Retro Aire CM, WM, CW, CM Series, CW Series Installation, Operation & Maintenance Manual
...
CM / CW / WM
R-410A High Effi ciency Water Source Heat Pump
MODEL CM - Heat Pump Nominal Capacities
8,000 12,000 15,000 Btuh
™
2.3 3.5 4.4 kW
e Right Fit for Comfort
MODEL CW - Straight Cooling / Heat Pump
Nominal Capacities
8,000 10,000 13,000 17,000 Btuh
2.3 2.9 3.8 5.0 kW
MODEL WM - Heat Pump Nominal
Capacities
9,000 12,000 15,000 Btuh
2.6 3.5 4.4 kW
Installation, Operation,
& Maintenance Manual
ECR International Inc
2201 Dwyer Avenue
Utica, NY 13501
e-mail: info@RetroAire.com
An ISO 9001-2008 Certifi ed Company
CM
Replacement for:
Freidrich and Climate Master
"801" Series Water Source
WM
Replacement for:
McQuay, Singer, or Climate
Control WM Series Water
Source
P/N 240009719, Rev. A [07/2012]
CW
New Construction
Replacement for:
Freidrich and Climate Master
CW and "800" Series Water
Source
TABLE OF CONTENTS
Table Of Contents ........................................................................................................... 2
Receiving Information ..................................................................................................... 3
Important Safety Information ........................................................................................... 4
Dimensional/Physical Data ............................................................................................... 5
Product Description ......................................................................................................... 9
General Product Information .......................................................................................... 11
Installation Preparation ................................................................................................. 12
Installation .................................................................................................................. 13
Final Inspection And Start-Up ......................................................................................... 14
Sequence Of Operation.................................................................................................. 17
Maintenance ............................................................................................................... 19
Performance Data CM / CW / WM ** ............................................................................... 21
Electrical Specifi cations ................................................................................................. 22
Information and specifi cations outlined in this manual in effect at the
time of printing of this manual. ECR International reserves the right to
discontinue, change specifi cations or system design at any time without
The Right Fit for Comfort 2 Made in USA
notice and without incurring any obligation, whatsoever.
RECEIVING INFORMATION
Shipping damage MUST be reported to the carrier IMMEDIATELY.
Examine exterior.
Remove cover and examine compressor and piping for signs of damage.
Inspection
Check shipment against bill of lading.
Verify equipment received as ordered.
Verify unit:
• Unit size and type correct per submittal sheet and
job requirements?
• Voltage correct?
• Correct Chassis has been received (with options as
ordered)?
• Electric heat correct capacity, if used?
• Hydronic coil included, if required? Piping located
as required?
Inspect each component for damage. Concealed
damage must be reported to carrier within 15 days
of receipt of shipment.
Carrier must make proper notation on delivery
receipt of all damage identifi ed and complete carrier
inspection report.
Purchaser must notify Manufacturer’s Service
department of all damage and is responsible for fi ling
any necessary claims with carrier.
General Information
Installation shall be completed by qualifi ed agency.
this manual and warranty for future reference.
Installer review this manual to verify unit has been
installed correctly. Run unit for one complete cycle to
verify proper function.
To obtain technical service or warranty assistance
during or after installation, contact your local
representative.
Visit our web site www.retroaire.com for local
representative listing.
For further assistance call 1-800-325-5479.
When calling for assistance, please have following
information ready:
Model Number_________________________
Serial Number_________________________
Date of installation______________________
Retain
Customer Service : (800) 228-9364
The Right Fit for Comfort 3 Made in USA
ot workin
IMPORTANT SAFETY INFORMATION
Become Familiar With Symbols
Identifying Potential Hazards.
!
!
All wiring should be in accordance the National Electric
Code (NEC) and or in absence of such code requirements of
the authority having jurisdiction.
Become Familiar With Symbols
Identifying Potential Hazards.
!
DANGER
Indicates a hazardous situation which, if not
avoided, WILL result in death or serious injury.
!
WARNING
Indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
Fire, and electrical shock hazard. Improper
installation could result in death or serious injury.
Read this manual and understand all requirements
before beginning installation.
Tampering is dangerous and could result in death or
serious injury. Do not modify or change this unit.
Chassis is heavy to avoid injury use assistance when
lifting. Failure to follow these instructions could
result in minor or moderate injury.
Safety Information
• Use this unit for its for intended use only.
!
WARNING
!
WARNING
!
CAUTION
!
CAUTION
Indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
NOTICE
Indicates information which should be followed to
ensure proper installation and operation.
• Installation by qualifi ed personnel.
• Turn off electrical supply before servicing unit.
• Inspect all parts for damage prior to installation and
start-up.
• Do not use unit if it has damaged wiring, is n
properly, or has been damaged or dropped.
• Connect to properly grounded electrical supply with
proper voltage as stated on rating plate.
• Have proper over-current protection (i.e. time- delay
fuse/HACR Breaker) as listed on Rating Plate.
• Connect unit to properly grounded electrical supply. Do
not fail to properly ground this unit.
• Tampering voids all warranties.
