Technical data

© MHS Boilers Ltd
221106 Draft Copy E&OE
34
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 individual modules their dedicated circulation pumps
should be bleed and checked to ensure free rotation of the armature.
Combustion System Commissioning.
The commissioning function enables the boiler to be started up in heating mode by
pressing the
Chimney Sweep Button (11) on the module controller.
There are two levels of operation accessed via the Chimney Sweep Button (11)
Operation at Maximum Output With No Adjustment.
Pressing the
Chimney Sweep Button (11) for more than 3 seconds but less than 6
seconds places the respective module in High Fire mode.
To indicate that the module is operating under the control of the
Chimney Sweep
Button the display (3) will indicate SF and the red Lockout LED (7) will flash with a
single pulse.
This mode is maintained until the limit thermostat temperature is reached or the
Chimney Sweep Button is pressed from more than 1 second.
Operation at Maximum or Minimum Output For Flue Gas Analysis and Gas Valve
Adjustment
Pressing the
Chimney Sweep Button (11) for more than 6 seconds. places the
respective module in High Fire mode.
To indicate that the module is operating under the control of the
Chimney Sweep
Button the display (3) will indicate 100 for High Fire and 0 for Low Fire and the red
Lockout LED (7) will flash with a double pulse.
To alternate the module between High Fire and Low Fire the
Chimney Sweep and
P Buttons must be pressed for less than 1 second.
P Button
High Fire
Button
Low Fire