Applications Manual FHP560 Controller
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Bosch Thermotechnology Corp.
Data subject to change
Page____ of ____
11.2 HP + HGRH
UNIT TERMINAL BLOCK
TO BACnet
MS/TP
NETWORK
LWTS
DATS
RED
GREEN
WHITE
BLACK
TERMINATION DETAIL
RNET: SENSORS
ZONE COMBO SENSOR (TEMP+RH)
STANDARD COMPONENTS:
DATS - DISCHARGE AIR TEMPERATURE SENSOR
LWTS - LEAVING WATER TEMPERATURE SENSOR
REFER TO UNIT WIRING DIAGRAM FOR FURTHER DETAILS
FHP560
Heat Pump Sequence of Operation – HP + HGRH
Supply Fan Start/Stop:
The supply fan will be started according to the schedule. After the supply fan has been started the control sequence will be enabled.
Zone Control:
The compressor will cycle to maintain the zone temperature at setpoint.
Heat Pump Control:
When the zone temperature falls below the zone temperature setpoint the reversing valve(s) will be disabled to provide heating when the
compressor is running. When the zone temperature rises above the zone temperature setpoint the reversing valve will be enabled to provide
cooling when the compressor is running.
Night Setback:
When in “unoccupied”, the unit will cycle as necessary to maintain the night setback zone temperature at setpoint. A differential prevents the unit
from cycling excessively.
Shutdown:
When the unit is shutdown by either a stop command or system safety the unit will be set as follows:
Supply fan will be on (user configurable)
Compressor(s) will be off
Hot Gas Reheat:
Once the heat/cool setpoint has been satis
fi
ed and relative humidity is above setpoint, the unit will operate in hot-gas reheat mode to actively
remove humidity from the space until the the humidity setpoint has been satis
fi
ed, or there’s another call for heating or cooling.
Relative humidity readings may be acquired from a space ZS combo Pro or standard sensor, 0-5V sensor in IN-1/IN-2, or over a network; software
must be con
fi
gured accordingly.
Humidity setpoint may be adjusted from a space ZS sensor Pro, network, or BACview interface.
HEAT PUMP
Point Name
Hardware Points
Software Points
Show On
Graphic
AI
AO
BI
BO
AV
BV
Sched
Trend
Alarm
Zone Temperature
X
X
X
X
Heating Setpoint
X
Cooling Setpoint
X
Supply Fan Command
X
Compressor Stage 1 Output
X
Compressor Stage 2 Output
X
Reversing Valve Command
X
Occupied Command
X
X
X
X
Discharge Air Temperature
X
Leaving Water Temperature
X
Dehumidi
fi
cation Setpoint
X
X
Reheat Status
Reheat On/Off (Rh S/S)
X
X
High Return Air Humidity
X
Condensate Over
fl
ow
X
Lockout Alarm
X
Schedule
Totals
3
0
1
5
4
1
1
1
3
4
Total Hardware
Total Software
9
10
4
Table 10
