Westinghouse WHZ09WMA21S User manual

AIR CONDITIONER
Wall mounted type
REFRIGERANT R410A
INVERTER
SERVICE MANUAL
INDOOR
WHZ09WMA21S WHZ12WMA21S
OUTDOOR
WHZ09SZA21S
WHZ12SZA21S
, WESTINGHOUSE, and INNOVATION YOU CAN BE SURE OF are trademarks of Westing house
Electric Corporation. Used under license by FUJITSU GENERAL AMERICA, INC. All Rights Reserved.
2021.12.13

Please Read Before Starting
This air conditioning system meets strict safety and operating standards. As the installer or service
person, it is an important part of your job to install or service the system, so it operates safely and
efficiently.
For safe installation and trouble-free operation, you must:
●
Carefully read this instruction booklet before beginning.
●
Follow each installation or repair step exactly as shown.
●
Observe all local, state, and national electrical codes.
●
Pay close attention to all warning and caution notices given in this manual.
This symbol refers to a hazard or unsafe practice which can result in severe
personal injury or death.
This symbol refers to a hazard or unsafe practice which can result in personal
injury or product or property damage.
If Necessary, Get Help
These instructions are all you need for most installation sites and maintenance conditions. If you
require help for a special problem, contact our sales/service outlet or your certified dealer for
additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper installation or maintenance service,
including failure to follow the instructions in this document.
SPECIAL PRECAUTIONS
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.
●
Do not supply power to the unit until all wiring and tubing are completed or reconnected and
checked.
●
Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram
and these instructions when wiring. Improper connections and inadequate grounding can cause
accidental injury or death.
●
Ground the unit following local electrical codes.
●
Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible
fire hazard.
When Transporting
Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend
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Notices:
• Product specifications and design are subject to change without notice for future improvement.
• For further details, please check with our authorized dealer.

your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air
conditioner can cut your fingers.
When Installing
●
In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary to
construct a strong
wood or metal frame to provide added support.
●
In a Room
Properly insulate any tubing run inside a room to prevent
“
sweating” that can cause dripping and
water damage to walls and floors.
●
In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit.
This prevents water damage and abnormal vibration.
●
In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.
●
In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.
When Connecting Refrigerant Tubing
△
Use the flare method for connecting tubing.
△
Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting
them, then tighten the nut with a torque wrench for a leak free connection.
△
Check carefullyfor leaks before starting the test run.
When Servicing
△
Turn the power OFF at the main power box (mains) before opening the unit to check or repair
electrical parts and wiring.
△
Keep your fingers and clothing away from any moving parts.
△
Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have
been left inside the unit being serviced.
Others
△
Ventilate any enclosed areas when installing or testing the refrigeration system. Escaped
refrigerant gas, on contact withfire or heat, can produce dangerously toxic gas.
△
Confirm upon completing installation that no refrigerant gas is leaking. If escaped gas comes in
contact with a stove, gas water heater, electric room heater or other heat source, it can produce
dangerously toxic gas.
NOTE:
The figure, size and parameter of the product may not be identical with the service manual, please
take the actual product as the standard.
