Enviromax AVMC36HPWN User manual

MODEL AVMC36HPWN
Enviromax
Vertical Modular Heat Pumps Product Manual
Enviromax
Unit 3, Morgans Business Park, Bettys Lane, Norton Canes,
Cannock, Staffordshire, United Kingdom WS11 9UU
[phone] • Fax [phone]
E-mail: [email protected] • Internet: www.enviromax.co.uk
Manufactured under U.S. Patent # No. 6,571,572 & No. 6,370,899
1. Description ........................................ 4
2. Installation .......................................11
3. Start-Up ...........................................14
4. Troubleshooting ................................15
5. Maintenance.....................................18
6. Parts List ..........................................19
P/N 01513

2
Enviromax, 12/06
How To Use This Manual
This manual is intended to be a comprehensive guide to the Enviromax line of vertical heat pumps. It contains in-
stallation, troubleshooting, maintenance, and application information. The information contained in this manual
is to be used by the installer as a guide only. This manual does not supersede or circumvent any applicable na-
tional or local codes.
If you are installing the Enviromax 10 heat pump, rst read Chapter 1 and scan the entire manual before begin-
ning the installation as described in Chapter 2. Chapter 1 contains general, descriptive information and provides
an overview which can speed up the installation process and simplify troubleshooting.
If a malfunction occurs, follow this troubleshooting sequence:
1. Make sure you understand how the Enviromax™ HP works (Chapters 1 & 3).
2. Identify and correct installation errors (Chapter 2).
3. Refer to the troubleshooting information in Chapter 4.
If you are still unable to correct the problem, contact Enviromax for additional assistance.
Please read the following “Important Safety Precautions” before beginning any work.
Important Safety Precautions
1. USE CARE when LIFTING or TRANSPORTING equipment.
2. TRANSPORT the UNIT UPRIGHT. Laying it down on its side may cause oil to
leave the compressor, resulting in DAMAGE upon START-UP.
3. TURN ELECTRICAL POWER OFF AT THE breaker or fuse box BEFORE installing or
working on the equipment. LINE VOLTAGES ARE HAZARDOUS or LETHAL.
4. OBSERVE and COMPLY with ALL applicable PLUMBING, ELECTRICAL, and
BUILDING CODES & ordinances
5. SERVICE may be performed ONLY by QUALIFIED and EXPERIENCED PERSONS.
* Wear safety goggles when servicing the refrigeration circuit
* Beware of hot surfaces on refrigerant circuit components
* Beware of sharp edges on sheet metal components
* Use care when recovering or adding refrigerant
6. Use COMMON SENSE - BE SAFETY CONSCIOUS
This is the safety alert symbol . When you see this symbol on the Scholar unit and in the instruction
manuals be alert to the potential for personal injury. Understand the signal word DANGER, WARN-
ING and CAUTION. These words are used to identify levels of the seriousness of the hazard.
Failure to comply will result in death or severe personal injury and/or property
damage.
Failure to comply could result in death or severe personal injury and/or property
damage.
Failure to comply could result in minor personal injury and/or property damage.
IMPORTANT is used to point out helpful suggestions that will result in improved installation, reliability or
operation.
Specications subject to change without notice.
© 12/06 Marvair®
!DANGER
!WARNING
!CAUTION

