Dunkirk DWB Series User Manual
Page 37
1k
81
32
95
278
1 4
120V
60Hz
138
5 6 7 8
3 4
1 2
16
44
N
L
138
370
95
278
T
T
297
47
114
GND
+15V
OUT
155
72
X1
X2
AUX
X4
X4
X11
X7
X5
X7
X6
X9
L
L
N
N
1
1
DBM34
10
kOhm
1,8
kOhm
M
138 - Optional Outdoor Sensor
155 - Optional Indirect Tank Sensor
Key
16 Modulating fan
32 Heating circulating pump
42 DHW temperature sensor (see kit)
44 Gas valve
47 Modulation Regulator (24V)
72 Room thermostat (fi eld sourced)
81 Ignition/detection electrode
114 Water pressure switch
138 External probe (not fi tted)
155 Hot water tank temperature probe (fi eld sourced)
278 Double sensor (Safety + Heating)
297 Air pressure transducer
370 Low Water Cutoff (LWCO) - (fi eld sourced)
Important: Before connecting the room thermostat, remove the jumper on terminal block.
37
WIRING DIAGRAM
370 - Field Source LWCO