ot working
The Right Fit for Comfort 4 Made in USA
Figure 1 - CM Chassis
J Box
High Volt
Connections
DIMENSIONAL/PHYSICAL DATA
TOP
FRONT
Rating
Plate
Wire Diagram
Water Coil
Connections
H2O IN
H2O OUT
5/8" ID Tube Condensate
Drain Connection
The Right Fit for Comfort 5 Made in USA
Figure 2 - CW Chassis
J Box
High Volt
Connections
DIMENSIONAL/PHYSICAL DATA
TOP
FRONT
Rating Plate
Wire Diagram
Water Coil
Connections
The Right Fit for Comfort 6 Made in USA
5/8" ID tube Condensate
Drain Connection
Figure 3 - WM Chassis
Rating
Plate
DIMENSIONAL/PHYSICAL DATA
TOP
FRONT
Wire Diagram
J Box
High Volt
Connections
Water Coil
Connections
5/8" OD Pipe
Condensate
Drain Connection
Install 2" x " foam tape
The Right Fit for Comfort 7 Made in USA
DIMENSIONAL/PHYSICAL DATA
Figure 4 - WM Right Chassis And Installation Kit Contents
TOP
FRONT
J Box
High Volt
Connections
Wire Diagram
Rating Plate
Water Coil
Connections
The Right Fit for Comfort 8 Made in USA
5/8" OD Pipe
Condensate
Drain
Connection
Figure 5 - CM Chassis
PRODUCT DESCRIPTION
High Volt
Connection
CONDITIONED AIR
System Switch (SS)
Figure 6 - CW Chassis
Thermostat
Fan Speed Switch (FSS)
Master
Slave
Optional
Rating Plate
H20
IN
Wire Diagram
H20
OUT
INLET AIR
Thermostat
Fan Speed Switch (FSS)
System Switch (SS)
Low Volt Program Relay
High Volt
Connection
Optional
CONDITIONED AIR
Rating Plate
H20
IN
Wire Diagram
H20
OUT
INLET AIR
The Right Fit for Comfort 9 Made in USA
Figure 7 - WM Chassis (Left)
H20
IN
CONDITIONED AIR
H20
OUT
Rating
Plate
Wire
Diagram
Filter
INLET AIR
PRODUCT DESCRIPTION
SYSTEM SWITCH (SS)
FAN SPEED SWITCH (FSS)
THERMOSTAT
Figure 8 - WM Chassis (Right)
THERMOSTAT
FAN SPEED SWITCH (FSS)
SYSTEM SWITCH (SS)
Wire
Diagram
INLET AIR
CONDITIONED AIR
Rating
Plate
Filter
H20
IN
High Volt
Connection
H20
OUT
CONDENSATE
DRAIN STUB
The Right Fit for Comfort 10 Made in USA
GENERAL PRODUCT INFORMATION
Product Description
• Water Source Console units are available as heat pump
systems. Model CW is available as straight cool.
• R-410A refrigerant.
• Provided high-effi ciency rotary compressor.
• Provided enhanced high-effi ciency heat exchanger.
• Two fan speeds.
• Energy Effi ciency Rating(EER) in excess of 12.
• Coeffi cient of performance(COP) in excess of 4 for (heat
pump models only)
• Field-Installed Accessories:
Optional Wall-Mounted Thermostats:
EMI thermostats.
Standard Controls And Components:
• Construction
– 20-gauge galvanized steel Water Source Console
Units construction of chassis.
– Powder-coated evaporator drain pan.
– Foam strip seal for supply air duct.
• Air Systems
– Indoor fan motor is thermally-protected PSC type.
– Air-stream surfaces are insulated with ⅛” fi ber-
glass or ¼” (3.2 mm) Volara™.
– Indoor fan is forward curved type, directly
mounted to motor shaft.
Alternate Manufacturer Thermostat
• Controls
– Unit-mounted operating controls include
thermostat, fan speed control and heat/cool
switch.
– Remote mount controls include fan speed
control.
– High pressure switch.
– Low Temperature/Low water fl ow cut out switch
compressor lock out relay
– 4-Way reversing valve with solenoid activated
by line voltage. Solenoid is energized for cooling
mode. (Heat pump models only).
– Remote thermostat
– Hydronic heat valves
– Cabinets
– Single stage, cool/heat, thermostat that can be
used in all RetroAire cooling, heating or heat pump
applications.
– Thermostat has adjustable setpoint range of
between 45°F (7°C) and 90°F (32°C).
– Heat pump option is a 2 stage heat/cool thermostat
which allows for emergency heat.
– Choose a single stage heat/cool, 24v thermostat.
– Straight cooling with electric heat or hydronic
heat. Select a thermostat compatible with cooling/
electric heat system. Thermostat should have “R”,
“Y”, “W” and “G” terminals.
– Heat pump, select a thermostat compatible with
cooling/single-stage heat/heat pump system.
Thermostat should have “R”, “Y”, “O” and “G”
terminals. RetroAire units are single stage heating only.
The Right Fit for Comfort 11 Made in USA
INSTALLATION PREPARATION
!
DANGER
Electrical shock hazard. Before opening existing
unit open power supply disconnect switch. Secure
in open position during installation. Attach a sign
stating, “DO NOT TURN ON.”
Unplug existing unit at wall outlet. DO NOT plug in
new unit until installation is complete and start-up
checklist has been completed. Failure to do so will
result in death or severe personal injury.
!
WARNING
Moving parts can cause personal injury. Avoid
contact with moving parts when testing or servicing
the unit.
Chassis and Grills
• Secure existing front panels with screws that prevent
contact with all parts.
• Minor dimensions of openings must not exceed ½ inch
(12.5mm).
Remove Old Chassis
• Disconnect power or unplug cord before proceeding.
• Remove cabinet from old chassis.
• Disconnect water supply to coil.
• Disconnect condensate drain piping
• Remove any fasteners holding old chassis to sub base or
wall and remove chassis.
NOTICE
Dispose of old chassis following existing state and
federal regulations.
• Dimensions of indoor air discharge grill must not be less
than 26” x 4”. Grill must separate top surface of chassis
from top surface of discharge grill by minimum of 1 in
(25.4mm).
Electrical Supply
• Each unit must have separate branch circuit protected
by a fuse or breaker. Refer to rating plate for proper
wire and breaker or fuse size.
• Use of extension cords is prohibited.
• DO NOT connect RetroAire unit to circuit with
incorrectly-sized over current protection device.
• All cord-connected 265 volt units must be plugged into
receptacles within unit subbase or chassis.
Electrical Powe r Connection
• Verify RetroAire unit rating plate for circuit ampacity and
required breaker or fuse size.
• Verify existing breaker or fuse is correct size.
• Replace breaker or fuse if incorrectly-sized.
• Breakers must be type HACR only.
• Cord-connected units — verify wall outlet is correct
rating. Outlet’s blade confi guration must match cord
supplied with RetroAire unit.
• Hard-wired units — verify power wiring is correctly
sized. Inspect existing wiring for any defi ciencies, such
as cuts or frayed wires. Replace such wiring if found.
• Refer wire diagrams for wire connections.
The Right Fit for Comfort 12 Made in USA
INSTALLATION
Installation
1.
See instructions for specifi c RetroAire unit.
2.
DO NOT connect power to unit or plug in cord until
instructions in this manual have been completed.
3.
Place new chassis in same place where old chassis
stood. Secure to subbase or wall as older unit was
secured.
4.
