Instructions premix Air heaters type XR10.. 60
Page 6/15
20
10
26
6
TCW
IN
OUT
11
0
80
80
65
65
85
Gas 1/2"
10
5
6.3.2 Roomthermostat
There are several possibilities to connect the heater.
1. By using the TCW OpenTherm thermostat. This offers the possibility to
modulate the burner and fan, to reset the heater and to enable summer
ventilation.(no time clock). See separate manual !
2. By using an OpenTherm clock thermostat, please ask your supplier.
3. By using an on/off (clock) thermostat.(PCP 5) Attention, when using an on/off thermostat,
the heater will not modulate and summer-ventilation is not possible. Furthermore, the so-
called delta T-regulation will not be operational and remote reset requires additional wires.
In all cases: make sure you use a screened 24Volts cable.
In a disturbance sensitive environment a so-called sealed “twisted pair” cable must
be used. Before connecting, switch off the tension from the heater. Connect the
earth shield of the cable only to the earth terminal in the heater.
6.3.4 Lockout indication
The heater has a potential free contact (max. 230Vac) for lockout indication. (see diagrams
further in this manual)
24V is available on the connection-terminals for possible use with this fault indication. This
contact is closed in a lockout condition.
6.3.5 Reset
The heater can be reset in 3 ways.
•
On the TCW thermostat.
•
On the DFC printed circuit-board within the heater, push the lower red button.
•
On a remote reset button . For the connection, see the diagram towards the end of this
manual.
6.3.6 Fuses
The heater contains 3 fuses:
•
F1 to protect the DFC regulation printed board
•
F2 to protect the DBC burner control and the pre-mix fan
•
F3 to protect the system fan and the transformer .
Replace the different fuses only by ones of the same type. See the wiring diagram for the
different values.
6.4 Air intake / combustion products discharge
Check for compliance with local / national regulations.
The combined Winterwarm combustion-air supply / combustion-
gas outlet device (Roof terminal or wall terminal) has to be used,
only so the installation is CE approved. See installation drawings.
Never connect a roof terminal for condensing appliances, rain can
damage the heater trough the discharge pipes.
Condensation in the discharge system
During heating up, it is possible that condensate is formed in the discharge system. This,
however, will evaporate if the heater is operating for a longer period of time.
Service
Reset
Red
Green
