SupeRAC – 2F
For Models 93 to 405
16 ©MHS Boilers 29/05/2013
Care should be taken to ensure that the controls are set to avoid that the water
temperature within the system remains at a level where the return water temperature
is less than 60°C for gas firing or 50°C for oil firing.
If a modulating burner is being used, then the 4 core burner connection lead
(T6,T8,T7) should be ignored and not utilised. The thermostat sensing bulb for the
2
nd
stage control thermostat should not be located in the thermostat pocket, and the
temperature sensor supplied with the modulating burner temperature controls can be
substituted into the thermostat pocket in place of the 2
nd
stage thermostat sensing
bulb.