National Comfort Product 1000 SERIES User manual

National Comfort Products®
A Division of National Refrigeration & Air Conditioning Products, Inc.
539 Dunksferry Road |Bensalem, PA 19020 |[phone] |1-800-523-7138 |Fax: [phone]
HEATING & A/C EQUIPMENT
NATIONAL
COMFORT
PRODUCTS
®
Thru-the-Wall Condensing Units
This unit should
be installed in an
OUTSIDE WALL FOR
THRU-THE-WALL
INSTALLATION ONLY!
Please read the entire installation guide before starting the installation.
Split-System
Condensing Units
Installation
Guide
All Units Department of Energy Listed
NCPE
Series:
1000
3000
4000
5000

Table of Contents
IMPORTANT NOTE: DO NOT DESTROY OR THROW AWAY THIS MANUAL.
IT SHOULD BE KEPT IN A SAFE PLACE FOR FUTURE REFERENCE.
Safety First...........................................................................Page 3
Before You Start ..................................................................Page 4
Check for Clearances...........................................................Page 4
Unit Location Considerations...............................................Page 5
Refrigerant Piping Limits.....................................................Page 5
Leak Checking .....................................................................Page 8
Evacuation, Electrical Connections ......................................Page 9
High Voltage and Power Supply ..........................................Page 10
Start Up, Sequence of Operations .......................................Page 11
Refrigerant Charging ...........................................................Page 12
Maintenance, Checkout Procedure ......................................Page 13
Important! Before Removing a Warranty Compressor.........Page 14
Wiring Diagrams..................................................................Page 15
Specifications, Dimensional Drawings.................................Page 18
Replacement Parts - NCPE 1000 Series...............................Page 22
Replacement Parts - NCPE 3000 Series...............................Page 23
Replacement Parts - NCPE 4000 Series...............................Page 24
Replacement Parts - NCPE 5000 Series...............................Page 25
Noise, Insulated Sound Cover..............................................Page 26
Warranty .............................................................................Page 27
Engineering Specifications Guide ........................................Page 29

Installation Guide for NCPE Split-System Condensing Units
3
Safety First!
“USE COPPER SUPPLY WIRES ONLY”
HIGH VOLTAGE!
Disconnect ALL power before serving. Multiple power sources may be present. Failure
to do so may result in property damage, personal injury or death.
!WARNING
Installation and repair of this unit should be performed ONLY by individuals meeting the requirements
of an “entry level technician” as specied by National Codes. Attempting to install or repair this unit
without such background may result in product damage, personal injury or death.
Use care when handling scroll compressors. Some temperatures could be hot!
!CAUTION
Scroll compressors should NEVER be used to evacuate the air conditioning system. Vacuums this low
can cause internal electrical arcing resulting in a damaged or failed compressor.
!CAUTION
The unit must be permanently grounded. Failure to do so can cause electrical shock resulting in severe
personal injury or death.
!WARNING
These instructions are intended as an aid to qualied, licensed service personnel for proper installation,
adjustment and operation of this unit. Read these instructions thoroughly before attempting installation
or operation. Failure to follow these instructions may result in improper installation, adjustment, service
or maintenance possibly resulting in re, electrical shock, property damage, personal injury or death.
Do not use oxygen to purge lines or pressurize system for leak test. Oxygen reacts violently with oil,
which can cause an explosion resulting in severe personal injury or death.
Extreme caution should be exercised when opening the Liquid Line Service Valve. Turn counter clockwise
until the valve stem just touches the rolled edge. No torque is required. Failure to follow this warning
will result in abrupt release of system charge and may result in personal injury and /or property damage.
!WARNING
!WARNING
!WARNING
!WARNING