Check hose for cracks and/or brittleness, replace with
new hoses if any damage is found. Pipe new chassis
with same hoses.
5.
Hard piping, there should be union between unit and
hand shut off valve for service or removal of unit.
Connect condensate tube, and route to adequate drain.
6.
Plug line cord into receptacle.
• If hard wired; connect power wiring to unit wires in
J-box. See wiring diagram on unit. Follow instructions
on page 12 to verify existing wiring and over-current
protection.
• Remove line cord wires from Water Source Console
Units power entrance terminals. Route power supply
wiring through strain-relief bushing and connect leads
to power entrance terminals.
• Secure strain-relief clamp. If wiring is through conduit,
insert conduit through control box knockout and
secure in place.
• DO NOT turn on power until completing instructions in
“Final Inspection and Startup” on page 14.
7.
Open water valves. Bleed air from water lines with air
vent (if used) or by uncoupling return water line allow
any air to escape.
• If water appears dirty entire water system should be
fl ushed with proper cleaners to obtain PH value of 7
or 8.
• Take care if any sort of glycol(antifreeze) is being
used when cleaning system. Be careful not to let fl uid
get on any carpeting etc.
8.
DO NOT PLUG LINE CORD IN, if in used condition.
9.
Follow instructions in “Final Inspection and Startup” on
page 14.
The Right Fit for Comfort 13 Made in USA
FINAL INSPECTION AND START-UP
Before Operating Unit
Verify electrical supply matches electrical
requirements of the unit, and unit is properly
grounded.
Examine control box. Ensure all wire connections
are secure.
Verify chassis is properly fi tted to cabinet and
securely mounted to sub base or fl oor.
Make sure chassis is level.
Pour water into drain pan and verify it fl ows from
drain pan to condensate drain
Verify indoor blower wheels are secured to motor
shaft, and rotate freely.
Ensure all sheet metal panels are in place and
secure.
Attach front panel to existing cabinet enclosure.
Verify nothing interferes with room discharge air
or return air of units.
– Check for curtains or drapes that obstruct air fl ow.
– See Figures 9 and 10.
– Check for plush carpeting that can obstruct return
air.
– Items like these can cause serious damage to
chassis.
Figure 9 - Proper Air Flow Diagram
Any obstruction of supply air, including use of
defl ector baffl es, may cause condensate to form on
louver or cabinet . See Figure 9 ).
To ensure optimum performance of your Water Source
Console Unit, avoid restricting air fl ow. Position of
curtains or drapes over supply air grille may cause
air to recirculate without cooling the room. Unit will
short cycle and may cause premature compressor
failure. See Figure 10.
Figure 10 - Restricted Air Flow Diagram
The Right Fit for Comfort 14 Made in USA
FINAL INSPECTION & START-UP
Start Up
Initiate proper unit start up.
1.
Adjust all hand water valves to full open position. Turn
power on to the units. If when taking old unit out you
marked the position of hand water valve handle put it
back to that position rather than full open.
2.
Operate each unit in cooling cycle fi rst.
• Set thermostat temperature lower than room
temperature and depress "Cool" button.
• Entering water temperature (EWT) should be at
least 60°F (16°C). for start up.
• Unit will start discharging cool air.
• After unit has been running about 5 minutes check
temperature of EWT and leaving water temperature
(LWT). difference should show higher LWT by
about 10-12°F (6-7°C). If you fi nd you have this
difference you also have correct water fl ow. If
the difference is less then 10-12°F (6-7°C) you
have too much water fl owing through the unit. If
difference is higher you don’t have enough water
fl owing through the unit. Adjust the hand water
valve to get the temperature difference needed.
3.
Check unit heating operation. Turn thermostat to
slightly above room temperature. Depress "Heat"
button. Compressor and fan operate. After about 5
minutes of operation check water temperature of EWT
& LWT. For correct water fl ow adjust hand valves until
LWT is 6°F (3°C) less than EWT.
Operating Limits
WMH/CM/CW Operating Limits
Air & Water Limits Cooling°F(°C) Heating°F(°C)
Min. Ambient Air 50(10) 50(10)
Rated Ambient Air 80(27) 70(21)
Max. Ambient Air 100(38) 85(30)
Mim. EAT 50(10) 70(21)
Rated EAT DB/WB 80/67(27/20) 60(16)
Max. EAT DB/WB 100/83(38/29) 80(27)
°F
Rated *EAT DB/WB
Rated**EWT
Rated***LWT
Max.EWT
Max.EWT
Min.*EAT DB/WB
Min.*EWT
Water Limits Cooling°F(°C) Heating°F(°C)
Min. EWT 60(16) 60(16)
Normal EWT 85(30) 70(21)
Max. EWT 95(35) 90(33)
(*'EAT' and Ambient Temperature surrounding the unit are same value)
°F
°F
°F
°F
°F
80/67(27/20) 70/60(21/16)
85(30) 70(21)
95(35) N/A
95/71(35/22) 80/67(27/20)
95(35) 90(33)
°F
67/57(20/14) N/A
65(19) N/A
STARTING CONDITIONS
Unit starts and operates with entering air temperature(EAT)
of 50°F(10°C) and entering water temperature(EWT) of
60°F(16°C) with both air and water at fl ow rates used in
AHRI Standard 320/86 rating test, for initial start up in winter. This is start up only, not long running time.
4.
Unit Mount ACO (Automatic change-over) with Fan
Cycle Switch (Optional). This option allows evaporator
fan cycle to run continuously. Place switch in cycling
position evaporator fan only runs when unit is calling
for heat or cooling. When switch is placed in “constant”
position, evaporator fan runs continuously unless unit is
physically turned off.
Three factors determine operating limits of RetroAire heat
pump units:
1. Return air temperature
2. Water temperature
3. Ambient temperature
Whenever any one of these factors is at minimum or
maximum level, other two factors must be at normal levels
to ensure proper unit operation.
If unit fails to operate:
A. Check voltage and current is in accordance with
electrical specifi cations on unit rating plate.
B. Look for wiring errors. Check for loose terminals or
wire nuts where wire connections have been made
on both line and low-voltage terminal boards.
C. Check for water leaks around hose swivel joints.
If hard piped check all joints. After unit is running
check for leaks around condensate drain hose and
connection.
