Installation Instructions
SSB 6720818454 (2016/02) US
Spare parts | 61
Item (→ Fig. 84) Description
SSB255
SSB399
SSB512
Order number
1 Enclosure user interface ■ ■ ■ 7-738-005-037
2 Circuit Board user interface ■ ■ ■ 7-738-005-038
3 Keypad ■ ■ ■ 7-738-005-039
4 Service plug cover ■ ■ ■ 7-738-005-040
5 On Off power switch ■ ■ ■ 7-738-005-041
6 Display cable ■ ■ ■ 7-738-005-042
7 Conduit for display cable ■ ■ ■ 7-738-005-043
8 Terminal block low voltage ■ ■ ■ 7-738-005-044
9 Terminal block line voltage ■ ■ ■ 7-738-005-045
10 Control Board ■ ■ ■ 7-738-005-046
11 Transformer 24V 0.6 amps ■ ■ ■ 7-738-005-047
12 LWCO circuit board ■ ■ ■ 7-738-005-048
13 Fuse carrier ■ ■ ■ 7-738-005-049
14 Red LED light ■ ■ ■ 7-738-005-050
15 Fuse 6 A ■ ■ ■ 7-738-005-051
16 Fuse 0.125 A ■ ■ ■ 7-738-005-052
17 Test push button ■ ■ ■ 7-738-005-053
18 Manual Reset push button ■ ■ ■ 7-738-005-054
19 Wiring harness SSB ■ 7-738-005-055
19 Wiring harness SSB ■ 7-738-005-108
19 Wiring harness SSB ■ 7-738-005-056
20 Outdoor Sensor 10K ohm ■ ■ ■ 7-738-005-057
21 Universal Sensor for LLH, or DHW 10K ohm ■ ■ ■ 7-738-005-058
23 LPG gas conversion kit ■ 7-738-005-061
23 LPG gas conversion kit ■ 7-738-005-062
23 LPG gas conversion kit ■ 7-738-005-063
24 Fuse 3.15 A ■ ■ ■ 7-738-005-059
25 Fuse holder ■ ■ ■ 7-738-005-060










