Table Of Contents - FHP 641-224 User Manual

THE ZONE CONTROLLER......................4
SPECIFICATIONS ................................5
CONTROLLER COMPONENTS ...............6
LED Indicators ..............................................................6
DIP and Rotary Switches...............................................7
Jumpers and settings......................................................8
LONWORKS® CARD OPTION...............9
WATER TO AIR OPERATION ..............10
General Description .......................................................10
Key Features and Benefits.............................................10
Inputs ..............................................................................11
Outputs............................................................................11
Control & Status Parameters and Alarms...................11
Control.........................................................................11
Status ...........................................................................12
Alarms .........................................................................12
SEQUENCE OF OPERATION ...............13
Run Conditions: .............................................................13
Occupied Mode ...........................................................13
Unoccupied Mode (night setback):..............................13
Zone Temperature .........................................................14
High Zone Temp: ........................................................14
Low Zone Temp: .........................................................14
Zone Sensor Failure: ...................................................14
Zone Setpoint Adjust: ....................................................14
Zone Unoccupied Override: ..........................................14
Freeze Protection: ..........................................................15
Fan:..................................................................................15
Constant Volume.........................................................15
VAV ............................................................................15
Zone Humidity: ..............................................................15

Table of Contents

Hot Gas Re-Heat Valve On/Off:................................. 15
Modulating Re-Heat Valve: .......................................... 16
Filter: .............................................................................. 16
Heating and Cooling - (1 and 2 Compressor Stages): 16
The heating will be enabled whenever:....................... 17
The cooling will be enabled whenever: ...................... 17
Reversing valve:............................................................. 17
Supplemental Electric Heating Stage: ......................... 17
Discharge Air Temperature: ........................................ 18
High Discharge Air Temp:.......................................... 18
Low Discharge Air Temp: .......................................... 18
Discharge Air Sensor Failure:..................................... 18
Discharge Air Control ................................................... 18
Single Outside Air Temperature (OAT) Reset: .......... 19
Multiple Outside Air Temperature (OAT) Reset: ....... 19
Leaving Water Temperature:....................................... 20
High Leaving Water Temp: ........................................ 20
Low Leaving Water Temp:......................................... 20
Leaving Water Sensor Failure: ................................... 20
WATER TO WATER OPERATION ........ 25
GENERAL DESCRIPTION ................... 27
Inputs .......................................................................... 27
Outputs........................................................................ 27
CONTROL & STATUS PARAMETERS
AND ALARMS..................................... 28
Status and Control....................................................... 28
Alarms ........................................................................ 28
SEQUENCE OF OPERATION ............... 29
Run Conditions:............................................................. 29
Occupied Mode........................................................... 29
Unoccupied Mode (night setback): ............................. 29
Auto Changeover Mode.............................................. 29
Digital Input Mode...................................................... 30
BAS Mode .................................................................. 30
Lead - Lag Compressor operation ............................... 31
Compressor 1 Runtime: .............................................. 31
Compressor 2 Runtime: .............................................. 31
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