3Enviromax, 12/06
Table of Contents
Description & Specications
1.1 General Description....................................................................................................................... 4
1.2 RatingsandSpecications............................................................................................................. 7
1.3 General Operation ......................................................................................................................... 8
1.4 Electrical Diagrams ....................................................................................................................... 9
Installation
2.1 Installation Requirements............................................................................................................ 11
2.2 MinimumAirowRequirements................................................................................................. 12
2.3 Electrical Connections................................................................................................................. 12
2.4 Condensate .................................................................................................................................. 13
Start-Up
3.1 Check-Out of Cooling Cycle .......................................................................................................14
3.2 Check-Out of Heating Cycle ........................................................................................................14
Troubleshooting
4.1 Overview ......................................................................................................................................15
4.2 Failure Symptoms Guide..............................................................................................................16
4.3 Compressor Troubleshooting .......................................................................................................17
Periodic Maintenance Requirements
5.1 Scheduled Maintenance............................................................................................................... 18
5.2 Winter Storage............................................................................................................................. 18
Parts List
6.1 Parts List...................................................................................................................................... 19
Illustrations
Figure 1. Refrigerant Circuit ........................................................................................................ 8
Figure 2. Typical Electric Schematic ........................................................................................... 9
Figure 3. Electrical Control Box ................................................................................................ 10
Tables
Table 1. m3/hr @ ESP ..................................................................................................................7
Table 2. Filter Size ......................................................................................................................7
Table 3. Ship Weight....................................................................................................................7
Table 4. Voltage Limitations......................................................................................................11
Table 5. Maximum Static Pressure ...........................................................................................12

4
Enviromax, 12/06
The Enviromax vertical heat pump system provides heating and cooling in a wide variety of ap-
plications from computer rooms to event pavillions.
The Enviromax model is designed for easy installation and service. Major components are
accessible for service beneath external panels.
The Enviromax heat pumps feature an exclusive electronic control board. The control board
consolidates several of the electrical components and improves the air conditioner’s reliability.
The control board replaces the blower relay, the lockout relay, the compressor time delay and the
timed low pressure bypass found in previous versions. In addition, the control board has LED’s to
indicate operating status and fault conditions to assist the service technician. A complete descrip-
tion of functions of the control board is below.
All Enviromax 10 heat pumps built in Sept. 2006 and later, include a number of changes to ensure
more reliable operation. The date of manufacture of the Enviromax heat pump is contained in the
serialnumber.Thelasttwodigitsoftheserialnumberarethedatecode;therstdigitindicates
the month and the second indicates the year. To determine the month and year of manufacture,
please refer to the following table:
The changes to the Enviromax 10 heat pump include:
1. The use of a single, larger capacity condensate pump instead of two smaller pumps.
2. The wire harnesses connecting the control board to the internal thermostat and the thermostat
to the plug have changed. Note: this harness is not compatible with earlier models.
3. The addition of an electronic control board. A complete description of the operation of this
control board is described below.
Defrost Control
The defrost control is designed to control the removal of ice or frost from the outdoor coil of the
Enviromax Heat Pump. De-icing is initiated at a 30 minute interval, provided the outdoor coil is
below a preset initiation temperature (approximately -2.2°C (28°F).The de-icing cycle is terminated
as soon as the outdoor coil rises to a preset temperature 13.3 °C (56°F) or after a preset length of
time. If the outdoor coil cannot reach the desired preset temperature due to weather conditions,
or a malfunction, a "time-safe" termination will occur after ten minutes. This termination of the
de-ice cycle will restore the heat pump to the normal heat cycle. The defrost will be initiated at
the time interval set as noted above, if the outdoor coil temperature is below -2.2°C (28°F) when
the timer triggers.
Description & Specs
1.1 General Description
Serial Number Date Code
A = January G = July S = 2005
B = February H = August T = 2006
C = March J = September U = 2007
D = April K = October V = 2008
E = May L = November W = 2009
F = June M = December

