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FHP560 Controller
Applications Manual
Bosch Thermotechnology Corp.
Data subject to change
Page____ of ____
11.11 HP + BOIL HGRH + (SDS-SDP)
UNIT TERMINAL BLOCK
TO BACnet
MS/TP
NETWORK
LWTS
DATS
RED
GREEN
WHITE
BLACK
TERMINATION DETAIL
RNET: SENSORS
T1
T2
A
A
B
B
C
C
641-264
IEM
REFER TO UNIT WIRING DIAGRAM FOR FURTHER DETAILS
FHP560
EWTS
STANDARD COMPONENTS:
DATS - DISCHARGE AIR TEMPERATURE SENSOR
LWTS - LEAVING WATER TEMPERATURE SENSOR
EWTS - ENTERING WATER TEMPERATURE SENSOR
Heat Pump Sequence of Operation – HP + BOIL HGRH + (SDS-SDP)
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 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.
Smoke Detector Switch:
A
fi
eld installed smoke detector provides a contact closure at the con
fi
gured input (IN-5 or IEM) during a smoke event, and will initiate emergency
shutdown procedures after 5 seconds.
When the unit is shutdown by the smoke detector the unit will be set as follows:
Supply fan will be off (user configurable)
Compressor(s) will be off
The unit may be con
fi
gured to operate the fan during a smoke event for speci
fi
c safety applications; system integrator must determine the
appropriate fan behavior.
Secondary Drain Pan:
The Secondary Condensate Drain Pan (SDP) option must be con
fi
gured by the equipment integrator. A factory installed SDP is tied in to the
controller at the con
fi
gured input (IN-5 or IEM) and used to monitor condensate levels. If an open contact is detected at the controller input for
more than 10 secs during normal heating/cooling operation, compressor operation is ceased and an alarm is generated. Normal compressor
operation is restored once a contact closure is reestablished at the input.
Boilerless Control:
Boilerless Control (BLC) option must be con
fi
gured by the equipment integrator. A factory installed entering water temp sensor in IN-5 (IN-2 if
IN-5 is unavailable) is used to enable boilerless control. Entering water temperature values less than 40°F (user con
fi
gurable) will enable boilerless
control.
Compressor operation is disabled upon boilerless control signal being activated. An electric heat package must be installed for boilerless control
option. Electric heat will be enabled on output BO-5 when boilerless signal is activated.
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.
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
X
X
Cooling Setpoint
X
X
X
Supply Fan Command
X
X
X
Compressor Stage 1 Output
X
X
X
Compressor Stage 2 Output
X
X
Reversing Valve Command
X
X
X
Occupied Command
X
X
X
X
X
Discharge Air Temperature
X
X
Leaving Water Temperature
X
X
Entering Water Temperature
X
Aux Electric Heat Output
X
Dehumidi
fi
cation Setpoint
X
X
X
Reheat Status
Reheat On/Off (Rh S/S)
X
X
X
High Return Air Humidity
X
Zone Humidity
X
X
X
X
Smoke Detector Status
X
X
Condensate Over
fl
ow
X
X
Secondary Condensate Over
fl
ow
X
X
Lockout Alarm
X
X
Schedule
Totals
5
0
3
5
5
1
1
11
5
15
Total Hardware
Total Software
13
23
15
Table 19
