cooling

Config(uration) screen.

11. The Cooling Config screen facilitates changes to:

a. Number of Stages.

b. Cooling Response.

c. OAT Lockout and DAT Low Limit Setpoints (for

some models).

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 32

Fig. 32. Cooling Config(uration) screen.

12. Make changes and tap “Next” to proceed to the Heating

Config(uration) screen.

13. The Heating Config(uration) screen facilitates changes

to:

a. Number of Stages.

b. Heating Response.

c. OAT Lockout and DAT High Limit Setpoints (for

some models).

Fig. 33. Heating Config(uration) screen.

14. Make changes and tap “Next” to proceed to the Outputs

screen.

15. The Outputs screen facilitates changes to output

type(s).

NOTE: When configured with an extra stage of heat or

cool (using the auxiliary stage) the Outputs

screen shows nothing but this indication.

Fig. 34. Outputs screen.

16. Make changes and tap “Next” to proceed to the Fan

screen.

17. The Fan screen facilitates changes to:

a. Fan Switch (On or Auto).

b. Fan Operation (Conventional or Electric Heat).

c. Heat and cool extended operation.

Fig. 35. Fan screen.

18. Make changes and tap “Next” to proceed to the Weekly

Schedule screen.

NOTE: The only schedule days/times displayed are

those in the program. It is possible to have as

many as 4 event times per day for each day

(including holiday) programmed into each set.

19. The Weekly Schedule screen facilitates changes to the

program schedule:

a. Tap Modify. (See Fig. 37.)

b. Select a day to modify.

c. Make changes to:

(1) Mode (see Fig. 38).

NOTE: To remove a given event, change Mode

to “None”.

(2) Time (see Fig. 39).

d. Repeat step c for all events until changes are

complete for the given day.

NOTE: To copy a day schedule, check the appropriate

boxes, and click CopyDayTo. (See Fig. 40.)

e. Tap OK.

f. Type in a name for the new schedule.

g. Tap SaveAs.

T7350MT7350D

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

33 63-2605—5

Fig. 36. Weekly Schedule screen.

Fig. 37. Weekly Schedule modification screen.

Fig. 38. Weekly Schedule Mode modification.

Fig. 39. Weekly Schedule Time modification.

Fig. 40. Weekly Schedule Mode CopyDayTo.

20. Tap “Next” to proceed to the SetPoints screen.

21. The SetPoints screen facilitates changes to the:

a. Default setpoints.

b. Occupied Setpoint stops.

c. Temporary Override duration.

Fig. 41. SetPoints screen.

22. Make changes and tap “Next” to return to the Summary

screen.

23. Tap “Save” to save changes under the existing name.

24. Tap “DownLd” to download changes to a connected

T7350.

25. Tap “CnfgID” to have the device calculate configuration

number(s).

26. The configuration numbers represent the C numbers

(C1.C2.C3.C4.C5.C6.C7.C8) that can be input using

the T7350 keypad.

NOTE: The configuration numbers determine all but

the schedule and setpoints.

27. To return to the Home Screen, tap the Menu icon (lower

left hand corner silk screen) and tap Set / Home.

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 34

Fig. 42. Summary screen with configuration numbers.

Deleting Configurations

1. Make certain you are in a configuration other than the

one you plan to delete.

2. Tap the Summary tab in the upper left corner.

3. Select File / Delete.

4. Select the configuration to delete.

5. Tap DELETE.

6. A prompt appears allowing you to cancel the deletion.

7. To delete more configurations, return to step 4.

8. When finished with deletions, tap DONE.

Weekly (Wkly) Schedule

This function is used to upload/modify/download schedule

sets for programming a T7350. This can be useful if you want

to change only schedule settings.

NOTE: The schedule can also be modified from within a

given configuration.

Holidays

This function is used to upload/modify/download holiday sets

for programming a T7350. This can be useful if you want to

change only holiday settings. It is especially useful if you use

any group of holidays more than once.

