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Installation and Service Manual Upsilon-Series
5
description components gure 1.a
1 heat exchanger 1 (All UB-types)
2 heat exchanger 2 (UB 110 and UB 140)
3 ignition unit
4 fan unit
5 damper
6 gas valve
7 automatic air vent
8 main switch 230V
9 boiler contol unit
10 control unit MMI
11 connection terminal
12 connection terminal cascade bus communication
13 syphon
14 circulation pump
15 gas isolation valve (in optional boiler connections set)
16 service valves ow/return (in optional boiler connections set)
17 ll and drain valve (in optional boiler connections set)
18 safety valve (in optional boiler connections set)
19 ue connection
20 air supply
21 collective ue pipe
22 information plate
T1 ow sensor
T1a secondary ow sensor (only HEX4)
T2 return sensor
P1 water pressure sensor
G gas pipe
A ow pipe CH
R return pipe CH
C condensate drain pipe
1
2
3
4
5
6
7
8
10
9
11
12
13
14
3
4
5
6
7
G C A
R
15 16
18
17
22
21
20 19
T1a
T2
P1
T1