COLEMAN / EVCON IND. Air Conditioner/heat Pump(outside Unit) Manual L0612125

User Manual: COLEMAN COLEMAN / EVCON IND. Air conditioner/heat pump(outside unit) Manual COLEMAN / EVCON IND. Air conditioner/heat pump(outside unit) Owner's Manual, COLEMAN / EVCON IND. Air conditioner/heat pump(outside unit) installation guides

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R-22
OUTDOOR SPLIT-SYSTEM
HEAT PUMP
ISO 9001
Certified Quality
Management
System

MODELS:
13 SEER

- ERHQ SERIES

2 TO 3-1/2 TONS

TABLE

OF CONTENTS

GENERAL
..............................................
SAFETY ................................................
UNIT INSTALLATION
.....................................

1
1
2

ELECTRICAL CONNECTIONS
..............................
SYSTEM OPERATION .....................................
INSTRUCTING THE OWNER ...............................
WIRING DIAGRAM
......................................

5
6
9
10

LIST OF FIGURES
Outdoor Unit Control Box ...................................

Low Voltage Wiring ........................................
Demand Defrost Control Module .............................

5
6

3
4
4

Defrost Operation Curves ...................................
Heat Pump Flow Diagram ...................................
Wiring Diagram ..........................................

Typical Installation with Required Clearances ...................
Minimum Suction Line Form ................................

2
3

Excess Tubing

...........................................

Insulation of Vapor Line ....................................
Typical Quick Connect Refrigerant Line Set ....................
Quick Connect Coupling Connections .........................

8
9
10

LIST OF TABLES
TEST Input Functionality
...................................
X/L Output Categories .....................................

6
6

Defrost Initiate Curves

GENERAL

Improper installation may create a condition where the operation of
the product could cause personal injury or property damage.
Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage. Refer to this manual
for assistance or for additional information, consult a qualified contractor, installer, or service agency

NOTE: These units are supplied with quick-connect coupling connections that are factory charged with refrigerant to be matched with the
appropriate pre-charged line set, and UPG indoor coil.
The outdoor unit is designed to be placed near the perimeter of the
home, typically alongside or at the back of the home, remote from the
indoor coil. The outdoor unit has been factory run-tested and all components of the system are ready for easy, immediate installation.

CAUTION

SAFETY

This product must be installed in strict compliance
with the
enclosed installation instructions and any applicable local, state,
and national codes including, but not limited to building, electrical,
and mechanical codes.

This
alert symbol.
see thisforsymbol
on
labelsis ora safety
in manuals,
be alert When
to theyoupotential
personal
injury.
attention to the signal words DANGER,

DANGER indicates an imminently
hazardous
avoided will result in death or serious iniurv.

situation, which, if not

WARNING indicates a potentially
hazardous situation, which,
avoided could result in death or serious iniurv.
CAUTION indicates
avoided may result

if not

a potentially hazardous situation, which, if not
in minor or moderate iniurv. It is also used to

alert against unsafe practices and hazards involving only property damage

_WARNING

These outdoor heat pump units are designed to be connected to a
matching UPG indoor coil. They are equipped with a solid core filterdrier located in the discharge line and a high pressure switch.

Understand and pay particular
WARNING, or CAUTION.

....................................

INSPECTION
As soon as a unit is received, it should be inspected for possible damage during transit. If damage is evident, the extent of the damage
should be noted on the carrier's delivery receipt. A separate request for
inspection by the carrier's agent should be made in writing. See Local
Distributor for more information.
LIMITATIONS
The unit should be installed in accordance with all National, State, and
Local Safety Codes and the limitations listed below:
1.

Limitations for the indoor unit, coil, and appropriate
must also be observed.

accessories

157650-UIM-B-1105

157650-UIM-B-1105
2.

The outdoor unit must not be installed with any duct work in the air
stream. The outdoor fan is the propeller type and is not designed
to operate against any additional external static pressure.

UNIT

The maximum and minimum conditions for operation must be
observed to assure a system that will give maximum performance
with minimum service.

Before starting the installation, select and check the suitability of the
location for both the indoor and outdoor unit. Observe all limitations and

AIR TEMPERATURE
OUTDOOR
Min.

AIR TEMPERATURE

DB
Heat

DB
Cool

DB
Heat

WB
Coo!

DB
Heat

WB
Coo!

DB
Heat

-10

1!5

501

Operation below this temperature
time, during morning warm-up.
The maximum

allowable

is permissibIe

line length

clearance requirements.
The outdoor unit must have sufficient clearance for air entrance to the
condenser coil, for air discharge, and for service access. See Figure 1.

INDOOR COIL, °F
Min.
Max.

