Specifications

Megaflo He
23
7.1 WARNINGS
IF WATER ISSUES FROM THE TEMPERATURE/PRESSURE RELIEF
VALVE ON THE PREMIER PLUS UNIT SWITCH OFF ELECTRICAL SUP-
PLY TO THE IMMERSION HEATER(S) OR SHUT DOWN THE BOILER.
DO NOT TURN OFF THE WATER SUPPLY. CONTACT A COMPETENT IN-
STALLER FOR UNVENTED WATER HEATERS TO CHECK THE SYSTEM.
DO NOT TAMPER WITH ANY OF THE SAFETY VALVES FITTED TO THE
PREMIER PLUS SYSTEM, IF A FAULT IS SUSPECTED CONTACT A COM-
PETENT INSTALLER.
7.2 TEMPERATURE CONTROL
IMMERSION HEATER(S)
A combined thermostat and thermal cut-out is provided for each immersion heater. The
thermostat is factory set to give a water storage temperature of approx. 60
o
C, however
it can be set to control between 10
o
C and 70
o
C. This will usually have been done during
installation. Adjustments can only be made by opening the terminal cover(s), DO NOT
remove the cover(s) without rst switching off the electrical supply. The
temperature adjustment is made by inserting a at bladed screwdriver in the slot in the disc
on top of the thermostat and rotating (see Diagram 7).
If in any doubt consult a competent electrician.
HEATING BY BOILER
The Premier Plus SystemFit is tted with an Indirect Thermostat which controls a 2 Port
motorised valve and hence the temperature of the water in the Premier Plus SystemFit
unit. The thermostat is factory set to give a water storage temperature of approx. 60
o
C,
however it can be set to control between 10
o
C and 70
o
C, this will usually have been
done during installation. Adjustments can only be made by opening the terminal cover.
DO NOT remove the cover without rst switching off the electrical supply.
Temperature adjustment is made by inserting a at bladed screwdriver in the adjustment
knob located on the front of the thermostat mounting bracket (see Diagram 8) and rotating.
At the minimum position the temperature will be approx. 10
o
C. The adjustment range 1 to 5
represents a temperature range of 30
o
to 70
o
C
If in any doubt consult a competent electrician.
DO NOT bypass the thermal cut-outs in any circumstances.
The space heating control temperature and the operating times for Heating and Hot Water
are set using the remotely mounted Controller. The optimum temperatures and times
will have been set during commissioning. Should the temperatures or timings need to be
altered refer to the Installation and User Instructions leaet supplied with the Controller
for the method of adjustment. If a second CH zone is tted this will be controlled by its
own programmable room thermostat. Refer to the manufacturers Installation and User
instructions supplied with the programmable room thermostat for the method of setting and
adjustment of heating times and temperatures.
7
User Instructions