D. Verify High Pressure Switch (HPS) did not trip.
Cycle system switch off to reset lockout relay.
E. Determine if fan operates during heating and cool-
ing modes.
If these checks fail to reveal a problem and unit will not
operate, contact a service technician for proper diagnosis.
The Right Fit for Comfort 15 Made in USA
FINAL INSPECTION & START-UP
Unit Mounted Thermostat - See Figure 11 .
1.
Place Water Source Console Units in "COOL", "HEAT",
or "OFF" position. Test operation in all positions.
2.
Place fan in either LOW or HIGH speed using fan speed
switch. Test operation in both positions for heating and
cooling.
3.
Test operation of optional Fan Cycle switch. Toggle
switch located on side of control box. With switch set
ON (continuous fan operation) or AUTO (cycling with
thermostat) for both heating and cooling. Set switch in
desired position.
4.
Rotate thermostat knob counter clockwise to
increase setpoint temperature, or clockwise to
decrease. Turn unit-mounted thermostat knob counter
clockwise until it stops produces warmest room
temperature, while turning it clockwise until it stops
produces coolest. Adjust setting for personal comfort.
Figure 11 - Typical Unit Mount Control
Boiler-less Control Operation-Optional
– Heat pump units with optional Boiler-less control
and electric heat, heat pump and electric heat
do not operate simultaneously.
– Boiler-less control monitors incoming water
temperature to heat exchanger and when it
drops below approximately 50°F control will
change from heat pump operation to electric
heat.
NOTICE
DO NOT rotate thermostat knob back and forth from
heating to cooling. This causes compressor to cycle
on and off rapidly and will cause damage to the
compressor. Allow compressor to remain off for at
least three minutes prior to restarting the unit.
Remote Mounted Thermostat
1.
Place thermostat in either “COOL”, “HEAT”, or “OFF”
position. Test operation in all positions.
2.
If thermostat is fi tted with fan switch, set as desired
places fan in either “ON”, “OFF”, or “AUTO”. Test
operation in all positions.
3.
Check thermostat calibration for both heating and
cooling operation.
Straight Cooling Water Source Console Units
Cooling Cycle
NOTICE
When unit is fi rst powered up, high humidity conditions
may cause condensation to form on the discharge grill.
Keep doors and windows closed to reduce humidity allowing condensation to evaporate.
Room temperature must be above 65°F (18°C) for
compressor to operate in cooling mode on Water
Source Console Units with unit-mounted controllers.
1.
Place thermostat or system switch in COOL position.
2.
Adjust thermostat to cooler temperature until indoor
fan starts running. Compressor should turn on and
cold air begin to fl ow from the unit. Let unit continue
operating to cool the room and remove humidity.
3.
After unit starts running and space gets cooler, adjust
thermostat to warmer temperature until compressor
cycles off.
4.
If colder room temperature is desired, adjust
thermostat to cooler temperature setting, turning
compressor and fan back on.
5.
If warmer room temperature is desired, adjust
thermostat to warmer temperature setting, compressor
stops.
6.
Place thermostat or system switch in OFF position.
All operation should stop.
Heating Cycle — Electric Option
Room temperature must be below 85°F (29.4°C) to
energize the heater on Water Source Console Units
with unit-mounted controllers.
1.
Place thermostat or system switch in HEAT position.
2.
Adjust thermostat for warmer temperature until
indoor fan starts running and electric heater coil starts
emitting heat.
3.
After unit starts running and space gets warmer, adjust
thermostat to cooler temperature until electric heater
turns off.
4.
If warmer room temperature is desired, adjust
thermostat to warmer temperature setting, which will
turn electric heater back on.
The Right Fit for Comfort 16 Made in USA
SEQUENCE OF OPERATION
5.
If cooler room temperature is desired, adjust
thermostat to cooler temperature setting until electric
heater turns off. Fan will stop.
6.
Place the thermostat or system switch to OFF position.
All operation should stop.
Heating Cycle — Hydronic Option
Verify the motorized valve is rated for correct voltage.
• Most RetroAire units with unit mount controls will power
hydronic valve that is same voltage as unit (ex: unit
rated 208/230V will power a 208/230V).
• Check the wiring diagram (located on the unit) and
voltage application for the specifi c unit.
• Other valve confi gurations and voltage options are
available. Consult Technical Service if unit voltage does
not match your valve application.
Room temperature must be below 85°F (29°C) for
hydronic heater to operate.
1.
Place thermostat or system switch in HEAT position.
2.
Adjust thermostat to warmer temperature. Following
occurs
– Motorized valve should open and allow hot
water to run through coil.
– Indoor fan will run, blowing air through hydronic
coil.
– Signal to water valve continues until room
temperature rises above setpoint by 3°F (2°C).
3.
After unit starts running and area warms, adjust
thermostat to cooler temperature, hydronic valve closes
and indoor fan switches off.
4.
If warmer room temperature is desired, adjust
thermostat to warmer temperature setting, which
opens hydronic valve and turns on the indoor fan.
5.
If cooler room temperature is desired, adjust
thermostat to cooler temperature setting. Hydronic
valve will close and fan stops.
6.
Place thermostat or system switch to OFF position.
All operation should stop.
Heat Pump Water Source Console Units
Unit is equipped with a reversing valve that is energized for
cooling and de-energized in heating mode.
Cooling Cycle — Heat Pump Units
Room temperature must be above 65°F (29°C) for
compressor to operate in cooling mode on Water
Source Console Units with unit-mounted controllers.
1.
Place thermostat or system switch to COOL.
2.
Adjust thermostat to cooler temperature until indoor
fan starts running. Compressor will turn on and cold
air begins to fl ow from the unit. Allow unit to continue
operating cooling the room and remove humidity.
3.
After unit starts running and space gets cooler, adjust
thermostat to warmer temperature until compressor
cycles off.
4.
If colder room temperature is desired, adjust
thermostat to cooler temperature setting, turning
compressor and fan back on.
5.
If warmer room temperature setting is desired, adjust
thermostat to warmer temperature. Cooling mode
ceases and compressor and fan stop.
6.
Place thermostat or system switch to OFF.
All operation should stop.
Heating Operation — Heat Pump Units — Entering
Water Temperature Above 60°F (16°C)
Room temperature must be below 85°F (29°C)
for the compressor to operate in heating mode on
Water Source Console Units with unit-mounted
co
ntrollers
1.