DB
Cool

COIL, °F
Max.

INSTALLATION

LOCATION

for a short period of

NOTE: For multiple unit installations, units must be spaced a minimum
of !8 inches apart. (Coil face to coil face.)
If the unit is to be installed on a hot sun exposed roof or a black-topped
ground area, the unit should be raised sufficiently above the roof or
ground to avoid taking the accumulated layer of hot air into the outdoor
unit.
Provide an adequate structural support.

for this product

is 75 feet.

MINIMUM 24" SERVICE ACCESS
CLEARANCE ON ONE SIDE

THERMOSTAT

TO FURNACE OR
AIR HANDLER
TERMINAL BLOCK

CLEARANCE
CONTROL

WEATHERPROOF

NEC CLASS 1 WIRING

DISCONNECT
SWITCH

NEC CLASS 2 WIRING

TO INDOOR

COIL

SEAL OPENING(S) WITH
PERMAGUM OR EQUIVALENT
NOTE: ALL OUTDOOR

WIRING

POSSIBLE OUTDOOR THERMOSTAT KIT LOCATIONS
(UNIT MOUNTING NOT AVAILABLE ON ALL MODELS)

FIGURE 1: Typical Installation with Required Clearances
GROUND

INSTALLATION

The unit may be installed at ground level on a solid base that will not
shift or settle, causing strain on the refrigerant lines and possible leaks.
Maintain the clearances shown in Figure 1 and install the unit in a level
position.
Normal operating sound levels may be objectionable if the unit is placed
directly under windows of certain rooms (bedrooms, study, etc.).
Condensate will drain from beneath the coil of the outdoor unit during
the defrost cycle. Normally this condensate may be allowed to drain
directly on the ground.
Elevate the unit sufficiently to prevent any blockage of the air entrances
by snow in areas where there will be snow accumulation. Check the
local weather bureau for the expected snow accumulation in your area.
Isolate the unit from rain gutters to avoid any possible wash out of the
foundation.

UNIT

PLACEMENT

Provide a base in the pre-determined

Remove the shipping carton and inspect for possible damage.

Compressor

Position the unit on the base provided.

tie-down bolts should remain tightened.

NOTE: Heat pumps will defrost periodically resulting in water drainage.
The unit should not be located where water drainage may freeze and
create a hazardous condition - such as sidewalks and steps.
LIQUID

LINE

FILTER-DRIER

The heat pumps have a solid core bi-flow filter/drier located on the liquid
line.
NOTE: Replacements for the fiquid line drier must be exactly the same
as marked on the original factory drie_ See Source 1 for O.E.M.
replacement driers.

CAUTION

kWARNING
The outdoor unit should not be installed in an area where mud or
ice could cause personal injury. Remember that condensate will
drip from the unit coi! during heat and defrost cycles and that this
condensate will freeze when the temperature of the outdoor air is
below 32°t_

location.

Failure to do so or using a substitute
result in damage to the equipment.
Filter-Drier
Source 1 Part No.

drier or a granular

Apply

type may

with Models
13 SEER

19312 / 1458-001

024

20738 / 6536-334

030, 036, 042

*As listed on the "Energy Guide yellow sticker on the unit

Unitary

Products

Group

157650-UIM-B-1105

OUTDOOR
(All
per
the
std.

THERMOSTATS

installations of this heat pump in Manufactured Homes built
HUD standards SHALL have an outdoor thermostat installed at
time of installation bv the installer. In accordance with HUD
3280,714 (al (1_ (ill Outdoor thermostat, Part number 3024-

6881/D shall be used and should be ordered at your nearest UPG
Parts Source). See last page of these instructions. Select the proper
location for mounting the outdoor thermostat (see instructions packed
with outdoor thermostat).
INDOOR

UNITS

Install the indoor coil in the furnace or air handler
installation instructions packed with each component.
REFRIGERANT

according

to the

LINES

FIGURE 3: Excess Tubing

IMPORTANT: Do not remove protective caps from couplings untiI precharged lines are routed and ready for final connection. Protective caps
prevent dirt from entering couplings and contaminating system when
connected together.
1.

Check size and length of pre-charged
installing.

refrigerant

Slope tubing toward outdoor unit.
a.

When the coil is above the outdoor unit, the suction line
should be sloped with a fall of a least 1/4" per foot toward the
outdoor unit.

When the outdoor unit is above the coil, the tubing should be
sloped downward along lateral distance to the bottom, or
from the vertical riser.

lines before

Check the size of the pre-charged refrigerant lines to insure
that they are correct for the model being installed.

Check the final routing of the tubing, and insure tubing will be
of adequate length, with allowance for connection at the coil
and outdoor unit.

