Heating
& Air Conditioning
(RHA**B*D/VHA**B*A)
®
Remote Heat Pump
Comfort. Quality. Trust.
Table of Contents
Safety Instructions .............................................................2
General ................................................................................3
SHIPPING AND HANDLING ............................................................. 3
LOCATION AND CLEARANCES ...................................................... 3
ROOFTOP INSTALLATIONS ............................................................ 3
APPLICATION NOTE ........................................................................ 3
Refrigerant Piping ..................................................... 3
REFRIGERANT VAPOR AND LIQUID LINE SIZING ....................... 3
REFRIGERANT VAPOR AND LIQUID LINE ROUTING ................... 4
SWEAT CONNECTIONS AT THE UNIT ........................................... 4
Safe Refrigerant Handling ................................................. 4
LEAK TESTING ................................................................................. 5
ID COIL AND LINE SETS EVACUATION.......................................... 5
Step 1. Confirm Proper Pump And Gauge Operation .............. 5
Step 2. Evacuate Lines And Indoor Coil. ................................. 6
Electrical Connections ....................................................... 7
WIRING ............................................................................................. 7
System Startup ...................................................................8
PRELIMINARY CHARGE ADJUSTMENT ......................................... 8
FINAL CHARGE ADJUSTMENT .......................................................8
Matching System ....................................................................... 8
AMANA-Approved Mix-Matched System Combinations ........... 8
ID COIL WITH EXPANSION VALVE ................................................. 8
ID COIL WITH ORIFICE .................................................................. 10
Troubleshooting ...............................................................10
Defrost System ....................................................... 10
Installation Instructions
Affix this manual, Specification Sheet and Users
Information Manual adjacent to the unit.
R
R
C
ATTENTION INSTALLING PERSONNEL
As a professional installer you have an obligation
to know the product better than the customer. This
includes all safety precautions and related items.
Prior to actual installation, thoroughly familiarize
yourself with this Instruction Manual. Pay special
attention to all safety warnings. Often during
installation or repair it is possible to place yourself
in a position which is more hazardous than when
the unit is in operation.
Part No. 10845809 Rev. 1
Printed in USA
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
Remember, it is your responsibility to install the
product safely and to know it well enough to be
able to instruct a customer in its safe use.
Safety is a matter of common sense...a matter of
thinking before acting. Most dealers have a list of
specific good safety practices...follow them.
The precautions listed in this Installation Manual
are intended as supplemental to existing practices.
However, if there is a direct conflict between existing
practices and the content of this manual, the
precautions listed here take precedence.
Goodman Company, L.P.
1810 Wilson Parkway • Fayetteville, Tennessee 37334
www.amana-hac.com
January 2003
Safety Instructions
RECOGNIZE SAFETY SYMBOLS, WORDS, AND LABELS
The following symbols and labels are used throughout this manual to indicate immediate or potential safety hazards. It
is the owner’s and installer’s responsibility to read and comply with all safety information and instructions accompanying
these symbols. Failure to heed safety information increases the risk of personal injury, property damage, and/or product
damage.
WARNING
WARNING - Hazards or unsafe practices which COULD result in severe personal injury or death.
CAUTION
CAUTION - Hazards or unsafe practices which COULD result in minor or moderate personal injury, product damage,
property damage.
WARNING
To avoid personal injury, shock, or death, ensure the electrical
disconnect switch(es) is (are) in the OFF position before installing,
modifying, or servicing the unit. Lock out and tag the switch with
a suitable warning label. Wiring must conform with NEC or CEC
and all local codes.
Safety Guidelines
1. Allow only qualified, experienced technicians to install or service this
unit.
2. Install the system in accordance with all local codes. If no local
codes exist, follow National Codes (NEC in the U.S., CEC in
Canada).
3. Open the electrical disconnect switch(es) before electrically connecting the unit.
4. Before operating the unit, be certain it is properly grounded.
5. The unit contains refrigerant gas under pressure. Avoid puncturing
or breaking any tubing.
6. Before operating the unit, complete the refrigerant connections.
2
General
This manual covers only the installation of the remote heat
pump. See the unit specification sheet for information
regarding accessories.