Place thermostat or system switch to HEAT position.
2.
Adjust thermostat to warmer temperature setting
compressor and fan start running.
begin to fl ow from unit.
3.
After unit starts running and space warms, adjust
thermostat to cooler temperature until fan and
compressor turn off.
4.
For warmer room temperature,
to warmer temperature
compressor back on
5.
If cooler room temperature is desired,
thermostat to cooler temperature setting
mode ceases and
6.
Place thermostat or system switch in OFF position.
All operation should stop.
.
until
Warm air will
adjust thermostat
setting
.
compressor and fan will stop.
turning fan, and
adjust
. Heating
The Right Fit for Comfort 17 Made in USA
SEQUENCE OF OPERATION
Auxiliary Heating Operation — Electric Option
Room temperature must be below 85°F(29°C) to
energize heater on Water Source Console Units with
unit-mounted controllers.
1.
Place thermostat or system switch to HEAT position.
2.
Adjust thermostat to warmer temperature until fan
starts running and electric coil starts emitting heat.
3.
After unit starts running and space warms, adjust thermostat to cooler temperature until electric heater and
fan turn off.
4.
If warmer room temperature is desired, adjust thermostat to warmer temperature setting, which turns
electric heater and fan back on.
5.
If cooler room temperature is desired, adjust thermostat to cooler temperature setting until electric heater
and fan turn off.
6.
Place thermostat or system switch to OFF position.
All operation should stop.
Auxiliary Heating Operation— Hydronic Option
Room temperature must be below 85°F (29°C) for
hydronic heater to operate on Water Source Console
Units with unit-mounted controllers. Hydronic valve
is 24Vac normally open valve. Should power be lost
to the unit, valve defaults to open position.
1.
Place thermostat or system switch to HEAT position.
2.
Adjust thermostat to warmer temperature.
Following occurs:
– Motorized valve opens and allows hot water to
run through coil.
– Indoor fan runs, blowing air through hydronic
coil
– Signal to water valve continues until room tem-
perature rises above setpoint by 3°F (2°C).
– After unit starts running and space gets warm-
er, hydronic valve closes and fan turns off.
3.
After unit starts and space warms, adjust thermostat to
cooler temperature setting, hydronic valve closes and
fan turns off.
4.
If warmer room temperature is desired, adjust thermostat to warmer temperature setting, which opens the
hydronic valve and turn fan on.
5.
If cooler room temperature is desired, adjust thermostat to cooler temperature setting. Hydronic valve
closes and fan turns off.
6.
Place thermostat or system switch to OFF position.
All operation should stop.
The Right Fit for Comfort 18 Made in USA
MAINTENANCE
!
DANGER
To reset switch:
Electrical shock hazard. Disconnect power to
replacement units before servicing or accessing
control compartment. Failure to do so could result in
severe personal injury or death.
Figure 12 Manual Reset Limit Switch
NOTICE
It is illegal to discharge refrigerant into the
atmosphere. Use proper reclaiming methods and
equipment when servicing a replacement unit.
Monthly Inspection And Maintenance
For optimum performance and reliability recommend
following inspections and maintenance monthly. Units
installed in harsh or dirty environments require more
frequent inspections and maintenance.
• Disconnect power to unit and remove necessary access
panels.
• Clean or replace the return air fi lter. Clean or replace
the return air fi lter as needed.
Allowing dust to collect on the fi lter will cause unit to lose
effi ciency and eventually malfunction. Check fi lter at least
once a month. Some environments may require more
frequent replacement, depending on particulate in the air
stream.
• Vacuum return air grille surface.
• Inspect & clean chassis interior for rodent or insect
infestation.
• Clean & fl ush condensate drain pan.
• Ensure condensate drain is functioning properly.
• Inspect refrigeration tubing, especially braze joints,
for signs of refrigerant leaks (oil residue). Repair if
necessary.
• Inspect coil. Ensure dirt or debris have not collected
on fi ns. Clean if necessary. Take care not to damage
coil fi ns when cleaning. Use fi n comb to straighten any
bent fi ns.
• Examine control box. Ensure all wire connections are
secure.
• Ensure blower wheels are secured to their motor shafts.
• Ensure dirt or debris have not collected on blower
wheels. Use vacuum and soft brush to clean if
necessary.
• If unit has hydronic option installed, inspect piping,
especially braze joints, for signs of water leaks. Repair
if necessary.
• Clean exterior of cabinet as desired with mild soap or
household cleaner.
• In event limit switch opens and de-energizes electric
heat, limit switch will need to be manually reset.
Seasonal Start-Up And Maintenance
At the beginning of cooling and heating seasons, complete
mechanical check should be performed and maintenance/
inspections performed as described below.
Disconnect power to unit and remove necessary access
panels.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Remove control box cover.
Locate limit switch.
Push in reset button on switch face. See Figure
12.
Reset Button
*Note:
Button will pop
out when limit
switch opens.
Push in to reset.
Perform inspections and maintenance defi ned in
“Monthly start-up and maintenance.”
Visually check equipment. Look for obvious changes
in unit such as damaged coils or evidence of extended
wear on any moving parts.
Check for unusual odors, oil leaks, or stains on or
around coil and refrigerant lines. Presence of oil here
may indicate potentially serious problem such as
refrigerant leak (example — burned motor windings,
water, or refrigerant).
Verify base pan is clean.
Inspect all electrical connections. Look for frayed
wires and poor connections. Loose terminal ends will
eventually fail, causing loss of performance or possible
damage to equipment.
Check fan motor and blower assemblies. Some units
may require drop of light oil to motors and/or bearing
assemblies, look for oil cups. Verify set-screws and
motor mounting hardware are tight.
Brush and/or vacuum centrifugal fan blades and
blower cage assemblies, they must be clean to operate
effi ciently.
If unit has hydronic option installed, inspect piping,
especially braze joints, for signs of water leaks. Repair
if necessary.
Clean or replace return air fi lter.
Vacuum return air grille surface.
Inspect and clean chassis interior for rodent or
insect infestation.
The Right Fit for Comfort 19 Made in USA
MAINTENANCE
13.
12.
Inspect coils. Use fi n comb to straighten out any
damaged fi ns.