The line set part number, size, and length are shown in the tabular data
sheet. Do not use any line sets other than those shown.
2.

Copper tubing will work-harden.
a.

The pre-charged

Do not bend or work the tubing any more than necessary.
(The larger size tubing 3/4" for example, will work-harden
rapidly as it is formed. As the tubing becomes harder, it is
more susceptible to kinking and damage).

tubing should be handled carefully.

insulation of suction line.
a.

Standard suction lines come pre-insulated from the factory
with 3/8" closed ceil insulation, adequate for average installations.

NOTE: In regions of extreme temperatures and humidity, additional
insulation may be required to prevent excessive condensation and serious loss of capacity.
b.

Do not insulate liquid and suction lines together.

Liquid lines should not be insulated.

Liquid lines should not be in bare contact with suction line.
See Figure 4.

Forming Copper.
a.

Sheet Metal Hanger

No attempt should be made to bend the suction line in a
shorter radius than 12". See Figure 2.

Incorrect

1!"
0 Center

Point

Insulated Vapor Line
FIGURE 4: Insulation of Vapor Line
FIGURE 2: Minimum Suction Line Form
4.

AWARNING

How to dispose of excess tubing.
a.
b.

Unitary

Tubing may be longer than required. Coil excess
nearer the indoor coil rather than the outdoor unit.

tubing

Excess tubing must be coiled horizontally so the flow of
refrigerant is from top to bottom d the coil and toward the
outdoor unit. Another method is to form a horizontal "U" large
enough to take care of excess. See Figure 3.

Products

Group

Liquid refrigerant under pressure. Liquid refrigerant can cause
severe frostbite. To avoid possible loss of sight and/or frostbite
use eye protection (safety glasses or safety face shield). Wearing
leather gloves will offer protection to hands.

157650-UIM-B-1105

Install refrigerant lines to indoor coil first. (The couplings without
Schrader Valves are to be connected to the indoor coil. See Figure
5).
a.

Form the tubing so it is properly aligned with the connections
on the coil.

Remove plugs and caps from connections.

Check that the rubber seals in connection

Be sure surfaces are clean.

Lubricate the rubber seals with clean refrigerant
connections.

Thread couplings together by hand to be sure they are not
cross threaded. Tighten coupling so diaphragms are touching. (Do not puncture diaphragms at this time).

_'--

BACK UP

ends are intact.

oil and make
TIGHTEN

FIRST CONNECTION
TO INDOOR COIL
SECOND

FIGURE 6: Quick Connect Coupling Connections

CONNECTION

10.

Check for leaks.
a.

After the line set connections
be checked for leaks.

If the valves were kept clean and lubricated per instruction
leaks should be found.

Use leak detect solution or soap solution for leak testing. An
electronic leak detector is recommended.

REFRIGERANT

FIGURE 6: Typical Quick Connect Refrigerant
8.

Form the tubing so it is properly aligned with the connections
on the outdoor unit. Insure the Schrader Valves are accessible.

Check that the rubber seals in connection

Be sure surfaces are clean.

Lubricate the rubber seals with clean refrigerant
connections.

Thread couplings together by hand to be sure they are not
cross threaded. Tighten coupling so diaphragms are touching. (Do not puncture diaphragms at this time).

ends are intact.

SUPPORT

Refrigerant lines should be supported in a way that no dips or sags
occur. We recommend four feet between supports, If refrigerant lines
are to be attached to the home structure, care should be taken to eliminate the transmission of vibrations, Attach the refrigerant lines to the
indoor coil first. Remove plugs from the indoor coil, then clean joints to
be brazed. Braze refrigerant lines to the indoor coil. Attach refrigerant
lines to the outdoor unit.
CHARGING

AND

LEAK

TESTING

On systems with or without service valves the refrigerant should be
recovered or recycled in accordance with EPA regulations. In some
cases this may require putting piercing valves on both the high and low
sides of the system.

oil and make

Tightening couplings.
a.

Line Set

Install refrigerant line to outdoor unit. (The couplings with Schrader
Valves are to be connected to the outdoor unit.

LINE

have been made they should

Tighten indoor coil couplings with wrenches; using wrench on
stationary fitting of coupling and liquid line fitting at coil while
nut is being tightened. See Figure 6. Tighten the nut until the
coupling bottoms out.

Then tighten an additional
seal.

Tighten outdoor unit couplings, with wrenches using a
wrench on the stationary fitting of the coupling while nut is
being tightened. Tighten the nut until the coupling bottoms
out.

Then tighten an additional
seat.

AWARNING
DO NOT vent refrigerant to the outdoors.
When recovering refrigerant from a system, with a burnout, follow a
safe procedure due to possible contamination.