SHIPPING AND HANDLING
Units are securely packed in shipping containers approved by the International Safe Transit Association. Check
the carton upon arrival for external damage. If damage is
found, file a request in writing for inspection by the carrier
agent immediately. The carrier is responsible for making
prompt inspection of damage and for a thorough investigation of each claim. The distributor or manufacturer will not
accept claims from dealers for transportation damage. If
no damage is found, carefully remove all shipping material
and properly dispose of it.
Keep the unit as upright as possible. Laying the unit on its
side or top could cause equipment damage.
LOCATION AND CLEARANCES
This unit is for outdoor installation only. The unit cannot be
completely enclosed. At least one side must be unrestricted. Refer to Figure 1 for clearances from the sides
and top of the unit to walls and other objects.
NOTE: These minimum clearances do not guarantee
adequate service access. Sufficient clearances for servicing the unit(s) must be provided.
If installing two or more units at the same location, allow at
least 24 inches between the units when using the 6”-12”12” guidelines in Figure 1. The space between two units
may be reduced to 12” if the clearances in Figure 1 are
increased to 12”-24”-24”.
MINIMUM CLEARANCES
12"
5'
12"
6"
DO NOT locate the unit:
– Directly under a vent termination for a gas appliance.
– Within 3 feet of a clothes drier vent.
– Where the refreezing of defrost water would create
a hazard.
– Where water may rise into the unit.
– Where the noise would prove to be a nuisance to the
customer (i.e. windows, patios, decks, etc.)
DO locate the unit:
– With the bottom of the unit at least three inches
above the maximum expected snow accumulation
level.
– In accordance with the minimum clearances described
in Figure 1.
– To minimize the length of refrigerant piping required.
– To provide adequate service clearances.
– On a level concrete pad (or other sturdy, weather
resistant platform).
– Isolated from the building structure to avoid transmis-
sion of vibrations.
NOTE: Short runs of refrigerant piping are better than long
runs. Locate the unit to provide safe access for future
maintenance and service. If possible, discuss unit location
with the owner before proceeding.
ROOFTOP INSTALLATIONS
Before installing this unit on a roof, ensure that the roof will
support the weight of the unit, its platform, and the service
personnel. For the unit weight, see the outdoor unit
specification sheet (all weights are approximate). If there
is doubt about the adequacy of the roof, contact a qualified
architect or structural engineer before installing the unit.
Ensure the unit is placed on a level, weather-resistant
platform.
APPLICATION NOTE
For proper performance, the indoor equipment and ductwork must be adequate for moving about 400 CFM of
indoor air for every ton of cooling capacity to be installed.
If they are not, modify the ductwork or indoor equipment
accordingly.
Refrigerant Piping
SIDE VIEW
Figure 1
REFRIGERANT VAPOR AND LIQUID LINE SIZING
See unit “Specification Sheet” for the required vapor and
liquid line tubing sizes. The listed sizes in the specification
sheet are suitable for line lengths of fifty feet or less and
indoor coil elevations of no more than forty feet above or
below the outdoor unit. NOTE: Unit performance is
affected by vapor line tubing size. A larger than required
vapor line tubing inhibits oil return to the unit. A smaller
than required vapor line tubing size decreases unit performance by up to 10%. If a run of more than fifty feet is
required, contact your Amana distributor for assistance.
Check the indoor coil liquid and vapor line diameter. A
bushing or coupling may be needed to match with the line
3
3
sizes used. If mix-matching to a restrictor orifice indoor
coil, check the “Specification Sheet” for the proper orifice
size to be used with this outdoor unit. Piston orifices are
supplied with the outdoor unit.
Safe Refrigerant Handling
WARNING
REFRIGERANT VAPOR AND LIQUID LINE ROUTING
All of the vapor line must be insulated. The insulation must
include a vapor barrier.
The unit liquid line must be outside the vapor line insulation. If any part of the liquid line runs through an area that
will be hotter than 120°F, that part must be insulated.
Avoid burying refrigerant lines. If you must bury them, first
dig the trench so that it gradually slopes toward the
compressor (at least 1 inch per 10 feet). Then, insulate the
liquid and suction lines separately. Enclose all underground portions of the refrigerant lines in waterproof material (conduit or pipe). If the lines must pass under or
through a concrete slab, be sure they are adequately
protected.
