Danfoss HPC-EM Expansion module DHP-R Installation guide
- Type
- Installation guide
4664-458-01
INSTALLATION INSTRUCTIONS
EXPANSION MODULE
HPC EM
4664-458-012 – Danfoss
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Table of contents
Installation for WCS function (warm water loading) ... 4
Installation for TWC function (tap water control)...... 6
Installation for Shunt function ....................... 8
Important information!
24 VAC 2 may only be used as voltage feed for external
equipment requiring a 0-10 V control signal, or as voltage
feed for additional modules.
24 VAC 1 must not be connected to 24 VAC 2, 24 VDC, or
other equipment that use a 0-10 V control signal or to signal
ground GND.
The two separate 24 VAC circuits may never be connected
with each other or with protective earth.
The total power load of 24 VAC 1 and 24 VAC 2, respectively,
must not exceed 50 VA.
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Expansion module, HPC EM
The operational description for the expansion module is available in the controller manual.
Installation for WCS function (warm water loading)
Application
The expansion module in WCS operational mode controls warm water loading of the
water heaters.
WCS operation is achieved by setting the switch according to the figure.
Required accessories for installation
Submersible sensor, Thermokon-Danelko AKF1004140, item no. 086U3364
One of the following modular cables:
Modular cable 0.3 m, item no. 086U4227
Modular cable 1.1 m, item no. 086U4228
Modular cable 10.0 m, item no. 086U4229
Connection block, item no. 086U5121
Other accessories
Pilot valve VVL (2-way), heat exchanger (tap water vvx), circulation pump.
System image
Heat exchanger
A heat exchanger is connected between the heat pump and the circulation for the water heaters as depicted in the
system image above.
Circulation pump
A circulation pump is connected near the heat exchanger.
Pilot valve
A pilot valve is connected between the circulation pump and the heat exchanger.
Submersible sensor
A submersible sensor is connected on the return line of the heat exchanger, as close to the heat exchanger as possible.
Heat circuit
Hot gas circuit
Cooling agent circuit
VVB VVB VVB VVB
Heat exchanger
Modular cable
Steering valve
Circulation pump
Expansion module
WCS operation
Submersible sensor
return VVX
KV
VV
VVC
DHP-R
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Connecting
Note! The maximum load may not exceed 50 VA.
Expansion module
The expansion module is mounted in the electric cabinet on the intended rail. If there is no room, the module can be
installed in an external, enclosed cabinet and connected with a longer modular cable.
• Set the switches on the front of the expansion module to the WCS position
• Connect a modular cable between HP CRM Exp.out and HPC EM Exp.in
Connections of expansion module for WCS operation:
Temperature input, T1: Submersible sensor (heat exchanger return line)
Temperature input, T2: -
Analogue output 0-10 V, AO1: Signal to pilot valve
Relay, DO1: Signal to circulation pump (no-potential closure, maximum 6 A)
Exp.in: Connection from HPC RM
Exp.out: Connection to possible additional module.
Submersible sensor
• Connect to T1 and GND
Circulation pump
• Connect to DO1.1 to 24 VAC 2.1
• Connect DO1.2 to the contactor coil (the relay coil) and further to 24 VAC 2.2
Pilot valve
• Connect AO1 to the signal input of the pilot valve
• Connect GND to pilot valve GND. If GND is missing in the pilot valve, connect GND to 24 VAC 2.2 somewhere in
the system. It is most appropriate to jumper terminals 144 and 146 in the controller cabinet.
• Connect the pilot valve terminal G to 24 VAC 2.1
• Connect the pilot valve terminal G0 to 24 VAC 2.2.
Exp.in
GGNDG
0
Y
1
Exp.out
DO1.1
T1
T2
AO1
GND
DO1.2
HPC EM
WCS
24 VAC 2.1
24 VAC 2.1
24 VAC 2.2
24 VAC 2.2
M
alt.
GG
0
Y
1
24 VAC 2.1
24 VAC 2.2
AO1
0-10V
Circ. pump
From Exp.out
Submersible sensor
Pilot valve
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Installation for TWC function (tap water control)
Application
In the TWC mode, the expansion module ensures that outgoing hot tap water and
heat water circulation have a sufficiently high temperature, to prevent the pre-
sence of Legionella bacteria.
TWC operation is achieved by setting the switch according to the figure.
Required accessories
2 PT1000 strap-on temperature detectors with 2 m of cable, item no. 086U3365
(item number corresponds to 1 transmitter)
One of the following modular cables:
Modular cable 0.3 m, item no. 086U4227
Modular cable 1.1 m, item no. 086U4228
Modular cable 10.0 m, item no. 086U4229
Connection block, item no. 086U5121
System image
Sensor, water heater
A strap-on temperature detector is connected on the supply line lead of the end heater, before the mixing valve.
