NCP NCHP-018 User manual

National Comfort Products
539 Dunksferry Road • Bensalem, PA 19020 • [phone] • 1-800-523-7138 • Fax: [phone]
SPLIT-SYSTEM HEAT PUMP INSTALLATION INSTRUCTIONS 1000 3000 SERIES
Before Installing Unit
Check all local codes and ordinances that could affect in-1.
stallation. The manufacturer assumes no responsibility for
equipment installed in violation of any code requirements.
Be sure that the electrical data specied on the unit rating 2.
plate corresponds to what is available at the installation site
and NEC for installation requirements.
Be sure that the electrical service provided to the building 3.
can handle the load imposed by the unit.
This unit should be installed in an outside wall for thru-the-4.
wall installation ONLY.
NCP heat pumps may be used with indoor evaporator coils5.
utilizing various expansion devices (TXV, capillary tube,
orice piston). Self-equalizing components are required
to reduce compressor starting problems. If self-equalizing
components are not used, eld installed hard start kits will
be required.
Hard start kits must be compatible with Bristol compres-
sors.
Start Cap for Various Sizes µFd/Volts
18,000 BTU 145-175/250
24,000 BTU 145-175/250
30,000 BTU 145-175/250
Start relays to be sized to µFd of capacitor used.
The NCP heat pump is provided with a condensate pan in-6.
cluding a 3/4” MPT drain connection. Provisions must be
made for eld piping to the building drain system for con-
densate disposal in accordance with local codes. Field pip-
ing to the drain connection must be pitched down and may
be done through the rear ange of the unit.
The unit must be installed with the top level front to rear7. and
left to right.
In thru-the-wall installation, due to the various types of wall con-
struction, it is not possible to provide detailed instructions. The
following is a list of general requirements and cautions for in-
stalling these units.
Masonry walls must have a lintel to support the wall.1.
Extend the unit approximately 3/4” beyond outside surface 2.
of the wall. Optional mounting angles can be purchased
from the factory or eld fabricated for locating and mounting
the unit in the wall.
Step 1 - Thru-the-Wall Installation
The wall opening across the top and bottom must be 3.
ashed. Bottom ashing to cover the full foot print of unit
and extend up 2’’ on 3 sides. All openings around the top,
sides and bottom must be caulked and sealed. Care must
be taken not to plug the openings in the front of the base
pan of the unit.
If the optional wall sleeve is used, caulk the spaces between the
sleeve and the wall. Completely ll the clearance between the
unit and the wall sleeve with a polyurethane foam sealant (Fol-
low manufacturer’s suggested application manual).
During periods of rain and wind the primary drainage path 4.
may not be adequate to handle the load. Secondary pre-
cautions may also be required but not limited to the follow-
ing:
a. Seal ashing to unit
b. Floor drain
c. Additional eld sealing of sheet metal joints
d. Sealing of unused access opening
Clearances to air inlets and outlets must be adequate to en-5.
sure no air ow obstructions or recirculation of heat pump
air ow.
Some architectural designs of buildings will require the unit 6.
to be mounted behind a decorative grille. The performance
(capacity and efciency) of the unit may be reduced with
the use of these decorative grilles.
The less resistive these grilles are to air ow, the better the units
performance will be.
Outdoor louvers provided by others must be approved by NCP
to maintain unit performance and warranty. Care must be taken
to locate coil intake side of unit away from loose debris that may
clog intake.
If the unit is mounted behind a decorative grille, one or both 7.
of the following items must be done to eliminate recircula-
tion of air to the unit:
a. The front of the unit must be mounted tight to the inside
of the architectural grille
b. A barrier must be provided to prevent recirculation of air
to the unit (mixing of inlet and outlet air) when the front
of the unit is mounted back from the inside of the arch-
tectural grille
The unit8. must not be mounted in dead-end hallways or ar-
eas where there is no fresh outside air circulation. Cool
fresh outside air must be provided for best unit operation.
Thru-the-wall units may not be located where hot exhausts
from clothes dryer vents, kitchen vents, steam vents or cor-
rosive fumes could come in contact with coil side of unit.
THE UNIT MUST NEVER BE PLACED ON ITS SIDE OR UPSIDE DOWN AS THE COMPRESSOR OIL WILL RUN IN THE COOLING
CIRCUIT AND SERIOUSLY DAMAGE THE UNIT. BASE PAN MUST ALWAYS BE ON THE BOTTOM OF THE INSTALL.
1
14299605 09/09