CAUTION]
Avoid gettingtherefrigerant
intheeyes oron theskin.

1/6 turn to complete the knife edge
Contaminated refrigerant must be recovered and returned to the local
refrigeration supply house for proper disposition.

1/6 turn to complete the knife edge

Unitary

Products

Group

157650-UIM-B-1105

ELECTRICAL
GENERAL

CONNECTIONS

INFORMATION

HEATER LIMIT SWITCH
(Not on att Units

& GROUNDING

/ CONTACTOR

_:'_

Check the electrical supply to be sure that it meets the values specified
on the unit nameplate and wiring label.
(Not

Power wiring, control (low voltage) wiring, disconnect switches and over
current protection must be supplied by the installer. Wire size should be
sized per NEC requirements.

_-":'_.Y_'-_

DEFROST

on ait Units

DUAL
RUN/FAN
CAPACITOR

CAUTION
All field wiring
in accordance
This unit must
dance with the

CAPACITOR
(Not on aIt Units)

must USE COPPER CONDUCTORS ONLY and be
with Local, National, Fire, Safety & Electrical Codes.
be grounded with a separate ground wire in accorabove codes.

%qA* --b°wAGE
Box

-jo

/
\
REVERSIBLE HIGH
VOLTAGE CONDUIT PLATE

The complete connection diagram and schematic wiring label is located
on the inside surface of the unit service access panel.

FIGURE 7: Outdoor Unit Control Box

FIELD

1.
2.

CONNECTIONS

POWER

WIRING

Install the proper size weatherproof disconnect switch outdoors
and within sight of the unit.
Remove the screws from the control box cover and remove from
unit.

Run power wiring from the disconnect

Route wires from disconnect through power wiring opening
vided and into the unit control box as shown in Figure 7.

pro-

Install the proper size time-delay fuses
make the power supply connections.

and

breaker,

CONTROL

WIRING

Route low voltage wiring into bottom of control box as shown in
Figure 7. Make low voltage wiring connections inside the low voltage box per Figure 8.

The complete connection diagram and schematic wiring label is
located on the inside surface of the unit service access panel.

switch to the unit.

or circuit

CONNECTIONS

"FINGERED"
BUSHING

Replace the control box cover removed in Step 2.

All field wiring to be in accordance
(NEC) and/or loca!-city codes.

Mount the thermostat about 5 ft. above the floor, where it will be
exposed to normal room air circulation. Do not place it on an outside wall or where it is exposed to the radiant effect from exposed
glass or appliances, drafts from outside doors or supply air grilles.

Route the 24-volt control wiring (NEC Class 2) from the outdoor
unit to the indoor unit and thermostat.

with national electrical codes

NOTE: To eliminate erratic operation, seal the hole in the wall at the
thermostat with permagum or equivalent to prevent air drafts affecting
the operation of in the thermostat.
NOTE: A Start Assist Kit is available and recommended for long line set
applications or in areas of known low voltage problems.

ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES
THERMOSTAT

INDOOR UNIT
LOW

VOLTAGE

TERMINAL

OUTDOOR UNIT

BLOCK

3,4

IN AIR HANDLER WITH ELECTRIC HEAT

DEFROST
CONTROL

BLK
CONTACTOR

YEL

ORG
_ _ _

-r-

BRN
.

GND
SCREW

PUR

FIELD

INSTALLED
JUMPER

DEHUMtDtFtCATION
1 JUMPER
TERMINALS
E AND W TO HEAT
ON FIRST STAGE
DURING
EMERGENCY
2 TERMINAL

NOT

USED

(Humidistat*

Jumper

CONTROL CON ECTION
must

be removed)

HEAT
GND
LUG

ON ALL THERMOSTATS

POWER
WtRING
208/230-1-60

,llF-C::2aPOWER

(NEC

230-1-50

WIRING

24V CONTROL
CLASS

WIRING
2)

3 CHECK

THE

4 CONNECT
5 GRAY

FOR

LOW

VOLTAGE

POWER

WIRING

USE WITH

TERMINAL

BLOCK

TO TERMINAL

OPTIONAL

OUTDOOR

ON THE

BLOCK

INDOOR

3TB ON

THERMOSTAT

UNITS

UNIT

FOR

WITHOUT

THE

ACTUAL

ELECTRIC

ARRANGEMENT
HEAT

CIRCUIT

OF THE

TERMINALS

BREAKER

KITS

FIGURE 8: Low Voltage Wiring

Unitary

Products

Group

157650-UIM-B-1105

SYSTEM

OPERATION

ANTI-SHORT

CYCLE

TEST

DELAY

The control includes a five-minute anti-short cycle delay (ASCD) timer
to prevent the compressor from short cycling after a power or thermostat signal interruption. The ASCD timer is applied when the control is
first powered from the indoor unit thermostat and immediately following
the completion of a compressor run cycle. The compressor and the outdoor fan will not operate during the five minutes that the timer is active.
The ASCD timer can be bypassed by connecting the TEST terminals
for three seconds while the thermostat is calling for compressor operation (Y input signal energized).
LOW