5Enviromax, 12/06
High Pressure Switch
The high pressure switch is located on the liquid line. It opens at 400 PSIG and closes at 300
PSIG. This protects the EnviromaxHeat Pump if airow is reduced or lost through the heat
transfer surface performing the condenser function. See "Lockout" section below for a complete
description of the operation of the high pressure switch.
Loss of Charge Switch
The loss of charge switch is located on the liquid line. It opens at 35 PSIG and closes at 60 PSIG.
This switch protects the Enviromax Heat Pump if there is a loss of refrigerant. See "Lockout"
section below for a complete description of the operation of the loss of charge switch.
Control Board Modes of Operation
Normal:
24 VAC power must be continuously applied to "R" and "C". Upon a call for cooling "Y" and with
the high pressure switch (HPS) closed, the compressor will be energized. (Note: See the delay on
make feature.) The compressor will remain energized during the 3 minute timed low pressure
by-pass cycle, if the loss of charge (LOC) is open the compressor will de-energize.
Lockout:
If either of the fault conditions (LOC or HPS) occurs twice, the control board will enter into and
indicate the lockout mode. In the lockout mode, the compressor is turned off. If there is a call for
indoorairow"G",theblowerremainsenergized,thealarmoutputisenergizedandthestatus
led will blink to indicate which fault has occurred. When the lockout condition is cleared, the
unit will reset if the demand for the thermostat is removed or when the power is reset. With the
control board, the user can now have normally closed contacts by moving a wire on the control
board. The Enviromax 10 heat pumps are factory wired to be normally open.
Delay on Break:
Ifthecompressorisde-energizedduetoalossofacooling"Y"callortherstfault,theunitre-
start will be delayed 3 minutes from the time the contactor is de-energized. (Note: There is no
delay on break if the lockout condition is reset.)
Delay on Make:
On initial power up only, the unit will wait 0.03 to 10 minutes from the cooling "Y" call before
allowing the contactor to energize.
Low Pressure By-pass Time:
While running or starting, the loss of charge switch (LOC) fault condition will be by-passed for
3 minutes before de-energizing the contactor.
Post Purge:
Uponacallforindoorairow"G"theblowerwillenergizeimmediately.Wheninthecooling
mode, the blower will remain energized for 10 to 90 seconds (adjustable) after the compressor
has been de-energized.

6
Enviromax, 12/06
LED Indicator Lights:
COLOR TYPE STATUS DESCRIPTION
GREEN POWER CONSTANT ON 24 VAC POWER HAS BEEN APPLIED
RED STATUS
CONSTANT ON NORMAL OPERATION
1 BLINK HIGH PRESSURE SWITCH HAS OPENED
TWICE
2 BLINKS LOW PRESSURE SWITCH HAS OPENED
TWICE
LEDs
POST PURGE
WHEEL
DELAY ON MAKE
(COMPRESSOR TIME DELAY)
WHEEL

7Enviromax, 12/06
Model Identication
Air Source Vertical Mobile
Nominal Cooling
36 = 10 kW
System Type - Heat Pump
Power Supply
W = 240V,1ø,50 Hz
AVM C 36 HP W N
15% Fresh Air
Table 1. m3/hr @ ESP (Wet Coil)
Table 2. Filter Size (mm)
1.2 Ratings & Specications
MODEL 0.25 Pa 0.50 Pa 0.75 PA
36 1580 1425 1270
CFM = Cubic Feet per Minute - Indoor Air Flow
ESP = External Static Pressure Pa + m3/hr
MODEL DESCRIPTION TYPE
80140 Return Air Filter*, 750 x 395 x 22mm Spun Filament, Disposable
*Included with return air lter grille.
Refrigerant
R407C
MODEL AVMC36HPWN
SHIP WEIGHT 175 kg
Table 3. Ship Weight

8
Enviromax, 12/06
1.3 General Operation
Refrigerant Cycle (Cooling Mode)
The Enviromax™ HP uses R-407C refrigerant in a conventional vapor-compression refrigeration
cycle to transfer heat from air in an enclosed space to the outside. A blower assembly blows
indoor air across the evaporator. Liquid refrigerant passing through the evaporator is boiled into
gas by heat removed from the air. The warmed refrigerant gas enters the compressor where its
temperature and pressure are increased. The hot refrigerant gas condenses to liquid as heat is
transferred to outdoor air blown across the condenser by the condenser fan. Liquid refrigerant is
metered into the evaporator through capillary tubes to repeat the cycle.
Figure 1. Refrigerant Circuit
Heating Mode
Duringheatingmodeaspecialreversingvalvereversestheowofrefrigerantthroughthesys-
tem exchanging the roles of the condenser and evaporator. Now the outdoor coil becomes the
evaporatorandtheindoorcoilbecomesthecondenser.Therefrigerantthenowsthroughthe
outdoor coil, picks up heat and becomes vaporized. The vapor then enters the compressor where
it is compressed to a higher temperature. Next it is pumped to the indoor coil where the heat will
be released into the room. The compressed refrigerant vapor will condense to its liquid state as
itgivesupheat.Finally,liquidowsthroughthecapillarytubeintotheevaporatorwherethe
cycle will be repeated.
Compressor
Outdoor Coil
Indoor Coil
Filter Drier
Distributor &
Capillary
Tubes
Distributor &
Capillary
Tubes
Heating Mode
Cooling Mode
Discharge Line
Reversing Valve
Check Valve

