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Outdoor Heat Pump for Manufactured Housing
User's Information/Installation Instructions
13 SEER R-410A High Effi ciency Split System
These units have been designed and tested for capacity and effi ciency in accordance with A.R.I.
Standards. Split System Heat Pump units are designed for use with a wide variety of fossil fuel
furnaces, electric furnaces, air handlers, and evaporator coil combinations.
These instructions are primarily intended to assist qualifi ed individuals experienced in the proper
installation of heating and/or air conditioning appliances. Some local codes require licensed instal-
lation/service personnel for this type of equipment. Read all instructions carefully before starting
the installation.
USER'S INFORMATION
Read this owner information to become familiar with the capabilities and use of your appliance.
Keep this with literature on other appliances where you have easy access to it in the future. If a
problem occurs, check the instructions and follow recommendations given. If these suggestions
don't eliminate your problem, call your servicing contractor.
Heat Pump Principle of Operation
WINTER HEATING
1. Outdoor air enters heat pump.
2. Cold, heat-transfer section (outdoor coil)
extracts heat from outdoor air as refrigerant
evaporates from a liquid to a gas.
3. Refrigerant, compressed to a hot gas by
heat pump, carries the heat to the hot heat-
transfer section (indoor coil).
4. Hot, heat-transfer section (indoor coil)
releases the heat to indoor air as refrigerant
condenses from a gas to a liquid.
5. Air handler circulates the heat throughout
the home.
6. Refrigerant returns to outdoor coil and
evaporates once again to absorb more
heat.
IMPORTANT
SUMMER COOLING
1. Indoor air enters the air handler section.
2. Cold, heat-transfer section (indoor coil)
extracts heat from indoor air as refrigerant
evaporates from a liquid to a cold gas.
3. Refrigerant, drawn to heat pump and
compressed to a hot gas by heat pump,
carries the heat outdoors.
4. Hot, heat-transfer section (outdoor coil)
releases the heat as refrigerant condenses
from a gas to a liquid.
5. Heat pump (outdoor fan) discharges the
heat to outside air.
6. Refrigerant returns to indoor coil and
evaporates once again to absorb more
heat.
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Summary of Contents for Nordyne NT4QD
- Page 1 Outdoor Heat Pump for Manufactured Housing User’s Information/Installation Instructions 13 SEER R-410A High Effi ciency Split System These units have been designed and tested for capacity and effi ciency in accordance with A.R.I. Standards. Split System Heat Pump units are designed for use with a wide variety of fossil fuel furnaces, electric furnaces, air handlers, and evaporator coil combinations.
- Page 2 OPERATING INSTRUCTIONS 2. Set the thermostat temperature to the desired temperature level using the temperature selector. Please refer to TO OPERATE YOUR HEAT PUMP the separate detailed thermostat user’s FOR COOLING — manual for complete instructions regarding thermostat programming. The outdoor unit 1.
- Page 3 of snow and ice on the heat transfer coil. TO MAINTAIN YOUR HEAT PUMP — This is normal, and the unit will periodically defrost itself. During the defrost cycle, the outdoor fan will stop, and the compressor CAUTION: will continue to run and heat the outdoor coil, causing the snow and ice to melt.
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Page 4: General Information
SAFETY CONSIDERATIONS GENERAL INFORMATION Pressures within the System — Split Read the following instructions completely before system heat pump equipment contains liquid performing the installation. and gaseous refrigerant under pressure. Installation and servicing of this equipment CAUTION: should be accomplished by qualifi ed, trained personnel thoroughly familiar with this type of equipment. -
Page 5: Installing The Outdoor Unit
General — Once outdoor and indoor unit outdoor unit must be installed in such a manner placement has been determined, route refrigerant that airfl ow through the coil is not obstructed and tubing between the equipment in accordance with that the unit can be serviced. sound installation practices. -
Page 6: Electrical Connections
jurisdiction. Use of rain tight conduit is ELECTRICAL CONNECTIONS recommended. Electrical conductors shall have minimum circuit ampacity in compliance with the outdoor unit rating label. The facility shall employ WARNING: electrical circuit protection at a current rating no greater than that indicated on the outdoor unit Turn off all electrical power at the main rating label. -
Page 7: Air Handler
Thermostat G R W 2 C E O Y NOTE: Jumper between W2 and E is required when no OD T-Stat is used. Green Brown Orange For 2-Stage Heater Kits Black Air Handler Heat Pump OD Section Typical Heat Pump with Standard Air Handler... - Page 8 A typical installation with a heat pump thermostat, air handler, and heat pump with an outdoor thermostat. Thermostat G R W 2 C E O Y Green White Grey Air Handler Heat Pump OD Section Typical Heat Pump Air Handler w/Outdoor Thermostat...
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Page 9: Functional Checkout
Prior to applying electrical power to the outdoor 20 psig. Please note that the switch interrupts unit, ensure that the unit has been properly and the thermostat inputs to the unit. Thus, when the securely grounded, and that power supply switch opens and then closes, there will be a 5 connections have been made at both the facility minute short cycling delay before the outdoor... - Page 10 pin to “C” on terminal strip. This will initiate OUTDOOR THERMOSTAT (if supplied) a defrost test in 5, 10 or 15 seconds (This is determined by the 30, 60 or 90 minute The outdoor thermostat prevents the electrical defrost pin settings. The factory setting will auxiliary heat (if used) from operating above be 30 minutes).
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Page 11: Adjustment Of Refrigerant Charge
Anti Short Cycle Timer Test Adjustment of Refrigerant Charge: The 5 minute time delay feature can be bypassed CAUTION: or shortened to 1 second by jumping the “Test” to “C” terminal. Split system heat pump equipment Note: If jumper is left on the “Test” to “common” contains liquid and gaseous refrigerant pins permanently, the defrost cycle will become under pressure. - Page 16 Refrigerant Charging Charts for Cooling Mode of Operation 13 SEER Split System Matched with TXV Equipped Indoor Coils -018K Charging Chart Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F] -024K Charging Chart Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F]...
- Page 17 Refrigerant Charging Charts for Cooling Mode of Operation 13 SEER Split System Matched with TXV Equipped Indoor Coils (Continued) -030K Charging Chart Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F] -036K Charging Chart Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F]...
- Page 18 Refrigerant Charging Charts for Cooling Mode of Operation 13 SEER Split System Matched with TXV Equipped Indoor Coils (Continued) -042K Charging Chart Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F] -048K Charging Chart Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F]...
- Page 19 Refrigerant Charging Charts for Cooling Mode of Operation 13 SEER Split System Matched with TXV Equipped Indoor Coils (Continued) -060K Charging Chart Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F]...
- Page 24 INSTALLER: PLEASE LEAVE THESE INSTALLATION INSTRUCTIONS WITH THE HOMEOWNER. ¢708998u¤ 7089980 7089980 Specifi cations and illustrations subject to change without notice and without incurring obligations. Printed in U.S.A. (01/09)
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