KHF - SERIES A FAN COIL UNITS
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
SAFETY SYMBOLS & CONSIDERATIONS ................ 3
SECTION ONE - RECEIPT &
INITIAL INSTALLATION ............................................. 4
KHF Series Features ................................................................................. 4
Preface ............................................................................................. 4
Unpacking & Inspection .......................................................................... 5
Handling & Installation ............................................................................ 5
Coils ............................................................................................ 6
Cooling/Heating Medium Connections ................................................ 7
Drain Pan ............................................................................................. 8
Auxiliary Drain Pans ................................................................................. 8
Ductwork Connections ............................................................................ 9
Electrical Connections ............................................................................. 9
Electrical Enclosure .................................................................................. 9
Telescoping Bottom Panel ...................................................................... 10
Model KHFP Horizontal Fan Coil Optional
Telescoping Bottom Panel Assembly,
Typical Installation Instructions ....................................................... 10
Service & Clearance Requirements ..................................................... 11
Height Restricted Application ............................................................... 12
Width Restricted Application ................................................................. 13
External Space Requirements ............................................................... 14
SECTION TWO - START-UP ....................................... 15
General ............................................................................................. 15
Cooling/Heating System .......................................................................... 15
Air System Balancing ................................................................................ 15
Motor & Fan Data ....................................................................................... 16
Water System Balancing .......................................................................... 19
Controls Operation ..................................................................................... 19
SECTION THREE - NORMAL OPERATION &
PERIODIC MAINTENANCE ........................................ 20
General, Motor/Blower Assembly, and Fan Deck ............................... 20
Coil ............................................................................................. 21
Electric Resistance Heater Assembly ................................................... 21
Electrical Wiring & Controls ................................................................... 21
Valves & Piping ........................................................................................... 21
Drain ............................................................................................ 21
Filters, Throwaway ..................................................................................... 22
Optional Item Installation ......................................................................... 23
Condensate Pump ............................................................................... 23
Current Switch Device ....................................................................... 23
Differential Air Pressure Switch ..................................................... 24
Discharge Air Sensor ......................................................................... 25
Low Temperature Cutout Control ................................................... 26
Condensate Float Switch Installation ............................................ 27
Replacement Parts .................................................................................... 27
Unit Weights ............................................................................................. 28
SECTION FOUR - INSPECTION &
START-UP CHECKLIST ............................................... 29
Receiving & Inspection ............................................................................. 29
Handling & Installation ............................................................................. 29
Cooling/Heating Connections ................................................................. 29
Ductwork Connections .............................................................................. 29
Electrical Connections ............................................................................... 29
Unit Startup ............................................................................................ 29
SECTION FIVE - FAN RELAY BOARD ........................ 30
Installation, Operation and Maintenance ............................................. 30
Installation - Mounting & Wiring ............................................................ 30
FRBii Inputs and Outputs ......................................................................... 32
Jumpers and Test Points ........................................................................... 33
Screw Terminal Signals and Checking Wire Harnesses ................... 34
SECTION SIX - TROUBLESHOOTING ........................ 35
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