17
Figure 3-3 Main components for models 199
3 - MAIN COMPONENTS
1 - Levelling feet
2 - Condensate hose that coming from heater’s fl ue exhaust
3 - Condensate neutralizer box
4 - Heat exchanger
5 - Condensate discharge hose
6 - Gas inlet pipe
7 - Supply pipe
9 - Air inlet connection
10 - Electrical cable passages
11 - Air fi lter
5
1041 6 12
4
7
1
24
25
11
2
3
9 14
20
40
13 15
16
17
21
19
020010.01.027
12 - Flue exhaust connection
13 - Modbus, 0-10Vcc, and cascade communication board
(Optional)
14 - Electrical terminals (Junction box)
15 - Control panel cover
16 - Display
17 - Control keys
19 - Front cover
20 - “Burner 1” (Master) power control board
21 - Bottom front cover