HAMWORTHY HEATING LTD. PUREWELL AUTOMATIC IGNITION 500001035/G
iii
CONTENTS
PAGE
INDEX
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iii
1.0 INTRODUCTION
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1
2.0 TECHNICAL DATA
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1
2.1 Overall Dimensions
2.2 Technical Data Table
3.0 GENERAL REQUIREMENTS
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1
3.1 Related Documents
3.2 Feed Water Quality
3.3 Adequate Water Flow
3.4 Time Clock Control
3.5 Minimum System Pressure
4.0 LOCATION
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4
5.0 GAS SUPPLY
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4
5.1 Service Pipes
5.2 Meters
5.3 Gas Supply Pipes
5.4 Boosted Supplies
5.5 Boiler House Control Valve
5.6 Boiler Gas System Leak Check
6.0 FLUE SYSTEM
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5
6.1 General Requirements
6.2 Design Waste Gas Volume and Temperature
6.3 Flue Condensation
6.4 Materials
6.5 Disconnection
6.6 Flue Discharge
6.7 Surface Temperature
6.8 Flue System Location
7.0 AIR SUPPLY
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9
7.1 Air Supply by Natural Ventilation
7.2 Air Supply by Mechanical Ventilation
8.0 WATER CIRCULATION SYSTEM
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9
8.1 General
8.2 Pressure Relief Valve (Safety Valve)
8.3 Open Vent Pipe and Cold Feed Pipe
8.4 Altitude Gauge (Water Pressure Gauge)
8.5 Thermometer
8.6 Drain Taps
8.7 Circulating Pump
8.8 Minimum Water Flow Rates
8.9 Waterside Pressure Drop
8.10 Control Schemes
8.11 Unvented Pressurised Systems
8.12 Modular Boiler Control Schemes