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Heating surface, water
Connecting the heating surface must be done by an authorized plumber.
Heating surface for Comfort CT300 is a surface that should be installed in the ducting.
The heating unit is delivered as accessory and consists of heating surface with temperature sensor
T9 and frost-protection B3, actuator and regulating valve.
The heating surface should be connected, scavenged and checked for any leakages before start-
ing the unit.
The dirt-catcher should be checked and cleaned after a thoroughly flushing of the system.
Air flow
Flow
Return
B3
T9
2
1
M
Heating surface
3
Note that the temperature sensor T9 and frost-protection B3 is placed at the heated side of the heating
surface close to the return connection. See electrical chart.
1:
Actuator and regulating valve:
Danfoss AME 140/24V 0-10V signal, 2-way valve VZ2 Kvs 0,4, (Nilan delivery) Kvs-value must be
checked in accordance with supply.
Differential pressure: 0,1
– 0,6 bar
There is calculated with a cooling of 20°C over the heating surface at a flow of 60°C.
2:
Scavenging (not Nilan delivery)
3:
Dirt-catcher (not Nilan delivery)
Figure 5: Connecting the heating surface, suggestion