Installation Guide for NCPE Split-System Condensing Units
4
WARNING: WARRANTY WILL BE VOID ON NEW
UNITS INSTALLED BEHIND BRICK FACADES
OR CONNECTED TO DUCTWORK (See Note
1 below). 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 PERFORMANCE AND CAUSE
PREMATURE EQUIPMENT FAILURE AND VOID
ALL WARRANTIES. CONSULT FACTORY WITH
ANY QUESTIONS.
Before You Startnit
ALL phases of this installation must comply with NATIONAL,
STATE AND LOCAL CODES. The manufacturer assumes no
responsibility for equipment installed in violation of any code
requirements.
Be sure that the electrical data specified on the unit rating
plate corresponds to what is available at the installation site
and NEC for installation requirements.
This unit MUST be installed in an outside wall for thru-the-wall
installation ONLY. No pad mounts.
Be sure that the electrical service provided to the building can
handle the load imposed by the unit.
IMPORTANT — This Document is customer property and is to
remain with this unit. Please refer to service information pack
upon completion of work to register the unit’s warranty. These
instructions do not cover all variations in systems or provide
for every possible contingency to be met in connection with the
installation. Should further information be desired or should
particular problems arise which are not covered sufficiently
for the purchaser’s purposes, the matter should be referred to
your installing dealer or local distributor before contacting the
manufacturer.
Note: The manufacturer recommends installing only approved
matched split systems. Our split systems are A.H.R.I. rated only
with TXV indoor systems. Some of the benefits of installing
approved matched split systems are maximum efficiency,
optimum performance and the best overall system reliability.
Self-equalizing components are required to reduce compressor
starting problems. If self-equalizing components are not used,
field installed hard start kits will be required. Hard start kits
MUST be compatible with compressors.
Hard start kits MUST be compatible with Copeland compressors
- 88-106/330 µFd/Volts
Start relays to be sized to µFd of capacitor used.
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.
Check for Clearances
Minimum 12”
Horizontal Clearance
Between Units
Minimum 48”
Vertical Clearance
Between Units”
*Less than 12”
Call National Comfort Products
Note 1: No ducts are permitted to be connected to the intake or
discharge of the unit.

Installation Guide for NCPE Split-System Condensing Units
5
Unit Location Considerations
In thru-the-wall installation, due to the various types of wall
construction, it is not possible to provide detailed instructions.
The following is a list of general requirements and cautions for
installing these units. The unit must be installed level, both -
top front to back and left to right.
1. Masonry walls must have a lintel to support the wall.
2. Extend the unit approximately 3/4"beyond outside surface of
the wall. Optional mounting angles can be purchased from the
factory or field fabricated for locating and mounting the unit in
the wall.
3. The wall opening across the top and bottom must be flashed.
Bottom flashing 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 fill the clearance between the
unit and the wall sleeve with a polyurethane foam sealant.
4. During periods of rain and wind the primary drainage path
may not be adequate to handle the load. Secondary precautions
may also be required but not limited to the following:
a. Seal flashing to unit
b. Floor drain
c. Additional field sealing of sheet metal joints
d. Sealing of unused access opening
5. Clearances to air inlets and outlets must be adequate to ensure
no air flow obstructions or recirculation of condenser air flow.
6. Some architectural designs of buildings will require the unit
to be mounted behind a decorative grille. The performance
(capacity and efficiency) of the unit may be reduced with the
use of these decorative grilles. The less resistive these grilles
are to air flow, 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.
7. If the unit is mounted behind a decorative grille, one or both
of the following items must be done to eliminate recirculation 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
architectural grille
8. The unit must not be mounted in dead-end hallways or areas
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 corrosive fumes could come in
contact with coil side of unit.
9. 30"clearance is required for service accessibility on the inside
service panel.
10. 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.
11. Care must be taken when locating the unit. Locate away form
bedrooms as operational sounds may be objectionable. (See
sound cover on page 25).
Refrigerant Piping Limits
1. The maximum length of refrigerant lines from the through the
wall unit to indoor unit should NOT exceed fifty (50) feet without
contacting the manufacturer.
2. The maximum vertical change should not exceed twenty (20)
feet without contacting the manufacturer.
Liquid Line
Vapor Line
Insulation
IMPORTANT: THE VAPOR LINE MUST
ALWAYS BE INSULATED. DO NOT
ALLOW THE LIQUID LINE AND VAPOR
LINE TO COME IN DIRECT (METAL TO
METAL) CONTACT.

Installation Guide for NCPE Split-System Condensing Units
6
For example:
• When the refrigerant lines have to be fastened to floor joists or
other framing in a structure, use isolation type hangers.
• Isolation hangers should also be used when refrigerant lines
are run in stud spaces or enclosed ceilings.
• Where the refrigerant lines run through a wall or sill, they
should be insulated and isolated.
• Isolate lines from all ductwork.
• Minimize the number of 90� turns.
Maximum Allowable Liquid Line Pressure Drop =
50 PSI
Subtract .43 PSI for each foot of Liquid Lift (if any)
Do Not Exceed this value when selecting Liquid Line
Field Installation:
Install the units per the manufacturer’s recommendations. Route
the copper lines between the unit
Step 1:
The tubing should be cut square. Make sure it is
round and free of burrs at the connecting ends.
Clean the tubing to prevent contaminants from
entering the system.
Step 2:
Wrap a wet rag around the copper stub before
brazing.
Note: Take precautions to prevent noise
within the building structure due to
vibration transmission from the refrigerant
lines (Some examples provided below).
Air
Handler
Air
Handler
Air
Handler

