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6
Installation
6.1
Correctly Siting the Water Heater
Install the water heater in an appropriate location, en-
suring all of the recommendations have been considered
(see Section 5.6 and 5.7).
6.2
Cold Water Inlet with Inlet Group
6.2.1 Install the Inlet Group
The inlet group regulates the pressure of the incoming
mains water supply to the water heater and removes any
debris that might be water borne.
Between the inlet group and the cold
water inlet on the water heater NO isolating
!
device may be fitted, as by doing so important
safety devices could be isolated!
1.Stop valve*
2.Pressure-reducing valve
3.Check valve
4.Pressure relief valve
5.Drain*
Figure 4:Inlet Connections
6.Expansion vessel
7.Drainage valve
8.Condensates drainage*
Installation
6.2.2 Expansion Vessel
The expansion vessel is mandatory on the Dimplex
water heater and can be connected directly to the cold water
inlet group, utilising the flexible hose supplied with the ves-
sel. The expansion vessel should always be fitted in accord-
ance with the manufacturer's instructions, see Figure 5. No
isolating device should be fitted between the water heater
and the cold water inlet group.
Furthermore, it is recommended to mount the vessel high-
er than the water heater to avoid having to drain the water
heater when maintaining and replacing the expansion vessel.
It is important to check the pre-charge pressure of the
expansion vessel membrane before filling the cylinder. The
pre-charge should be greater than or equal to 3 bar.
Figure 5: Connection of the expansion vessel
NOTE: The expansion vessel must be installed
to the side of the expansion relief valve
on the inlet group. To do this the blank-
ing plug must be removed and the ex-
pansion vessel connected, as shown in
Figure 5.
Figure 6: Cold water inlet group
NOTE:The drain valve must be installed
lower than the appliance to ensure all
of the water is drained away should the
immersion heater need to be serviced.
9
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