Nortek GMH24-36MSK4DH1 Owner'S Manual Download Page 1 | Manualshive

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Owner's Manual

Installation

Instructions

Heat Pump

Air Handlers

Models:

GMH24-36MSK4DH1

GMH48-60MSK4DH1

Please read this owner’s manual carefully before operation and retain for future
reference. Specifications & illustrations subject to change without notice or incurring
obligations. If you have lost the owner’s manual, please visit www.NortekHVAC.com
for electronic version.

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Summary of Contents for GMH24-36MSK4DH1

Page 1: ...1 GMH48 60MSK4DH1 Please read this owner s manual carefully before operation and retain for future reference Specifications illustrations subject to change without notice or incurring obligations If you have lost the owner s manual please visit www NortekHVAC com for electronic version ...

Page 2: ......

Page 3: ...t in advance before reusing it 3 Please properly select the model according to actual using environment otherwise it may impact the using convenience 4 This product can t be installed at corrosive inflammable or explosive environment or the place with special requirements such as kitchen Otherwise it will affect the normal operation or shorten the service life of the unit or even cause fire hazard...

Page 4: ...proper use or misuse of the product 2 Alter change maintain or use the product with other equipment without abiding by the instruction manual of manufacturer 3 After verification the defect of product is directly caused by corrosive gas 4 After verification defects are due to improper operation during transportation of product 5 Operate repair maintain the unit without abiding by instruction manua...

Page 5: ...eparative for Installation 9 3 1 Pre Installation Instruction 9 3 2 Important Safety Instructions 9 4 Installation 11 4 1 Unit Inspection 11 4 2 Location 12 4 3 Piping Work 13 4 4 Condensate Removal 15 4 5 Ductwork 16 4 6 Electric Heater 16 4 7 Electrical Installation 19 5 Installation Check and Trial Run 24 5 1 Checking Items after Installation 24 5 2 Trial Run 24 6 Common Malfunction and Elimina...

Page 6: ...er household wastes throughout the EU To prevent possible harm to the environment or human health from uncontrolled waste disposal recycle it responsibly to promote the sustainable reuse of material resources To return your used device please use the return and collection systems or contact the retailer where the product was purchased They can take this product for environmental safe recycling ...

Page 7: ... with the kits or accessories when installing Follow all safety codes Wear safety glasses protective clothing and work gloves Use quenching cloth for brazing operations Have fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit Consult local building codes and National Electrical Code NEC for special requi...

Page 8: ...products Warnings are issued for such products sold in California as required by California Proposition 65 All new equipment shipped for sale in California will have labels stating that the product contains and or produces Proposition 65 chemicals We cannot always know when or if products will be sold in the California market Although we have not changed our processes having the same label on all ...

Page 9: ...gular plenum a minimum of 6 inches from the solid bottom 2 Product Introduction 2 1 Product Description The NORTEK air handler offer the perfect combination of superior product quality operating efficiency operating sound levels and value for money The condensing unit uses the environmentally friendly refrigerant R410A which is chlorine free to help prevent damage to the ozone layer 2 2 Optional A...

Page 10: ... Handlers 4 2 3 Physical Dimension Unit inch mm Model Dimension W D H A B GMH24 36MSK4DH1 21 1 4 540 21 1 4 540 48 1 4 1224 11 5 8 295 20 508 24 3 4 630 21 1 4 540 57 1448 11 5 8 295 20 508 GMH48 60MSK4DH1 ...

Page 11: ...electric heater kW GMH24 36MSK4DH1 24K 2 0 5 8 10 GMH24 36MSK4DH1 36K 3 0 5 8 10 GMH48 60MSK4DH1 48K 4 0 10 15 20 GMH48 60MSK4DH1 60K 5 0 10 15 20 Model Motor 230V 60Hz HP FLA 1 2 2 1 1 3 2 Unit mm Model Filter size 490 516 15 525 516 15 GMH24 36MSK4DH1 GMH48 60MSK4DH1 GMH24 36MSK4DH1 GMH48 60MSK4DH1 ...