Installation Guide for NCPE Split-System Condensing Units
7
Step 3:
Flux the copper tube and insert into the stub. Braze
the joint. No flux is necessary if a low to zero-silver
braze alloy is used.
Step 4:
After brazing, quench with a wet rag to cool the
joint and remove any flux residue. Evacuate,
purge or charge the connecting lines per the unit
manufacturer’s instructions.
Step 5:
This is not a back seating valve. To open the valve
remove 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 6:
Replace the valve cap finger tight then tighten an
additional 1/12 turn or 1/2 hex flat. A metal-to-metal
seal is now complete. Complete normal factory
recommended procedures.
1. The unit has internally mounted service valves. Field tubing
may be routed through the locations provided in either the top or
rear flange. Care should be taken not to block access 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 Page 6).
2. Run refrigerant lines as directly as possible. Field piping
inside the condensing unit should not block access to major
components. Refrigerant lines should not be in direct contact
with the floor or ceiling joists. Use insulated or suspension type
hangers. When refrigerant lines run through a wall, seal openings
around the lines with a flexible material to avoid vibration to the
structure.
3. Insulate the vapor line with a minimum 1/2"foam rubber
or other type insulation having an adequate vapor barrier. For
indoor units with a TXV, a liquid line filter 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 unless an
inert atmosphere is provided. The ow of dry
nitrogen 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.
4. When tubing installation is completed, seal openings around
tubing where tubing enters the unit cabinet.
5. Standard refrigeration piping practices must be employed
when installing traps. When installing the condenser below 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 exceeds 50 ft.
6. Install the refrigerant lines using the following procedure (See
Page 5).
a. Remove the service port caps and Schrader Cores of the
liquid line service valve and the vapor line service valve of
the condensing unit. Connect low pressure dry nitrogen
to the liquid line valve service port.

Installation Guide for NCPE Split-System Condensing Units
8
b. Provide a heat sink at the service valve such as wrapping
a wet rag around it, to prevent damage during the brazing
operation
c. Braze the liquid line to the service valve. Allow the nitrogen
to keep flowing 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. Braze the liquid line to the evaporator liquid connection
f. Braze the vapor line to the evaporator vapor connection
g. Provide a heat sink to the vapor line service valve of the
condensing unit
h. Braze the vapor line to the service valve
i. When tubing installation is completed, seal openings
around tubing where tubing enters the unit cabinet.
j. Standard refrigeration piping practices must be employed
when installing traps. When installing the condenser
below 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 exceeds 50 ft.
Leak Checking
Leak checking of refrigerant line braze joints and evaporator
unit using dry nitrogen.
1. Install service port cap of the vapor line service valve (cap was
removed for brazing operations).
2. Connect dry nitrogen source to the service port of the liquid
line service valve. Pressurize refrigerant lines and indoor coil to
approximately 100 PSIG.
3. Check for leaks using a liquid soap solution. If any leaks are
located, purge the nitrogen, repair the leak(s) and repeat the leak
check procedure.
Leak checking of refrigerant line braze joints and evaporator
unit using R410a refrigerant.
1. Connect R410a source to the service port of the liquid line
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.
2. Leak check with an electronic leak detector or liquid soap
solution. If any leaks are detected, use a refrigerant recovery
system to remove the refrigerant. Repair the leak(s) and repeat
the leak check procedure.
Apply liquid soap solution to check for leaks
or leak check with an
electric leak detector
Bubbles forming in the liquid soap solution indicates a leak.