NOTE: The holidays can be modified from within a given

configuration.

To create a new holiday group:

1. From the main menu, tap Holidays. (See Fig. 43.)

NOTE: The only holidays displayed are those

contained in a program set. It is possible to

have as many as 10 holidays programmed into

each set.

Fig. 43. Holiday screen.

2. Tap Modify. (See Fig. 44.)

Fig. 44. Holiday modification screen.

3. Select a holiday slot to modify or create.

4. Make changes to:

a. Holiday title.

b. Start Month.

NOTE: To remove a given holiday, change the Start

Month to “None” and tap “OK”. The title will

remain, but the holiday will not operate.

c. Start Day.

d. Duration.

NOTE: To remove all evidence of a given holiday,

change Title to “Hol ##”, Start Month and Start

Day to “None”, Duration to “0” and tap “OK”.

e. Spin Speed.

NOTE: Spin Speed determines the increment change

(1X or 10X) for Start Day and Duration. The

spin speed setting is local for each screen.

5. Repeat steps 2 through 4 until changes are complete for

the given holiday set.

6. Type in a name for the new holiday set.

7. Tap SaveAs.

8. Repeat steps 2 through 8 for all desired holiday sets.

9. To return to the main menu, tap the Holiday screen OK.

Calibration

Connect to a thermostat and calibrate the temperature

display.

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

35 63-2605—5

Online Diagnostics

Connect to a thermostat and, using the “Monitor Data”

function, read diagnostic information including:

• Thermostat firmware version.

• Thermostat hardware version.

• Subbase hardware version.

• Run time error messages.

Table 20. Thermostat Setup Options Through PDA.

Configuration Option Factory DefaultaPDA

Tool CnfgID Description

Fan Operation Conventional X X Conventional: Applications where equipment controls fan operation in heat mode.

Electric Heat: Applications where thermostat controls fan operation in heat mode.

The thermostat always controls the fan in cool mode.

Extended Heat Fan Extend 90 sec X X No Extended Op: No extended fan operation after call for heat ends.

Extend 90 sec: Fan operation extended 90 seconds after call for heat ends.

Extended Cool Fan No Extended Op X X No Extended Op: No extended fan operation after call for cool ends.

Extend 40 sec: Fan operation extended 40 seconds after call for cool ends.

Control Standard X X Standard: Conventional equipment; Heat Pmp: Heat Pump.

HeatPump RevValve ActvClg X X ActvClg: Energize O/B on call for cool.

ActvHtg: Energize O/B on call for heat.

Heat Output Stages aX X Stages of heat (conventional HVAC equipment). Set to zero for heat pump.

Three heat stages not available if configured for four stages of cooling.

AuxStg 1 X X Auxiliary Heat Stages (for heat pump applications): Number of stages (0,1, or 2).

Heating Response 6 cph X X 3 cph: Standard response for heating system;

6 cph: Medium response for heating system; 9 cph: Fast response for heating system;

20 cph: Super fast response for heating systems.

Heat Lockout None X X None: No outdoor air temperature (OAT) lockout for heat.

Enable: Heat locked out when OAT is greater than Heat Lockout Setpoint.

Heat Lockout Setpoint 70° F X Heat is locked out when OAT is greater than this setpoint.

Range: -40 to 120° F

Cool Output stages aX X Stages of cool (conventional), or number of compressor stages (heat pump).

Cooling Response 3 cph X X 3 cph: Standard response for cooling system.

4 cph: Fast response for cooling system.

Cooling response applies to compressors in heat pump applications.

Cooling Lockout None X X None: No OAT lockout for cool.

Enable: Cool locked out when OAT is less than Cool Lockout Setpoint.

Cool Lockout Setpoint 35° F X Cooling is locked out if the outdoor temperature is less than this setpoint.

Range: -40 to 120° F

Cooling Valve Direct X X Modulating Cooling Valve Action: Direct or Reverse. (T7350M only.)

