Instruction manual DXB heater
page 12
5.6 Description heater control HC
The heater control HC controls the unit and communicates with the room thermostat.
Functions integrated in the heater control HC are:
-Two wire communication with room thermostat
-ionisation flame guard on burner
-controlling the fuel valve
-guarding the temperature of the heat exchanger
-LED signals status of heater, heat demand: green, failure: red
-Status of heater on 8 segment display on heater control HC
-reset of heater
-service mode function
Lay-out print board
J2
Fuse 5AT
J4
J8
U11
S1
J12
J6
S2
S3
J9
T2
J15
J7
0
1
1 2 3 4 5 6 7 8
on
Argus vision
J2
Main power connection 230V
J4
Connection for fuel valve and the N for system fan relay
J6
Connection for room thermostat, appliance recognition
J7
LDS photocell / flame sensor
J8
Fase for system fan relay and ignition transformer
J9
Not used
J12
Connections for Temperature sensors, vane switch and gas pressure switch
J15
LDS photocell / flame sensor
F1
&
F2
Fuses 2x 5AT
U11
Status display
S1
Reset service button
S2
Micro switch heater no. Standard all on OFF
S3
Power supply thermostat standard S3 op 1
T2
not used