c. Braze the liquid line to the service valve. Allow the ni-
trogen to keep owing when brazing the refrigerant
line until all brazed joints are completed.
d. Carefully remove the rubber plugs from the evaporator
liquid and vapor connections. Use caution as the
evaporator is pressurized.
e. At a convenient location in the liquid line, install and
braze a biow lter drier (Sporlan #HPC-103-C or simi-
lar).
f. Braze the liquid line to the evaporator liquid connection
g. Braze the vapor line to the evaporator vapor connection
h. Provide a heat sink to the vapor line service valve of
the heat pump unit
i. Braze the vapor line to the service valve
When tubing installation is completed, seal openings around 5.
tubing where tubing enters the unit cabinet.
Standard refrigeration piping practices must be employed 6.
when installing traps. When installing the condenser be-
low the evaporator, the suction line must be trapped with
an inverted trap the height of the evaporator coil. Consult
the factory when total equivalent length of refrigerant lines
exceed 50 ft.
Leak checking of refrigerant line braze joints and evapora-
tor unit using dry nitrogen.
Install service port cap of the vapor line service valve (cap 1.
was removed for brazing operations).
Connect dry nitrogen source to the service port of the liquid 2.
line service valve. Pressurize refrigerant lines and indoor
coil to approximately 100 PSIG.
Check for leaks using a liquid soap solution. If any leaks are 3.
located, purge the nitrogen, repair the leak(s) and repeat
the leak check procedure.
Leak checking of refrigerant line braze joints and evapora-
tor unit using R-22 refrigerant.
Connect R-22 source to the service port of the liquid line1.
service valve. Use of a manifold gauge set will facilitate
connecting and disconnecting of the refrigerant source for
leak checking. Pressurize refrigerant lines and indoor coil
with refrigerant gas.
Leak check with a electronic leak detector or liquid soap so-2.
lution. If any leaks are detected, use a refrigerant recovery
system to remove the refrigerant. Repair the leak(s) and
repeat the leak check procedure.
Step 2 - Installing Refrigerant Lines
30” clearance is required for service accessibility on the inside.
If more than one unit is to be installed in the same area a min.
of 48’’ vertical must be maintained between units to minimize
recirculation of condenser exhaust air.
Important:
The outdoor unit is fully charged at the factory for the recom-
mended model of indoor unit. With other models of indoor units
the charge must be adjusted. Be sure both service valves are
closed during tubing installation and leak checking to avoid loss
of charge. A biow liquid lter drier must be installed in the
liquid line (SPORLAN #HPC-103-C or similar).
The unit has internally mounted service valves. Field tub-1.
ing may be routed through the locations provided in either
the top or rear ange. Care should be taken not to block ac-
cess to internal components. Seal unused knockouts with
high grade sealant. Gaskets are provided for liquid and
suction lines.
NOTE: Always use refrigeration grade copper tubing that
is internally clean and dry for refrigerant lines. Use clean
hard drawn copper tubing if no appreciable amount of
bending is necessary. If soft copper is used, avoid sharp
bends which may cause a restriction. Always use heat
sink materials during brazing to prevent damage to service
valves (see Figure 1).
Run refrigerant lines as directly as possible. Field piping in-2.
side the heat pump should not block access to major com-
ponents. Refrigerant lines should not be in direct contact
with the oor or ceiling joists. Use insulated or suspension
type hangers. When refrigerant lines run through a wall,
seal openings around the lines with a exible material to
avoid vibration to the structure.
Insulate the vapor line with a minimum 1/2” foam rubber or 3.
other type insulation having an adequate vapor barrier. For
indoor units with a TXV, a liquid line lter drier must be
installed (SPORLAN #C-083-S or similar).
Caution: Dry nitrogen should always be supplied through
the tubing while it is being brazed, as the high temperature
required for brazing will cause oxidation of the copper un-
less an inert atmosphere is provided. The ow of dry nitro-
gen should continue until the joints have cooled. Always
use a pressure regulator and safety valve to ensure that
only low pressure nitrogen is introduced into the tubing.
Only a small ow is necessary to displace air and prevent
oxidation.
Install the refrigerant lines using the following procedure 4.
(see also: Figure 1).
a. Remove the service port caps and Schrader Cores of
the liquid line service valve and the vapor line service
valve of the heat pump unit. Connect low pressure dry
nitrogen to the liquid line valve service port.
b. Provide a heat sink at the service valve such as
wrapping a wet rag around it, to prevent damage
during the brazing operation
Step 3 - Leak Checking
2

