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Vision 30C
VOKERA Vision 30C User Manual
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Users Instructions
Installation &
Servicing
Instructions
THESE INSTRUCTIONS
TO BE RET
AINED
BY USER
V
okèra is a licensed member of the Benchmark scheme
which aims to improve the standards of installation and
commissioning of domestic hot water systems in the UK.
V
ision C
High efciency combi boiler
2
Table of Contents
Default Chapter
2
Table of Contents
2
Users Instructions
3
Things You Should Know Page
3
Gas Appliances
3
Electrical Supply
3
Guarantee Registration Card
3
Appliance Log Book (UK Only)
3
How Does It Work
3
Dimensions
3
Clearances Required
3
Frost Protection System
3
Pressure Gauge
4
Getting Started Page
8
Before Switching on
8
Appliance Controls
8
Lighting the Boiler
8
Adjusting the Heating Temperature
8
Adjusting the Hot Water Temperature
8
Explanation of Features
8
Automatic Temperature Control
8
How to
8
How to Top-Up the System Pressure
8
What if
9
What if I Suspect a Gas Leak
9
What if I Have Frequently Top-Up the System
9
What if the Appliance Is Due Its Annual Service
9
What if I Need to Call an Engineer
9
Installation and Servicing Instructions
10
Design Principles & Operating Sequence
11
Principle Components
11
Mode of Operation (at Rest)
11
Mode of Operation (Heating)
11
Mode of Operation (Hot Water)
11
Safety Devices
11
Technical Data
12
Central Heating
12
Domestic Hot Water
12
Gas Pressures
12
Expansion Vessel
12
Dimensions
12
Clearances
12
Connections
12
Electrical
12
Flue Details (Concentric 60-100)
12
A Flue Details (Concentric 80-125)
12
Efficiency
13
Emissions
13
Pump Duty
13
General Requirements (UK)
14
Related Documents
14
Location of Appliance
14
Gas Supply
14
Flue System
14
Air Supply
14
Water Circulation
14
General Requirements (EIRE)
15
Electrical Supply
15
Mounting on a Combustible Surface
15
Timber Framed Buildings
15
Inhibitors
15
Showers
15
Related Documents
15
Location of Appliance
15
Gas Supply
15
Flue System
15
Air Supply
16
Water Circulation
16
Electrical Supply
16
Mounting on a Combustible Surface
16
Timber Framed Buildings
16
10 Inhibitors
16
11 Showers
16
12 Declaration of Conformity
16
Delivery
17
Contents
17
Unpacking
17
Preparation for Mounting the Appliance
17
Fitting the Flue
17
Connecting the Gas & Water
21
Electrical Connections
21
Gas Supply Installation
22
The Heating System
22
Initial Filling of the System
22
Initial Flushing of the System
22
Pre-Operation Checks
22
Initial Lighting
22
Checking Gas Pressure & Combustion Analysis
22
Final Flushing of the Heating System
22
Setting the Boiler Operating Temperature
22
Setting the System Design Pressure
22
Regulating the Central Heating System
23
Final Checks
23
Instructing the User
23
General
23
Routine Annual Servicing
23
Replacement of Components
23
Component Removal Procedure
23
Pump Assembly
24
Safety Valve
24
Lower Automatic Air Release Valves
24
Water Pressure Switch
24
Flow Thermistor
24
Return Thermistor
24
Printed Circuit Board
24
Gas Valve
25
Electrodes
25
Flue Fan & Mixer
25
Burner
25
Main Heat Exchanger
26
Automatic By-Pass & DHW Non-Return Valve
26
Expansion Vessel Removal
26
Condense Trap Removal
26
Flue Collector Removal
27
Checking Appliance Operation
28
Appliance Modes of Operation
28
Checking the CO
28
Adjusting the Valve
28
Combustion Analysis Test
29
Checking the Expansion Vessel
29
External Faults
29
Electrical Checks
29
Fault Finding
30
Component Values & Characteristics
30
Adjustments
31
External Wiring
33
Other Devices
33
Related Documents
35
Technical Data
35
Converting the Appliance Gas Type
35
Gas Supply
35
Gas Supply Installation
35
Checking the CO 2 and Adjusting the Gas Valve
35
Benchmark
37
Gas Boiler System Commissioning Checklist
37
Service Record
38
4
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VOKERA Vision 30C Specifications
General
Boiler Type
Combi
Mounting
Wall Mounted
ERP Rating
A
DHW Output
30 kW
Max Working Pressure
3 bar
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