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Cont...
The mixing valve may have specific servicing requirements – refer to manufacturer’s
instructions.
The water temperature must never exceed 65 °C as is will cause excessive scale
in hard water areas and can cause scalding.
6.19
Economy tariffs:
Regional electricity supplier shave their own ‘Off-Peak’ tariffs that will
provide an economical supply of power for the Electrastream system.
It is vital that the time settings of the Electrastream control unit are set to make the
most use of the available ‘off – peak’ tariffs.
6.20
Normal tariffs:
IMPORTANT: Operating the Electrastream during normal tariffs will
increase running costs.
Normal tariffs are at all times that are not designated for ‘Off-Peak’, the cost of
electricity during normal times will be more expensive. Therefore avoid setting heating
and hot water ON during these periods.
6.17
Temperature & pressure relief discharge:
Note: The Tundish or discharge pipe should remain visible, do not box in or cover up.
The Electrastream hot water cylinder has a Temperature/ Pressure relief valve (TPRV); in
the event of the pressure within the cylinder becoming too high, the TPR valve will vent.
The heating system has its own Pressure relief valve (PRV) and in the event of the
pressure within the heating system becoming too high, the PRV will vent.
The combination valve also includes a PRV. These PRVs can be manually opened by
turning the red knob clockwise, to close the valve continue turning clockwise until it
clicks.
A Tundish provides an air break when pressure is being vented from the cylinder TPRV.
When pressure is being vented, water/steam will be evident at the Tundish and from
the discharge pipe of the tundish.
In the event of hot water/steam being emitted at the discharge pipe or tundish,
switch the system off and contact installer.
6.18
Thermostatic mixing valve:
The mixing valve will be fitted in the supply to the hot
taps/ outlets. This valve mixes hot water from the cylinder with cold water to provide
hot water of a constant temperature at the taps.
The recommended maximum hot water temperature at the taps is 60 °C.
The recommended setting of the valve is between No.4 and 6 (49° to 58 °C).
The mixing valve is factory set to the following approximate mixed outlet temperatures:
Knob Position
Min
1
2
3
4
5
6
7
Max
Output Temp
o
C
27
o
32
o
38
o
44
o
49
o
53
o
58
o
63
o
67
o
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