Figure 1 - Installing Refrigerant Lines
Field Installation:
Install the outdoor and indoor units
per the manufacturer’s recommendations.
Route the copper lines between the units.
3
Step 1: The tubing should be cut
square. Make sure it is round
and free of burrs at the con-
necting ends. Clean the tub-
ing to prevent contaminants
from entering the system.
Step 3: Flux the copper tube and in-
sert into the stub. Braze the
joint. No ux is necessary if a
low to zero-silver braze alloy
is used.
Step 5: This is not a back seating
valve. To open the valve re-
move the valve cap with an
adjustable wrench. Insert a
3/16” or 5/16” hex wrench into
the stem. Back out counter-
clockwise until the valve stem
just touches the retaining
ring.
Step 2: Wrap a wet rag around the
copper stub before brazing.
Step 4: After brazing, quench with a
wet rag to cool the joint and
remove any ux residue.
Evacuate, purge or charge
the connecting lines per the
unit manufacturer’s instruc-
tions.
Step 6: Replace the valve cap nger
tight then tighten an addi-
tional 1/12 turn or 1/2 hex at.
A metal-to-metal seal is now
complete. Complete normal
factory recommended proce-
dures.

Connect the vacuum pump to the service ports of the liquid1.
line and the vapor line service valves. If the vacuum pump
lines do not contain shut-off valves, hook up the vacuum
pump through a manifold gauge set, as the vacuum pump
lines must be closed for step 4 below.
a. If the evacuation is being performed on a new system
installation, the condensing unit service valves should
be kept in the closed position. The vacuum pump will
then be able to evacuate the refrigerant lines and
evaporator coil.
b. If the evacuation is being performed on an installation
where the condensing unit factory charge has been
lost, the service valves should be opened.
Following the vacuum pump manufacturer’s instructions, 2.
allow the pump to operate until the system has been evacu-
ated down to 300 microns.
NOTE: Check for leaks if unable to get to 300 microns
Allow the pump to continue running an additional 15 min-3.
utes. Turn off the pump and leave connections secured. Af-
ter 10 minutes if system fails to hold 500 microns or less,
check all connections for tight t and repeat evacuation
procedure.
Isolate the vacuum pump by closing the shut-off valves on 4.
vacuum pump lines or test gauge manifold.
Open the service valves. Opening the service valves will 5.
allow the refrigerant in the condensing unit to enter the re-
frigerant lines and evaporator coil. The vacuum pump can
now be disconnected.
The heat pump comes from the factory pre-charged for the heat
pump, recommended evaporator coil, and the 10 feet of refriger-
ant lines. If the actual line length is greater or less then 10 feet,
add or remove refrigerant at the rate of 0.7 ounces per foot.
If the heat pump charge was lost for any reason, add factory
refrigerant charge listed on heat pump unit data plate, plus ad-
justments described above.
If the unit is operating during charge adjustment, the access
panel must be in place to prevent high head pressure which
would shut down the unit.
Connect the charging cylinder to the manifold gauge set. 1.
Open the charging cylinder valve and bleed air out of the
charging hose at the manifold gauge set connection.
Tighten the manifold gauge set charging connection. Open 2.
the main manifold gauge set valve and introduce refrigerant
into the system.
Step 4 - Evacuation
Step 5 - Refrigerant Charging
NOTE: If the system is being charged in the cooling cycle,
proceed with the gauge hoses connected to the service
valve gauge port.
When the correct refrigerant charge level is obtained, re-3.
move the manifold gauge set.
Replace the gauge port caps.4.
Permanently stamp the unit data plate with the total amount of
refrigerant in the system.
ARI Rating Conditions
To obtain maximum performance, see chart on page 6.
NOTE: Make certain that the volts, hertz, and phase cor-
respond to that specied on the unit rating plate, and
that the service provided by the utility is sufcient to
handle the additional load imposed by this equipment.
Make all electrical connections in accordance with the National
Electrical Code and any pertinent local codes or ordinances.
Use a separate branch electrical circuit for this unit. Locate a
disconnecting means within sight of and readily accessible to
the unit.
A. Line Voltage Connections (see Figure 2)
a. Connect the single phase power supply to unit contactor
terminal L1 and L2
b. Connect ground wire to lug
B. Low Voltage Connections (see Figure 2)
Consult the indoor unit installation instructions for thermostat
connections. Use a 2-wire thermostat cable between the out-
door and indoor units.
When locating the room thermostat, it should be in the natural
circulating path of room air. Avoid locations where the thermo-
stat would be exposed to cold air inltration; drafts from win-
dows, doors or other openings leading to the outside; exposure
to air currents from warm-or-cold air registers or to exposure
where the natural circulation of the air is cut off, such as behind
doors, above or below mantels, shelves, etc.
Step 6 - Electrical Connections
4

