Supplied By www.heating spares.co Tel. 0161 620 6677
Contents
Design principles and operating sequence
Page
1.1
Principle components
2
1.2
Mode of operation (at reset)
2
1.3
Mode of operation (Heating)
2
1.4
Mode of operation (DHW)
2
1.5
Safety devices
2
1.6
Optional accessories
2
Technical data
Page
2.1
Central heating
3
2.2
Domestic hot water
3
2.3
Gas pressure
3
2.4
Expansion vessel
3
2.5
Dimensions
3
2.6
Clearances
3
2.7
Connections
3
2.8
Electrical
3
2.9
Flue details (concentric)
3
2.9A
Flue details (twin pipes)
3
2.10
Efficiency
3
2.11
Pump duty
4
2.12
Emissions
4
General requirements (UK)
Page
3.1
Related documents
5
3.2
Location of appliance
5
3.3
Gas supply
5
3.4
Flue system
5
3.5
Air supply
5
3.6
Water circulation
6
3.6.1
Pipework
6
3.6.2
Automatic by-pass
6
3.6.3
Drain cocks
6
3.6.4
Air release points
6
3.6.5
Expansion vessel
6
3.6.6
Filling point
6
3.6.7
Low pressure sealed system
6
3.6.8
Frequent filling
6
3.7
Electrical supply
6
3.8
Showers
6
3.9
Mounting on a combustible surface
6
3.10
Timber framed building
7
3.11
Inhibitors
7
General requirements (EIRE)
Page
3.A1
Related documents
7
3.A2
Location of appliance
7
3.A3
Gas supply
7
3.A4
Flue system
7
3.A5
Air supply
7
3.A6
Water circulation
8
3.A6.1
Pipework
8
3.A6.2
Automatic by-pass
8
3.A6.3
Drain cocks
8
3.A6.4
Air release points
8
3.A6.5
Expansion vessel
8
3.A6.6
Filling point
8
3.A6.7
Low pressure sealed system
8
3.A6.8
Frequent filling
8
3.A7
Electrical supply
8
3.A8
Showers
8
3.A9
Mounting on a combustible surface
8
3.A10
Timber framed building
8
3.A11
Inhibitors
8
3.A12
Declaration of conformity
8
Installation
Page
4.1
Delivery
9
4.2
Contents
9
4.3
Unpacking
9
4.4
Preparation for mounting the appliance
9
4.5
Fitting the flue
9
4.5.1
Concentric horizontal flue
9
4.5.2
Concentric vertical flue
11
4.5.3
Twin flue system
12
4.6
Connecting the gas and water
14
4.6.1
Gas
14
4.6.2
Flow and return
14
4.6.3
Cold water inlet
14
4.6.4
Hot water outlet
14
4.6.5
Safety valve
14
4.6.6
Condense pipe
15
4.7
Electrical connections
15
4.7.1
Casing removal
15
4.7.2
Appliance terminal block
15
4.7.3
Connecting the mains (230V) input
15
4.7.4
Connecting the Vokera time clock
16
Commissioning
Page
5.1
Gas supply installation
17
5.2
The heating system
17
5.3
Initial filling of the system
17
5.4
Initial flushing
17
5.5
Filling the hot water system
17
5.6
Pre-operation checks
17
5.7
Initial lighting
17
5.7.1
Checking burner pressures
17
5.8
Final flushing of the heating system
18
5.8.1
Inhibtors
18
5.9
Setting the boiler operating temperature
18
5.9.1
Setting the domestic hot water temperature
18
5.10
Setting the system design pressure
18
5.11
Regulating the hot water
18
5.11.1
Changing the flow restrictor
18
5.11.2
Regulating the central heating system
18
5.12
Final checks
18
5.13
Instructing the user
19
Servicing instructions
Page
6.1
General
19
6.2
Routine annual servicing
19
6.3
Replacement of components
19
6.4
Component removal procedure
19
6.5
Pump assembly
19
6.6
Safety valve
20
6.7
Automatic air release valve
20
6.8
Water pressure switch
20
6.9
Pressure gauge
20
6.10
Primary thermistors
20
6.11
High limit thermostat
21
6.12
Printed circuit board
21
6.13
Gas valve
21
6.14
Integral time switch
22
6.15
Electrode, burner thermostat, burner & injectors
22
6.16
Flue fan
23
6.17
Main heat exchanger
23
6.18
Air pressure switch
24
6.19
Flow restrictor
24
6.20
DHW flow switch
24
6.21
DHW heat exchanger
24
6.22
Valve actuator
24
6.23
Divertor valve assembly
24
6.24
Secondary thermistor
25
6.25
Automatic by-pass
25
6.26
DHW non-return valve
25
6.27
Expansion vessel
25
6.27.1
Expansion vessel removal
25
6.27.2
Expansion vessel removal
25
6.28
Latent heat collector
26
6.28A
Dismantling the latent heat collector
26
6.29
Condense trap removal
26
Checks, adjustments and fault finding
page
7.1
Checking appliance operation
27
7.2
Appliance mode of operation
27
7.2.1
Selector switch in the off position
27
7.2.2
Selector switch in the hot water only position
27
7.2.3
Selector switch in the heating & hot water position
27
7.2.4
Appliance functions
27
7.2.5
Heating mode
27
7.2.6
DHW mode
28
7.3
Checking and adjusting burner pressure
28
7.3.1
Setting the maximum burner pressure
28
7.3.2
Setting the minimum burner pressure
28
7.4
Combustion analysis test
28
7.5
Checking the expansion vessel
29
7.6
External faults
29
7.6.1
Installation faults
29
7.7
Electrical checks
29
7.7.1
Earth continuity test
29
7.7.2
Short circuit test
29
7.7.3
Polarity check
29
7.7.4
Reversed polarity or supply fault
29
7.7.5
Resistance to earth check
30
7.8
Fault finding
30
7.9
Fault codes
31-38
Wiring diagrams
Page
8.1
External wiring
39
8.2
Typical control applications
39
8.3
Vokera time clock
39
8.4
Vokera remote control
39
8.5
Vokera room thermostat
39
8.6
Other controls
39
Exploded diagrams
Page
Table 1 - 5
43 - 48
L.P.G. instructions
Page
10.1
Related documents
49
10.2
Technical data
49
10.3
Converting the appliance gas type
49
10.4
Gas supply
49
10.5
Gas supply installation
49
10.6
Checking and adjusting burner pressure
49
10.6.1
Setting the maximum burner pressure
49
10.6.2
Setting the minimum burner pressure
49