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Thru-the-Wall Comfort
Heating & Cooling
Installation Guide
Thru the Wall
Heat Pump
This unit should be installed in an
Outside Wall For
Thru-The-Wall
Installation Only!
Read Installation Manual
Prior To Starting The Installation.
Please fill in the following information and file it for
future reference.
MODEL NO.______________________________
SERIAL NO.______________________________
INSTALL DATE ___________________________
This manual must be left with the homeowner for future reference.
All Units Department of Energy Listed
* Please consult the DOE Compliance Certification Database (https://tinyurl.com/NCP-
Condensers) for a list of rated combinations of indoor and outdoor units.
National Comfort Products
A Division of National Refrigeration and Air Conditioning Products, Inc.
539 Dunksferry Road • Bensalem, PA 19020-5908
(800) 523-7138
www.nationalcomfortproducts.com
NHP
Series:
3000
5000
Go Thru-the-Wall
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Table of Contents
Related Manuals for NCP Thru-the-Wall Comfort NHP 3000 Series
Summary of Contents for NCP Thru-the-Wall Comfort NHP 3000 Series
- Page 1 This manual must be left with the homeowner for future reference. All Units Department of Energy Listed * Please consult the DOE Compliance Certification Database (https://tinyurl.com/NCP- Condensers) for a list of rated combinations of indoor and outdoor units. National Comfort Products Go Thru-the-Wall A Division of National Refrigeration and Air Conditioning Products, Inc.
- Page 2 Installation Guide | Thru the Wall Heat Pumps NHP Series 3000/5000...
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Page 3: Table Of Contents
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 Page Nomenclature ................................4 Safety Warning ................................5 Before You Start ................................6 Check for Clearances ..............................7 Unit Location Considerations ............................7 Refrigerant Piping Limits .............................. 8 Leak Checking ................................ -
Page 4: Nomenclature
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000/5000 Thru the Wall Heat Pump Nomenclature 3000 NHP = National Heat Pump Refrigerant Capacity Series Generation Option Factory Use 5= R454B 18 = 1.5 Ton 3000 A = Standard 24 = 2 Ton 5000 C = Crankcase Htr... -
Page 5: Safety Warning
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 WARNING ATTENTION FOR SYSTEM CHARGING THIS UNIT IS CHARGED WITH 3.75Lbs (1.7Kg) OF HIGH VOLTAGE! Disconnect ALL power before servicing. REFRIGERANT TO BE STORED SAFELY. THE SYSTEM WILL Multiple power sources may be present. -
Page 6: Before You Start
Installation Guide | Thru the Wall Heat Pumps Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 NHP Series 3000/5000 CAUTION WARNING Scroll compressors should NEVER be used to evacuate the air Do not use means to accelerate the defrosting process or to clean, conditioning system. -
Page 7: Check For Clearances
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. -
Page 8: Refrigerant Piping Limits
Installation Guide | Thru the Wall Heat Pumps Installation Guide | NHP Series 3000 / 5000 Thru the Wall Heat Pumps NHP Series 3000/5000 *Call National Comfort Products Refrigerant Piping for Greater Line Lengths All pipe-work shall include protection from physical damage in operation and service, and be in compliance with national and local codes and standards, such as ASHRAE 15, ASHRAE 15.2, IAPMO Uniform Mechanical Code, ICC Handler... -
Page 9: Leak Checking
NHP Series 3000 / 5000 Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 Installation Guide | Thru the Wall Heat Pumps Step 3: 8. Install the refrigerant lines using the following procedure (See Steps 1 thru 4.) Flux the copper tube and a. -
Page 10: Evacuation
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000/5000 Step 5a: 1. Connect the vacuum pump to the service ports of the liquid line and vapor line service valves. If the vacuum pump lines do not contain shut-off valves, Using a liquid soap solution hook up the vacuum pump through a manifold gauge set, as the vacuum pump lines must be closed for step 4. -
Page 11: Electrical Connections
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 Electrical Connections High Voltage Power Supply WARNING 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. -
Page 12: System Charge Adjustment
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000/5000 System Charge Adjustment Start Up Temperature Measurements 1. Ensure that directions on page 6 through 10 have been completed. Check numbers once done. Check that the outdoor temperature is 65°F or higher before adjusting charge based on subcooling. - Page 13 Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 NATIONAL COMFORT PRODUCTS R-454B CHARGING CHART (Cooling) (Heating) Subcooling (°F) Subcooling (°F) Liquid Pressure Liquid Pressure at Service R-454B Required Liquid Line Temperature °F at Service R-454B Required Liquid Line Temperature °F Valve (psig) Valve (psig) 101 100...
- Page 14 Installation Guide | Thru the Wall Heat Pumps NHP Series 3000/5000 Installers Notes: WARNING Cooling Mode The unit must be permanently grounded. Failure to do so can cause • Heat pump door must be in place while adjusting subcooling electrical shock resulting in severe personal injury or death. •...