Installation Guide for NCPE Split-System Condensing Units
9
Evacuation
1. Connect the vacuum pump to the service ports of the liquid
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.
2. Following the vacuum pump manufacturer’s instructions,
allow the pump to operate until the system has been evacuated
down to 300 microns.
NOTE: Check for leaks if unable to get to 300 microns.
3. Allow the pump to continue running an additional 15 minutes.
Turn off the pump and leave connections secured. After 10
minutes if system fails to hold 500 microns or less, check all
connections for tight fit and repeat evacuation procedure.
4. Isolate the vacuum pump by closing the shut-off valves on
vacuum pump lines or test gauge manifold.
5. Open the service valves. Opening the service valves will allow
the refrigerant in the condensing unit to enter the refrigerant
lines and evaporator coil. The vacuum pump can now be
disconnected.
Electrical Connections
NOTE: Make certain that the volts, hertz, and phase correspond
to that specified on the unit rating plate, and that the service
provided by the utility is sufficient 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
b. Connect the single phase power supply to unit contactor
terminal L1 and L2
c. Connect ground wire to lug
d. Low Voltage Connections
Consult the indoor unit installation instructions for thermostat
connections. Use a 2-wire thermostat cable between the units.
When locating the room thermostat, it should be in the natural
circulating path of room air. Avoid locations where the thermostat
would be exposed to cold air infiltration; drafts from windows,
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.
Electrical - Low Voltage
Low Voltage Maximum Wire Length
Table defines the maximum total length of low voltage wiring
from the condenser to the indoor unit and to the thermostat.
24 VOLTS
WIRE SIZE MAX. WIRE
LENGTH
18 AWG 150 Ft.
16 AWG 225 Ft.
14 AWG 300 Ft.
Low Voltage Hook-up Diagram
Contactor
Field Wiring Low Voltage
Yellow
Red
Blue

Installation Guide for NCPE Split-System Condensing Units
10
Electrical - High Voltage
ni
NOMINAL
VOLTAGE
MINIMUM
VOLTAGE
MAXIMUM
VOLTAGE
208-230 197 253
Please refer to pages 15, 16 or 17 for proper
capacitor sizing.
High Voltage Power Supply
ni
LIVE ELECTRICAL COMPONENTS!
During installation, testing, servicing
and troubleshooting of this product,
it may be necessary to work with live
electrical components. Failure to follow
all electrical safety precautions when
exposed to live electrical components
could result in death or serious injury.
!WARNING
The high voltage power supply must agree with the
equipment nameplate.
OR
Make certain that the volts, hertz, and phase
correspond 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.
Power wiring must comply with national, state, and
local codes.
Follow instructions on unit wiring diagram located on
the inside of the access door, or cabinet and in the
wiring diagrams included with the unit.
Field line wiring by others
CC
C
SR
COMP
CFM
C
H
F
LPS HPS
CC
208V
C
+-
230V
XFMER*FIELD SUPPLIED
CC
L1 L2
LINE VOLTAGE
LOW VOLTAGE
CY*FIELD SUPPLIED
T-STAT
ON
OFF
Disconnect
Switch
Thru-the-Wall
Condensing Unit
Install a separate disconnect
switch at the location of the
through the wall unit.
Ground the unit per national,
state, and local code
requirements.

Installation Guide for NCPE Split-System Condensing Units
11
Start Up
1. Ensure Sections 7 through 12 have been completed. Check
numbers once done.
2. Turn on disconnect(s) to apply power to all equipment.
3. Wait one (1) hour before starting the unit if compressor
crankcase heater accessory is used and the Outdoor Ambient
is below 70º
4. Set system thermostat to ON.
Sequence of Operations
On a “call for cooling”, the thermostat “makes” circuits R-Y and
R-G. Circuit R-Y energizes the contactor starting the condenser
fan motor and compressor circuit. R-G energizes the indoor unit
blower relay starting the indoor blower motor.
When the thermostat is satisfied, its contacts open, de-energizing
the contactor and blower relay. Compressor and motors should
stop.
System Charge Adjustment
Temperature Measurements
Check the outdoor temperatures. Subcooling (in cooling mode) is
the only recommended method of charging above 55º F ambient
outdoor temperature. For best results the indoor temperature
should be kept between 70º F to 80º F.
Note: It is important to return in the spring or summer to
accurately charge the system in the cooling mode when outdoor
ambient temperature is above 55º F.
Stabilize the system by operating for a minimum of 20 minutes.
At startup, or whenever charge is removed or added, the system
must be operated for a minimum of 20 minutes to stabilize
before accurate measurements can be made.
Installers Notes:
• Condenser door must be in place while adjusting subcooling
• Ambient temperature must be between 65�F-95�F
• Indoor return air temperature must be above 70�F
• Allow 10 to 20 minutes of run time at premium conditions
before adjusting charge
• Driving rain against the condenser coil can affect setting proper
subcooling
• Add charge to increase subcooling
• Remove charge to decrease subcooling
• Indoor units must be equipped with a thermal expansion valve
(TXV)

