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Powrmatic HEMSL 175-21 User Manual

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www.powmatic.co.uk
+44 (0) 1460 53535
info@powrmatic.co.uk
Doc Ref: M103 Issue 3.1 Feb 2018
Industrial & Commercial Heating Systems
HEMNVx & SL Heat Exchanger Modules
User, Installation
& Servicing Manual
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Powrmatic HEMSL 175-21 Specifications

General IconGeneral
Input Frequency50/60 Hz
Power Consumption15W
Efficiency85%
Protection ClassIP20
Storage Temperature-20°C to +70°C

Summary

Certificate of Guarantee

User Instructions

Installation

Guidance on the physical fitting and connection of the unit.

User Operation

Description of Operation

Explanation of how the heater functions under normal operating conditions.

Heater Specifications

General Requirements

Electrical Supply

Requirements for the electrical power supply to the unit.

Gas Supply

Requirements for the gas supply connection and pressure.

Fitting the Unit

Module Fitment

Instructions for safely handling and positioning the unit.

Combustion Air Inlet & Flue Outlets

Guidance on connecting air inlets and flue outlets.

Installation Specifics

Gas Installation

Requirements for the gas installation, testing, and purging.

Electrical Connections

Guidance on making electrical connections to the unit.

Electrical Cable Installation

Wiring Terminal Locations

Wiring Terminal Locations Continued

Wiring Diagram - Single Burner (ON/OFF)

Wiring Diagram - Dual Burner (ON/OFF)

Wiring Diagram - Single Burner (HIGH/LOW)

Wiring Diagram - Dual Burner (HIGH/LOW)

Wiring Diagram - Single Burner (Modulation)

Wiring Diagram - Dual Burner (Modulation)

Commissioning and Testing

Installation Checks

Checks for electrical and gas installations before lighting.

Lighting and Shut Off Procedures

Steps for lighting the heater and shutting it down safely.

Burner Gas Pressures

Standard On/Off Units

Setting and checking gas pressures for standard burners.

High/Low Regulator

Procedure for adjusting high and low fire gas pressures.

Burner Gas Pressures Continued

Modulating Regulator

Procedure for adjusting modulating gas pressures.

Control Settings and Tests

Flame Current Measurement

Procedure for measuring flame current for safety verification.

Servicing

General Servicing Guidelines

General recommendations for annual servicing of the unit.

Main Burner Assembly Removal

Steps for safely removing the main burner assembly for servicing.

Ignition and Rectification Electrodes

Inspection and maintenance of ignition and rectification electrodes.

Servicing Continued

Component Replacement

Procedures for replacing faulty major components.

Servicing Continued

Fault Finding

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