9Enviromax, 12/06
Figure 2. Typical Electric Schematic for Models AVMC36
1.4 Electrical Diagrams
The compressor is energized with a contactor controlled by a 24 VAC pilot signal (see Figure 2).

10
Enviromax, 12/06
Figure 3. Electrical Box for Models AVMC36

11 Enviromax, 12/06
2.1 Installation Requirements
General
You must consider all of the following when choosing the installation site:
1. Noise. Install the unit so that the least amount of noise will be transmitted to inhabited
spaces.
2. Condensate Drainage. The Enviromax heat pump can produce over 4 litres per hour of
condensate during normal operation. This condensate must be disposed of to a suitable loca-
tion.
3. Placement.
A) Place the unit in a shaded area, if possible. (For units placed outside a building.)
 B) Installitabovegroundforprotectionagainstooding.
 C) Theunitexhaustsair.Besurethattheairowisnotimpededbyshrubberyorother
obstructions.
4. Airow Requirements.Notetheminimumairowrequirements(section2.2).Keepduct
lengthsasshortaspossible.Donotobstructairowthroughtheunit.Ifthecondenserair
discharge is ducted, it must not exceed 5 metres in length. If the supply air is ducted, it must
not exceed 20 metres in length.
5. Clearances.Airowenteringtheoutdoorcoilfromeithersideandexitingthecoilfromthe
front must not be hindered or obstructed. A minimum clearance of 600 mm is recommended
from the front of the unit for service. Service access for the condensate pumps is from the
left side of the unit when facing the supply and return air openings. Access to the indoor coil
is from the top of the unit. In the event that this coil must be replaced or repaired, 600 mm
clearance should be provided from the top of the heat pump or the unit must be removed from
the structure.
6. Codes. Make sure your installation conforms to all applicable electrical, plumbing, building,
and municipal codes. Some codes may limit installation to single story structures.
7. Electrical Supply. The power supply must have the appropriate voltage, phase, and ampacity
forthemodelselected.Voltagemustbemaintainedaboveminimumspeciedvalueslisted
below. Refer to the unit data plate for ampacity requirements.
Table 4. Voltage Limitations
Installation
Electrical Rating Designations* W
Nominal Voltage 240
Phase 50
Minimum Voltage 197
Maximum Voltage 253
* Letters refer to model number code designations. Refer to page 5.

12
Enviromax, 12/06
2.2 Minimum Airow Requirements
TheductsystemmustbeengineeredtoassuresufcientairowthroughtheEnviromax™HP,
evenunderadverseconditionssuchasdirtylters,etc.Properengineeringwillinsurelongevity
and maximum performance from the Enviromax™ HP.
Table 5. Maximum Static Pressure
Basic Model Maximum Total Static - Supply Air Minimum Filter Area
36 .75 Pa 1935 sq. mm.
2.3 Electrical Connections
The Enviromax10 units can operate on voltages from 195 volts to 245 volts. They are factory
wired for operation on a 221 volt to 245 volt power supply. To determine the voltage at your site,
using a voltage meter, carefully measure the voltage at the end of the power receptacle or on the
line side of the disconnect switch located in the electrical box located inside the Enviromax 10
heat pump. If the power supply is 225 volts or less, the toggle switch to the left of the thermostat
on the side of the unit must be placed in the DOWN position. If the voltage is more than 225V,
the toggle switch must be in the UP position.THE INTERNAL TRANSFORMER IS NOT DE-
SIGNED TO POWER OTHER EXTERNAL DEVICES. NOTE: The power must be OFF before
moving the toggle switch.