Page 12: ...ow the waste heat and relieve the heat accumulation in the air duct During installation and debugging pay attention to check whether the temperature controller has set the fan delay and shutdown time If the temperature controller has been set the actual delay and shutdown time of the fan is equal to the temperature controller setting time plus the fan delay time of the indoor unit Model Level Heat...

Page 13: ...ns dip switch to number 2 7 Fan Performance Data External static pressure should stay within the minimum and maximum limits shown in the table below in order to ensure proper operation of both cooling heating and electric heating operation Model GMH24 36MSK4DH1 24K Level Static pressure Inches W C 0 0 1 0 15 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 Speed 1 CFM 1030 900 840 Speed 2 CFM 1080 960 900 840 ...

Page 14: ...FM 1640 1500 1450 1350 Speed 2 CFM 1680 1560 1500 1380 1300 Speed 3 CFM 1810 1690 1620 1550 1380 Speed 4 CFM 1930 1830 1770 1710 1580 1430 1280 Speed 5 CFM 2200 2110 2040 1980 1860 1720 1620 1490 1380 Speed 6 CFM 2240 2190 2145 2100 2010 1870 1750 1615 1500 1380 Speed 7 CFM 2280 2240 2200 2180 2130 2080 2000 1880 1750 1600 1420 Speed 8 CFM 2300 2260 2220 2190 2140 2090 2040 1980 1930 1800 1700 155...

Page 15: ...tall the product is on hand before starting 3 1 3 Codes Regulations This product is designed and manufactured to comply with national codes It is installer s responsibilities to install the product in accordance with such codes and or any prevailing local codes regulations The manufacturer assumes no responsibilities for equipment installed in violation of any codes or regulations 3 1 4 Replacemen...

Page 16: ...assage of laws A certified technician must perform the installation and service of this product Should questions arise contact your local EPA office Due to high system pressure and electrical shock in potential installation and service work can be dangerous Only trained and qualified persons are permitted to install or service this equipment Observe all warnings contained in this manual and labels...

Page 17: ...stalled in an enclosed area such as a garage utility room or parking area and a carbon monoxide producing device is operated therein there must be adequate ventilation directly to outside This ventilation is necessary to avoid the danger of CO poisoning which can occur if a carbon monoxide producing device continues to operate in the enclosed area Carbon monoxide emission can be re circulated thro...

Page 18: ...emergency drain pan is required directly under the unit See local and state codes for requirements When installing this unit in an area that may become wet elevate the unit with a sturdy non porous material In installations that may lead to physical damage i e a garage it is advised to install a protective barrier to prevent such damage This air handler is designed for a complete supply and return...

Page 19: ...pe Model External diameter inch Gas pipe Liquid pipe GMH24 36MSK4DH1 GMH48 60MSK4DH1 Φ3 4 Φ3 8 4 3 2 Piping Preparation 4 3 2 1 Solder Connection All cut ends are to be round burr free and cleaned Failure to follow this practice increases the chances for refrigerant leakage ...

Page 20: ...Air Handlers 14 ...

Page 21: ...to prevent rain water from pouring in and cause property loss or personal injury 3 Condensate drain pipe should be connected into special drain system for air conditioner 4 The drain pan has primary and secondary drain connection Condensate removal is performed by attaching a 3 4 PVC pipe to the evaporator coil pan and terminated in accordance with local or state Plumbing HVAC codes The installati...

Page 22: ... ductwork grills special filters accessories etc are accounted for in total resistance See fan performance data in this manual Do not operate the unit without all ductwork completed Do not operate this product without all ductwork attached Inadequate ductwork that restricts airflow can result in improper performance and compressor or heater failure Ductwork is to be constructed in a manner that li...

Page 23: ...eration and ensure the electric heating is turned off before the fan to avoid unsafe Refer to the Fan Performance Data section of this manual otherwise it is possible to cause an exception and dry risk of electric heating 4 6 1 Electric Heater Kits Available SN Kit Description Ref air handler use ton 1 21 4227 00 Circuit breaker 5kW heat strip 2 0 3 0 2 21 4216 00 Circuit breaker 8kW heat strip 2 ...