Coils must be clean for proper
operation.
Do not use solvent-based cleaner to clean coils,
some solvents produce noxious odor when unit is in
operation.
Inspect and clean drain pan and drain line(s). Use of
anti-fungicide tablet to keep condensate system free
from bacterial contaminants is recommended.
14.
Verify unit is level. Over time building and equipment
may settle, causing shift in direction of condensate
fl ow.
15.
Replace access panels and reconnect electrical power.
16.
Test unit operation.
TROUBLESHOOTING
Troubleshooting - Have qualifi ed technician conduct troubleshooting procedures.
Symptom Suggestion
No heat or cooling
Thermostat calls for cooling, cool air is
not coming from unit.
Thermostat calls for heat, no heat comes
from unit.
Thermostat calls for heat while in heat
pump mode, but no heated air comes
from unit.
• Verify unit has power and thermostat is satisfi ed. If thermostat is not
satisfi ed, call your installing contractor or service contractor.
• Check for continuity between thermostat and unit. Verify 24 Vac is
present across terminals C and R.
• Verify water is fl owing through water coil. Locate high pressure switch
reset button, push the button.
• Some units are equipped with LCDI (Leakage Current Detection
Interrupt) line cord. Verify line cord is reset by pressing reset button at
line cord plug.
• Note: If indoor fan is operational and all above suggested procedures
have been followed, and there is still no cooling being supplied by unit,
contact trained heating and cooling professional.
• Check to see if unit has power or thermostat has been satisfi ed. If
unit has power and thermostat is satisfi ed, set thermostat above room
temperature.
• Units equipped with electric heaters have temperature limit switch to
prevent electric heater from reaching unsafe temperatures. If after
calling for heating heater is not energized, check for continuity across
limit. If limit is open, replace with equivalent limit switch. Auto reset /
Manual reset Switch.
• If unit is equipped with LCDI Line Cord, verify it is not tripped.
• While in heat pump mode, verify thermostat is not energizing O terminal.
RetroAire units are designed to work in heat pump mode when 24Vac is
present across Y and C.
• Verify unit has power or thermostat has been satisfi ed. If unit has power
and thermostat is satisfi ed, set thermostat above room temperature.
The Right Fit for Comfort 20 Made in USA
Table 2 Performance Data
PERFORMANCE DATA CM / CW / WM **
PERFORMANCE DATA CM / CW / WM **
Voltage Model
CMHG08 9,300 (2.7) 11.3 11,200 (3.3) 4.0 350 (165) 140 (64)
CMHG12 13,000 (3.8) 11.5 15,600 (4.6) 3.9 450 (212) 140 (64)
CWHG08 9,300 (2.7) 11.3 11,200 (3.3) 4.0 350 (165) 150 (68)
CWCG08 9,300 (2.7) 11.3 N/A N/A 350 (165) 150 (68)
115V
208/230V
CWHG10 12,200 (3.6) 11.1 13,500 (4.0) 3.6 400 (189) 160 (73)
CWCG10 12,200 (3.6) 11.1 N/A N/A 400 (189) 160 (73)
CWHG13 13,000 (3.8) 11.5 15,600 (4.6) 3.9 450 (212) 165 (75)
CWCG13 13,000 (3.8) 11.5 N/A N/A 450 (212) 165 (75)
WMHG09 9,300 (2.7) 11.3 11,200 (3.3) 4.0 350 (165) 150 (68)
WMHG12 13,000(3.8) 11.5 15,600 (4.6) 3.9 450 (212) 160 (73)
CMHG08 9,300 (2.7) 11.3 11,200 (3.3) 4.0 350 (165) 140 (64)
CMHG12 13,000 (3.8) 11.5 15,600 (4.6) 3.9 450 (212) 140 (64)
CMHG15 15,000 (4.4) 11.3 18,300 (5.4) 3.5 500 (236) 150 (68)
CWHG08 9,300 (2.7) 11.3 11,200 (3.3) 4.0 350 (165) 150 (68)
CWCG08 9,300 (2.7) 11.3 N/A N/A 350 (165) 150 (68)
CWHG10 12,200 (3.6) 11.1 13,500 (4.0) 3.6 400 (189) 160 (73)
CWCG10 12,200 (3.6)) 11.1 N/A N/A 400 (189 160 (73)
CWHG13 13,000 (3.8) 11.5 15,600 (4.6) 3.9 450 (212) 165 (75)
CWCG13 13,000 (3.8) 11.5 N/A N/A 450 (212) 165 (75)
CWHG17 16,500 (4.8) 12.2 20,800 (6.1) 3.8 500 (236) 170 (77)
CWCG17 16,500 (4.8) 12.2 N/A N/A 500 (236) 170 (77)
Cooling Heat Pump
Btuh (kW) EER Btuh (kW) EER
Indoor
Airfl ow
CFM (L/S)
Shipping
Weight
Lbs (Kg)
**Cooling – E.A.T. D.B. 80.6°F (27°C)
E.A.T. W.B. 66.2°F (19°C)