• Seal the holes where the refrigerant piping enters
the building and support piping as necessary.
• Be careful not to kink or dent the refrigerant lines.
Kinked or dented lines will cause poor performance or compressor damage.
CAUTION
To prevent damage to the unit, a bi-flow
filter drier must be installed in the liquid
line.
Install the bi-flow line filter drier shipped with the unit near
the condensing unit or near the indoor coil. A new filter
drier (properly sized and rated for R-22) MUST be installed
with new outdoor units in order for the compressor warranty to remain valid. Any time the refrigeration system has
been opened for service, a new properly-sized bi-flow filter
drier rated for R-22 must be installed.
SWEAT CONNECTIONS AT THE UNIT
NOTE: When brazing, use a brazing alloy of 2% minimum
silver content. Do not use flux.
Before brazing connections, ensure the refrigerant line
ends are cut square, deburred, cleaned, free of nicks or
dents and round. Any other condition would increase the
chance of refrigerant leakage.
During brazing, wrap the component with a wet rag, or use
a thermal heat trap compound as directed by the compound manufacturer, to avoid overheating the service
valve, TXV valve, or filter drier while brazing.
After brazing, quench the joints with water or a wet cloth to
prevent overheating of the service valve. Inspect the paint
finish of the filter drier. The finish must be intact after
brazing. If the paint of the steel filter drier has been burned
or chipped, repaint or treat with a rust preventative. This
is especially important on suction line filter driers which are
continually wet during the unit operation.
To avoid possible explosion, death, or
injury; practice safe handling of
refrigerants.
While these items will not cover every conceivable situation, they should serve as a useful guide.
WARNING
Refrigerants are heavier than air. They can
“push out” the oxygen in your lungs or in
any enclosed space. To avoid possible
death or difficulty in breathing:
• Never sniff a refrigerant.
• Never purge refrigerant into an enclosed
room or space. In fact, all refrigerants
must, BY LAW, be recovered.
• If an indoor leak is suspected, thoroughly
ventilate the area before beginning work.
• Liquid refrigerant can be very cold. To
avoid possible frostbite or blindness,
avoid contact and wear gloves and
goggles. If liquid refrigerant does contact
your skin or eyes, get medical help
immediately.
• Always follow EPA regulations. Never
burn refrigerant, as poisonous gas will
be produced.
WARNING
To avoid possible explosion:
• Never apply flame or steam to a refrigerant
cylinder. If you must heat a cylinder for
faster charging, partially immerse it in
warm water.
• Never fill a cylinder more than 80% full of
liquid refrigerant.
• Never add anything other than R-22 an
R-22 cylinder.
• Store cylinders in a cool, dry place. Never
use a cylinder as a platform or a roller.
4
WARNING
To avoid possible explosion, use only
returnable (not disposable) service
cylinders when removing refrigerant from
a system.
• Ensure the cylinder is free of damage
which could lead to a leak or explosion.
• Ensure the hydrostatic test date does not
exceed 5 years.
• Ensure the pressure rating meets or
exceeds 400 psig.
When in doubt, do not use cylinder.
LEAK TESTING
WARNING
To avoid the risk of fire or explosion, never
use oxygen, high pressure air or flammable
gases for leak testing of a refrigeration
system.
1. Before testing, ensure both hand valves on the gauge
manifold are closed relative to the center port (i.e.,
turned IN all the way.)
2. Attach the gauge manifold to the service valves on the
unit (see Figure 4).
Do not open the unit service valves.
Do not use refrigerant from the unit for leak testing.
The refrigerant in your unit has been precisely measured at the factory for optimum performance.
3. Connect a cylinder of dry nitrogen to the center port on
the gauge manifold.
WARNING
To avoid possible explosion, the line from
the nitrogen cylinder must include a
pressure regulator and a pressure relief
valve. The pressure relief valve must be
set to open at no more than 150 psig.
4. Open the hand valve a minimal amount on the line
coming from the nitrogen cylinder.
5. Open the high pressure valve on the manifold gauge.
Pressurize the refrigerant lines and the indoor coil to
150 psig (1034 kPA). To reach 150 psig, you may
need to further open the hand valve on the nitrogen
cylinder.
