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Heat Controller A-VFH18DA-1, Installation, Operation & Maintenance Manual

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Heat Controller • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com

INSTALLATION, OPERATION

& MAINTENANCE MANUAL

InverterFlex

®

 Series

Outdoor Ductless Mini-Split 

Heat Pumps

A-VFH18DA-1

A-VFH24TA-1

A-VFH30QA-1

A-VFH36QA-1 

A-VFH42PA-1

Summary of Contents for A-VFH18DA-1

Page 1: ...lworth Ave Jackson MI 49203 517 787 2100 www heatcontroller com INSTALLATION OPERATION MAINTENANCE MANUAL InverterFlex Series Outdoor Ductless Mini Split Heat Pumps A VFH18DA 1 A VFH24TA 1 A VFH30QA 1...

Page 2: ...dards by authorized personnel only TABLE OF CONTENTS Safety Precautions Warnings and Cautions 3 Introduction Model Nomenclature 4 System Application 5 Installation Instructions Installation Location S...

Page 3: ...fire hazard 7 Wiring routing must be properly arranged so that control board cover is fixed properly If control board cover is not fixed perfectly it will cause overheating at connection point of ter...

Page 4: ...es ducted air handlers floor ceiling mount and console units Refer to the indoor Installation Operation and Maintenance manuals of each model for further details NOTE Depending on the type of indoor u...

Page 5: ...d to be a sole source of heat for a home building While the units can operate in low ambient conditions they cannot provide the full rated capacity for heat at low outdoor temperatures An additional h...

Page 6: ...installed in a location that does not obstruct the airflow and ensures clearance are maintained Fig 1 If installation location allows the unit to be exposed to strong winds such as coastal applicatio...

Page 7: ...location of the unit will not be subject to snow drifts heavy accumulation of snow or leaves or other seasonal debris If such a location is unavailable provide an awning for the unit Fig 4 and Fig 5...

Page 8: ...installation location information on pages 6 and 7 for more details and required clearances FIG 7 18KBTU H 32 09 in 815mm 35 39 in 899mm 12 44 in 316mm 14 88in 378mm 23 46 in 596mm 21 65 in 550mm 15 5...

Page 9: ...ace Fig 11 Connect a locally purchased drain hose Install hose to the hose barb end of the drain connector Route the hose to drain location away from the unit Repeat for each hole on the base of the u...

Page 10: ...s are square in relation to the end of the tube Use the proper diameter tube and flare nut sizes recommended by the manufacturer Insulate both lines with Amraflex or equivalent with a wall thickness o...

Page 11: ...or Unit Capacity Indoor Model Maximum Length B VFH09 49 2ft 15m B VFH12 65 6ft 20m B VFH18 24 82ft 25m Total Allowable Length based on Outdoor Unit Capacity Outdoor Model Zoning Based on Actual Number...

Page 12: ...2ft 15m 49 2ft 15m 180ft 54 9m However using the total allowable length requirement we see that an A VFH36 Tri Zone system can t exceed 157 5ft 48m Therefore we must reduce the line set length to som...

Page 13: ...oor units come with a set of copper elbow subassemblies with a female flare nut x male flare fitting Liquid Connections 18K 24K 30K 36K 42K A 1 4 6 35mm 1 4 6 35mm 1 4 6 35mm 1 4 6 35mm 1 4 6 35mm B 1...

Page 14: ...comes with the A VFH42PA 1 model IMPORTANT Due to the use of these subassemblies on the connections of the outdoor unit please be sure to accommodate for about 9 220mm of clearance from the side of th...

Page 15: ...2mm 5 28 134mm Indoor Units also come with Additional Flare Nuts for ease of installation Per the chart below each indoor model comes with one 1 or two 2 flare nuts in the sizes shown Indoor Unit Flar...

Page 16: ...ry or death 8 Connect all wiring tightly Loose wiring may cause overheating at connection points and create a possible fire hazard 9 Match terminal strip numbers labels and colors between indoor and o...

Page 17: ...t Circuit breakers and disconnect switches should be properly sized based on the required codes and the unit s nameplate requirements Fig 12 Check the unit wiring diagram for the number of conductors...

Page 18: ...form a loop in the cable Fig 13 6 Insulate any unused conductors with electrical tape so that they do not touch any other exposed electrical or metal parts 7 Replace the electrical control cover that...

Page 19: ...19 Heat Controller VFH InverterFlex Outdoor Ductless Mini Split Fig 15 Fig 16 24KBTU H Electrical Work 18KBTU H...

Page 20: ...20 VFH InverterFlex Outdoor Ductless Mini Split Heat Controller Fig 17 30KBTU H 36KBTU H Electrical Work Fig 18...

Page 21: ...al charging of refrigerant depending on line set lengths If the total line set length is less than the amount in the table below no additional Field Charging KBTU H Total allowable length for all indo...

Page 22: ...ngth so additional refrigerant is required To calculate the additional refrigerant needed multiply the additional line length by 024 oz ft 20g m for a 36KBTU H unit To get the additional line length s...

Page 23: ...installed main power turned on and wiring refrigerant lines and condensate drain lines properly connected before operating the unit Operation of the unit will depend on the setting of the thermostat o...

Page 24: ...24 VFH InverterFlex Outdoor Ductless Mini Split Heat Controller This page is left intentionally blank...

Page 25: ...25 Heat Controller VFH InverterFlex Outdoor Ductless Mini Split This page is left intentionally blank...

Page 26: ...26 VFH InverterFlex Outdoor Ductless Mini Split Heat Controller This page is left intentionally blank...

Page 27: ...27 Heat Controller VFH InverterFlex Outdoor Ductless Mini Split This page is left intentionally blank...

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