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Installation and Service Manual Upsilon-Series
6
description components gure 1.b
1 Air supply (for parallel ue connection)
2 Flue/Air supply (concentric)
3 Gas isolation valve
4 Service valves ow and return
5 Non-return valve
6 Flow/return header
7 Gas line
8 Low velocity header
9 Safety valve
10 Fill and drain valve
11 Automatic air vent low velocity header
12 Pocket for temperature sensor T10
13 Cascade manager
14 Frame
1 2
3 4 5 6 78 10 9
11
12
13
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