AM Series Boilers and Water Heaters User Manual
CHAPTER 10
– MAINTENANCE
OMM-0100_E
•
GF-146
•
11/15/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 151 of 170
Legend for Electrical Scheme
6
– High limit supply temperature switch
7
– Supply temperature sensor
9
– Flue gas temperature sensor
10
– High limit Flue gas temperature fuse
11
– Control Board Fuse – F1 5x20 3A
13
– Ignition electrodes
14
– Spark generator
15
– Return temperature sensor
16
– Modulating PWM fan
17
– Back flue preventer switch (Flapper valve
switch)
19
– Water pressure sensor
20
– Gas valve
22
– Detection electrode
28
– Blocked flue pressure switch
29
– Condensate blocked drain switch
32
– Main electrical switch
34
– Display
35
– IF 885 board (optional on 199 & 250) Fuse–
F1 5x20 3A
47
– Water flow meter
48
– Motorized valve (optional)
51
– Connection board
Fuse
– F1 5X20 10A
Fuse
– F2 5X20 10A
Fuse
– F3 5X20 3A
Fuse
– F4 5X20 3A
Fuse
– F6 5X20 3A
RGPR
– CH pump relay
RGPS
– DHW pump relay
RPP1
– Local pump relayfor Burner 1 (MASTER)
RPP2
– Local pump relayfor Burner 2
RPP3
– Local pump relayfor Burner 3
RPP4
– Local pump relayfor Burner 4
