CONTENTS
TR05A140.B1107
1
USER INSTRUCTIONS
3
1.1
Boiler controls
3
1.1.1
Control panel layout
3
1.1.2
Operating the appliance
3
1.2
Topping up the system (Error Code H20)
4
1.3
If you smell gas
4
2
GENERAL INFORMATION
5
2.1
General warnings
5
2.2
Information
5
2.3
Product conformity
7
3
TECHNICAL CHARACTERISTICS
8
3.1
Technical data
8
3.2
Dimensions
9
3.3
Internal components
10
3.4
Function diagram
11
3.5
Circulation pump performance curves
12
3.6
Control panel and display
13
3.6.1
Layout
13
3.6.2
Boiler operation
13
3.6.3
Function codes
14
4
INSTALLATION
15
4.1
Reference standards
15
4.2
Unpacking
16
4.3
Installing the boiler
17
4.3.1
Compartment ventilation
17
4.4
Water connections
18
4.4.1
Central heating circuit
19
4.4.2
Filling the central heating system
19
4.5
Condensate drain
20
4.6
Gas connection
21
4.7
Electrical connections
22
4.7.1
General warnings
22
4.7.2
Power supply
23
4.8
Flue connections
24
4.8.1
Flue position
25
4.8.2
Horizontal coaxial balanced flue – Ø 60/100 (Kit K)
26
4.8.3
Horizontal coaxial balanced flue – Ø 80/125
27
4.8.4
Vertical coaxial balanced flue – Ø 60/100 (Kit V)
28
4.8.5
Vertical coaxial balanced flue – Ø 80/125
29
4.8.6
Twin pipe flue system – Ø 80/80 (Kit H)
30
5
COMMISSIONING
31
5.1
General warnings
31
5.2
Filling the system
32
5.3
Flushing the system
33
5.4
Filling the condensate trap
33
5.5
Starting the boiler
34
5.6
Control parameters
35
Summary of Contents for GS25A
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