Vaillant VCW GB 242 EH Manuals

Manuals and User Guides for Vaillant VCW GB 242 EH. We have 1 Vaillant VCW GB 242 EH manual available for free PDF download: Instructions For Installation And Servicing

Vaillant VCW GB 242 EH Instructions For Installation And Servicing (77 pages)

Wall-mounted boilers COMBIcompact Series for central heating and instantaneous domestic hot water Fan-assisted Room Sealed

Brand: Vaillant | Category: Boiler | Size: 21.89 MB

Contents
2
Technical Data
3
Construction of Appliance
4
Function
5
General Requirements
6
Related Documents
6
Location
6
Gas Supply
6
Flue System
7
Terminal Position for Fan-Assisted Flue
7
Air Supply
8
Cupboard or Compartment Air Supply
8
Water Circulation System
8
Single Pipe System
9
Two-Pipe System
10
Circulating Pump
10
System By-Pass
10
Open Vented System
10
Sealed Systems
11
Pressure Relief Valve
11
Pressure Gauge
11
Expansion Vessel
11
DHW Expansion Vessel Accessory
12
Sizing of Additional Expansion Vessels
13
Dimensions
14
Installation of the Boiler
15
Installation Accessories
15
Delivery
16
Installation Sequence
17
Domestic Cold and Hot Water Connection
18
Connection of Heating System
19
Pressure Relief Valve and Overflow
19
Air/Flue Duct
19
Fitting the Appliance
20
Gas Connection
21
Connection of the Air/Flue Duct to the Appliance
21
Electrical Installation
24
List of Terminals
24
Connection of Vaillant Room Thermostat
25
Thermostatic Radiator Valves
25
Frost Protection
26
Operating Modes of the System Water Circulating Pump
27
Reignition Delay for the Heating System
28
Timed Automatic Set-Back Operation
29
ON/OFF Operation and Room Temperature Control
29
Schematic Appliance Circuit Diagram
30
Commissioning and Testing
31
Gas Installation
31
Central Heating System
31
Filling the Domestic Hot Water Circuit
31
Lighting the Boiler
32
Gas Soundness
32
Test of Flame Supervision Device
32
Gas Pressure
33
Main Burner Pressure
33
Flow Thermostat
33
Water Soundness and Final System Flush
33
Assembling
35
Door Hinges
35
Side Panels
35
Screen Plate
35
Upper Appliance Door
36
Lower Appliance Door
36
User Operating Instructions Labels
36
Servicing of Boiler
37
Boiler Inspection
37
Turning off the Boiler
37
Removing Outer Case
38
Removing Inner Case
38
Cleaning of Burner
39
Cleaning of Main Heat Exchanger
39
Check of C.H. Expansion Vessel
40
Recommissioning the Appliance
40
Replacement of Parts
41
Change of Electrodes
41
Change of NTC Resistor
41
Change of Automatic Air Vent
42
Change of Diverter Valve or Parts
42
Electrical Isolation
42
Change of Diverter Valve Micro-Switches
42
Removal of Complete Diverter Valve
43
Change of Diverter Valve Stuffing Box
43
Change of Diaphragm
43
Change of Internal Parts
44
Reassembling
44
Gas Section
45
Change of Operator
45
Change of Gas Section
45
Change of Differential Valve
46
Change of Gas Section Stuffing Box
46
Change of Pump
47
Opening Control Box
48
Change of Fan Control Circuit Board
48
Change of Electronic Thermostat Circuit Board
48
Change of Flame Supervision Circuit Board
49
Change of Main Switch Circuit Board
49
Change of Diaphragm Pump
49
Change of Ignition Transformer
50
Change of Safety Isolating Transformer
50
Change of Overheat Cut-Off Device
51
Change of Fan
52
Change of Air Pressure Switch
53
Removal of Servo Control Valve Assembly
53
Change of Servo Control Valve Assembly
54
Change of D.H.W. Microswitch
54
Cleaning of Water Section
54
Adjustment of Servo Control Valve
55
Change of Expansion Vessel
55
Airflue Duct Assembly Arranged to the Rear and Side
56
External Replacement Vessel
56
Change of Thermometer
56
Change of Pressure Gauge
57
Change of System Bypass
57
Change of Domestic Hot Water Overheat Thermostat
57
Change of Central Heating Overheat Thermostat
58
Change of Domestic Hot Water Pressure Relief Valve
58
Change of Central Heating Pressure Relief Valve
58
Change of D.H.W. Heat Exchanger
59
Change of Main Heat Exchanger
60
Change of Combustion Chamber Duct and Insulation
60
Releasing C.H. System Pressure
61
Draining Boiler C.H. Circuit
61
Fault Finding
62
Check Electrical Supply
62
Check Main Switch and Overheat Cut-Off Device
63
Check Operation of Pump
64
Check Flue Fan System
65
Check Operation of Diverter Valve
66
Check Ignition System and Gas Section
67
Check Burner Modulation
68
Check D.H.W. Operation
69
Electrical Diagrams
70
Functional Flow Diagram
70
Wiring Diagram
71
Short Part List
72

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