VOKERA RAIN 24 Installation And Servicing Instructions - page 2
Contents
Design principles and operating sequence
Page
1.1
Principle components
2
1.2
Mode of operation
2
1.3
Safety devices
2
Technical data
Page
2.1
Central heating
3
2.2
Gas pressure
3
2.3
Expansion vessel
3
2.4
Dimensions
3
2.5
Clearances
3
2.6
Connections
3
2.7
Electrical
3
2.8
Flue details
3
2.9
Emissions
3
2.10
Pump duty
4
General requirements
Page
3A.1
Related documents
5
3A.2
Location of appliance
5
3A.3
Gas supply
5
3A.4
Flue system
5
3A.5
Air supply
5
3A.6
Water circulation
5
3A.6.1 Pipework
5
3A.6.2 Automatic by-pass
5
3A.6.3 Drain cocks
5
3A.6.4 Air release points
5
3A.6.5 Expansion vessel
5
3A.6.6 Filling point
5
3A.6.7 Low pressure sealed system
6
3A.6.8 Frequent filling
6
3A.7
Electrical supply
6
3A.8
Mounting on a combustible surface
6
3A.9
Timber framed building
6
3A.10
Inhibitors
6
3A.11
Declaration of conformity
6
Installation
Page
4.1
Delivery
7
4.1.2
RAIN application
7
4.1.3
RAIN bi application
7
4.2
Contents (appliance carton)
7
4.3.1
Unpacking
7
4.3.2
Preparation for mounting
the appliance (external application)
7
4.3.3
Important
7
4.4.1
External applications using the enclosure
7
4.4.2
External applications without the enclosure
8
4.5
Fitting the flue
8
4.5.1
Concentric horizontal flue
8
4.5.2
Concentric vertical flue
10
4.5.3
Vokera twin flue application
10
4.6
Connecting the gas and water
10
4.6.1
Gas
10
4.6.2
Flow and return
10
4.6.3
Safety valve
10
4.7
Electrical connections
10
4.8.1
Electrical connection
10
4.8.2
Connecting the mains (230V) input
10
4.7.1
Internal access
11
Commissioning
Page
5.1
Gas supply installation
11
5.2
The heating system
11
5.3
Initial filling of the system
11
5.4
Initial flushing
11
5.5
Pre-operation checks
11
5.6
Initial lighting
11
5.7
Checking the burner pressure
11
5.8
Final flushing of the heating system
12
5.8.1
Inhibtors
12
5.9
Setting the boiler operating temperature
12
5.10
Setting the system design pressure
12
5.11
Regulating the central heating system
12
5.12
Final checks
12
5.13
Instructing the user
12
Servicing instructions
Page
6.1
General
13
6.2
Routine annual servicing
13
6.3
Replacement of components
13
6.4
Component removal procedure
13
Checks, adjustments and fault finding
page
7.1
Checking appliance operation
14
7.2
Appliance mode of operation
14
7.2.1
Selector switch in the OFF position
14
7.2.2
Selector switch in the ON position
14
7.2.3
Appliance functions
14
7.2.4
Heating mode
14
7.2.5
Heating parameters
15
7.3
Checking & adjusting burner pressure
15
7.3.1
Setting the maximum burner pressure
15
7.3.2
Setting the minimum burner pressure
15
7.4
Combustion analysis test
15
7.5
Checking the expansion vessel
16
7.6
External faults
16
7.6.1
Installation faults
16
7.7
Electrical checks
16
7.7.1
Earth continuity test
16
7.7.2
Short circuit check
16
7.7.3
Polarity check
16
7.7.4
Reversed polarity or supply fault
16
7.7.5
Resistance to earth check
17
7.8
Fault finding
17
7.8.1
Replacing the main PCB
17
7.9
Fault codes
17
Wiring diagrams
Page
8.1
External wiring
18
8.2
Typical control applications
18
8.3
Room thermostat
18
8.4
Other controls
18
Functional diagram
19
Exploded diagrams
Page
Table 1-5
21-24
L.P.G. instructions
Page
10.1
Technical data
25
10.2
Converting the appliance gas supply
25
10.3
Gas supply installation
25
10.4
Checking & adjusting burner pressure
25
10.4.1
Setting the maximum burner pressure
25
10.4.2
Setting the minimum burner pressure
25