VOLTAGE

INPUT

The controI includes a TEST input connector that can be used for various testing functions during installation and service. The TEST input
connector is shown in Figure 9. The following table summarizes the
behavior of the control when the two TEST pins are connected. More
detailed descriptions of the various functions are included in other sections of this document.

DEMAND
DEFROST CURVE j
SELECTION JUMPER

DETECTION

The control monitors the transformer secondary (24 VAC) voltage and
provides low voltage protection for the heat pump and its components.
In particular, the control prevents contactor chatter during low voltage
conditions. If the voltage drops below approximately 19 VAC, the control will continue to energize any relays that are already energized but
will not energize any additional relays until the voltage level increases.
If the voltage drops below approximately 16 VAC, the control will immediately de-energize the relay outputs and will not energize any relays
until the voltage level increases.

FIGURE 9: Demand Defrost Control Module
TABLE 1: TEST Input Functionality
Duration of connection

(seconds)

Control

behavior

Less than 2

No response

2-6

Bypass ASCD. If Y is present and pressure switch is
closed, centactors will be energized.
Clear lockout

More than 6
Connection
Connection
FAULT

CODE

Initiate defrost cycle ignoring the liquid line and outdoor ambient temp.
Energize X/L with active defrost curve flash code

removed
not removed

Terminate defrost as normal.
Continue defrost cycle and X/L flash code until TEST connection

DISPLAY

The control regulates the defrost operation of the heat pump.
•

X/L Output
The X/L terminal of the heat pump control is typically connected to the
X/L input of the room thermostat. The thermostat uses this signal to
notify the homeowner d a problem with the heat pump using an LED or
LCD display. When the control energizes the X/L terminal, the thermostat displays the flash code so the homeowner can see it.
TABLE 2: X/L Output Categories
Condition Switch lockout - last mode of operation was heating
Pressure

X/_

Pressure Switch lockout - last mode of operation was defrost 13 flashes I
When the control locks out the compressor because of a pressure
switch lockout, it will energize the X/L output as shown in Table 2. The
control has a three second delay between fault code flashes.
DEFROST

OPERATION

General
The control maintains proper airflow through the outdoor coil during
heating operation by melting frost and ice that may form on the coil.
Frost may accumulate unevenly in different sections of the coil because
of the arrangement of the refrigeration circuit within the coil. The control
may initiate a defrost cycle even when the coil is not completely covered with frost. This is normal operation.

removed.

Defrost is based on accumulated compressor run time, outdoor
coil termperature, and ourdoor ambient temperature.

The control will cause the unit to operate in the normal heating mode
until it determines that a defrost cycle is needed.
All defrost timings are based on accumulated

compressor

run time.

Operation
The defrost mode is equivalent to the cooling mode except that the outdoor fan motor is de-energized The control shall de the following to initiate a defrost cycle.
•

De-energize the outdoor fan

•

Energize the reversing valve

•

Energize the auxiliary heat output through the W!/66 terminal.

•

Begin the maximum defrost cycle length timer

If the call for heating (Y) is removed from the control during the defrost
cycle, it will terminate the defrost cycle and de-energize the compressor. The control will also stop the defrost cycle length timer but not reset
it. When the control receives another call for heating, it will restart the
defrost cycle and the timer at the point at which the call for heating was
removed. This will happen only if the liquid line temperature conditions
allow defrost to occur.

Unitary

Products

Group

157650-UIM-B-1105

Defrost

Curves

The control uses a set of defrost curve parameters that are selected
using the defrost curve selection jumper. The location of the defrost
curve selection jumper is shown in Figures 10. Table 3 shows the
jumper position that is appropriate for each heat pump model. Jumper
position 4 is not used and the control will not allow the compressor to
operate when the jumper is in this position.
Defrost

