Technical data

12
VVMIFI102
6.4 Connecting hot water sensor
Connect the hot water sensor to the designated terminal
block. The sensor should be positioned a third way up
from the bottom in the water heater which is supplied with
incoming cold water.
See separate manual for the control system.
6.5 Connecting sensor for system supply
temperature
The system supply sensor must always be installed on the
system’s supply pipe after the auxiliary heater. The sensor
must be positioned so that the heated water has been able
to mix properly.
See separate manual for the control system.
6.6 Connecting external start brine pump
(passive cooling option)
Potential free connection between terminal blocks 127-
128 that start the brine pump. This function can be used
for passive cooling from the brine circuit. Connect to the
incoming brine pipe.
See separate manual for the control system.
6.7 Connecting exchange valve for hot
water
See separate manual for the control system.
6.8 Connecting room sensor (option)
• Remove the front cover from the heat pump.
• Route the room sensor’s connecting cable through the
opening in the rear piece up to the connecting block.
• Connect the sensor to the designated terminal block.
See separate manual for the control system.
⚠
Note that the room sensor’s connecting voltage is
extra low protection voltage. Also note that this is an
active sensor supplied with 24 VAC.
⚠
24 VAC 1 must not be connected together with:
• 24 VAC 2
• 24 VDC
• Other equipment that uses 0-10V control signal
• Signal ground GND
⚠
24 VAC 2 must only be used as power supply to:
• External equipment that requires 0-10V control
signal
• Auxiliary modules
⚠
The two separate 24 VAC circuits must never be con-
nected to each other or to protective ground.
⚠
The total power load on 24 VAC 1 respectively 24
VAC 2 must not exceed 50VA.
6.9 Connecting pressure and/or flow
switch (option)
Connect the pressure and/or flow switch for the brine side
to the intended terminal block 123-124 at the same time
as removing the bridge. When using both the pressure and
flow switch. these must be connected in series.
See separate manual for the control system.
6.10 Connecting start/stop auxiliary heater
Start/stop auxiliary heating connected to terminal block
133-134 (24 VAC)
See separate manual for the control system.
6.11 Connecting external buzzer
Active alarm produces 24 VAC out on terminal block 135-
136.
See separate manual for the control system.
6.12 Connecting system pump
Start/stop of the house system pump 24 VAC.
See separate manual for the control system.
6.13 Connecting control signal for auxiliary
heater
See separate manual for the control system.
⚠
24 VAC 1 must not be connected together with:
• 24 VAC 2
• 24 VDC
• Other equipment that uses 0-10V control signal
• Signal ground GND
⚠
24 VAC 2 must only be used as power supply to:
• External equipment that requires 0-10V control
signal
• Auxiliary modules
⚠
The two separate 24 VAC circuits must never be con-
nected to each other or to protective ground.
⚠
The total power load on 24 VAC 1 respectively 24
VAC 2 must not exceed 50VA.
Sensor room 0-10 V
(option)
Exchange valve
Any passive cooling
brine pump
Any external
buzzer 24 VAC
Any Start/
stop auxiliary
heater
Any Pressure
switch brine
Flow switch
(option)
System pump
Analogue control
signal for auxiliary
heater
NOTE! Bridge
removed at pres-
sure switch brine
Flow switch
Bridged at delivery
Hot water sensor
PT1000
Sensor system sup-
ply temperature
PT1000