Heating Valve Direct X X Modulating Heating Valve Action: Direct or Reverse. (T7350M only.)

Anticipator Authority

Application

Htg X X Htg: Authority applies to heating only.

Htg&Clg: Authority applies to both heating and cooling. (Found in Loop Tuning.)

Anticipator Authority 4° F X X Thermostat Anticipator Authority. Range: 2 to 15° F.

Cooling TR aX Cooling Throttling Range. Range: 1 to 30° F. (Found in Loop Tuning.)

Cooling IT aX Cooling Integral Time. Options: 0, 100 to 5000 sec. (0: disable.)

Cooling DT 0 sec X Cooling Derivative Time. Options: 0, 10 to 3000 sec. (0: disable.)

Heating TR aX Heating Throttling Range. Range: 1 to 30° F. (Found in Loop Tuning.)

Heating IT aX Heating Integral Time. Options: 0, 100 to 5000 sec. (0: disable.)

Heating DT 0 sec X Heating Derivative Time. Options: 0, 10 to 3000 sec. (0: disable.)

Display Units °F X X Temperature Display: °F or °C.

Clock Format AM/PM X X AM/PM: 12-hour clock format. 24 hr: 24-hour clock format.

aThe Factory defaults listed here apply to all subbase models with the exceptions of the items listed in Table 21.

b12:00 Noon is the default start point when time is unknown.

cOnly Available if user selected one or more of following: Dehumidification Reset, Dehumidification Minimum On, or Dehumidification Reheat.

dConfig ID cannot handle Standby setpoints. Keypad users cannot set Occupied setpoints that violate Not Occupied setpoint relationship. The T7350 algo-

rithm never allows the effective setpoint outside Not Occupied setpoints.

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 36

Temperature Display

Calibration

No Change X No Change: Displayed temperature is actual room temperature.

Can adjust to display up to 3° F (1.7° C) higher or down to 4° F (2.2° C) lower than

room temperature.

TempOverride 3 X X Temporary Occupied Override duration. Range: 1 to 8 hours.

RoomTemp Local X X Room Temperature Input

Local: Use internal sensor; T7770A/D: Use remote sensor.

T7770B/C: Use remote sensor with setpoint adjustment capability (requires PDA).

T7771: Use remote sensor with setpoint adjustment capability (requires PDA); changes

T7771 LED and bypass button operation: LED on means either occupied or bypass,

pushing bypass can cancel bypass.

RoomRelHumidity aX X Room Relative Humidity Input.

None: No humidity sensor; Local: Use internal humidity sensor;

Remote: Use remote humidity sensor (0-10 Vdc signal).

Discharge AirTemp None X X Discharge Air Temperature Input.

None: No discharge air sensor; or Remote: Remote discharge air sensor.

Outdoor AirTemp None X X Outdoor Air Temperature Input.

None: No outdoor air sensor; or Remote: Remote outdoor air sensor.

OccSensor 0 X X None: No occupancy sensor; or Remote: Remote occupancy sensor.

AuxDO Time of Day X X Auxiliary Contact Operation:

Time of Day, Economizer, Dehumid Hot Gas BP, or Simple Dehumid.

Auxiliary contact not available if heat pump selected with T7350A.

Key Pad (Lockout) Enable All X X Keypad lockout enable/disable through special keypad sequence.

Enable All (0): No lockout.

SetPts & Ovrrd (1): Lockout all keys except: Temporary (Not) Occupied, S, T and

Info Only (2): Lockout all keys except .

The special keypress features are never locked out.

Recovery Heat RampMin 5° F/hr X Minimum heating recovery ramp rate. Range: 0 to 20° F/hr.

Recovery Heat RampMax 8° F/hr X Maximum heating recovery ramp rate. Range: 0 to 20° F/hr.

Recovery Cool RampMin 3° F/hr X Minimum cooling recovery ramp rate. Range: 0 to 20° F/hr.

