30
5.
The maintained water supply pressure should not exceed 5 bar. A pressure reducing
valve will be needed for pressures over 5 bar to improve the system operation. It
should be installed to reduce both the cold feed pressure to the heater appliance
and the cold feed pressure to the Mira CombiForce 415 to approximately 3.5 bar.
Additional benefits may be obtained by fitting the water pressure reducing valve
after the premises internal stop valve, drain valve and if fitted, outside tap. The
valve should be correctly sized for the duty.
6.
The minimum maintained water supply pressure will need to be raised if the
minimum heater output power is greater than 7.5 kW on a reducing flow with a hot
temperature of 62.5°C.
Adjustable Maximum Temperature Setting
Mira CombiForce 415 shower controls are fully performance tested. The adjustable
maximum temperature (maximum angular movement prior to override) has been preset
under ideal installation conditions at the factory. Site conditions and personal preference
may dictate that the maximum temperature needs to be reset.
To reset the adjustable maximum temperature stop ensure that an adequate supply of hot
water is available in excess of that required from the shower control. Turn the control knob
fully anticlockwise. Check the temperature at the discharge point (allow hot water to reach
the shower). If incorrect, adjust the temperature as follows:
1.
Turn the control knob anticlockwise until the desired maximum temperature is
achieved. It may be necessary to press the override button and continue to rotate
anticlockwise, past the preset maximum temperature setting. Note the final
position of the button, e.g. 11 O ’clock.
2.
Turn the control knob fully off.
3.
Remove the concealing cap.
4.
Remove the control knob retaining screw/plastic temperature override stop and pull
off the control knob.
5.
Locate the adjustable temperature stop (identified by a part number and a “MAX °C”
symbol or a “MAX °C” symbol and component indentations).
Note!
Ensure that the original face identified, is uppermost after adjustment.
6.
With reference to the diagrams, carefully remove the adjustable temperature stop.
Reposition the stop so that the “MAX °C” symbol is aligned with the noted button
position, e.g. 11 O’ clock.
7.
To check the desired maximum temperature setting has been correctly set, refit the
hub and control knob, turn fully anticlockwise and check the temperature of the
water at the outlet. If still incorrect:
To
increase
the temperature, reposition the stop one serration
anticlockwise
.
Summary of Contents for Combiforce 415
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