Page 24: ...he circuit breaker lugs or stripped red and black wires for heater kit without circuit breaker and tighten 7 Connect ground wire to ground lug 8 Knock off appropriate area of the plastic circuit breaker cover on the access panel of the air handler Knock off the holes according to the actual installation number and positions of circuit breakers If circuit breaker is not installed do not knock off t...

Page 25: ... fixed The external power cords the thermostat wires and thermostat can t directly contact any hot objects For example they must not contact chimney pipes warm gas pipes or other hot objects The external power cords the thermostat wires and thermostat must not be squeezed Never pull stretch or bend the wires The external power cords the thermostat wires and thermostat must not collide with any met...

Page 26: ... and thermostat with at least 3mm contact gap The units must be able to be plugged or unplugged Circuit breaker and power cord specifications listed in the above table are determined based on the maximum power input of the units Specifications of circuit breaker are based on a working condition where the working temperature is 40 C If working condition changes please adjust the specifications acco...

Page 27: ...up the terminal screw 2 For strand wires as shown below 1 Use wire cutters to cut off the wire end and then peel away about 10mm of the insulation layer 2 Use a screwdriver to unscrew the terminal screw on the terminal board 3 Use a round terminal fastener or clamp to fix the round terminal firmly on the peeled wire end 4 Locate the round terminal conduit Use a screwdriver to replace it and tighte...

Page 28: ...ong wire connection may burn the electrical components Connect the wires firmly to the wiring box Incomplete installation may lead to fire hazard Please use wire clamps to secure the external covers of connecting wires Insulators must be clamped securely otherwise electric leakage may occur Ground wire should be connected Wires of indoor unit Only for air handler without electric heater ...

Page 29: ... of the electric box cover Do not bundle up the thermostat wires or lay them side by side otherwise errors will occur High and low voltage wires should be secured separately Secure the former ones with big clamps and the latter ones with small clamps Use screws to tighten up the thermostat wires and power cords of unit on the terminal board Wrong connection may lead to fire hazard If the thermosta...

Page 30: ...dly Hazard of electricity leakage Check if the wiring conforms to the wire gage Malfunction might happen and parts might be burned Check if there is obstruction blocking the air inlet outlet It may cause deficiency of cooling heating capacity Check if the piping length and refrigeration charging volume has been recorded Uncertain about the refrigerant charging volume Check if the piping connection...

Page 31: ...n If the unit doesn t run normally please check the following items before ask for service Phenomenon Reason Treatment The unit can not be activated The unit doesn t connect with power supply Connect with power supply Low voltage Check if circuit voltage is within rated scope Fuse broken or breaker trips off Replace fuse or connect breaker The unit operates but stops immediately Air inlet outlet o...

Page 32: ... is noise when electronic expansion valve initialization There is consecutive sound when cooling That s sound for gas refrigerant flowing in the unit There is sound when unit starts or stops That s sound for gas refrigerant stops flowing There is slight and consecutive sound when unit is running or after running That s sound for operation of drainage system The unit blows out dust When unit runs a...

Page 33: ...ash means light on 0 5S then light out 0 5S Indoor fan failure Light out 3S then flash twice Indoor tube temperature sensor failure Light out 3S then flash four times Indoor air outlet temperature sensor failure Light out 3S then flash six times 7 Maintenance and Care Regular check maintenance and care should be performed by professional personnel which will prolong the unit life span 7 1 Drain Pi...

Page 34: ...put on the old motherboard installer need not to replace short driven electrical 8 After Sales Service In case the air conditioning unit you bought has any quality problem or you have any inquiry please contact the local after sales service agency designated by factory Warranty should meet the following requirements 1 First run of the unit should be operated by professional personnel from factory ...

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Page 36: ...Specifications illustrations subject to change without notice or incurring obligations O Fallon MO 03 22 Nortek Global HVAC LLC 2022 All Rights Reserved 797F 0322 ...

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