WARNING
To avoid possible explosion or equipment
damage, do not exceed 150 psig when
pressure testing.
6. Close the valve on the nitrogen cylinder and disconnect it from the gauge manifold.
7. Check for leaks. Apply a soap solution on all connections and joints. If you see bubbles, you have a leak.
Mark these locations.
NOTE: If you use an electronic leak detector to test for
leaks, add a trace of R-22 to the system (if permitted by
current EPA regulations) before testing.
8. Using the gauge manifold, carefully release the nitrogen from the system. If leaks are found, repair them.
After repair, repeat the above pressure test. If no leaks
exist, proceed to ID Coil and Line Sets Evacuation.
ID COIL AND LINE SETS EVACUATION
THERMOCOUPLE
VACUUM
GAUGE
DIAL-A-CHARGE
TO
RELATED
GAUGE
PORTS OF
COND. UNIT
HIGH VACUUM
MANIFOLD
LARGE DIAMETER
BRAIDED VACUUM
HOSES
A. LOW SIDE VALVE
B. HIGH SIDE VALVE
C. VACUUM PUMP
D. THERMOCOUPLE GAUGE
E. MANIFOLD GAUGE
F. CHAR GING CYLINDER
CHARGING CYLINDER
LOW SIDE
GAUGE
A
HIGH VACUUM PUMP
HIGH SIDE
GAUGE
D
B
C
E
F
Figure 2
Step 1. Confirm Proper Pump And Gauge Operation
a. Connect vacuum pump, high vacuum manifold set
with high vacuum hoses, vacuum gauge and charging
cylinder to unit service valves as shown in Figure 2.
Ensure all manifold valves are fully closed.
b. Open the shutoff valve leading to the vacuum pump
(Figure 2) (C), start the pump, and watch the gauge
manifold. The readings in the gauge manifold should
drop to approximately 29 inches Hg. If this does not
happen, there is probably a leak in the pump and
gauge system. Repair the leak and test again.
c. Open the vacuum gauge valve (D) and evacuate to
250 microns or less. If the system cannot be evacuated, replace the vacuum pump equipment and repeat
steps (a) through (c) again. Otherwise, the pump and
gauge are operating properly and you can continue on
to the next step; evacuating the system. Before
proceeding, be sure to close the valve (D) to the
vacuum gauge to avoid “pegging the meter” and
potential gauge damage.
5
5
Step 2. Evacuate Lines And Indoor Coil.
a. Open the high and low side valves (B & A) on the gauge
manifold. NOTE: Only open the valve (E) on the
gauge manifold leading to the cylinder, not the valve
on the charging cylinder (F).
b. Evacuate the system to about 29 inches Hg as mea-
sured by the low side (compound) gauge.
c. Open the valve (D) to the vacuum gauge. Evacuate
until the gauge reads 250 microns or less.
d. Close the valve to the vacuum pump (C). Wait five
minutes, then check the pressure on the vacuum
gauge:
1. If the pressure is not more than 1500 microns, the
system is leak-free and properly evacuated. Proceed to step (e).
2. If the pressure rises, but holds at about 5000 microns, moisture and noncondensibles are still
present. Open the valve to the vacuum pump (E),
and go back to step (c).
3. If the pressure rises above 5000 microns, a leak is
present. Go back to “Leak Testing” section on page
4.
e. Close the valve to the vacuum gauge.
f. Close the valve to the vacuum pump. Shut off the
pump.
6
Electrical Connections
MAXIMUM ALLOWABLE WIRE LENGTH IN FEET TO LIMIT VOLTAGE DROP TO 2%
MINIMUM CIRCUIT AMPACITY OF OUTDOOR UNIT (MCA)
WIRE SIZE
(AWG)
14
12
10
8
6
N/R = NOT RECOMMENDED
Wire ampacity and voltage drop calculation based on copper conductors with 75 degree C insulation per
1996 National Electrical Code (NEC) Conductors in 86 degree F ambient.
See NEC for ampacity derating for higher ambients.