Sequence of Operations
5
On a “call for cooling”, the thermostat “makes” circuits R-O, R-G,
and R-Y.
Circuit R-G energizes the indoor blower motor relay. Circuit R-O
energizes the reversing valve. Circuit R-Y energizes the contac-
tor starting the compressor and outdoor fan.
When the thermostat is satised, the contacts open, de-energiz-
ing the indoor blower relay, contactor, and reversing valve. The
indoor and outdoor fans and compressor will stop.
On a “call for heating”, the room heat pump thermostat “makes”
circuits R-G and R-Y. Circuit R-G energizes the indoor blower
motor relay. Circuit R-Y energizes the contactor starting the
compressor and outdoor fan. The reversing valve will not be
energized and the system will be in the heating mode. When
the room heat pump thermostat is satised, the contacts open,
de-energizing the indoor blower relay and contactor. The indoor
and outdoor fans and compressor will stop. When the indoor
thermostat is calling for heat (24VAC signal at the Y terminal),
the board begins monitoring the DFT terminal to determine if
the defrost sensor is calling for a defrost cycle. Once the board
sees a 24VAC signal at the defrost terminal, it recognizes that
the coil is cold enough to form ice and begins accumulating the
30, 50, or 90 minute compressor run time (factory set at 50 min-
utes adjusting of this may be necessary to provide complete de-
frost for you climate zone). This time is only accumulated while
the compressor is running and the defrost sensor is closed. If
the selected time is reached and the defrost sensor is still call-
ing while the compressor is running, the control will enter a de-
frost cycle. During a defrost cycle, the board will shut down
the condenser fan by opening the OF1 and OF2 terminals and
energize the reversing valve via the O terminal to enter a hot
gas defrost. It will stay in the defrost cycle for a maximum of 10
minutes, but will exit the defrost cycle if the defrost thermostat
is satised anytime before that 10 minutes expires. Upon exit-
ing the defrost cycle, the board will turn off the reversing valve
and close the OF1 and OF2 contacts to allow the fan to resume
operation.
If the outdoor temperature is cold enough to produce icing on
the outdoor coil during the heating mode (approximately 34°),
the condensate heater will be energized through the heater
thermostat located in the control box. This heater stays ener-
gized during cold weather to keep any defrosted water from re-
freezing in the pan. The condensate pan under the coil must
be piped per item number 6 under the “Before Installing Unit”
section of this manual.
Periodically clean the inside of the unit to keep the weep holes in
the base pan and in the fan scrolls open to assure proper drain-
age of water from the unit.
Step 7 - Maintenance
To verify proper operation of the defrost system, turn off the
power to the unit. Remove the rear access panel. Disconnect
the black wire (coming from the common terminal of the Com-
pressor) from the T2 screw terminal on Contactor 2A and tem-
porarily insulate it. To enter test mode, you must short across
the test terminals. Turn the power back on and then call for Y,
HPS and LPS switches closed, call for DFT and the unit will en-
ter a defrost cycle. Note the unit will enter a 5-second anti-short
cycle delay if Y is interrupted. When the test pins are shorted,
the board reduces all timing functions by a factor of 256. That
means the 10 minute defrost cycle is reduced to 2.34 seconds
and the 30, 50, 90 minute times are reduced to 7.03, 11.72,
and 21.09 seconds respectively. All other functions of the board
remain the same. If you wish to test it, you should short the test
pins, make sure it’s calling for heat, and if the defrost sensor
is not closed, you can put a jumper from R to DFT to simulate
a defrost call. With this test you should see the board rapidly
cycle in and out of defrost mode verifying that it works properly
and is responding to all inputs accurately. To avoid over-heating
the outdoor blower motor, because the access cover has been
removed, limit the test to three cycles.
To return the heat pump to normal operation, turn off power to
the unit and reset the room thermostat to the normal heat set-
ting. Remove any temporary jumpers from the defrost control.
Reconnect the black wire from the common terminal of the com-
pressor to screw terminal T2 on contactor 2A. Install the rear
access cover. Turn on power to the unit.
Operation of Defrost Control 6TT-3

