Hamworthy Wessex 100 M100 User Manual (English)

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IMPORTANT NOTE

THESE INSTRUCTIONS MUST BE READ

AND UNDERSTOOD BEFORE INSTALLING,

COMMISSIONING, OPERATING OR

SERVICING EQUIPMENT

Wessex 100 M Series Boilers

High Efficiency, High/Low, Pre-Mix. Gas Fired,

Modular Boilers for Heating and Domestic

Hot Water Installations

Installation, Commissioning

and Servicing Instructions

Wessex 100 M100, M200 & M300 Models

NATURAL GAS

LPG-PROPANE

Table of Contents4
Introduction7
Technical Data10
General Requirements11
Related Documents11
Feed Water Quality11
Adequate Water Flow11
Time Clock Control12
Minimum System Water Pressure12
Location12
Gas Supply12
Service Pipes12
Meters12
Gas Supply Pipes12
Boosted Supplies12
Boiler House Control Valve12
Boiler Gas System Leak Check12
Flue System13
General Requirements13
Design Waste Gas Volume and Temperature13
Materials13
Suction14
Disconnection14
Flue Discharge14
Surface Temperatures14
Flue System Location14
Condensate Discharge14
Air Supply14
Air Supply by Natural Ventilation14
Air Supply by Mechanical Ventilation15
Water Circulation System15
General15
Pressure Relief Valve (Safety Valve)15
Open Vent and Cold Feed Pipe15
Altitude Gauge (Water Pressure Gauge)15
Thermometer16
Drain Valves16
Circulating Pump16
Minimum Water Flow Rates16
Water Pressure Drop16
Control Schemes16
Unvented Pressurised Systems16
Modular Boiler Control Schemes17
- Electrical Supply17
- Site Wiring17
- Indication Signals and Volt Free Contacts17
- Milton Boiler Sequence Control and Sequencing Interface Module (Optional)20
- Boiler Assembly and Installation20
- General20
- Connection of Boilers to the Flue System20
- Water Connections20
- Commissioning and Testing21
- Electrical Installation21
- Gas Installation21
- Water Circulation System22
- Commissioning the Boiler22
- Boiler Checks Prior to Lighting22
- Procedure for Initial Lighting23
- Checking/Adjusting Inlet and Setting Pressures23
- Combustion Check23
- Air Inlet Damper23
- Safety Checks23
- External Controls23
- Installation Noise24
- User's Instructions24
- Fault Finding25
- Safety Features Summary25
- Fault Finding Procedures26
- Possible Causes of Boiler Lockout26
- Servicing26
- Replacement of Failed Components30
  - Boiler Control Panel31
  - Pressure Switch31
- Recommended Spares35
Appendix 'A' - Information Relating to Propane Firing36
Appendix 'B' - Control Thermostat Setting Procedure37

Model	Wessex 100 M100
Manufacturer	Hamworthy
Category	Boiler
Output	100 kW
Fuel Type	Natural Gas
Operating Pressure	6 bar
Dimensions (H x W x D)	600 mm

Hamworthy Wessex 100 M100 User Manual

Table of Contents

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