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Installation Guide for NHPA Split-System Heat Pumps

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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 HEAT PUMP WILL DECREASE 

PERFORMANCE AND CAUSE PREMATURE 

EQUIPMENT FAILURE AND VOID ALL 

WARRANTIES. CONSULT FACTORY WITH ANY 

QUESTIONS. 

Before You Start

nit

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.

Summary of Contents for NHPA 3000 Series

Page 1: ...lation National Comfort Products A Division of National Refrigeration Air Conditioning Products Inc 539 Dunksferry Road Bensalem PA 19020 215 244 1400 1 800 523 7138 Fax 215 639 1674 HEATING A C EQUIP...

Page 2: ...Leak Checking Page 8 Evacuation Electrical Connections Page 9 High Voltage and Power Supply Page 10 Start Up Sequence of Operations Page 10 Refrigerant Charging Page 12 Maintenance Checkout Procedure...

Page 3: ...y 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 qualified licensed service personnel for proper...

Page 4: ...uctions 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 proble...

Page 5: ...ved 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 gril...

Page 6: ...ted 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...

Page 7: ...he heat pump 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 li...

Page 8: ...valent 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 servic...

Page 9: ...onnected 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 han...

Page 10: ...l 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 an...

Page 11: ...nder the coil must be piped per item number 12 under the Unit Location Considerations section of this manual System Charge Adjustment Temperature Measurements Check the outdoor temperatures Subcooling...

Page 12: ...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...

Page 13: ...ng 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 hea...

Page 14: ...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 O...

Page 15: ...Installation Guide for NHPA Split System Heat Pumps 15...

Page 16: ...00 19 000 ELECTRICAL 208 230 60 1 12 13 78 20 208 230 60 1 10 16 8 25 Volts Hertz Phase Min AWG Wire Min Cir Ampacity Max Fuse COMPRESSOR 9 0 56 3 10 9 62 9 RLA Amps LRA Amps FAN MOTOR 0 25 1500 1 4 0...

Page 17: ...5 HP 1500 RPM 14270049 14270049 10 14 Prop Fan 14214033 14214033 11 Motor Mount 14270102 14270102 12 Access Panel 3000 14256780 14256780 13 Top Panel 3000 14256303 14256303 14 Right Side Panel 1425631...

Page 18: ...ndard AHRI 270 2008 As an option we offer an Insulated Sound Cover for installation over the inside cover of the unit Sound Without Indoor Cover 70 4 dba Standard AHRI 350 2008 Sound With Indoor Cover...

Page 19: ...all other warranties express or implied arising by operation of law or otherwise including without limitation merchantability and fitness for a particular purpose whether or not the purpose or use has...

Page 20: ...ial number whichever occurs first then Customer may take the compressor to any Authorized Copeland Distributor for replacement of said compressor If the defect is reported to National Comfort after on...

Page 21: ...ta Limitations All installations should factor a proper building heat gain along with appropriate duct sizing and electrical supply wiring to be figured by a professional engineer familiar with local...

Page 22: ...____________________ ________________________________________________________________________ ________________________________________________________________________ _________________________________...

Page 23: ...____________________ ________________________________________________________________________ ________________________________________________________________________ _________________________________...

Page 24: ...Installation Guide NHPA Heat Pump 14299144 7 2016 National Comfort Products 539 Dunksferry Road Bensalem PA 19020 5908 800 523 7138 Fax 215 638 1674 HEATING A C EQUIPMENT NATIONAL COMFORT PRODUCTS...

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