6
Fixed Orice Fed Indoor Coil Charging by Superheat Table - Cooling Mode Only
&
R/H
65 76 16 8 555555 55 5
70 57 17 9 555555 55 5
80 30 19 12 855555 55 5
85 21 21 14 10 6 5555 55 5
65 85 13 955555 55 55
70 64 16 12 855555 55 5
85 26 20 17 13 10 6555 55 5
11595 100 105 11075 80 85 90
Indoor Outdoor Ambient
WB DB 65 70
76
78
80
68
70
72
74
60
62
64
66
75 49 18 15 11 7 5555 55 5
70 72 23 19 15 12 8555 55 5
75 41 18 10 6 5555 55 55
80 36 19 15 12 8555 55 55
75 56 24 21 17 14 10 75 55 55
80 42 25 22 19 16 13 96 55 55
85 31 26 23 20 17 13 10 7 55 55
70 81 26 22 19 15 12 95 555 5
75 63 26 23 20 16 13 13 10 7 55 5
80 48 29 26 23 20 17 14 11 8 55 5
90 28 30 27 24 21 18 15 12 95 55
75 70 30 26 23 20 17 14 11 85 55
80 54 31 28 25 23 20 17 14 12 96 5
85 42 32 30 27 24 21 18 15 13 10 7 5
90 32 33 31 28 25 22 19 17 14 11 8 5
75 79 33 30 27 24 21 19 16 13 10 75
80 62 33 31 28 26 23 21 18 16 13 11 8
85 48 36 33 30 28 25 23 20 18 15 13 10
90 38 37 34 32 29 27 24 21 19 16 14 11
75 88 36 33 31 28 26 23 20 18 15 13 10
80 68 36 34 31 29 27 24 22 20 17 15 13
85 54 38 35 33 30 28 25 23 21 18 16 13
90 42 38 35 33 30 29 26 24 21 19 17 14
95 33 38 35 33 31 29 27 24 22 20 18 15
75 96 39 36 34 32 29 27 25 22 20 18 15
80 76 39 37 35 32 30 28 26 24 22 19 18
85 60 39 37 35 33 31 29 26 24 22 20 18
90 48 40 38 35 33 31 29 26 24 22 20 18
95 38 40 38 36 33 31 29 27 25 22 20 18
80 84 42 40 38 36 34 32 30 28 27 25 23
85 67 42 41 39 37 35 33 31 29 27 25 23
90 54 44 42 40 38 36 34 32 31 29 27 25
95 43 45 43 41 40 38 36 34 32 31 29 27
80 92 44 43 41 39 38 36 34 33 31 29 27
85 74 45 43 41 40 38 36 34 33 31 30 28
90 59 47 45 44 42 41 39 37 36 34 33 31
95 48 49 47 46 45 43 42 41 39 37 36 35
85 80 47 46 44 43 41 40 39 37 36 34 33
90 65 48 47 46 44 43 41 40 39 37 36 34
95 53 50 49 47 46 44 43 41 40 39 37 36
90 24 27 24 21 18 14 11 8 55 55
85 36 29 26 23 20 17 14 11 8 55 5
70 90 29 26 23 91613107 555
White area of the chart is optimum for charging
For coils equipped with TXV’s charge to sub-cooling or 8 to 12°
Notes:
All information based on 400 CFM/Ton
Recommended minimum superheat is 5°F
Superheat temperature measurements should be taken within 3 feet of the compressor suction line connection
R/H - Approximate % of indoor relative humidity
WB - Indoor wet bulb temperture °F
DB - Indoor dry bulb temperature °F
*** When checking superheat at extreme high temperature, charge to minimum of 5° of super heat
and re-check when temperature falls back into the white area of chart.

Figure 2 - Wiring Schematic - Heat Pump Units (NCHP-018/024/030-1019/3019)
7
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



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


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

SPECIFICATIONS CHART - 1000 SERIES
DIMENSIONAL DRAWING NCHP-018-1019, NCHP-024-1019, NCHP-030-1019
8
19 7/8"
7/8" K.O.
25 3/4"
1 3/8" K.O.
(2)7/8"
(2)1 1/2"
1 1/8"
2 7/8" 8 1/2"
10 7/8"
13 5/8"
1 9/16"
4 31/32"
7/8" (2)
2 19/32"
15/16"
2 3/32"
1 17/32"
1 17/32"
3 17/32"
15/16"
1 3/8" (2)
1000 SERIES HEAT PUMP
28 5/8"
18 1/2"
MODEL NO. NCHP-018 NCHP-024 NCHP-030
DIMENSIONS
26”
28 1/2”
18 1/2”
3/8”
5/8”
3/4”
26”
28 1/2”
18 1/2”
3/8”
3/4”
3/4”
26”
28 5/8”
18 1/2”
3/8”
3/4”
3/4”
Width
Height
Length
Liquid Valve
Vapor Valve
Drain Connection MPT
CAP. COOLING 18,000 24,000 28,500
CAP. HEATING 47°F 17,000 22,500 26,000
ELECTRICAL
208/230
60
1
12
14.6
25
208/230
60
1
12
17.7
30
208/230
60
1
12
19.8
30
Volts
Hertz
Phase
Min. AWG Wire
Min. Cir. Ampacity
Max. Fuse
COMPRESSOR
7.0
41
9.9
61
10.7
61
RLA (Amps)
LRA (Amps)
FAN MOTOR
0.25
1140
1.2
0.25
1140
1.2
0.50
1575
2.8
HP
RPM
Amps (Full Load)
COIL
3.46
16
3.46
16
3.46
16
Face Area
FPI
Service Clearance........30”

