Table of Contents
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Temperzone Unit Controller 6 - Operation and installation- Hydronic
Contents
1.
Introduction ....................................................................................................................................... 4
2.
Features ............................................................................................................................................. 4
3.
Lower board connections .................................................................................................................. 5
3.1.
Power supply terminals .............................................................................................................. 6
3.2.
Output terminals ......................................................................................................................... 6
3.3.
Input terminals ............................................................................................................................ 7
4.
Upper board connections................................................................................................................... 9
4.1.
Digital input signals .................................................................................................................... 9
4.2.
Digital output signals ................................................................................................................ 10
4.3.
Analogue output signals ........................................................................................................... 10
4.4.
Communication ports ............................................................................................................... 11
4.4.1.
Temperzone TZT-100 thermostat connection ...................................................................... 11
4.4.2.
Power+ inverter driver connection ....................................................................................... 12
4.5.
Electronic expansion valves ..................................................................................................... 13
5.
Operation ......................................................................................................................................... 13
5.1.
Remote on/off ........................................................................................................................... 13
5.2.
Variable duty units ................................................................................................................... 13
5.3.
Water flow valve Y2 ................................................................................................................ 13
5.4.
Indoor fan control ..................................................................................................................... 14
5.5.
Heating mode ........................................................................................................................... 14
5.6.
Crankcase heater ....................................................................................................................... 14
5.7.
Electronic expansion valve control .......................................................................................... 14
5.8.
Demand response management ................................................................................................ 15
6. Protection functions ..................................................................................................................... 15
6.1.
Minimum compressor run time ................................................................................................ 15
6.2.
Minimum compressor off time ................................................................................................. 15
6.3.
Minimum compressor cycle time ............................................................................................. 15
6.4.
High pressure protection (HP) .................................................................................................. 15
6.5.
Loss of refrigerant protection (LOR) ....................................................................................... 16
6.6.
High suction line temperature (HiST) ...................................................................................... 16
6.7.
Indoor coil frost protection (FROST) ....................................................................................... 16
6.8.
High discharge line temperature protection (HDT).................................................................. 17
6.9.
No Water Flow Protection ........................................................................................................ 17
6.10.
Water Float Protection .......................................................................................................... 17
6.11.
Low output water temperature protection ............................................................................. 18
6.12.
Compressor lock-out ............................................................................................................. 18
6.13.
Sensor alarm ......................................................................................................................... 18
6.14.
Loss of RS485 communications alarm ................................................................................. 18
Page 2 of 21
Issue 1
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