Recovery Cool RampMax 6° F/hr X Maximum heating recovery ramp rate. Range: 0 to 20° F/hr.

Recovery Heat OAT@Min 0° F X Minimum heating outdoor air temperature. Range: -20 to 100° F.

Recovery Heat OAT@Max 40° F X Maximum heating outdoor air temperature. Range: -20 to 100° F.

Recovery Cool OAT@Min 90° F X Minimum cooling outdoor air temperature. Range: -20 to 100° F.

Recovery Cool OAT@Max 70° F X Maximum cooling outdoor air temperature. Range: -20 to 100° F.

Demand Limit Control Bump 3° F X Demand limit control set point bump. Range: 0 to 10° F.

Power Failure Seq Start 0 (x10 sec) X X Delays start of equipment (fan, heat, cool) after power restored to thermostat.

Range: 0 to 150 seconds (in 10-second increments).

Enable DAT High Limit None X X None: No Discharge Air Temperature (DAT) high limit; Enable: Use DAT High Limit.

Enable DAT Low Limit None X X None: No Discharge Air Temperature (DAT) low limit; Enable: Use DAT Low Limit.

High Limit DAT Setpoint 110° F X Discharge Air Temperature High Limit Setpoint. Range: 65 to 140° F.

Low Limit DAT Setpoint 45° F X Discharge Air Temperature Low Limit Setpoint. Range: 35 to 60° F.

Dehumidification Min On None X X None: No Minimum On Time dehumidification;

Enable: Dehumidification using Minimum On Time.

Dehumidification Min On Time 5 X Minimum on time used with “Dehumidify Minimum On”. Range: 5 to 15 minutes.

Dehumidification Reset Temp None X X None: No Reset dehumidification; Enable: Dehumidification using Reset.

Table 20. Thermostat Setup Options Through PDA. (Continued)

Configuration Option Factory DefaultaPDA

Tool CnfgID Description

aThe Factory defaults listed here apply to all subbase models with the exceptions of the items listed in Table 21.

b12:00 Noon is the default start point when time is unknown.

cOnly Available if user selected one or more of following: Dehumidification Reset, Dehumidification Minimum On, or Dehumidification Reheat.

dConfig ID cannot handle Standby setpoints. Keypad users cannot set Occupied setpoints that violate Not Occupied setpoint relationship. The T7350 algo-

rithm never allows the effective setpoint outside Not Occupied setpoints.

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

37 63-2605—5

Dehumidification Reset Temp

Setpt

2° F X Amount of reset used with “Dehumidify Reset”. Range: 1 to 5° F.

Must be smaller than occupied zero energy band (ZEB) or standby ZEB.

Dehumidification Reheat None X X None: No Reheat dehumidification; Enable: Dehumidification using Reheat.

Dehumidification High Limit 65% X XcDehumidification High Limit. Range: 10 to 90%.

Clock Year 1999 X Range: 2000 to 2035.

Clock Month 12 X 1: January… 12: December.

Clock Day Wed X Day of the Week: Sun, Mon, Tue, Wed, Thu, Fri, Sat

Clock Minutes 11:15 p.m.bX X 12:00 a.m.: Midnight (first minute of the day); 12:00 p.m.: Noon.

Holiday Month 0 X Unprogrammed; January…December.

Holiday Day 0 X Unprogrammed; 1; 2…31; LASTDAYOFMONTH…LAST_SAT

Holiday Duration 0 days X Duration of given Holiday (in days). Range: 0 to 99 days.

Delays On X X On: Delays (on relays, sequential start, etc.) are active.

Off: Delays disabled (also called Test Mode).

System Switch Auto X X System settings: Auto; Cool; Off; Heat; Emergency Heat (valid if Heat Pump)

Fan Switch On X X Fan setting: On; Auto

Occupied Heat Setpt Stop 55° F X Occupied Minimum Heat Setpoint: Lowest the programmed occupied heating setpoint

can be adjusted. Range: 40 to 90° F; Value ≤ OccHt ≤ OccCl - 2° F.