10
75 60 50 43 37 N/R N/R N/R N/R N/R N/R N/R N/R
118957968595347N/RN/RN/RN/RN/RN/R
18815012510795837568635854N/RN/R
301 241 201 172 150 134 120 109 100 93 86 80 75
471 376 314 269 235 209 188 171 157 145 134 125 118
22.5 25
Table 1
27.5 3012.5 15 17.5 20
4032.5 35 37.5
NOTE: This table is provided as a guide only. Wire
sizing may be regulated by local codes. Local inspection
is the final authority on wire sizing.
WARNING
To avoid personal injury, shock, or death,
open the electrical disconnect switch
before electrically connecting the unit.
Wiring must conform with National
Electrical Code (NEC) or Canadian
Electrical Code (CEC) and all local codes.
The wiring diagram for this unit can be found on the control
box cover. Refer to Figure 3 for field wiring connections.
START CAP
(if present)
RUN CAP
FIELD WIRING
LOW VOLTAGE CONNECTION
W
O
Y
R
C
FHC
CC
PS1
RV
DFS
T1T2
L1
L2
FIELD WIRING
HIGH VOLTAGE CONNECTION
DEFROST
BOARD
START RELAY
(if present)
GROUND LUG
Figure 3
WARNING
To avoid the risk of fire or equipment
damage, use only copper conductors.
WARNING
Undersized wires can cause poor
equipment performance, equipment
damage, or fire. Consult the NEC, CEC or
a qualified electrician for proper wire size.
To avoid personal injury, shock, or death,
be sure wiring to the unit is properly
grounded.
WIRING
Wire size is important to ensure proper unit operation. The
size must be sufficient to carry the minimum circuit ampacity
listed on the unit serial data plate. Amana recommends
sizing the wires to limit the voltage drop to a maximum of
2% from the main breaker or fuse panel to the outdoor unit.
Consult the NEC, CEC, and all local codes to determine
the correct wire gauge and necessary length of run for
proper wiring.
1. To connect unit to power supply, route the power
supply and ground wires through the high voltage
entrance in the unit.
2. Connect the ground wire to the ground lug and power
supply wires to the contactor.
3. Route the low voltage wiring through the low voltage
entrance in the unit.
4. Connect the low voltage wires to the terminal strip (if
present) or to the wire leads. Route the low voltage
wire through the wire tie provided in the unit for
restraint.
5. Connect thermostat to unit. If an Amana approved
room thermostat is not already present, install one at
a suitable indoor location.
Consult the instructions packaged with the thermostat
for mounting and location instructions. For field-supplied low voltage wiring and connections, see the last
section of this manual.
6. Check all factory wiring connections to ensure none
were loosened during shipping and handling.
WARNING
7
7
IMPORTANT: Hard start components are required when
single-phase reciprocating compressors are used with
indoor coils which have thermal expansion valves. Some
units have hard start components factory installed. See
the “Specification Sheet” for hard start component requirements.
System Startup
PRELIMINARY CHARGE ADJUSTMENT
CAUTION
If this unit has a crankcase heater (see
Specification Sheet or wiring diagram) connect electrical power to the unit for four
hours before operating the compressor.
Failure to do so could result in compressor
damage.
IMPORTANT!
During all installation and service work,
follow all regulations of the Environmental
Protection Agency (EPA). This system uses
refrigerant R-22. R-22 is an HCFC
(HydroChloro-FluoroCarbon). It is a
violation of EPA regulations to discharge
HCFC into the atmosphere and doing so
may result in fines or other penalties.
IMPORTANT: If adding refrigerant to a system, add only
refrigerant vapor (not liquid) through the suction valve (low
side) on the outdoor unit. Any other practice may cause
compressor damage.
FINAL CHARGE ADJUSTMENT
Matching System
This final charge adjustment procedure is for the matched
combination listed on the specification sheet.
If the outdoor temperature is 60°F or higher, set the room
thermostat to COOL, fan switch to AUTO, and set the
temperature control well below room temperature.
If the outdoor temperature is below 60°F and you are
installing a matching system, set the room thermostat to
HEAT, fan switch to AUTO, and set the temperature
control well above room temperature.
Measure the low side pressure and temperature from the
pressure tap provided. See Figure 4. Measure the high
side pressure and temperature from the liquid line service
valve.