13 Enviromax, 12/06
2.4 Condensate
The condensate produced during the cooling operation and water produced during the defrost cycle
must be disposed of to a suitable location. To dispose of the water, a pump is factory installed in
the Enviromax heat pump. The water pump is located beneath the outdoor coil in a sump. Water
producedduringthedefrostcyclecollectsinthelowerpanandowsintothesump.Condensate
fromtheupperpanowsdirectlyintothesump.Whentheoatswitchinthepumpcloses,water
ispumpedfromthesumpthroughtubingtothesideoftheheatpump.Tubingshouldbeeld
installedontothettingandthetubingroutedtoasuitablelocationawayformtheheatpump.

14
Enviromax, 12/06
Important: Double-check all electrical connections before applying
power.
3.1 Check Out of Cooling Cycle
Procedure:
1. Set the thermostat "system switch" in the COOL position.
2. Lower the cooling temperature to a setting lower than the room temperature. The compressor,
outdoor fan and indoor fan should cycle on after the time delays have cycled.
3. To stop cooling, slowly raise the thermostat set point to a temperature higher than the ambi-
ent.
If the unit fails to operate, refer to the troubleshooting information in Chapter 4.
Follow the same procedure for additional units.
3.2 Check Out of Heating Cycle
Procedure:
1. Place the thermostat system switch to "Heat".
2. Raise the heating temperature to a setting which is higher than the room temperature. The
fan and compressor should cycle on after time delay has cycled.
3. Move the system switch to the "Off" position. All functions should stop.
Start-Up

15 Enviromax, 12/06
4.1 Overview
A comprehensive understanding of the operation of the Enviromax™ HP is a prerequisite to
troubleshooting. Please read the Chapter 1 for basic information about the unit.
Enviromax™ heat pumps are thoroughly tested before they are shipped from the factory. Of
course, it is possible that a defect may escape undetected, or damage may have occurred during
transportation. However, the great majority of problems result from installation errors.
IfyouexperiencedifcultieswiththeEnviromax™HP,pleasereviewtheinstallationstepsin
Chapter 2.
Much time can be saved by taking a thoughtful and orderly approach to troubleshooting. Start
with a visual check - are there loose wires, crimped tubing, missing parts, etc.? Begin deeper
analysis only after making this initial inspection.
The troubleshooting information in this manual is basic. The troubleshooting section contains
problem / solution charts for general problems, followed by a compressor section.
Not every problem can be anticipated. If you discover a problem that is not covered in this manual,
we would be very grateful if you would bring it to the attention of our service department for
incorporation in future revisions.
As always, please exercise caution and good judgement when servicing the Enviromax™ unit.
Use only safe and proven service techniques. Use safety goggles when servicing the refrigeration
circuit.
The refrigerant circuit has hot surfaces, and the electrical voltages inside of the unit may be
hazardous or lethal. SERVICE SHOULD BE PERFORMED ONLY BY QUALIFIED AND
EXPERIENCED PERSONS.
Troubleshooting

