Document: IV_MCEE_2016_11_22
Modifications reserved
9
4.3.3
Advanced options
4.3.3.1 External condensing unit relay
The PCB features a relay that can make or break an external
condensing unit supply or control line. For further information,
please contact Multicalor and the condensing unit manufactu-
rer. The coolrequest terminal is RE 1.
4.3.3.2 Burner relay
This contact is used to create a heat request on the boiler. or it
can be used to power a solenoid or a circulator. It could also be
used to power an oil burner on an oil fired boiler. The RE 3
connector will close when the MC unit needs heat, open when
the air temperature is higher than the calculated set–point.
4.3.3.3 Heat pump relay
The PCB features a relay RE2 that can be used to control a
heat pump.
Contact us for more information.
4.3.3.4 3-way Valve
It’s possible to control a 3-way valve via the 0-10V control
voltage.
Contact us for more information.
4.3.3.5 Extension board
It’s possible to connext an extension PCB board to achieve
multiple zone control.
For more information contact the manufacturer.
4.4
Installing the hot water supply lines
The diameter of the supply lines is 28mm. Usually hot water
supply is from the front, but for ease of installation the supply
lines can also be brought in from the sides or the top of the unit
(UP F only). The heat exchanger is installed with rubber grom-
mets as to minimise leakage.
L
Install an automatic air bleed valve in the supply circuit.
L
Install ball valves and flexible tubing so the heat exchan-
ger can be easily removed for inspection or cleaning.
4.4.1
Hydraulic installation, simple version
You can choose to install the MC in a simple way. However, this
will result in a loss of certain options.
If you choose this way of installing, it is adviseable to have the
water temperature of the boiler limited by means of a weather
dependent controller.
1
2
3
4
22
2
5
Onderdeel
Functie
1
Air heater MC-EE
2
Boiler
3
Thermostat
4
Optional outside sensor
5
One-way valve
