Alpha E-Tec 20S User Manual

Installation and Servicing
Instructions
E-Tec 20S and 30S
Wall Mounted, Fan Assisted, Room Sealed,
Gas Fired, High Efficiency Condensing System Boiler
Nepicar House, London Road,
Wrotham Heath, Sevenoaks,
Kent TN15 7RS
For Technical help or for Service call ...
ALPHA HELPLINE Tel: 0344 871 8764
website: www.alpha-innovation.co.uk
Set for use with Natural Gas
Leave these instructions with the User
These instructions have been carefully prepared but we reserve the right
to alter the specification at any time in the interest of product improvement.
© Alpha Therm Limited 2018.
Part No. 1.041383 rev. ST.003581/001
0518/D382

Alpha E-Tec 20S Specifications

General

Boiler Type	Combi
Mounting	Wall-mounted
ERP Rating	A
CH Output (kW)	20
Heating Capacity	20 kW
Fuel Type	Natural Gas
Voltage	230 V
Frequency	50 Hz
Protection Class	IPX4D
Efficiency	98%

Summary

Benchmark Scheme and Code of Practice

Technical Data Overview

Technical Performance Data - Natural Gas

Specifies performance metrics for Natural Gas operation.

Installation Procedures

Boiler, Pipework, and Flue Installation

Fitting the Boiler and Pipework

Guides on physically mounting the boiler and connecting system pipework.

Fitting the Flue System

Commissioning the Boiler

System Filling and Controls

Initial Boiler Lighting

Checking Combustion Performance

Final Commissioning and User Handover

Wiring Diagram and Fault Finding

Illustrated Wiring Diagram

Detailed wiring diagram showing all electrical connections and component identification.

Error Codes and Possible Causes

A table listing error codes, faults, and their potential causes.

Gas Boiler System Commissioning Checklist