Installation Guide for NCPE Split-System Condensing Units
12
Ounces & Pounds of R410A required for line sets
Weight Tubing Size 10’ 15’ 20’ 25’ 30’ 35’ 40’ 45’ 50’
Ounces 3/8” - 3/4” 0 3.5 7 10.5 14 17.5 21 24.5 28
Pounds 3/8” - 3/4” 0 0.21875 0.4375 0.65625 0.875 1.09375 1.3125 1.53125 1.75
Refrigerant Charging
The condensing unit comes from the factory pre-charged for the
condensing unit, recommended evaporator coil, and the 10 feet
of refrigerant lines. If the actual line length is greater or less than
10 feet, add or remove refrigerant at the rate of 0.6 ounces per
foot.
If the condensing unit charge was lost for any reason, add
factory refrigerant charge listed on condensing unit data plate,
plus adjustments 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.
Note: The 10ft. of tubing included in the nameplate charge
has been accounted for, use actual linear length with the table
below.
When replacing a R-22 system, it is recommended, that new
Line Sets be used. If the old line sets are to be used, they MUST
be flushed with a commercial flushing agent. R410A refrigerant
oil, is not compatible with R-22 oil. The indoor coil MUST be
replaced and a TXV MUST be used.
Important: The outdoor unit is fully charged
at the factory for the recommended 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. For indoor units with a TXV, a liquid line
lter drier must be installed (SPORLAN #083-S
or similar).
!CAUTION
Low Suction Pressure Operation! Compressor Damage!
Do not operate with a restricted suction. Do not operate with the low-pressure cut-out bridged. Do not operate compressor
without enough system charge to maintain at least 0.5 bar suction pressure. Allowing pressure to drop below 0.5 bar for
more than a few seconds may overheat scrolls and cause early drive bearing damage.
The system should be liquid-charged through the liquid-receiver shut-off valve or through a valve in the liquid line. The
use of a filter drier in the charging line is highly recommended. Because R410A and R407C are blends and scrolls have
discharge check valves, systems should be liquid-charged on both high and low sides simultaneously to ensure a positive
refrigerant pressure is present in the compressor before it runs. The majority of the charge should be placed in the high
side of the system to prevent bearing washout during first-time start on the assembly line.
14299884
1. Connect the charging cylinder to the manifold gauge set. Open
the charging cylinder valve and bleed air out of the charging hose
at the manifold gauge set connection.
2. Tighten the manifold gauge set charging connection. Open the
main manifold gauge set valve and introduce refrigerant into the
system. NOTE: Oil charge is polyester 32bce.
3. When the correct refrigerant charge level is obtained, remove
the manifold gauge set.
4. Replace the gauge port caps.
Permanently stamp the unit data plate with the total amount of
refrigerant in the system. For coils equipped with TXV’s charge
to sub-cooling, 15-19° at service valve; superheat, 12-18° at
service valve.
Note: All information based on the following
Air Flow Chart. Recommended superheat is
12 - 18° at service valve. Superheat temperature
measurements should be taken within 3 feet of
the compressor suction line connection.