16
Enviromax, 12/06
PROBLEM/SYMPTOM LIKELY CAUSE(S) CORRECTION
A. Unit does not run. 1. Power supply problem.
2. Blown fuse or breaker.
3. Shut off by external thermostat or
thermostat is defective.
4. Internal component or connection failure.
1. Check power supply for adequate phase and voltage.
Check wiring to unit and external breakers or fuses.
2. Check circuit protection devices for continuity.
3. Check operation of thermostat.
4. Check for loose wiring. Check components for failure
B. Unit runs for long
periods or continu-
ously; cooling is
insufcient.
1. Unit undersized for job.
2. Loss of refrigerant.
3. Component failure.
4. Dirty lter or reduced airow.
1. Add additional units for greater capacity.
2. Check for proper charge and possible leak.
3. Check internal components, especially compressor
for proper operation.
4. Check air lter(s). Check blower operation. Remove
airow restriction.
C. Unit cycles on
Compressor Overload
1. Loss or restriction of airow.
2. Restriction in refrigerant circuit.
3. Refrigerant overcharge (following eld
service)
1. Check blower assembly for proper operation. Look
for airow restrictions, e.g., the air lter. Check blower
motor and condenser fan.
2. Check for blockage or restriction, especially lter drier
and capillary tube assembly.
3. Evacuate and recharge to factory specications.
D. Unit blows fuses or
trips circuit breaker.
1. Inadequate circuit ampacity.
2. Short, loose, or improper connection in
eld wiring.
3. Internal short circuit. Loose or improper
connection(s) in unit.
4. Excessively high or low supply voltage..
1. Note electrical requirements in Chapter 2 and correct
as necessary.
2. Check eld wiring for errors.
3. Check wiring in unit. See wiring and schematic dia-
grams. Test components (especially the compressor)
for shorts.
4. Note voltage range limitations specic to the com-
pressor troubleshooting section.
E. Water on oor near
unit or leaking from
cabinet.
1. Obstruction in condensate line.
2. Obstruction or leak in condensate pan.
3. Unit is not level.
4. Defective condensate pump.
1. Check for clog or restriction.
2. Check pan for leak or blockage.
3. Level unit.
4. Replace or repair pump.
4.2 Failure Symptoms Guide

17 Enviromax, 12/06
4.3 Compressor Troubleshooting
NOTE: It is important to rule out other component failures before condemning the compressor.
The following electrical tests will aid diagnosis:
1. Start-Up Voltage: Measure the voltage at the compressor terminals during start-up. The
voltage must exceed the minimum shown in Table 4, section 2.2, or compressor failure is
likely. A low voltage condition must be corrected.
2. Running Amperage: Connect a clamp-on type ammeter to the (common) lead to the com-
pressor. Turn on the supply voltage and energize the unit. The compressor will initially draw
high amperage; it should soon drop to the RLA value or less. If the amperage stays high,
check the motor winding resistances.
NOTE: Feel the top of the compressor to see if it has overheated. If it is hot, the internal
overload may be open. You may have to wait several hours for it to reset.
3. Motor Winding Resistances: Using a digital volt-ohm meter (VOM), measure the resistance
across the compressor windings as shown below.
Resistance can be measured as shown above. Any deviation from above values could indicate
a defective compressor.
4. High Voltage/Insulation Test: Test internal leakage with a megohmeter. Attach one lead to
the compressor case on a bare metal tube and to each compressor terminal to test the motor
windings. A short circuit at high voltages indicates a motor defect. Do not do this test under
vacuum.
5. On single phase models, check the capacitor by substitution.
C
SR
R2R1
R3
SINGLE
PHASE R3 > R2> R1
R3= R2+ R1

18
Enviromax, 12/06
5.1 Scheduled Maintenance
Marvair®strongly recommends that the heat pump be serviced a minimum of once a year. At
thistimethelter,evaporatorcoil,condensercoil,thecabinet,andcondensatedrainsshouldbe
serviced as described below. Also at this time, the heat pump should be operated in the cooling
and heating cycles as described in Chapter 3, Start-Up. In addition to this seasonal check-out,
the Enviromax™ HP should be maintained as follows:
Air Filter
Replacetheairlterwheneveritisvisiblydirty.
Evaporator
If the evaporator becomes clogged or dirty, it may be cleaned by careful vacuuming or with a
commercial evaporator cleaning spray. DO NOT use a solvent containing bleach, acetone, or
ammablesubstances.Turnpoweroffbeforecleaning.Becarefulnottowetanyoftheelectrical
components. Be sure the unit has dried before restarting.
Condenser
Periodically inspect the outdoor condenser coil and the cabinet air reliefs for dirt or obstructions.
Remove foreign objects such as leaves, paper, etc.
If the condenser coil is dirty, it may be washed off with a commercial solvent intended for this
purpose. TURN OFF POWER BEFORE CLEANING! Be sure that all electrical components
are thoroughly dry before restoring power.
Cabinet
The cabinet may be cleaned with a sponge and warm, soapy water or a mild detergent. Do not
use bleach, abrasive chemicals or harmful solvents.
Drains
Regularly check the drain, the upper condensate pan the lower drain pan and the sump. The con-
densateproducedduringthecoolingcyclecollectsintheupperpanandowsthroughtubingintoa
sump located beneath the lower coil. In the heating mode, water produced during the defrost cycle
owsdirectlyintothesump.Apump,locatedinthesump,pumpsthewateroutofsump,through
tubing to the side of the Enviromax heat pump. Check to see that all drain pans, interconnecting
tubingarefreeofanydebrisandwaterowsfreely.Ifacommercialdrainsolventisused,ush
out the drain pan and system with plenty of fresh water to prevent corrosion..
5.2 Winter Storage
If the Enviromax heat pump is to be stored in a site where temperatures can drop to 0ºC or lower,
water in the sump may freeze and damage the pump. To prevent damage to the pump, remove the
drain plug located at the bottom of the sump and allow the water to drain from the sump. Replace
the drain plug after all water is removed from the sump.
Maintenance