Curve

Selection

The factory activates the correct defrost curve during production. They
will place the defrost curve selection jumper in the P position or in a
numbered position appropriate for the specific heat pump model. You
should not have to change the defrost curve selection jumper during initial installation.
If the jumper is inadvertently moved, it should be placed in the appropriate numbered location based on the model number and Table 3. If the
factory has activated the curve using the P position, the jumper may
also be returned to that position. If, however, the factory has not activated the curve in the P position and the jumper is placed in the P position, the control will not energize the compressor. The control will also
not energize the compressor if the defrost curve selection jumper is in a
numbered position that is not described in Table 3 or if the defrost curve
selection jumper is missing. The control will display the proper fault
code when a defrost curve jumper error is present. If the jumper is missing, the control will behave as if the jumper was in the P position. If the
jumper is placed in a numbered position, the defrost curve selected by
the jumper will override the defrost curve activated at the factory until
the jumper is returned to the P position. The control will display the
active defrost curve using the X/L terminal when the heat pump is operating in a defrost cycle that has been forced using the TEST inputs.
It will also display the active defrost curve using the X/L terminal when
the operational mode is being displayed using the LED_s. For instance,
the X/L output will be energized with two flashes when defrost curve 2 is
active. The control only reads the jumper input when the Y and W thermostat inputs are de-energized. If a jumper position is changed while
either of these inputs is energized, the control will not act upon the
jumper changes until the thermostat calls are de-energized or power
(24 VAC) to the control is cycled.
Defrost

Cycle

Initiation

The control will allow the heat pump to operate in the heating mode until
the combination of outdoor ambient and outdoor coil temperatures indicate that a defrost cycle is necessary.

The control will initiate a defrost cycle every 6 hours (accumulated compressor run time) to recirculate refrigerant lubricants. This forced
defrost timer will be reset and restarted following the completion or termination of a defrost cycle.
The control wilI also initiate a defrost cycle when the TEST terminals
are shorted. This feature allows an installer or service technician to start
a defrost cycle immediately as required. When the TEST terminals are
shorted for more than six seconds with a Y input energized and the
pressure switch input is closed, the ASCD will be bypassed and the
compressor and the Wl/66 terminal to auxiliary heat will be energized.
When the TEST inputs are used to force a defrost cycle, the control will
ignore the state of the liquid line temperature and outdoor ambient temperature inputs. The coil does not have to be cold and the outdoor temperature does not have to be within a certain range for the heat pump to
be forced into a defrost cycle. After the TEST input jumper is removed,
the defrost mode will be terminated as normal. The defrost cycle length
timer will not be started until the TEST input is removed. If the TEST terminals remain shorted, the control will keep the unit in defrost mode.
Defrost

Inhibition

The control will not initiate a defrost cycle if the liquid line temperature
above 40F unless the defrost cycle is forced using the TEST input.

The control will not initiate a defrost cycle when the outdoor ambient
temperature is below -25F or above 55F unless the defrost cycle is
forced using the TEST input.
The control will also prevent a defrost cycle from being initiated too
soon after the initiation of the previous defrost cycle. When power is
applied to the control and after the completion or termination of each
defrost cycle, the control will start a 40-minute timer. When this timer
expires, the control will allow another defrost cycle when needed. The
timer is based on accumulated compressor run time.
Defrost

Termination

The control will terminate the defrost cycle immediately after the liquid
line temperature reaches 80F or after eight minutes of defrost operation.
The control will do the following to terminate a defrost cycle.
•

Energize the outdoor fan

•

De-energize the reversing valve

•
•

De-energize the auxiliary heat output through the Wl/66
Reset and restart the 40-minute defrost inhibit timer

terminal

The control will initiate a defrost cycle when the liquid line temperature
is below the initiate point for the measured ambient temperature (See
Figure 10) continuously for 4-1/2 minutes. This delay eliminates unnecessary defrost cycles caused by refrigeration surges such as those that
occur at the start of a heating cycle.
TABLE 3: Defrost Initiate Curves

_Curve

Unitary

Selection Jumper Position

Products

Group

1
All

2
None

1
T

None

157650-UIM-B-1105

REGION
C
DefrostTerminated

TERMINATE CURVE
/

D
c

REGION
No callforEdefrost
z
rl]

TimeDefrost(6

hour)

/_ERE
_"

prevented

GtON D

Defrost

prevented

from

startin 9

INHIBIT CURVE

-4
133
q3
rn

;;o

REGION B
TNi°ca_:_rroDtl6°_tur)

REGIONA

a,lowed_/

Ca,I for Defrost

c
;o
rl]

AMBIENT

FIGURE 10: Defrost Operation
COOLING

Curves
cause a soft lockout condition.

