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220 M Series
wessex 220 M Series Manuals
Manuals and User Guides for wessex 220 M Series. We have
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wessex 220 M Series manual available for free PDF download: Installation, Comissioning And Servicing Instructions
wessex 220 M Series Installation, Comissioning And Servicing Instructions (40 pages)
High-Efficency, Fully Modulating, Pre-Mix Gas Fired Boilers
Brand:
wessex
| Category:
Boiler
| Size: 1 MB
Table of Contents
Table of Contents
4
Introduction
7
Technical Data
10
Feed Water Quality
11
Adequate Water Flow
11
General Requirements
11
Related Documents
11
Boiler Gas System Leak Check
12
Location
12
Gas Supply
12
Meters
12
Service Pipes
12
Time Clock Control
12
Design Waste Gas Volume and Temperature
13
Materials
13
Suction
14
Disconnection
14
Flue Discharge
14
Surface Temperatures
14
Flue System Location
14
Condensate Discharge
14
Flue System
13
Boiler House Control Valve
12
Gas Supply Pipes
12
Boosted Supplies
12
Minimum System Water Pressure
12
Air Supply
14
Flue System General Requirements
13
Air Supply by Natural Ventilation
14
Location..........................................................................................................................................6
14
Air Supply by Mechanical Ventilation
15
Altitude Gauge (Water Pressure Gauge)
15
Thermometer
15
Drain Valves
16
Circulating Pump
16
Open Vent and Cold Feed Pipe
15
Pressure Relief Valve (Safety Valve)
15
Water Circulation System
15
General
15
Minimum Water Flow Rates
16
Waterside Pressure Drop
16
Control Schemes
16
Unvented Systems
16
Electrical Supply
17
Modular Boiler Control Schemes
17
Indication Signals and Volt Free Contacts
18
Sequencing Interface Module (Optional)
18
Site Wiring
18
Boiler Assembly and Installation
22
Commissioning and Testing
22
Connection of Boilers to the Flue System
22
Electrical Installation
22
Gas Installation
22
General
22
Water Connections
22
Commissioning the Boiler
23
Water Circulation System
23
Fault Finding
26
Fault Finding Procedures
26
Possible Causes of Boiler Lockout
26
Safety Features Summary
26
Servicing
30
Replacement of Failed Components
32
Recommended Spares
35
Appendix 'A' - Information Relating to Propane Firing
36
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