RBI Infinite Energy2 IW1000, Installation And Operation Instructions Manual

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4 - FUNCTION OVERVIEW
Figure 4-4 - Hydronic functional schematic for model 1000
Key to Figures 4-4:
1 - Air inlet
2 - Flue exhaust
3 - Automatic air vent
4 - Sealing chamber
6 - High limit supply temperature switch
7 - Supply temperature sensor
8 - Water pressure sensor
9 - Flue gas temperature sensor
10 - High limit flue gas temperature fuse
12 - Premix burner
13 - Ignition electrodes
14 - Ignitor
15 - Return temperature sensor
16 - Modulating PWM fan
17 - Back flue preventer
20 - Gas valve
22 - Detection electrode
23 - Supply and return headers
24 - CRV Stainless steel heat exchanger
25 - Water supply
26 - Water return
27 - Gas inlet
28 - Blocked flue pressure switch
29 - Condensing blocked drain switch
30 - Condensing drain
31 - Condensate Siphon
33 - Header temperature sensor
36 - Condensate neutralizer box
37 - ASME P-T relief valve
47 - Flow meter
48 - Motorized valve (optional)
50 - Drain valve
51 - Pressure/temperature gauge
52 - Primary heat exchanger temperature fuse