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Goodman RHA Series Installation Instructions Manual

VHA Series

Made by: Goodman
Type: Installation Instructions
Category: Heat Pump
Pages: 12
Size: 0.63 MB

 

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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.

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.

RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.

Goodman Company, L.P.

1810 Wilson Parkway  •  Fayetteville, Tennessee  37334

www.amana-hac.com

(RHA**B*D/VHA**B*A)

Remote Heat Pump

January 2003

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

C

R

C om fort. Q uality. Tru st.

Heating

®

&

Air Conditioning

Part No. 10845809 Rev. 1
Printed in USA

 


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2

Safety Instructions

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 connect-

ing 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.

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.

 


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3

3

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 duct-
work 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

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 perfor-
mance 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

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 ap-
proved 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 investiga-
tion 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 unre-
stricted.  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 servic-
ing 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”.

12"

12"

6"

MINIMUM CLEARANCES

SIDE VIEW

5'

Figure 1

 


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4

Safe Refrigerant Handling

WARNING

To avoid possible explosion, death, or
injury; practice safe handling of
refrigerants.

While these items will not cover every conceivable situa-
tion, 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.

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.

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 insula-
tion.  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 under-
ground portions of the refrigerant lines in waterproof ma-
terial (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 perfor-
mance 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 war-
ranty 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 com-
pound 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.

 


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5

5

6. Close the valve on the nitrogen cylinder and discon-

nect it from the gauge manifold.

7. Check for leaks.  Apply a soap solution on all connec-

tions 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 nitro-

gen 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

A.  LOW SIDE VALVE
B.  HIGH SIDE VALVE
C.  VACUUM PUMP
D.  THERMOCOUPLE GAUGE
E.  MANIFOLD GAUGE
F.  CHARGING CYLINDER

C

A

B

E

D

HIGH VACUUM PUMP

LARGE DIAMETER

BRAIDED VACUUM

HOSES

TO

RELATED

GAUGE

PORTS OF 

COND. UNIT

HIGH VACUUM

MANIFOLD

LOW SIDE

GAUGE

HIGH SIDE

GAUGE

DIAL-A-CHARGE

CHARGING CYLINDER

THERMOCOUPLE
VACUUM
GAUGE

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 evacu-

ated, 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.

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 mea-

sured 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.

 


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6

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.  Pro-

ceed to step (e).

2. If the pressure rises, but holds at about 5000 mi-

crons, 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.

 


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7

7

Electrical Connections

75

60

50

43

37

N/R

N/R

N/R

N/R

N/R

N/R

N/R

N/R

118

95

79

68

59

53

47

N/R

N/R

N/R

N/R

N/R

N/R

188

150

125

107

95

83

75

68

63

58

54

N/R

N/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

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.

27.5

30

12.5

15

17.5

20

MAXIMUM ALLOWABLE WIRE LENGTH IN FEET TO LIMIT VOLTAGE DROP TO 2%

10

MINIMUM CIRCUIT AMPACITY OF OUTDOOR UNIT (MCA)

40

32.5

35

37.5

WIRE SIZE 

(AWG)

22.5

25

6

14
12
10

8

Table 1

WARNING

Undersized wires can cause poor
equipment performance, equipment
damage, or fire.  Consult the NEC, CEC or
a qualified electrician for proper wire size.

 

WARNING

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-sup-

plied 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.

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)

START RELAY
(if present)

FIELD WIRING
HIGH VOLTAGE CONNECTION

FIELD WIRING
LOW VOLTAGE CONNECTION

GROUND LUG

W

Y
C

R

O

RUN CAP

DEFROST
BOARD

F

H

C

L2

L1

T1

T2

CC

PS1

RV

DFS

Figure 3

WARNING

To avoid the risk of fire or equipment
damage, use only copper conductors.

 


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8

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 require-
ments.

System Startup

PRELIMINARY CHARGE ADJUSTMENT

CAUTION

If this unit has a crankcase heater (see
Specification Sheet or wiring diagram) con-
nect 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.

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 R-
22 per deviating foot.

CAUTION

Using refrigerant that does not meet ARI
Standard 700 may cause compressor dam-
age and void the warranty.

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.

LIQUID LINE   

SERVICE VALVE

VAPOR LINE

SERVICE VALVE

LOW SIDE    

GAUGE PORT

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 “Specifica-
tion 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 be-
low.

AMANA-Approved Mix-Matched System Combinations

Use Amana expanded performance multiplier tables in
addition to the following procedures.

 


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9

9

4

50

60

7

0

80

90

100

1

10

120

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

36

SU

PE

RHEAT

 @ O

.D

. U

NIT

O

U

TD

OO

R

 TE

M

P

E

R

A

T

U

R

E

D

ESI

R

E

D

 SUP

E

RH

EA

T

 v

s

 O

U

TDO

O

R

 TEMP

ER

A

T

U

R

E

90

° 

In

do

or

70°

 F 

In

do

or

75

° F

 In

do

or

80

° F

 In

do

or

85

° F

 In

do

or

 


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10

ID COIL WITH EXPANSION VALVE

At stabilized cooling conditions and with an outdoor tem-
perature 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.

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

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.

C R

W

O Y

DEFROST

BOARD

30

TE

S

T

FAN

CC

HI-P

LO-P

DFS

RV

60

90

DEFROST TIME

ADJUSTMENT PIN

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.)

WARNING

To avoid electrical shock or death,
disconnect the electrical power before
servicing.

 


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11

11

THERMOSTAT* CONNECTIONS TO RH/VH HEAT PUMPS

WITH INDOOR BBA/BBC BLOWER COIL

 

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.

WARNING

To avoid personal injury, shock or death, disconnect the
electrical power before electrically connecting any
equipment or changing any existing wiring.

R C/X  Y  O  W2  E  G

(1)

(1)

Room Thermostat

Blower Coil

Remote Unit

R C  Y  O W2 E  G

R C  Y  O  W

 


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12

System Checklist

1 Does the condenser fan blade rotate freely, and is it tight on the shaft?

2

Does the refrigerant tubing flex freely and not touch another tube to cause rub 
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?

6

Are the refrigerant lines correctly installed according to the relative position of the 
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?

11

Is the outdoor unit protected by the correct size time delay type fuses or breakers in 
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?

15

Check the amperage on the indoor blower motor.  Is it within the limits shown on 
the nameplate of the motor?

16 Are all access panels installed and secured?

17

Do controls function properly? Are manual reset switches in the reset position (high 
pressure cutouts, relays, etc.)?

18

Check the voltage with unit running.  Does it check within the tolerance of 207 to 
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?

20

Has the air distribution system been balanced?  Are all grilles, diffusers, and 
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?

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