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Page 15: Air Flow Chart
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 NHP5243000A-** Note: All information based on the following Air Flow Chart. Required superheat varies for each system. Refer to page 24 for recommended OD Ambient 47°F 35°F 17°F superheat. -
Page 16: Demand Setting
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000/5000 Demand Defrost Curves: DEFROST CURVES Defrost Curve_1 Defrost Curve_2 Defrost Curve_3 Defrost Curve_4 Inhibitor Set point Termina�on Set point Terminate Defrost Cycle Inhibit Defrost Cycle Timed defrost Demand Defrost OCT (°F) Demand Defrost Setting Dip Switch setting On Defrost Board... -
Page 17: Maintenance
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 Maintenance At all times, NCP maintenance and service guidelines shall be followed. If in 8. The following safety checks must be performed prior to conducting doubt, consult NCP’s technical department for assistance. -
Page 18: Decommissioning/Recovery
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000/5000 Decommissioning/Recovery Checkout Procedures and Troubleshooting Checkout Procedures Note: Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered After installation has been completed, it is recommended that safely. -
Page 19: Noise, Insulated Sound Cover
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 Noise We design our unit as quiet as possible; please keep in mind when locating the unit that it does make noise. Use common precautions as you would for other mechanical appliances pertaining to noise. -
Page 20: Important! Before Removing A Warranty Compressor
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000/5000 IMPORTANT!!! BEFORE REMOVING A WARRANTY COMPRESSOR, PLEASE FILL OUT THE FOLLOWING AND CALL (800) 523-7138. REMOVAL OF COMPRESSOR WITHOUT FACTORY VERIFICATION CAN LEAD TO WARRANTY CREDIT BEING DENIED Incoming Voltage to Compressor at Contactor is:__________Volts Compressor Starting AMP Draw:__________ Ω... -
Page 21: Wiring Diagrams
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 208-230 VAC NOMINAL VOLTAGE 196 VAC MINIMUM VOLTAGE 244 VAC MAXIMUM VOLTAGE Y W R FUSED OR NON-FUSED DISCONNECT OPTIONAL CFM Fan Demand Setting BLACK Defrost Test BLACK BLACK C C RV CC... -
Page 22: Specifications, Dimensional Drawings
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000/5000 3000 Series w/matches up to 12.5 SEER2* 4 " 8 " All Units 208/230-1-60Hz Shipping Compressor Model Weight (lbs) NHP5183000A-** 10.3 4 " NHP5243000A-** 12.8 4 " Cond. Fan Motor Specs 1/4 HP, 1600 RPM, 1.3 FLA Condenser Coil Specs 3.43 ft2 Face Area, 16 FPI... - Page 23 Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 4 " 5000 Series w/ matches up to 13.5 SEER2* 8 " All Units 208/230-1-60Hz Compressor Shipping Model weight (lbs) NHP5185000A-** 11.0 8 " NHP5245000A-** 13.2 4 " NHP5305000A-** 10.4 15.1...
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Page 24: Matched Systems With Air Handlers
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000/5000 When installing the unit, the refrigerant charge must be adjusted to meet the subcool requirement in heating mode. The indoor unit TXV must be adjusted to meet the required superheat in cooling mode. -
Page 25: Replacement Parts - Nhp 3000 Series
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 Replacement Parts Guide | 3000 Series When replacing fan blade, the installer must make sure the fan blade Item Description NHP5183000A-** NHP5243000A-** is secured in such a way that two thirds of each fan propeller is below the radial fan mount surface. -
Page 26: Replacement Parts Guide
Installation Guide | Thru the Wall Heat Pumps NHP Series 3000/5000 Replacement Parts Guide | 5000 Series 1. When replacing 056 motor with Item Description NHP5185000A-** NHP5245000A-** NHP5305000A-** 070 motor, a new mount will be required. Contactor 142-62-101 142-62-101 142-62-101 2. - Page 27 Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 539 Dunksferry Road | Bensalem, PA 19020 | 215-244-1400 | 1-800-523-7138 THRU-THE-WALL CONDENSING UNIT & HEAT PUMP LIMITED WARRANTY 1. National Comfort Products warrants to its customers that its product shall be free from defects in material and workmanship under normal use and regular service and maintenance as follows: COMPRESSORS: For five years from the date of original installation.
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Page 28: Warranty
All scroll compressors must be securely bolted, banded, and stretch wrapped to a skid in the upright position. B. Parts. All other returned parts must be securely packaged and clearly marked with its corresponding RMA number provided from NCP. - Page 29 Installation Guide | Thru the Wall Heat Pumps NHP Series 3000 / 5000 Notes...
- Page 30 Installation Guide | Thru the Wall Heat Pumps NHP Series 3000/5000 Notes...
- Page 32 National Comfort Products 539 Dunksferry Road | Bensalem, PA 19020-5908 (800) 523-7138 www.nationalcomfortproducts.com 14291155 IM NHP TTW HEAT PUMP 2025...
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