9
SPECIFICATIONS CHART - 3000 SERIES
DIMENSIONAL DRAWING NCHP-018-3019, NCHP-024-3019, NCHP-030-3019
18 1/2"
32"
4 29/32"
7/8"
1 17/32"
3 17/32"
1 17/32"
1 3/8"
1 1/2" (2)
23 3/4"
1 1/4" 3"
5 1/2"
12 13/16"
18 1/16"
21 9/16"
7/8" K.O.
1 23/32"
1 3/8" K.O.
7/8" (2)
3000 SERIES HEAT PUMP
MODEL NO. NCHP-018 NCHP-024 NCHP-030
DIMENSIONS
23 3/4”
32”
18 1/2”
3/8”
5/8”
3/4”
23 3/4”
32”
18 1/2”
3/8”
3/4”
3/4”
23 3/4”
32”
18 1/2”
3/8”
3/4”
3/4”
Width
Height
Length
Liquid Valve
Vapor Valve
Drain Connection MPT
CAP. COOLING 18,000 24,000 29,000
CAP. HEATING 47°F 17,000 22,500 26,000
ELECTRICAL
208/230
60
1
12
14.6
25
208/230
60
1
12
17.7
30
208/230
60
1
12
19.8
30
Volts
Hertz
Phase
Min. AWG Wire
Min. Cir. Ampacity
Max. Fuse
COMPRESSOR
7.0
41
9.9
61
10.7
61
RLA (Amps)
LRA (Amps)
FAN MOTOR
0.25
1140
1.2
0.25
1140
1.2
0.50
1575
2.8
HP
RPM
Amps (Full Load)
COIL
3.63
16
3.63
16
3.463
16
Face Area
FPI
Service Clearance........30”

National Comfort Products
539 Dunksferry Road • Bensalem, PA 19020 • [phone] • 1-800-523-7138 • Fax: [phone]
10
ITEM DESCRIPTION NCHP-018 NCHP-024 NCHP-030
1
2
3
4
Contactor
Dual Run Capacitor
30-5 mFd / 370V
35-5 mFd / 370V
30-7.5 mFd / 370V
Low Pressure Switch
(Optional)
High Pressure Switch
(Optional)
14262082
N/A
14225375
N/A
14265020
14265023
14262082
14225376
N/A
N/A
14265020
14265023
14262082
N/A
N/A
14225377
14265020
14265023
5Compressor
H21J17BABCA
H21J22BABCA
H21J25BABCA
14210095
N/A
N/A
N/A
14210097
N/A
N/A
N/A
14210099
6
7
Liquid Service Valve
Vapor Service Valve
14258603A
14258605A
14258603A
14258606A
14258603A
14258606A
8
9
10
Defrost Control
Defrost Sensor
Accumulator
14260020
14260014
14255005
14260020
14260014
14255005
14260020
14260014
14255005
ITEM DESCRIPTION NCPC-018 NCPC-024 NCPC-030
11
12
13
14
15
16
17*
18
19
20
21
Outdoor Coil
Blower Motor
0.25 HP 1140 RPM
0.50 HP 1575 RPM
Blower Wheels
(7.6” OD x 8.0”)
Blower Housings
Inlet Ring (2 req’d)
Motor Blower Mount
Access Panel 1000
Top Panel 1000
Right Side Panel
Left Side Panel
Wire Grille 1000
14208028
14270038
N/A
14267007
14214013
14214021
14256933S
14256936Y
14256939S
14256938HP
14256937HP
14269001
14208029
14270038
N/A
14267007
14214013
14214021
14256933S
14256936Y
14256939S
14256938HP
14256937HP
14269001
14208029
N/A
14270036
14267007
14214013
14214021
14256933S
14256936Y
14256939S
14256938HP
14256937HP
14269001
22
23
24
25
26
27
Condensate Pan Heater
Heater Thermostat
Reversing Valve
Reversing Valve Coil
Expansion Valve
Mufer or Check Valve
14299104
14299105
14206026
14206027
14211005
14275341
14299104
14299105
14206026
14206027
14211014
14275341
14299104
14299105
14206026
14206027
14211008
14275639
±Not shown
REPLACEMENT PARTS GUIDE NCHP SERIES 1000

