11
Chapter 2. Installation, Wiring
Terminal numbers, front panel item names
z Terminal No.
Front connector terminals
No. Function No. Function
25 Flame voltage output (+) 31 NC
26 Flame voltage output (-) 32 NC
27 NC 33 NC
28 NC 34 NC
29 NC 35 NC
30 NC - -
BC-R05A100 sub-base terminals
No. Function No. Function
1 Line voltage temp. controller 13 NC
2 AC power supply (L1) 14 Flame detector (F)
3 AC power supply (L2 (N)) 15 Flame detector (G)
4 NC 16 Input common 1
5 NC 17 Input common 2
6 Ignition transformer output 18 NC
7 Pilot valve output 19 NC
8 Main valve output 20 External controller for low voltage (use
non-voltage contacts betw. Nos. 17 & 20)
9 NC 21 NC
10 Alarm output COM 22 NC
11 Alarm output NO 23 NC
12 Alarm output NC 24 Contact reset
BC-R05A100 sub-base (sold separately)
Terminal board
RESET switch
DISP switch
Display
Loader jack *
* Not used
(for inspection and adjustment before shipment)
Front connector cover
(connector is behind cover)
Front
DIN rail clamp
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