Table of Contents
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Users instructions
Sections
1
1.1
1.2
1.3
Operating safety checks to protect
your appliance (checking the system
pressure)
1.4
1.5
1.6
Boiler value
1.7
Time
1.8
1.9
Diagnostic
2
2.1
2.2
Introduction
2.3
Description of control system and
sequence of operation
2.4
Domestic hot water mode
2.5
Central heating mode
2.6
General function
2.7
2.8
Safety device
2.9
3
Technical data WH 80(T) natural gas
3.1
Technical data WH 80(T) LPG
3.2
Technical data WH 90(T) natural gas
3.3
Technical data WH 90(T) LPG
4
4.1
Safety
Gas safety (Installation and use)
4.2
General information
4.3
4.4
Clearances around the appliance
4.5
Important notice
4.6
Gas supply
4.7
4.8
Air supply
4.9
Water circulation (central heating)
4.12 Boiler interlock control
4.13 Draining tap
4.15 Mains water feed: central heating
4.18 Installation to an existing central
heating system
4.19 Water treatment
4.21 Domestic water
4.22 Electrical supply
4
Page
Sections
6
5
6
5.1
6
5.2
6
5.3
5.4
5.5
7
5.6
8
5.7
8
8
5.8
9
9
5.9
10
5.11 In-line flue bend and flue extension
11
12
12
5.14 Twin flue instructions
12
12
12
13
13
5.16 Exhaust / suction system with two
13
13
14
5.17 Exhaust / suction system with two
15
16
17
5.18 Installation instructions for 80/125
18
5.19 Assemble boiler
18
5.21 Gas connection
18
5.22 Central heating connection
19
5.23 Domestic hot water connection
19
5.24 Position of water/gas connections
19
19
5.26 Condensate drain connection
20
20
20
5.28 Electrical connections
21
5.29 Outdoor sensor
22
22
6
22
6.1
23
6.2
23
6.3
23
6.4
24
24
6.5
6.6
25
6.8
25
6.9
25
25
Installation
Warning
Delivery
Unpacking of boiler
Positioning of the boiler
outlet
Installing the appliance for side flue
outlet
Completing horizontal flue installation
components
pipe
concentric pipes for flat or sloping
roofs.
Extensions with two separate pipes
separate rated 80 dia. pipes
exhaust on flat or sloping roof, suction
from vertical wall
separate pipes through a single
vertical wall
concentric flue system
gas types
Gas supply installation
Electrical installation
Initial filling of the system
Setting the heating system
design pressure
Filling the hot water system
Lighting the boiler
Combustion check
Page
25
25
25
25
25
26
27
28
28
31
31
31
32
34
34
35
35
35
36
37
37
37
37
37
37
38
38
39
39
39
40
40
40
40
40
40
40
41
41
42
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