11
National Comfort Products
539 Dunksferry Road • Bensalem, PA 19020 • [phone] • 1-800-523-7138 • Fax: [phone]
ITEM DESCRIPTION NCHP-018 NCHP-024 NCHP-030
1
2
3
4
Contactor
Dual Run Capacitor
30-5 mFd / 370V
35-5 mFd / 370V
30-7.5 mFd / 370V
Low Pressure Switch
(Optional)
High Pressure Switch
(Optional)
14262082
N/A
14225375
N/A
14265020
14265023
14262082
14225376
N/A
N/A
14265020
14265023
14262082
N/A
N/A
14225377
14265020
14265023
5Compressor
H21J17BABCA
H21J22BABCA
H21J25BABCA
14210095
N/A
N/A
N/A
14210097
N/A
N/A
N/A
14210099
6
7
Liquid Service Valve
Vapor Service Valve
14258603A
14258605A
14258603A
14258606A
14258603A
14258606A
8
9
10
Defrost Control
Defrost Sensor
Accumulator
14260020
14260014
14255005
14260020
14260014
14255005
14260020
14260014
14255005
ITEM DESCRIPTION NCHP-018 NCHP-024 NCHP-030
11
12
13
14
15
16
17*
18
19
20
21
Outdoor Coil
Blower Motor
0.25 HP 1140 RPM
0.50 HP 1575 RPM
Blower Wheels
(7.6” OD x 8.0”)
Blower Housings
Inlet Ring (2 req’d)
Motor Blower Mount
Access Panel 3000
Top Panel 3000
Right Side Panel
Left Side Panel
Wire Grille 3000
14208026
14270038
N/A
14267007
14214013
14214021
14256933S
14256969S
14256967S
14256973S
14256974HP
14269003
14208027
14270038
N/A
14267007
14214013
14214021
14256933S
14256969S
14256967S
14256973S
14256974HP
14269003
14208027
N/A
14270036
14267007
14214013
14214021
14256933S
14256969S
14256967S
14256973S
14256974HP
14269003
22
23
24
25
26
27
Condensate Pan Heater
Heater Thermostat
Reversing Valve
Reversing Valve Coil
Expansion Valve
Mufer or Check Valve
14299104
14299105
14206026
14206027
14211006
14275341
14299104
14299105
14206026
14206027
14211014
14275341
14299104
14299105
14206026
14206027
14211008
14275341
±Not shown
REPLACEMENT PARTS GUIDE NCHP SERIES 3000

National Comfort Products
539 Dunksferry Road • Bensalem, PA 19020 • [phone] • 1-800-523-7138 • Fax: [phone]
LIMITED EXTENDED PROTECTION WARRANTY
FOR
NATIONAL COMFORT PRODUCTS (NCP) BENSALEM, PA
HEAT PUMP UNITS
This NCP product is warranted to be free from all manufacturing defects, material or workmanship, for a period of one year from
the date of installation (receipt required), whether or not actual use begins on this date, or one year from the date of manufacture
if the date of installation cannot be veried. Immediate notice to NCP will (A) provide a new or remanufactured part to replace the
defective part, without charge for the part itself, or (B) provide a replacement unit.
National Comfort Products will not be responsible for: local transportation, removing, related service, labor, diagnosis calls,
refrigerant, costs incurred for returning defective parts, damage or repairs required due to faulty installation or improper
application by others, damage as a result of re, wind, oods, lightning, accidents, or corrosive atmosphere.
EXTENDED 2ND THRU 5TH YEAR COMPRESSOR WARRANTY
If the compressor should fail because of a manufacturing defect, is in the original installation, has been operated under normal
conditions, and is in the 2nd to 5th year following the above determined date, NCP will provide, at its option, a new or remanufac-
tured replacement compressor.
Replacement parts are warranted for the remainder of the original product warranty, or for one year, whichever is longer.
NCP may require that defective parts be returned to verify and identify the cause of the defect.
LIMITATION OF WARRANTIES — ALL IMPLIED WARRANTIES (INCLUDING IMPLIED WARRANTIES
OF MERCHANTABILITY) ARE HEREBY LIMITED IN DURATION TO THE PERIOD FOR WHICH EACH
LIMITED WARRANTY IS GIVEN. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN
IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU. THE EX-
PRESSED WARRANTIES MADE IN THIS WARRANTY ARE EXCLUSIVE AND MAY NOT BE ALTERED,
ENLARGED, OR CHANGED BY ANY DISTRIBUTOR, DEALER, OR OTHER PERSON WHATSOEVER.
MATERIAL IS INSPECTED AT THE FACTORY AND RELEASED TO TRANSPORTATION AGENCY IN
GOOD CONDITION. WHEN RECEIVED, VISUAL INSPECTION MUST BE MADE IMMEDIATELY. AP-
PARENT SHIPPING DAMAGE SHOULD BE NOTED ON THE DELIVERY RECEIPT AND THE MATERI-
AL INSPECTED IN THE PRESENCE OF THE CARRIER’S REPRESENTATIVE. IF DAMAGE IS FOUND
A CLAIM MUST BE FILED WITH THE CARRIER IMMEDIATELY.
FREIGHT DAMAGE IS NOT COVERED UNDER THIS WARRANTY.
WARNING: NO WARRANTY ON NEW UNITS INSTALLED BEHIND BRICK FACADES. IN YEARS PAST,
IT WAS COMMON PRACTICE TO ADD A BRICK PATTERN FACADE (PIGEON HOLES) IN FRONT OF
THE THRU-THE-WALL UNIT TO CHANGE THE EXTERIOR APPEARANCE OF THE BUILDING. ALL
OBSTACLES ADDED TO IMPEDE AIR FLOW OF THE CONDENSING UNIT WILL DECREASE PER-
FORMANCE AND CAUSE PREMATURE EQUIPMENT FAILURE AND VOID ALL WARRANTIES. CON-
SULT FACTORY WITH ANY QUESTIONS.
This warranty gives you specic legal rights. You may also have rights which vary from state to state.
NATIONAL COMFORT PRODUCTS, BENSALEM, PENNSYLVANIA
NOTE: All warranty parts and paper work must be submitted no later than 60 days after failure.
Warranty requests submitted after 60 days of failure will not be processed.
12