LOW SIDE
GAUGE PORT
LIQUID LINE
SERVICE VALVE
VAPOR LINE
SERVICE VALVE
After completing system piping, leak testing, and electrical
connections, use an Allen wrench to carefully open the
suction and liquid valves on the unit. These valves do not
back seat.
WARNING
To avoid personal injury or death, open
each valve only until it touches the retainer.
To avoid loss of refrigerant, do not apply
pressure to the retainer.
The outdoor unit is factory-charged with enough R-22 for
the matching indoor blower coil or matching A-coil plus 25
feet of 3/8” liquid line. For liquid line lengths greater than 25
feet, add 0.55 oz. of R-22 per additional foot up to 50 feet.
For line sets over 50 feet consult an Amana distributor. For
liquid line lengths less than 25 feet, subtract 0.55 oz. of R22 per deviating foot.
CAUTION
Using refrigerant that does not meet ARI
Standard 700 may cause compressor damage and void the warranty.
Figure 4
Turn the electrical power on, and let the system run for
several minutes. It will take some time for the refrigerant
pressures to stabilize.
Compare the operating pressures and outdoor unit amp
draw to the numbers listed in the outdoor unit “Specification Sheet”. If pressures and amp draw are too low, add
charge. If pressures and amp draw are too high, remove
charge.
If you are not using the “Matched Combination” which is
listed on the unit "Specification Sheet", check subcooling
(TEV coils) or superheat (flowrator coils) as detailed below.
AMANA-Approved Mix-Matched System Combinations
Use Amana expanded performance multiplier tables in
addition to the following procedures.
8
9
0
°
F
r
o
o
d
n
I
r
o
o
d
n
I
F
85
°
F
°
0
8
r
o
o
d
n
I
r
o
o
d
n
I
F
°
5
7
r
o
o
d
n
I
F
OUTDOOR TEMPERATURE
70°
DESIRED SUPERHEAT vs OUTDOOR TEMPERATURE
36
34
32
30
28
26
24
22
20
50 60 70 80 90 100 110 120
4
6
8
10
12
14
16
18
SUPERHEAT @ O.D. UNIT
9
9
ID COIL WITH EXPANSION VALVE
At stabilized cooling conditions and with an outdoor temperature of 60°F or higher, the subcooling at the outdoor
unit liquid line service valve should be as specified in the
specification sheet. Add or remove charge as required.
FAN
CC
ID COIL WITH ORIFICE
For a proper superheat reading, measure the refrigerant
pressure and temperature at the outdoor unit vapor line
service valve. The superheat should be within 3°F of that
shown on the Desired Superheat vs Outdoor Temperature
chart (see page 9). If the superheat is higher, add charge.
If the superheat is lower, remove charge.
EXAMPLE: The low side pressure is 84 psi. The low side
temperature is 80°F. The outdoor temperature is 95°F.
The indoor temperature is 85°F. By referring to a pressure
temperature chart, you will see that 84 psi equals a
saturated temperature of 50°F. The superheat is 80 - 50
= 30°F. The chart shows a superheat of 20°F is ideal for
these conditions. Since our superheat is 30 - 20 = 10°F
higher than ideal, charge must be added.
If the system is performing properly, reinstall the service
port caps and the valve bonnets. With the valve opened,
the valve bonnet is the primary seal against refrigerant
leaks. See the table below for the torque required for an
effective seal on the valve bonnet (1/6 turn past finger
tight).
Tubing Size Torque (Foot-Pounds)
3/8 10
1/2, 5/8, 3/4 14
7/8, 1 1/8 16
After closing the valve bonnet, perform a final refrigerant
leak test on the valves and sweat connections. Return the
room thermostat to the desired settings.
Troubleshooting
(QUALIFIED SERVICER ONLY)
When troubleshooting, the first step should always be to
check for clean coils, clean filter(s), and proper airflow.
Indoor airflow should be 350 to 450 CFM per ton of cooling,
based on the size of the outdoor unit.
If further information is needed, see the Remote Heat
Pump Service Manual or contact your Amana distributor.