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Specifications
Type
Wall mounted
Inverter heat pump
Model name WHZ09WMA21S WHZ12WMA21S
Power supply 208/230 V ~ 60 Hz
Power supply intake Outdoor unit
Available voltage range 187—253 V
Capacity
Cooling
Rated kW 2.64 3.52
Btu/h 9,000 12,000
Min.—Max. kW 1.06—2.93 1.17—3.96
Btu/h 3,600—10,000 4,000—13,500
Heating
Rated kW 3.08 3.81
Btu/h 10,500 13,000
Min.—Max. kW 1.06—3.08 1.17—4.10
Btu/h 3,600—10,500 4,000—14,000
Input power
Cooling Rated
kW
0.560 0.780
Min.—Max. 0.100—1.060 0.130—1.280
Heating Rated 0.770 0.855
Min.—Max. 0.130—1.220 0.170—1.430
Current Cooling Rated A 2.3 4.6
Heating 3.4 4.8
EER Cooling W/W 4.71 4.51
Btu/hW 16.07 15.40
COP Heating W/W 4.00 4.45
Btu/hW 13.64 15.20
SEER Cooling Btu/hW 28.0 25.0
HSPF Heating Btu/hW 12.5 12.0
Power factor Cooling %97 96
Heating 97 97
Moisture removal pints/h (L/h) 1.9 (0.9) 2.5 (1.2)
Maximum operating current*1Cooling A6.5 7.0
Heating 6.5 7.0
Fan
Airflow rate
Cooling
HIGHER
CFM (m3/h)
394 (670) 618 (1,050)
HIGH 365 (620) 559 (950)
MED 294 (500) 483 (820)
LOW 235 (400) 453 (770)
LOWER 224 (380) 365 (620)
Heating
HIGHER 394 (670) 618 (1,050)
HIGH 365 (620) 559 (950)
MED 294 (500) 483 (820)
LOW 235 (400) 453 (770)
LOWER 224 (380) 365 (620)
Type × Q'ty Crossflow fan × 1
Motor output W 25 35
Sound pressure level*2
Cooling
HIGHER
dB (A)
42 48
HIGH 39 46
MED 34 41
LOW 31 37
LOWER 28 30
Heating
HIGHER 42 48
HIGH 39 46
MED 34 41
LOW 31 37
LOWER 28 30
Heat exchanger type
Dimensions (H × W × D) in (mm) 11-9/16 × 24-7/16 × 1-1/16 (294 × 620 × 27.2) 14-7/8 × 27-3/4 × 1-1/16 (378 × 705 × 27.2)
Fin pitch FPI 18
Rows × Stages 2 × 14 2 × 18
Pipe type Copper
Fin type Aluminum
Enclosure Material Polystyrene
Color White
Dimensions
(H × W × D)
Net in (mm) 10-5/8 × 33-7/16 × 8-7/16 (270 × 850 × 215) 12-3/8 × 37-13/16 × 9-5/16 (315 × 960 × 236)
Gross 13-3/16 × 37 × 10-7/16 (335 × 940 × 265) 15-3/8 × 40-15/16 × 12-7/16 (390 × 1,040 × 316)
Weight Net lb (kg) 20 (9) 29 (13)
Gross 24 (11) 33 (15)
Connection pipe Size Liquid in (mm) Ø1/4 (Ø6.35) Gas Ø3/8 (Ø9.52)
Method Flare
Drain hose Material PE/PVC
Tip diameter in (mm) Ø5/8 (Ø15.4) (I.D.), Ø7/8 (Ø23) (O.D.)
Operation range Cooling °F (°C) 61 to 86 (16 to 30) %RH 80 or less
Heating °F (°C) 61 to 86 (16 to 30)
Remote controller type Wireless (Wired [option])
NOTES:
•Specifications are based on the following conditions:
– Cooling: Indoor temperature of 80 °FDB (26.67 °CDB) /67 °FWB (19.44 °CWB), and outdoor temperature of 95 °FDB (35 °CDB) / 75 °FWB (23.9 °CWB).
– Heating: Indoor temperature of 70 °FDB (21.11 °CDB) /59 °FWB (15.56 °CWB), and outdoor temperature of 47 °FDB (8.33 °CDB) /43 °FWB (6.11 °CWB).
– Pipe length: 25 ft (7.5 m), Height difference: 0 ft (0 m). (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *1: Maximum current is maximum value when operated within the operation range.
• *2: Sound pressure level:
– Measured values in manufacturer’s anechoic chamber.
– Because of the surrounding sound environment, the sound levels measured in actual installation conditions might be higher than the specified values here.