OPERATION

During cooling operation, the control will receive thermostat signals at
the Y and O input terminals. The control will energize the M compressor
output terminal. This signal energizes the coil of the compressor contactor causing the compressor to run. The control also delivers power to
the COND FAN terminals causing the outdoor fan to operate, The control energizes the REV VALVE terminal with 24VAC to switch the
reversing valve.
HEATING

HEAT

SWITCH

FAULT

& LOCKOUT

The heat pump is equipped with a pressure switch and an optional low
pressure switch that are connected to the control at the pressure switch
terminals. If the pressure switch input opens for more than 40 milliseconds, the control will de-energize the compressor. If the pressure switch
closes and a thermostat call for compressor operation is present, the
control will apply the five-minute anti-short cycle delay timer and start
the compressor when the timer expires.
When the compressor is started following a pressure switch fault, the
control will start a six-hour timer based on accumulated compressor run
time. If the control senses another opening of the pressure switch
before the timer expires, it will cause a soft lockout condition. The second opening of the pressure switch must be greater than 160 milliseconds for the lockout to occur. If the second opening is between 40 and
160 milliseconds, the control will de-energize the compressor but not

During the soft lockout mode, the control will de-energize the compressor and energize the X/L output with the appropriate flash code.
The control will reset the soft lockout condition when any of the following occur following removal of the fault condition.
1.

Power is cycled to the R or Y inputs of the control. This will cause
the soft lockout condition to be reset when the thermostat is satisfied or when the thermostat is set to SYSTEM OFF and back to
HEAT or COOL mode.

The TEST terminals are shorted for more than two seconds.

When the soft lockout condition is reset, the control will stop displaying
the fault code and will respond to thermostat inputs normally.
INDICATIONS

PROPER

OPERATION

Cooling

When the thermostat calls for emergency heat operation (W signal without a Y signal), the control will de-energize the compressor and energize the W1/66 terminal immediately.
PRESSURE

If the control does not sense a second

pressure switch opening before the six-hour timer expires, the timer and
counter will be reset.

OPERATION

During normal heating mode, the control will receive a thermostat signal
at the Y input terminal. The control will energize the M compressor output terminal. This signal energizes the coil of the compressor contactor
causing the compressor to run. The control also delivers power to the
COND FAN terminals causing the outdoor fan to operate. The reversing
valve is not energized in heating mode.
EMERGENCY

TEMPERATURE

Cooling operation is the same as any conventional

air conditioning

unit.

The outdoor fan should be running,
charged from the top of the unit.

with warm air being dis-

The indoor btower (furnace or air handier) will be operating, discharging cool air from the ducts. Coils or other parts in the air circuit should be cIeaned as often as necessary to keep the unit
clean. Use a brush, vacuum cleaner attachment, or other suitable
means.

The vapor line at the outdoor unit will feel coo! to the touch.

The liquid line at the outdoor unit will feel warm to the touch.

Heating
Indications of proper Heating operation is as follows:
1.

The outdoor fan should be running, with cool air being discharged
from the top of the unit.

The indoor blower (furnace or air handler) will be operating,
charging warm air from the ducts.

The vapor line at the outdoor unit will feel warm to the touch.

The liquid line at the outdoor unit will feel coot to the touch.

Unitary

Products

dis-

Group

157650-UIM-B-1105

CHARGE
(Empty
OUTDOOR
COIL

COMPENSATOR

h_cooling/full

FIELD CONNECTED

in heating)

5--

_[_

LINE

INDOOR

COIL

4t_

4-WAY

/_"

REVERSING
VALVE

\
SUCTION

I--

COMPRESSOR

TXV/CHECK
VALVE OR ORIFICE
--4_
--

COOLING
--_"

CYCLE

HEATING

CYCLE

FLOW
FLOW

(Heating)

SHOWN

IN COOLING

POSITION.

** NOTE:

The indoor

coil is shipped

VALVE (Cooling)**

FIELD CONNECTED
with

an orifice.

The orifice

LINE

must be replaced

with

a TXV Kit.

FIGURE 11: Heat Pump Flow Diagram

INSTRUCTING

THE

Assist owner with processing

OWNER

Review Owners Guide and provide a copy to the owner and guidance
on proper operation and maintenance. Instruct the owner or the operator how to start, stop and adjust temperature setting.
When applicable,

instruct the owner that the compressor

ods of shut down, do not attempt to start the unit until 8 hours after the
switch has been connected. This will allow sufficient time for all liquid
refrigerant to be driven out of the compressor.
The installer should also instruct the owner on proper operation and

Dirt should not be allowed to accumulate

on the outdoor

coils or

other parts in the air circuit. Clean as often as necessary to keep
the unit clean. Use a brush, vacuum cleaner attachment, or other
suitable means.

Unitary

If the coil needs to be cleaned, it should be washed with Calgon
Coilclean (mix one part CoilcIean to seven parts water). Allow
solution to remain on coil for 30 minutes before rinsing with clean
water. Solution should not be permitted to come in contact with
painted surfaces.
Refer to the furnace or air handler instructions for filter and blower
motor maintenance.