Defrost System
HI-P
LO-P
30
DEFROST TIME
ADJUSTMENT PIN
60
90
DEFROST
BOARD
TEST
CRWOY
RV
DFS
Figure 5
NOTE: If the time select pin remains in test position for 5
minutes, the control will ignore test mode and assume a
normal 90 minute defrost cycle. To over ride this time out,
remove the select pin briefly and replace back on test.
WARNING
To avoid electrical shock or death,
disconnect the power before changing the
defrost time cycle.
If adjustment of the run time appears advisable:
1. Disconnect power to outdoor unit.
2. Move the defrost time adjustment pin from 90 minutes
to 60 minutes or 30 minutes as required (refer to Figure
5).
3. Reconnect the electrical power.
The maximum defrost time is 14 minutes. Most defrost
cycles are shorter.
SERVICING: When servicing, it may be necessary to
rapidly advance the system through a defrost cycle. To do
this:
Place the defrost time adjustment pin on Test. When the
unit starts the defrost cycle, quickly remove the time select
pin to allow normal defrosting and defrost termination to
proceed. The select pin may be reconnected to test or
repeat the defrost cycle, or the pin may be placed in the
desired time setting. (Jumping both test pins with a small
insulated screw driver will also work.)
Your unit is equipped with a time/temperature defrost
board. Defrosting of the outdoor coil is determined by both
coil temperature and compressor run time. See the
“Specification Sheet” for factory settings. Adjustment can
be changed as required. There are 30, 60, and 90 minute
settings available. Adjust only if geographical conditions,
outdoor humidity, or other adverse conditions make it
necessary.
WARNING
To avoid electrical shock or death,
disconnect the electrical power before
servicing.
10
THERMOSTAT* CONNECTIONS TO RH/VH HEAT PUMPS
WITH INDOOR BBA/BBC BLOWER COIL
Room Thermostat
Blower Coil
Remote Unit
Approved Thermostats: 1213403, 1213404, 1213410, 1213406
NOTE: 1. When installing accessories, wiring may have to be modified. Follow the instructions
in the accessory kit’s installation instructions.
R C/X Y O W2 E G
R C Y O W2 E G
R C Y O W
(1)(1)
WARNING
To avoid personal injury, shock or death, disconnect the
electrical power before electrically connecting any
equipment or changing any existing wiring.
11
11
System Checklist
p
®
1 Does the condenser fan blade rotate freely, and is it tight on the shaft?
Does the refrigerant tubing flex freely and not touch another tube to cause rub
2
through?
3 Are both indoor and outdoor sections level?
4 Are the units properly supported?
5 Is outdoor section properly located on concrete base or equivalent?
Are the refrigerant lines correctly installed according to the relative position of the
6
outdoor and indoor sections?
7 Is the refrigerant tubing properly supported by isolation hangers?
8 Is the system completely free of refrigerant leaks?
9 Has the system been properly evacuated?
10 Does the system have the correct refrigerant charge?
Is the outdoor unit protected by the correct size time delay type fuses or breakers in
11
the indoor power box?
12 Are the power supply wires to units the correct size?
13 Are all electrical connections tight?
14 Does the compressor sound normal?
Check the amperage on the indoor blower motor. Is it within the limits shown on
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the name
late of the motor?
16 Are all access panels installed and secured?
Do controls function properly? Are manual reset switches in the reset position (high
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pressure cutouts, relays, etc.)?
Check the voltage with unit running. Does it check within the tolerance of 207 to
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253V for 230V, or 198 to 228V? If using 208V power indoors, have you modified
the transformer wiring as necessary?
19 Has the air flow across the indoor coil been checked and adjusted?
Has the air distribution system been balanced? Are all grilles, diffusers, and
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dampers properly adjusted and locked?
21 Has the system operated at least 30 minutes before leaving the job?
22 Does the owner understand the operation of the unit and the thermostat?
23 Does the owner know where the filters are located?
24 Does the owner know when and how the filter(s) should be cleaned or changed?
25 Have the registration cards been filled out and mailed?
26 Does the owner know whom to call for service?
27 Has the User's Guide been filled out and left with the owner?
is a trademark of Maytag Worldwide N.V. and is
used under license to Goodman Company, L.P. All rights reserved.
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