Hamworthy Purewell VariHeat 180c User Manual

Purewell Vari Heat c Boilers
Cast Iron, Pre-mix, Condensing, Modular Boilers with
Automatic Ignition for Heating and Domestic Hot Water
Installations
Installation, Commissioning
and Servicing Instructions
MODELS - 70c, 95c, 110c, 140c & 180c
NATURAL GAS I
2H
IMPORTANT NOTE
THESE INSTRUCTIONS MUST BE READ
AND UNDERSTOOD BEFORE INSTALLING,
COMMISSIONING, OPERATING OR
SERVICING EQUIPMENT

Hamworthy Purewell VariHeat 180c Specifications

General

Brand	Hamworthy
Model	Purewell VariHeat 180c
Category	Boiler
Language	English

Summary

3.0 Size and Space Requirements

4.0 Site Location and Preparation

4.2 Gas Supply

Standards, connections, pressure, and isolation valve requirements for gas supply.

4.3 Flues

Compliance with regulations, condensation management, slope, and material recommendations for flue systems.

4.4 Water Supply

4.5 Condensate Connections

4.6 Electrical Supply

Earthing, voltage, fuse rating, cable size, isolators, and time clock control restrictions.

5.0 Boiler Assembly

6.0 Pre-Commissioning

6.1 Gas Supply

Ensure gas installation pipework is tested and purged according to standards.

6.3 Pipework, Valves and Pump

7.0 Checks Prior to Lighting

7.1 Boiler Gas System Leak Check

Procedure to check for gas leaks on the appliance gas service valve and gas train.

7.2 Checks Prior to lighting the boiler

Ensure gas and electrical supplies are correctly connected and safety checks are performed.

7.3 Initial Lighting

Procedures for competent persons to safely light the boiler and perform initial checks.

7.4 Combustion Checks

Confirm correct combustion performance by measuring CO2 figures and adjusting gas mixture.

7.7 Burner Resistance Check

8.0 Boiler Controls

8.2 Controls Operation

Details on navigating the control system, info button usage, and display parameters.

8.3 Functions

8.4 Access to LMU Fault Log

9.0 Fault Finding

10.0 Servicing

10.1 Regular servicing

11.0 Replacement of Failed Components

11.1 Igniter and Flame Probe Assembly

11.2 Safety Temperature Limiter

11.3 Main Gas Valve

Recommended procedure for replacing the main gas valve assembly.

11.4 Combustion Fan