E.W.T. 86°F (30°C)
**Heating - E.A.T. D.B. 68°F (20°C)
E.A.T. W.B. 59°F (15°C)
E.W.T. 68°F (20°C)
WMHG09 9,300 (2.7) 11.3 11,200 (3.3) 4.0 350 (165) 150 (68)
WMHG12 13,000 (3.8) 11.5 15,600 (4.6) 3.9 450 (212) 160 (73)
WMHG15 15,000 (4.4) 11.3 18,300 (5.4) 3.5 550 (260) 170 (77)
CMHG08 9,300 (2.7) 11.3 11,200 (3.3) 4.0 350 (165) 140 (64)
CMHG12 13,000 (3.8) 11.5 15,600 (4.6) 3.9 450 (212) 140 (64)
CMHG15 15,000 (4.4) 11.3 18,300 (5.4) 3.5 500 (236) 150 (68)
CWHG08 9,300 (2.7) 11.3 11,200 (3.3) 4.0 350 (165) 140 (64)
CWCG08 9,300 (2.7) 11.3 N/A N/A N/A N/A
CWHG10 12,200 (3.6) 11.1 13,500 (4.0) 3.6 400 (189) 160 (73)
265V
CWCG10 12,200 (3.6) 11.1 N/A N/A 400 (189 160 (73)
CWHG13 13,000 (3.8) 11.5 15,600 (4.6) 3.9 450 (212) 165 (75)
CWCG13 13,000 (3.8) 11.5 N/A N/A 450 (212) 165 (75)
CWHG17 16,500 (4.8) 12.2 20,800 (6.1) 3.8 500 (236) 170 (77)
CWCG17 16,500 (4.8) 12.2 N/A N/A N/A N/A
WMHG09 9,300 (2.7) 11.3 11,200 (3.3) 4.0 400 (189) 150 (68)
WMHG12 13,000 (3.8) 11.5 15,600 (4.6) 3.9 450 (212) 160 (73)
WMHG15 15,000 (4.4) 11.3 18,300 (5.4) 3.5 550 (260) 170 (77)
The Right Fit for Comfort 21 Made in USA
ELECTRICAL SPECIFICATIONS
Table 3 CW / CM - 8,000 BTU Electrical Specifi cation
Power Supply
Volt — 1–60
Volt Min RLA LRA FLA Hp Htr# Volt W HA TCA THA MCA MOCP Plug
115V 104 8 45.6 1.4 0.09 N/A N/A N/A N/A 9.4 N/A 11.4 15 5-15P
208/
230V
265V 240 3.32 18.8 .67 0.08
197 4 22.2 0.6 0.08
Compressor
Indoor Fan
Motor
Electric Heat Unit Electrical Ratings
0 N/A N/A N/A
208 1636 7.9 8.5 10.6
2
230 2000 8.7 9.3 11.6
208 2454 11.8 12.4 15.5
3
230 3000 13.0 13.6 17.1
208 3271 15.7 16.3 20.4
4
230 4000 17.4 18.0 22.5
208 4089 19.7 20.3 25.3 30 6-30P
5
230 5000 21.7 4.0 22.3 27.9 30 7–20P
0 N/A N/A N/A
265 1830 6.9 7.5 9.4
2
277 2000 7.2 7.8 9.8
265 2746 10.4 11.0 13.7
3
277 3000 10.8 11.4 14.3
265 3661 13.8 14.4 18.0
4
277 4000 14.4 15.0 18.8
265 4576 17.3 17.9 22.3
5
277 5000 18.1 18.7 23.3
N/A 5.6 15 6–15P
4.6
N/A 4.8 15 7–20P
4.0
15 6–15P
20 6–20P
25 6-30P
15 7–20P
15 7–20P
20 7-20P
25 7-30P
Table 4 WM - 9,000 BTU Electrical Specifi cations
Power Supply
Volt — 1–60
Volt Min RLA LRA FLA Hp Htr# Volt W HA TCA THA MCA MOCP Plug
115V 104 8 45.6 1.4 0.09 N/A N/A N/A N/A 9.4 N/A 11.4 15 5-15P
208/
230V
265V 240 3.32 18.8 .67 .08
197 4 22.2 0.6 0.08
Compressor
Indoor Fan
Motor
Electric Heat Unit Electrical Ratings
0 N/A N/A N/A
208 1636 7.9 8.5 10.6
2
230 2000 8.7 9.3 11.6
208 2454 11.8 12.4 15.5
3
230 3000 13.0 13.6 17.1
0 N/A N/A N/A N/A N/A 4.8 15 7-20P
265 1830 6.9
2
277 2000 7.2 7.9 9.9
265 2746 10.4 11.0 13.8
3
277 3000 10.8 11.5 14.4
N/A 5.6 15 6–15P
4.6
7.6 9.5
4.0
15 6–15P
20 6–20P
15 7-20P
15 7-20P
The Right Fit for Comfort 22 Made in USA
ELECTRICAL SPECIFICATIONS
Table 5 CW - 10,000 BTU Electrical Specifi cations
Power Supply
Volt — 1–60
Volt Min RLA LRA FLA Hp Htr# Volt W HA TCA THA MCA MOCP Plug
115V 104 11.8 63 1.4 0.09 N/A N/A N/A N/A 13.2 N/A 16.2 25 5-20P
208/
230V
265V 240 4.2 31.5 0.67 0.08
Compressor
197 5.6 32.5 0.6 0.08
Indoor Fan
Motor
Electric Heat Unit Electrical Ratings
0 N/A N/A N/A
208 1636 7.9 9.3 11.6
2
230 2000 8.7 10.1 12.6
208 2454 11.8 13.2 16.5
3
230 3000 13.0 14.4 18.1
208 3271 15.7 17.1 21.4
4
230 4000 17.4 18.8 23.5
208 4089 19.7 21.1 26.3
5
230 5000 21.7 23.1 28.9
0 N/A N/A N/A
265 1830 6.9
2
277 2000 7.2 7.8 9.8
265 2746 10.4 11.0 13.7
3
277 3000 10.8 11.4 14.3
265 3661 13.8 14.4 18.0
4
277 4000 14.4 15.0 18.8
265 4576 17.3 17.9 22.3
5
277 5000 18.1 18.7 23.3
7.5 9.4
N/A 7.6 15 6–15P
6.2
N/A 5.9 15 7-20P
4.9
15 6-15P
20 6-20P
25 6-30P
30 6-30P
15 7–20P
15 7–20P
20 7–20P
25 7-30P
Table 6 CM 12,000 / CW 13,000 BTU Electrical Specifi cations
Power Supply
Volt — 1–60
Volt Min RLA LRA FLA Hp Htr# Volt W HA TCA THA MCA MOCP Plug
115V 104 12.7 63 1.4 0.09 N/A N/A N/A N/A 14.1 N/A 17.3 25 5-20P
208/
230V
Models
CM & WM
208/
230V
Model
CM only
265V 240 4.6 20 0.67 0.08
Compressor
197 5.6 29 0.6 0.08
Indoor Fan
Motor