Sensor, hot water return
A strap-on temperature detector is connected on the return lead of the warm water circulation, before the circulation
pump.
Heat circuit
Hot gas circuit
Cooling agent circuit
VVB VVB VVB VVB
Modular cable
Sensor, water heater
Electric cartridge
Sensor, hot water return
Expansion module
TWC function
KV
VV
VVC
DHP-R
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Connecting
Note! The maximum load may not exceed 50 VA.
Expansion module
The expansion module is mounted in the electric cabinet on the intended rail. If there is no room, the module can be
installed in an external, enclosed cabinet and connected with a longer modular cable.
• Set the switches on the front of the expansion module to the TWC position
• Connect a modular cable between HP CRM Exp.out and HPC EM Exp.in
Connections of expansion module for TWC operation:
Temperature input, T1: Sensor, water heater
Temperature input, T2: Transmitter, hot water return
Analogue output 0-10 V, AO1: -
Relay, DO1: Signal to electric cartridge, hot water (no-potential closure, maximum 6A)
Exp.in: Connection from HPC RM
Exp.out: Connection to possible additional module.
Electric cartridge
• Connect to DO1.1 to 24 VAC 2.1.
• Connect DO1.2 to the contactor coil (the relay coil) and further to 24 VAC 2.2.
Sensor, water heater
• Connect the sensor cable to T1 and GND.
Sensor, hot water return
• Connect the sensor cable to T2 and GND.
Exp.in
Exp.out
DO1.1
T1
T2
AO1
GND
DO1.2
HPC EM
TWC
24 VAC 2.1 24 VAC 2.2
Start signal for
electric cartridge
water heater
Hot water return
From Exp.out
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Installation for Shunt operation
Application
In the shunt mode, the expansion module maintains the required temperature for a
second heat circuit.
The shunt function is achieved by setting the switch according to the figure.
Required accessories
1 PT1000 strap-on temperature detector, item no. 086U3365
One of the following modular cables:
Modular cable 0.3 m, item no. 086U4227
Modular cable 1.1 m, item no. 086U4228
Modular cable 10.0 m, item no. 086U4229
Connection block, item no. 086U5121
Other accessories
Shunt valve, circulation pump.
System image
Sensor, shunt temperature
A strap-on temperature detector is connected on the supply line of the heat circuit, after the circulation pump.
Heat circuit 1
Heat circuit 2
Hot gas circuit
Cooling agent circuit
VVB VVB VVB VVB
Shunt valve
Sensor, shunt temperature
Circulation pump
Modular cable
Expansion module
Shunt function
KV
VV
VVC
DHP-R
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Connecting
Note! The maximum load may not exceed 50 VA.
Expansion module
The expansion module is mounted in the electric cabinet on the intended rail. If there is no room, the module can be
installed in an external, enclosed cabinet and connected with a longer modular cable.
• Set the switches on the front of the expansion module to the Shunt position.
• Connect a modular cable between HP CRM Exp.out and HPC EM Exp.in
Connections of expansion module for shunt operation:
Temperature input, T1: Sensor, shunt temperature.
Temperature input, T2: -
Analogue output 0-10 V, AO1: Signal to shunt valve.
Relay, DO1: Signal to circulation pump (no-potential closure, maximum 6A).
Exp.in: Connection from HPC RM.
Exp.out: Connection to possible additional module.
Sensor, shunt temperature
• Connect to T1 and GND
Circulation pump
• Connect to DO1.1 to 24 VAC 2.1.
• Connect DO1.2 to the contactor coil (the relay coil) and further to 24 VAC 2.2.
Shunt valve
• Connect AO1 to the signal input of the pilot valve.
• Connect GND to pilot valve GND. If GND is missing in the pilot valve, connect GND to 24 VAC 2.2 somewhere in
the system. It is most appropriate to jumper terminals 144 and 146 in the controller cabinet.
• Connect the pilot valve terminal G to 24 VAC 2.1.
• Connect the pilot valve terminal G0 to 24 VAC 2.2.
Exp.in
GGNDG
0
Y
1
Exp.out
DO1.1
T1
T2
AO1
GND
DO1.2
HPC EM
Shunt
24 VAC 2.1
24 VAC 2.1
24 VAC 2.2
24 VAC 2.2
0-10V
alt.
M
GG
0
Y
1
24 VAC 2.1
24 VAC 2.2
AO1
Circ. pump
From Exp.out
Shunt temperature
Shunt valve
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Danfoss HPC-EM Expansion module DHP-R Installation guide
- Type
- Installation guide
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