Vaillant VCW 25 Manuals

Manuals and User Guides for Vaillant VCW 25. We have 1 Vaillant VCW 25 manual available for free PDF download: Instructions For Installation And Servicing

Vaillant VCW 25 Instructions For Installation And Servicing (63 pages)

Combined appliances for heating and domestic hot water

Brand: Vaillant | Category: Water Heater | Size: 5.2 MB

Contents
2
Introduction
2
Construction of Appliance
2
General Requirements
4
Related Document
4
Location
4
Vcw
4
Meters
5
Flue System
5
Installation Pipes
5
Air Supply
6
Room or Internal Space Air Supply
6
Cupboard or Compartment Air Supply
6
Effect of an Extract Fan
6
Installation of Boiler
7
Electrical Supply
7
General
7
Fluing
8
Connection
8
All Dimensions
8
Installation Aids
10
Open Fluid Combi Boiler
10
Room Sealed Combi Boiler
10
Domestic Cold and Hot Water Connection
10
Connection of Heating System
11
Pressure Relief Valve and Overflow
11
Fitting the Appliance
11
Open Fluid Appliance
12
Balanced Fluid Appliance
12
Gas Connection
13
Flue Connection
13
Electrical Connections
13
Connection of the Mains Cable
14
Connection of Vaillant Room Thermostat
14
Pump Control
14
Thermostatic Radiator Valves
15
VCW-Terminal
15
Overview
18
Water Circulating System
20
Single Pipe System
20
Two-Pipe System
20
Controls
21
Isolating Valves
21
Circulating Pump
21
System By-Pass
21
Sealed Systems
22
Pressure Relief Valve
22
Pressure Gauge
22
Expansion Vessel
22
Commissioning and Testing
23
Electrical Connection
23
Gas Installation
23
Water Circulation System
23
Nominal Heating Input
24
Flue
24
Flow Thermostat
24
User's Instructions
24
Assembling
25
Lint Arrestor
25
Side Panels
25
Screen Plate
26
Front Panel
26
Door
26
Changing Door Attachment
27
Stickers
27
Servicing of Combi Boiler
27
Turning off the Combi Boiler
27
Removing Outer Case
28
Draining the Appliance
28
Cleaning of Burner and Lint Arrestor
28
Cleaning of Burner
28
Open Flued Appliance
29
Cleaning of Lint Arrestor
30
Cleaning of Main Heat Exchanger
30
Balanced Flued Appliances
30
Descaling of Domestic Heat Exchanger
31
Cleaning of Water Section
31
Maintenance of Differential Valve
32
Final Tests
33
Final Test Heating System
33
Change of Pilot Jet
33
Change of Thermocouple
34
Change of Spark Electrode
34
Change of NTC Probe
34
Change of Automatic Air Vent
34
Change of Flow Switch of Parts
35
Electrical Isolation
35
Change of Flow Switch Micro Swichers
35
Removal of Complete Flow Switch
35
Change of Flow Switch Stuffing Box
36
Change of Thermostatic Element
36
Reassembling
36
Change of Piezo Igniter
37
Change of DC Solenoid
37
Change of DC Solenoid Micro Switch
37
Change of Pump
38
Change of Complete Pump
38
Open Flued Boiler
38
Balanced Flued Boiler
38
Change of Pump Head Only
39
Change of Gas Section
39
Balanced Flued Appliance
39
Change of Gas Governor
39
Change of Pilot Gas Filter
40
Change of Automatic Valve Stuffing Box
40
Change of Switch Box
40
Change of FFD Valve Stuffing Box
41
Change of FFD Push Buttons
41
Change of Pilot Valve
41
Change of Thermo-Magnet
42
To Open the Control Box
42
Change of Main Switch Board
42
Change of Micro-Switches of Water Section
43
Change of Overheat Cut-Off Device
43
Change of Electronic P.C.b.
43
Change of Expansion Vessel
44
Domestic Water Side
44
Heating System Open Fluid Appliances
44
Heating System Balanced Flued Appliance
44
Change of Thermometer
45
Change of Manometer
45
Change of System Bypass
45
Fault Finding
46
Check of Flame Failure Device and Thermocouple
46
Check Electricity Supply
48
Check Operation of Heating System
50
Check Electronic and Hydraulic System
52
Check Switch for Domestic Hot Water
54
Check Operation of Domestic Hot Water System
56
Short Parts List
61
Technical Data
62

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