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Type Inverter heat pump
Model name WHZ09SZA21S WHZ12SZA21S
Power supply 208/230 V ~ 60 Hz
Available voltage range 187—253 V
Fan
Airflow rate CFM (m3/h) 1,177 (2,000)
Type × Q'ty Propeller fan × 1
Motor output W 30
Sound pressure level *1dB (A) 55
Heat exchanger type
Dimensions
(H × W × D) in (mm) 33-1/16 × 21-1/2 × 11/16 (840 × 546 × 18.19) 33-1/16 × 21-1/2 × 11/16 (840 × 546 × 18.19)
33-1/16 × 21-1/2 × 11/16 (840 × 546 × 18.19)
33-1/16 × 21-1/2 × 11/16 (840 × 546 × 18.19)
19-11/16 × 16-9/16 × 11/16 (500 × 420 × 18.19)
Fin pitch FPI 18
Rows × Stages 2 × 26 2.5 × 26
Pipe type Copper
Fin type Type (Material) Aluminum
Surface treatment Blue fin
Compressor Type Rotary
Refrigerant
Type R410A
Charge lb oz 2 lb 7 oz 2 lb 14 oz
g 1,100 1,300
Refrigerant oil Type VG74 (POE)
Enclosure Material Steel sheet
Color White
Dimensions
(H × W × D)
Net in (mm) 23-1/16 × 31-7/8 × 11 (585 × 810 × 280)
Gross 25-3/16 × 37 × 15-3/16 (640 × 940 × 385)
Weight Net lb (kg) 75 (34) 84 (38)
Gross 82 (37) 93 (42)
Connection pipe
Size Liquid in (mm) Ø1/4 (Ø6.35)
Gas Ø3/8 (Ø9.52)
Method Flare
Pre-charge length
ft (m)
24.6 (7.5)
Max. length 65 (20)
Max. height difference Indoor unit higher than outdoor unit: 32 (10)
Outdoor unit higher than indoor unit: 16 (5)
Operation range Cooling °F (°C) -0.4 to 115 (-18 to 46)
Heating -13 to 75 (-25 to 24)
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 80 °FDB (26.67 °CDB) / 67 °FWB (19.44 °CWB), and outdoor temperature of 95 °FDB (35 °CDB) / 75 °FWB (23.9 °CWB).
– Heating: Indoor temperature of 70 °FDB (21.11 °CDB) / 59 °FWB (15 °CWB), and outdoor temperature of 47 °FDB (8.33 °CDB) / 43 °FWB (6.11 °CWB).
– Pipe length: 24 ft 6 in (7.5 m), Height difference: 0 ft (0 m). (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *1: Sound pressure level
– Measured values in manufacturer’s anechoic chamber.
– Because of the surrounding sound environment, the sound levels measured in actual installation conditions might be higher than the specified values here.
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Dimensions
Model: WHZ09WMA21S
Unit: in (mm)
Air inlet
Tube exit
Drain port:
Ø11/16 (18)
7-3/16
(183.2)
33-7/16 (850)
1-3/8 (35)
8-15/16 (227)
10-5/8 (269.9)
1-11/16 (43)
11/16 (17)
8-7/16 (214.6)
28-7/16 (723)
3-5/8 (92)
2-1/2
(63.5)
1-13/16 (46.5)
2-3/4 (70)
Ø2-3/4 (70)
23-5/16 (592)
Outline of indoor unit
Bottom view
Side view Side view Front view
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Model: WHZ12WMA21S
Unit: in (mm)
Air inlet
1-7/8 (47)
12-1/8 (307.2)
10-5/16 (262)
5/8 (16)
9-5/16 (236)
3-1/8
(79)
31-9/16 (801)
Tube exit
36 (914)
37-13/16 (960)
4 (102)
2-1/16 (53)
12-3/8 (315)
Drain port:
Ø11/16 (18)
Bottom view
Side view Side view
Top view
Front view
1-9/16 (40)
5-3/8 (137)
Ø2-3/4 (70)
24-3/4 (629)
Outline of indoor unit
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Installation space requirement
Provide sufficient installation space for product safety.
Distance from the ceiling
should be over 200 mm/7.9 in
Distance from the wall
should be over 50 mm/2 in
Distance from the obstacle
should be over 3.0 m/10 ft
Distance from the floor
should be over 2.4 m/8 ft
Distance from the wall
should be over 50 mm/2 in
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Models: WHZ09SZA21S and WHZ12SZA21S
Unit: in (mm)
11 (280)
23-1/16 (585)
31-7/8 (810) 3 (75.56)
12-3/16 (310)
20-1/16 (510)
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Installation space
Models: WHZ09SZA21S and WHZ12SZA21S
¢Space requirement
Provide sufficient installation space for product safety.
CAUTION
Keep the space shown in the installation examples.
If the installation is not performed accordingly, it could cause a short circuit and result in a lack of
operating performance.
Distance from the obstacle
should be over 500 mm/20 in
Air intake distance from the wall
should be over 250 mm/10 in
Air outlet distance from the wall
should be over 500 mm/20 in
Air intake distance from the wall
should be over 250 mm/10 in
over 250 mm/10 in
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