19 Enviromax, 12/06
Parts List
6.1 Parts List
Recommended Spare Parts AVMC36HP (N)
Compressor, Scroll 10293
Capacitor, Compressor (50 ufd / 370 Volts) 50 Hz. 50310
Distributor - Indoor 20092 (6)
Orice - Cooling 81222 (.068)
Indoor Coil (6 Circuits, 3CY1202D-28 x 34) 60076
Distributor - Outdoor 20121 (4)
Orice - Heating 20083 (.055)
Outdoor Coil (4 Circuits, 3CY1202D-28 x 34) 60140
Blower Assembly, Indoor 30043A
Motor, Indoor (1/4 HP, 825 cfm) 40079
Capacitor, Indoor (7.5 ufd / 370 Volts) 50238
Motor Mount, Indoor 80455
Motor, Outdoor (1/4HP 825cfm) 40079
Capacitor, Outdoor (7.5 ufd / 370 Volts) 50238
Motor Mount, Outdoor 80420
Fan Blade, Outdoor 30153
Loss of Charge Switch 70050
High Pressure Switch (400 psig) 51726
Sensor, Freeze Stat 70369
Filter Drier (Reversible) 70388
Reversing Valve, RV, V6-412080 20135B
Solenoid Coil, RV 50225B
Contactor, Compressor, 1 Pole, 30 Amps 50077
Low Voltage Transformer (40 VA) 50141
Circuit Breaker, 30 Amp 70171
Thermostat, internal & external 50186
Internal Sensor for thermostat 50189
Filter (750mm x 395mm x 25mm) 80136
Compressor Jacket (Optional) 20044
Switch, Toggle, DPDT for selecting voltage 70027
Block, Terminal, Light Gray 80520 (Three)
Link, Siemens, 500 MM Long Strip 80522
Plug, Siemens, 1 Pin 80523 (Three)
Retainer End, Siemens 80524 (Two)
Din Rail (1.75") 50503
Socket for P/N 50511 24 VAC DPDT Relay 50501
Relay, DPDT, 24 VAC 50511
Control Board 70281
Defrost Control 70378
Defrost Control relay 50200
Line Voltage Receptacle 80539
Unit On/Off Switch 80542
Harness, Control Box to Thermostat Plug 01521
Harness, Thermostat Plug to Thermostat 01520
Harness, 10 Meter Thermostat Extension (Accessory) 01522
Outdoor Drain Pan Pump 50417
Switch, Float, On/Off 70355
Thumb Screw 90987
Sheet Metal & Side Grilles
Top Panel (above outdoor coil) M/04609-GY
Side Panel (side for pump access) M/06076-GY
Top Panel M/05062-GY
Painted Panel with Supply & Return Openings. Slides down from top.l M/05884-GY
Side Panel (side with electrical connections) M/05950-GY
Thermostat Cover M/05952-GY
Side Grille for pump access MC/06043
Side Grille MC-05049
Grilles
Supply Grille 80676
Return Filter Grille 80673
Mounting box/ange for supply grille M/05886-GY
Mounting box/ange for return lter grille M/05887-GY