Installation Guide for NCPE Split-System Condensing Units
13
Air Flow Chart
1000, 3000, & 4000 Series
Model Air Handler Tap CFM Static
NCPE-418 NCPAH-24-A 2 580 0.1
NCPE-418 B6VMMX24 6, 8 650 0.1
NCPE-424 NCPAH-24-A 5 830 0.1
NCPE-424 B6VMMX24 5, 7, 8 850 0.1
NCPE-430 NCPAH-36-A 1 950 0.1
NCPE-430 B6VMMX36 1, 5, 6 950 0.1
Air Flow Chart
5000 Series
Model Air Handler Tap CFM Static
NCPE-418 NCPAH-24-A 2 580 0.1
NCPE-424 NCPAH-24-A 5 820 0.1
NCPE-430 NCPAH-36-A 1 950 0.15
NCPE-418 NCPAH-24-M 1 620 0.1
NCPE-424 NCPAH-24-M 4 860 0.1
NCPE-430 NCPAH-36-M 2 1045 0.15
Maintenance
1. Annually clean the inside of the unit to keep the weep holes
in the base pan and in the fan scrolls open to assure proper
drainage of water from the unit.
2. Keep the condenser coil clean and free of anything that
restricts free air flow. On sea coast applications the condenser
coil should be washed periodically to remove salt accumulation.
3. Reduced indoor air flow through a duct system will cause
indoor coil to ice up in cooling. If this condition is allowed to
continue, premature system failure will result. Indoor air filters
should be cleaned and changed regularly.
4. Annually check units mounting to structure to ensure
integrity. Seal between cabinet and/or sleeve for air or water
leakage. Check exposed surfaces for corrosion. Replace or paint
part as required. This maintenance is critical to prevent stains
and damage to exterior surface of building.
5. Inspect refrigerant piping for leaks and suction line insulation.
Improper insulation can cause condensate water damage.
6. Pressure and temperature readings of high and low side
of system should be checked for proper super heat and/or
subcooling. Correct if required.
7. Inspect motor mount, amps to nameplate, hubs for tightness,
balance, and rust or corrosion.
8. Inspect wire connection for evidence of arcing, overheating
and deterioration
Checkout Procedures and
Troubleshooting
CHECKOUT PROCEDURE
After installation has been completed, it is recommended
that the system be checked against the following list:
1. Leak check refrigerant lines. 
2. Properly insulate suction lines and
ttings. 
3. Properly secure and isolate all
refrigerant lines. 
4. Seal passages through masonry.
If mortar is used, prevent mortar
from coming into direct contact with
copper tubing.

5. Verify that all electrical connections
are tight. 
6. Observe outdoor fan during on cycle
for clearance and smooth operation. 
7. Be sure that indoor line drains freely.
Pour water into drain pan. 
8. Be sure that supply registers
and return grilles are open and
unobstructed.

9. Be sure that a return air lter is
installed. 
10. Be sure that the correct airow
setting is used. (Indoor blower motor) 
11. Operate complete system in each
mode to ensure safe operation. 

Installation Guide for NCPE Split-System Condensing Units
14
IMPORTANT!!!
BEFORE REMOVING A WARRANTY COMPRESSOR,
PLEASE FILL OUT THE FOLLOWING
AND CALL [phone].
REMOVAL OF COMPRESSOR WITHOUT FACTORY VERIFICATION
CAN LEAD TO WARRANTY CREDIT BEING DENIED
1. Incoming Voltage to Compressor at Contactor is:__________Volts
2. Compressor Starting AMP Draw:__________
3. Compressor Winding OHM Reading between Terminals C & S:__________
4. Compressor Winding OHM Reading between Terminals C & R:__________
5. Compressor Winding OHM Reading between Terminals R & S:__________
6. Compressor Winding OHM Reading between Terminals C & Ground:__________
7. Compressor Winding OHM Reading between Terminals R & Ground:__________
8. Compressor Winding OHM Reading between Terminals S & Ground:__________
9. Run Capacitor Reading from HERM to COM:__________
10. Start Capacitor Reading if Used:__________
11. If the Compressor is Operating Please Indicate the Following:
Suction Pressure:__________psig Discharge Pressure___________psig
Super Heat:_____________F Subcooling:______________F
AC
Ω
Ω
Ω
Ω
Ω
Ω
R
HERM
FAN
TOP VIEW OF CAPACITOR
C
uF
+
uF
+

