Boiler control panel and wiring
Control panel CKCR2 provides 2-stage burner control for high/low operation whilst panel CKCR1 provides 1-stage
burner control for on/off, modulating or LFS operation. Thermostat TR is a 1-stage item with CKCR1 and a dual
thermostat (1 and 2 stage) with CKCR2.
0/I
L1
L2
Fuse STB
L3 L4
TR
Thermometer
EDS801/3 page6
Fig 6 Boiler control panel
¬
1
2
3
4 5
6
7
8
9
10 11 12
L1
T1
à
à
EC1 (removable link)
T2
T8
T6
STB
TR
TR2
Fuse
L1
L2 L3 L4
L N N
L1
N
T1T2
S3
B4
E
T8T7
B5
T6
CKCR2 only
CKCR2 only
Burner loom stage 1
Burner loom stage 2
Fig 7 Boiler control panel wiring
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