4.
5.

lubricated

and does not

The indoor coil and drain pan should be inspected and cleaned
regularly to prevent odors and assure proper drainage.

CAUTION

of all other system components.

MAINTENANCE
1.

The outdoor fan motor is permanently
require periodic oiling.

is equipped

with a crankcase heater to prevent the migration of refrigerant to the
compressor during the "OFF" cycle. The heater is energized only when
the unit is not running. If the main switch is disconnected for long peri-

maintenance

warranty cards and/or online registration.

Products

Group

IT IS UNLAWFUL TO KNOWINGLY VENT, RELEASE OR DISCHARGE
REFRIGERANT
INTO THE OPEN AIR DURING
REPAIR, SERWCE, MAINTENANCE
OR THE FINAL DISPOSAL
OF THIS UNIT
WHEN THE SYSTEM IS FUNCTIONING PROPERLY AND THE
OWNER HAS BEEN FULLY INSTRUCTED,
SECURE
THE
OWNER'S APPROVAL.

157650-UIM-B-1105

WIRING

DIAGRAM

f
LEGEND

COLORCODE

AMBIENT SENSOR

CAP
CC

CAPACITOR
CONTACTOR COIL

CCH
HPS

CRANKCASE HEATER
HIGH PRESS SWITCH

HEATER SWITCH

LS
LPS

LIQUID SENSOR
LOW PRESS SWITCH

RV
SC

REVERSING VALVE
START CAPACITOR

START RELAY

BLK - BLACK
BLU - BLUE
BRN - BROWN
BRNIWHTBROWNIWHITE
GRN
GREEN
GRY
GREY
ORD
ORANGE
PUR
PURPLE
RED
RED
WHT
WHITE
YEL
YELLOW

DANGER- SHOCKHAZARD
TURN OFF ELECTRICAL
POWER BEFORE SERVICING
TO PREVENT POSSIBLE DAMAGE TO THE EQUIPMENT
AND POSSIBLE PERSONAL
INJURY.

CAUTION
TO PREVENT ELECTRICAL
SHOCK OPEN REMOTE
DISCONNECT
SO ELECTRICAL
SUPPLY TO HEAT
PUMP IS SHUT OFF.

(__OCOMPONENTB
SHOWN
ARE OPTIONAL,
DUAL CAPACITOR
_"_CAPACITORS
MAY
--UNIT.

IN DASH

SHOWN.
BE USED

LINES

SEPARATE
ON ACTUAL

FAN MOTOR
(_)WIRING
TO
NATIONALMUST
AND CONFORM
LOCAL CODES.
RED
IF ANY OF THE ORIGINAL
WIRE SUPPLIED
WITH THIS UNIT MUST BE REPLACED.
IT
(_)NUST
BE REPLACED WITH 105° C
THERMOPLASTIC
OR ITS EQUIVALENT.
WHERE

POWER

SUPPLY

(_)VOLT
CONDUCTOR
AND
CONDUCTOR.
CONNECT
TO NEUTRAL.

%IJPLUG

HAS

ONE

({)

240

ONE (1) NEUTRAL
L2 OF CONTACTOR

HIGH VOLTAGE FACTORY WIRING 1
LOW VOLTAGE FACTORY WIRING|
OPTIONAL
-- -- --

FIELD

WIRING

WIRING,

LINE

VOLTAGE|

AS
WHT

C2C]-DEEN0ST
CZC]-BLK

CONTROL

YEL

HPS

BLK

BLK
RV

RED

CONTACTOR

I
I

I
\

I
USE COPPER
CONDUCTORS

ONLY
Y

I
2

208-230
VAC BO Hz
I PHASE SUPPLY

SEE UNIT INSTALLATION
INSTRUCTIONS
FOR LOW VOLTAGE TERMINATIONS

IBSBSO-UWD-A-OBOS
J

FIGURE 12: Wiring Diagram

Unitary

Products

Group

157650-UIM-B-1105

NOTES

Unitary

Products

Group

Subject
tochange
without
notice.
Printed
inU.S.A.
Copyright
_ byYorkInternational
Corp.
2005.
Allrights
reserved.
Unitary
Product
Group

157650-UIM-B-1
Supersedes:

5005
York
Drive

!05

157650-UIM-A-0905
Norman
OK
73069

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Producer                        : Goby Monitor Application version 3, 2, 1, 4
Create Date                     : Fri Apr 20 15:52:29 2007
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Title                           : 
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COLEMAN / EVCON IND. Air Conditioner/heat Pump(outside Unit) Manual L0612125

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