Installation Guide for NCPE Split-System Condensing Units
15

Installation Guide for NCPE Split-System Condensing Units
16

Installation Guide for NCPE Split-System Condensing Units
17

Installation Guide for NCPE Split-System Condensing Units
18
SPECIFICATIONS CHART - 1000 SERIES
DIMENSIONAL DRAWING FOR 1000 SERIES
MODEL NO. NCPE-418 NCPE-424 NCPE-430
DIMENSIONS
26 1/4”
28 5/8”
18 1/2”
3/8”
3/4”
26 1/2”
28 5/8”
18 1/2”
3/8”
3/4”
26 1/2”
28 5/8”
18 1/2”
3/8”
3/4”
Width
Height
Length
Liquid Valve
Vapor Valve
NOMINAL
CAPACITY B/HR 18,000 23,000 27,200
ELECTRICAL
208/230
60
1
12
13
20
208/230
60
1
10
15.3
25
208/230
60
1
10
17.75
30
Volts
Hertz
Phase
Min. AWG Wire
Min. Cir. Ampacity
Max. Fuse
COMPRESSOR
9.0
56.3
10.9
62.9
12.8
67.8
RLA (Amps)
LRA (Amps)
FAN MOTOR
0.25
1500
1.4
0.25
1500
1.4
0.25
1500
1.4
HP
RPM
Amps (Full Load)
COIL
3.61
16
3.61
16
3.61
16
Face Area
FPI
Service
Clearance 30"
4 7/8"
18 1/2"
28 21/32"
2 19/32"
15/16"
2 3/32"
1 17/32"
(2)7/8"
1 17/32"
2"
15/16"
1 3/8" (2)
1000 SERIES
8 13/32"
1 15/32"
7/8"
13 19/32"
19 7/8"
7/8"
1 1/2"
25 3/4"
1 5/16"
3 1/4"
31/32"
1 9/16"
1 15/32"
25 3/4"
1 5/16"
3 1/4"
8 13/32"
19 7/8"
22 7/16"
24 3/8"
31/32"
1 15/32"
7/8"
1 1/2"
1 9/16"
31/32"
NCPE1000 SERIES New Yorker 1000 SERIES

Installation Guide for NCPE Split-System Condensing Units
19
SPECIFICATIONS CHART - 3000 SERIES
DIMENSIONAL DRAWING FOR 3000 SERIES
MODEL NO. NCPE-418 NCPE-424 NCPE-430
DIMENSIONS
24 1/8”
32”
18 1/2”
3/8”
3/4”
24 1/8”
32”
18 1/2”
3/8”
3/4”
24 1/8”
32”
18 1/2”
3/8”
3/4”
Width
Height
Length
Liquid Valve
Vapor Valve
NOMINAL
CAPACITY 18,000 23,000 27,200
ELECTRICAL
208/230
60
1
12
13
20
208/230
60
1
10
15.3
25
208/230
60
1
10
18.56
30
Volts
Hertz
Phase
Min. AWG Wire
Min. Cir. Ampacity
Max. Fuse
COMPRESSOR
9.0
56.3
10.9
62.9
13.5
72.5
RLA (Amps)
LRA (Amps)
FAN MOTOR
0.25
1500
1.4
0.25
1500
1.4
0.25
1500
1.4
HP
RPM
Amps (Full Load)
COIL
3.77
16
3.77
16
3.77
16
Face Area
FPI
3 17/32"
7/8"
1 17/32"
1 3/8"1 17/32"
18 1/2"
32"
20 5/16"
7/8"
1 3/8"
23 3/4"
1 1/2"
7/8"
1 5/16"
3 5/16"
5 13/16"
15 9/16"
1 11/16"
4 29/32"
1 5/16"
1 1/2"
7/8"
20 5/16"
15 9/16"
5 13/16"
31/32"
3 5/16"
1 15/32"
1 23/32"
3000 SERIES
NCPE3000 SERIES New Yorker 3000 SERIES
Service
Clearance 30"

Installation Guide for NCPE Split-System Condensing Units
20
Service
Clearance 30"
SPECIFICATIONS CHART - 4000 SERIES
DIMENSIONAL DRAWING FOR 4000 SERIES
MODEL NO. NCPE-418 NCPE-424 NCPE-430
DIMENSIONS
30”
23”
22 1/2”
3/8”
3/4”
30”
23”
22 1/2”
3/8”
3/4”
30”
23”
22 1/2”
3/8”
3/4”
Width
Height
Length
Liquid Valve
Vapor Valve
NOMINAL
CAPACITY B/HR 18,000 23,000 27,200
ELECTRICAL
208/230
60
1
12
13
20
208/230
60
1
10
15.3
25
208/230
60
1
10
17.75
30
Volts
Hertz
Phase
Min. AWG Wire
Min. Cir. Ampacity
Max. Fuse
COMPRESSOR
9.0
56.3
10.9
62.9
12.8
67.8
RLA (Amps)
LRA (Amps)
FAN MOTOR
0.25
1500
1.4
0.25
1500
1.4
0.25
1500
1.4
HP
RPM
Amps (Full Load)
COIL
3.14
16
3.14
16
3.14
16
Face Area
FPI
NCPE
4000 SERIES
5"
22 1/2"
23"1 1/2"
21 15/16"
7/8"
29 1/2"
1 11/16"
1 5/16"
3 5/16"
5 13/16"
31/32"
1 15/32"
26 1/4"
7/8"
1 1/16"
1 11/32"
15/16"
1 3/8"
2 19/32"
7/8"