Occupied Cool Setpt Stop 85° F X Occupied Maximum Cool Setpoint: Highest the programmed occupied cooling setpoint

can be adjusted. Range: 45 to 99° F. Value ≥ OccCl ≥ OccHt + 2° F.

Not Occupied Heat Setpoint 55° F X X Not Occupied heating setpoint. Range: 40 to 90° F.

UnoccHt ≤ OccHt ≤ OccCl - 2° F; UnoccHt ≤ StdByHt ≤ StdByCl - 2° F

Standby Heat Setpoint 67° F X dStandby heating setpoint. Range: 40 to 90° F.

Occupied Heat Setpoint 70° F X X Occupied heating setpoint. Range: 40 to 90° F.

Occupied Cool Setpoint 75° F X X Occupied cooling setpoint. Range: 45 to 99° F.

Standby Cool Setpoint 78° F X dStandby cooling setpoint. Range: 45 to 99° F.

Not Occupied Cool Setpoint 85° F X X Not Occupied cooling setpoint. Range: 45 to 99° F.

UnoccCl ≥ OccCl ≥ OccHt + 2° F; UnoccCl ≥ StdByCl ≥ StdByHt + 2° F.

Event 1 State Occupied X X Day Schedule is a structure of 8 days of 4 events each day. Defaults listed are for

Monday through Friday. Saturday/Sunday/Holiday default to Unprogrammed (None /

12:00 a.m.). All Events can be set for: Standby or None.

Only Events 1 and 3 can be set for Occupied.

Only Events 2 and 4 can be set for Not Occupied.

Note: The Config ID cannot set an event to Standby, but it can change the time.

Event 2 State Not Occupied X X

Event 3 State None X X

Event 4 State None X X

Event 1 Time 8:00 a.m. X X Scheduled time for event change.

12:00 p.m.: Noon

12:00 a.m.: Midnight

Event 2 Time 10:00 p.m. X X

Event 3 Time 12:00 a.m

(midnight)

Event 4 Time X X

Table 20. Thermostat Setup Options Through PDA. (Continued)

Configuration Option Factory DefaultaPDA

Tool CnfgID Description

aThe Factory defaults listed here apply to all subbase models with the exceptions of the items listed in Table 21.

b12:00 Noon is the default start point when time is unknown.

cOnly Available if user selected one or more of following: Dehumidification Reset, Dehumidification Minimum On, or Dehumidification Reheat.

dConfig ID cannot handle Standby setpoints. Keypad users cannot set Occupied setpoints that violate Not Occupied setpoint relationship. The T7350 algo-

rithm never allows the effective setpoint outside Not Occupied setpoints.

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2605—5 38

Table 21. Exceptions to Factory Defaults.

ZIRE and TUNGSTEN are trademarks of palmOne, Inc.

LonMark®, LonTalk®, Echelon® and LonWorks® are registered trademarks of Echelon Corporation.

Palm OS® is a registered trademark of Palm Computing, Inc.

Palm® is a registered trademark of PalmSource, Inc.

Configuration Option T7350A T7350B

T7350D

T7350H1009

T7350M

T7350H1017

Heat Output Stages 1 2 3 0

Cool Output Stages 1 2 3 0

Room Humidity Sensor None None Local Local

Heat Throttling Range 3 4 7 5

Cool Throttling Range 3 4 7 5

Heat Integral Time 3100 2500 1650 1250

Cool Integral Time 3100 2500 1650 1250

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

39 63-2605—5

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

Automation and Control Solutions

Honeywell International Inc. Honeywell Limited-Honeywell Limitée

1985 Douglas Drive North 35 Dynamic Drive

Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9

customer.honeywell.com

® U.S. Registered Trademark

63-2605—5 J.Z. Rev. 07-07

Honeywell Thermostat T7350 Users Manual 63 2605 Commercial Programmable

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