Electric Heat Unit Electrical Ratings
0 N/A N/A N/A
208 1636 7.9 9.3 11.6
2
230 2000 8.7 10.1 12.6
208 2454 11.8 13.2 16.5
3
230 3000 13.0 14.4 18.1
208 3271 15.7 17.1 21.4
4
230 4000 17.4 18.8 23.5
208 4089 19.7 21.1 26.3
5
230 5000 21.7 23.1 28.9
0 N/A N/A N/A 5.3 N/A 6.4 15 7-20P
265 1830 6.9
2
277 2000 7.2 7.8 9.8
265 2746 10.4 11.0 13.7
3
277 3000 10.8 11.4 14.3
265 3661 13.8 14.4 18.0
4
277 4000 14.4 15.0 18.8
265 4576 17.3 17.9 22.3
5
277 5000 18.1 18.7 23.3
N/A 7.6 15 6–15P
6.2
7.5 9.4
6.2
15 6–15P
20 6–20P
25 6–30P
30 6–30P
15 7–20P
15 7–20P
20 7–20P
25 7–30P
The Right Fit for Comfort 23 Made in USA
ELECTRICAL SPECIFICATIONS
Table 7 WM - 12,000 BTU Electrical Specifi cations
Power Supply
Volt — 1–60
Volt Min RLA LRA FLA Hp Htr# Volt W HA TCA THA MCA MOCP Plug
115V 104 12.7 63 1.4 0.09 N/A N/A N/A N/A 14.1 N/A 17.3 25 5-20P
208/
230V
265V 240 4.6 20 0.67 0.08
Compressor
197 5.6 29 0.6 0.08
Indoor Fan
Motor
Electric Heat Unit Electrical Ratings
0 N/A N/A N/A
208 1636 7.9 8.5 10.6
2
230 2000 8.7 9.3 11.6
208 2454 11.8 12.4 15.5
3
230 3000 13.0 13.6 17.1
0 N/A N/A N/A 5.3 N/A 6.4 15 7-20P
265 1830 6.9
2
277 2000 7.2 7.9 9.9
265 2746 10.4 11.0 13.8
3
277 3000 10.8 11.5 14.4
N/A 7.6 15 6–15P
6.2
7.6 9.5
5.3
15 6–15P
20 6–20P
15 7-20P
15 7-20P
Table 8 CM - 15,000 BTU Electrical Specifi cations
Power Supply
Volt — 1–60
Volt Min RLA LRA FLA Hp Htr# Volt W HA TCA THA MCA MOCP Plug
208/ 230V 197 6.6 33 0.6 0.08
265V 240 5.6 28 0.67 0.08
Compressor Indoor Fan Motor Electric Heat Unit Electrical Ratings
0 N/A N/A N/A
208 1636 7.9 8.5 10.6
2
230 2000 8.7 9.3 11.6
208 2454 11.8 12.4 15.5
3
230 3000 13.0 13.6 17.1
208 3271 15.7 16.3 20.4
4
230 4000 17.4 18.0 22.5
208 4089 19.7 20.3 25.3
5
230 5000 21.7 22.3 27.9
0 N/A N/A N/A
265 1830 6.9 7.5 9.4
2
277 2000 7.2 7.8 9.8
265 2746 10.4 11.0 13.7
3
277 3000 10.8 11.4 14.3
265 3661 13.8 14.4 18.0
4
277 4000 14.4 15.0 18.8
265 4576 17.3 17.9 22.3
5
277 5000 18.1 18.7 23.3
7.2
6.3
N/A 8.9 15 6–15P
15 6–15P
20 6-20P
25 6-30P
30 6-30P
N/A 7.7 15 7-20P
15 7-20P
15 7-20P
20 7-20P
25 7-30P
The Right Fit for Comfort 24 Made in USA
ELECTRICAL SPECIFICATIONS
Table 9 WM - 15,000 BTU Electrical Specifi cations
Power Supply
Volt — 1–60
Volt Min RLA LRA FLA Hp Htr# Volt W HA TCA THA MCA MOCP Plug
208/ 230V 197 6.6 33 0.6 0.08
265V 240 5.6 28 0.67 0.08
Compressor Indoor Fan Motor Electric Heat Unit Electrical Ratings
0 N/A N/A N/A
208 1636 7.9 8.5 10.6
2
230 2000 8.7 9.3 11.6
208 2454 11.8 12.4 15.5
3
230 3000 13.0 13.6 17.1
0 N/A N/A N/A
265 1830 6.9 7.6 9.5
2
277 2000 7.2 7.9 9.9
265 2746 10.4 11.0 13.8
3
277 3000 10.8 11.5 14.4
N/A 8.9 15 6–15P
7.2
N/A 7.7 15 7-20P
6.3
15 6–15P
20 6-20P
15 7-20P
15 7-20P
Table 10 CW - 17,000 BTU Electrical Specifi cations
Power Supply
Volt — 1–60
Volt Min RLA LRA FLA Hp Htr# Volt W HA TCA THA MCA MOCP Plug
208/
230V
265V 240 6.0 28 0.67 0.08
Compressor
197 7.4 33 0.6 0.08
Indoor Fan
Motor
Electric Heat Unit Electrical Ratings
0 N/A N/A N/A
208 1636 7.9 9.3 11.6
2
230 2000 8.7 10.1 12.6
208 2454 11.8 13.2 16.5
3
230 3000 13.0 14.4 18.1
208 3271 15.7 17.1 21.4
4
230 4000 17.4 18.8 23.5
208 4089 19.7 21.1 26.3
5
230 5000 21.7 23.1 28.9
0 N/A N/A N/A
265 1830 6.9 7.5 9.4
2
277 2000 7.2 7.8 9.8
265 2746 10.4 11.0 13.7
3
277 3000 10.8 11.4 14.3
265 3661 13.8 14.4 18.0
4
277 4000 14.4 15.0 18.8
265 4576 17.3 17.9 22.3
5
277 5000 18.1 18.7 23.3
N/A 9.9 15 6–15P
15 6–15P
8.0
N/A 8.2 15 7-20P
6.7
20 6-20P
25 6-30P
30 6-30P
15 7-20P
15 7-20P
20 7-20P
25 7-30P
The Right Fit for Comfort 25 Made in USA
ELECTRICAL SPECIFICATIONS
Figure 13 NEMA Specifi cations Non / Locking / Receptacles
The Right Fit for Comfort 26 Made in USA
NOTES
The Right Fit for Comfort 27 Made in USA
The Right Fit for Comfort P/N 240008071, Rev. G [07/2012]
ECR International Inc
2201 Dwyer Avenue
Utica, NY 13501
e-mail: info@RetroAire.com
An ISO 9001-2008 Certifi ed Company
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