elco RENDAMAX 30, Operating Instructions Manual

Page: 6 / 28

Product description
Circuit diagram
Compact gas fitting
Circuit diagram
The circuit diagram is integrated in the
burner with all the above operating
elements.
The system electronics KM628 offers:
-
Management for modulating boiler
regulator
-
Hot water preparation
Compact gas fitting
The compact gas fitting works as a gas
safety close valve and as regulator.
The regulator functions as a pneumatic
gas / air difference pressure regulator.
On the gas side, it controls the gas
pressure P
O
in the function of the
combustion air pressure P
L
.
If no air pressure is built up (P
L
= 0),
the gas valve remains closed. The gas/
air pressure ratio and thus also the gas
air volume ratio can be set and then/
remain almost constant over the set
load range.
Technical data
Safety close valve 2, class B/C
Mains power
Type
65-100 AC 24 V
Type 120 AC 230 V
Power consumption
Type
65-100 0,42 A
Type 120 0,09 A
Gas fitting incl. gas filter
1 Operating type
i
Standby
q
Automatic operation
F
Summer operation
j
Chimney sweep operation
2 Operating type selector
3 Fault display
E
4 Lead temperature
5 Fault code (blinking)
6 Heating circuit status
C
Night operation
B
Day operation
(Blinking) Burner on
7 Service status
j
I Service status minimum burner
output
j
II Service status maximum burner
output
5 6 7 4 3 2
1
6