13
National Comfort Products
539 Dunksferry Road • Bensalem, PA 19020 • [phone] • 1-800-523-7138 • Fax: [phone]
PROCEDURE FOR WARRANTY FAILURE
National Comfort Products are warranted for one year after the date of installation, or one year from the date of manufacture.
The compressor carries an extended 5 year warranty after the date of installation. Use the following procedure for returning
parts for warranty replacement.
COMPRESSORS
The National Comfort Products use Bristol compressors. Bristol provides a 20 month warranty from date of compressor
manufacture.
All failed compressors within this Bristol warranty period are to be returned to a Bristol wholesaler. Bristol wholesalers are
located in all major cities.
The compressor serial number includes a date code. The rst three numbers indicate the day of the year
(059 = Feb. 28, 108 = April 18). The fourth and fth numbers indicate the year (91 = 1991, 92 = 1992).
The Bristol wholesaler will honor the compressor warranty for 20 months after the date of compressor manufacture.
This means you will not have to wait for a replacement compressor to be shipped from Bensalem, PA.
The situation may present itself where it is better for the compressor to be returned to National Comfort Products during
the 20 month Bristol warranty period. NCP will also honor the Bristol 20 month warranty period.
All returned compressors must have the tubing connections closed with rubber plugs or brazed shut.
National Comfort Products will provide the extended warranty through the 5th year from date of installation of the unit for the
compressor. All compressors returned to NCP for warranty are to follow the procedure listed below.
OTHER PARTS
A Purchase Order Number is required to ship a replacement part to a customer. The failed part is to be returned to NCP
with freight prepaid. Credit will be issued to the Purchase Order, if the part is found to be a warranty failure.
Items returned to NCP for warranty claim must have a Returned Goods Authorization Number assigned to and attached
to the part. The Return Goods Authorization Number may be obtained by contacting the factory.
Call and notify the factory before a warranty part is returned. The failed part must be returned prepaid with the Return Goods
Authorization Number on all parts and reference paperwork.

National Comfort Products
539 Dunksferry Road • Bensalem, PA 19020 • [phone] • 1-800-523-7138 • Fax: [phone]
ENGINEERING SPECIFICATION GUIDE
THRU-THE-WALL SPLIT SYSTEM HEAT PUMP UNIT
SAFETY APPROVAL - Each unit shall be ETL listed for safety approval.
GENERAL - Each outdoor heat pump unit shall be factory assembled and run tested.
THRU-THE-WALL APPLICATION - Each unit shall be designed for installation exibility. Horizontal air inlet and outlet on the
same side of the unit for thru-the-wall or conventional mounting.
COILS - Outdoor coils shall be fabricated of raised lance aluminum ns mechanically bonded to seamless ried copper tubes.
CABINET - Unit cabinet shall be constructed of heavy-gauge galvanized or aluminized steel. The steel shall be treated by
phosphate washes prior to electrostatically-applied and oven-baked paint.
FACTORY CHARGED - Each unit shall be charged with R-22, for proper operation with recommended indoor coil and 10 foot
tubing.
SERVICE VALVES - Each unit shall be equipped with liquid and vapor shut off valves. The valves are to be constructed of brass.
Silver-brazed connection is required for connection to refrigerant lines.
COMPRESSOR - Shall be welded hermetic type with internal vibration isolation and built-in thermal and electrical protective
devices.
P.S.C. BLOWER MOTOR - Each unit shall have high efciency Permanent Split Capacitor motor for low current and high
efciency unit operation.
14

SPLIT-SYSTEM HEAT PUMP INSTALLATION INSTRUCTIONS - Rev 09/09