SupeRAC – 2F
For Models 93 to 405
15 ©MHS Boilers 29/05/2013
Turn on boiler at isolator and on/off on boiler control panel
– the burner should start
its start-up and ignition process.
Check gas train (gas burner) and any pipework between isolating valve and burner
connection for leakage.
Check oil lines / oil connections for soundness (oil burner).
Adjust burner in accordance with the burner manufacturer’s instructions and allow the
burner to stabilise for approximately 10
– 15 minutes; following which take
measurements of combustion gases, fuel throughput (gas burner) and making any
further adjustments as necessary. Record measurements.
Switch off boiler, remove any gauges and refit test points.
Restart/stop boiler several times to check integrity of ignition system.
Check combustion chamber door for correct sealing.
Check flue joints for integrity.
Check water connections for soundness.
(For gas fired burner only), with burner firing, turn off gas supply and ensure burner
goes to lockout. Wait 45 seconds, turn on gas supply, and press reset button on
burner
– ensure burner restarts normally.
Set controls to normal operational settings.
Instruct user on the operation of the boiler and its controls and safety functions.
User Instructions
Following the successful installation and commissioning procedures, the user must
be made aware of the lighting and operating instructions including a practical
demonstration.
This installation guide plus the burner instructions must handed over for safe keeping
and future reference.
Operation / Controls
The control panel includes two control thermostats which allows for the operation of
high / low firing (2 stage burners).
The left hand thermostat is for the control of the first stage (low fire) and should be
set to the actual final wanted flow temperature; the right hand thermostat is for the
control of the second stage (high fire0 and should be nominally set around 3-5
deg
rees lower than the first stage thermostat to allow the burner to reduce to it’s low
fire setting as the final setpoint water temperature is approached.