© MHG Heating Ltd
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MHG Heating Ltd, Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey, KT20 5LR
0845 6448802 Telephone. 0845 6448803 Fax. Email
Website
www.mhgheating.co.uk
010113 Draft
Commissioning The Appliance
Pre-Commissioning Checks
Prior to undertaking the commissioning of the unit please ensure that the system water has been
cleansed and treated with a suitable inhibitor as detailed in Filling the system and system water
quality.
Prior to applying power to the appliance its circulation pumps should be bled and checked to
ensure free rotation of the armature.
Combustion System Commissioning.
A flue gas analyser must be used to ensure that the correct combustion settings are
achieved.
The appliance must be placed in the commissioning mode to check and set the
combustion at Maximum and Minimum outputs.
This achieved as follows.
Locate the flue gas sampling point on the flue adapter mounted directly above the boiler.
The commissioning mode can be activated by pressing the following buttons in the required
sequence.
Required Function
Buttons
Display
Low Fire
Service Button 4 & Minus Temperature Button 2
L
Hire Fire Heating Mode
Service Button 4 & Plus Temperature Button 2
h
Highest Firing Mode
Service Button 4 & Plus Temperature Button 2 Twice
H
Exit Commissioning
Mode
Minus Temperature Button 2& Plus Temperature Button
2
Normal
Control
