Potable Water Connection - Dimplex ESSW2 Owner's Manual

Commissioning
cleaned to ensure that there is no cross con-
tamination of the heat transfer liquids
1. on the HXA pumping Station, rotate the Shut-
off Ball valves (Figure 14D), to the Flushing &
Filling position (position 2 - Figure 18).
2. Attach the Flush and Fill pumping system to
the Flush and Fill valve connections on the
pumping station (Figure 14H).
3. open Flush and Fill valves and pump a solution
of non-foaming detergent (i.e. TSp, mixed to
manufacturers directions) to flush the system of
any dirt or debris.
4. Flush the system with clean water to remove
any remaining solution or debris.
5. It is recommended that following the flush, 50
psi (3.4 bar) pressurized air to remove any re-
maining washing solution in the system.
!
nOTE: During either the liquid cleaning or the
air purging it is recommended that a pressure test
be completed to ensure that there are no leaks
before filling with the heat transfer solution. If leaks
are present it is recommended that they are re-
paired and the system be retested, to ensure no
additional leaks are present.
6. using Distilled Water
pumping station, fill the system.
7. once the system is filled, return the valves to
their original state.
Figure 20
Cold Water
Heated Water
T
Anti-Scalding
Expansion
Valve
Tank
and the Flush & Fill
Existing
Heating
System
T
Isolation Backflow
Valve Preventer
8. Switch off pump.
9. Install the provided insulating cover onto the
HXA pumping station and any additional insula-
tion on associated piping.
!
nOTE: piping insulation should be a minimum
of R-4.2.

Potable Water Connection

Warning: This system is to be installed in ac-
cordance to applicable plumbing Codes.
When installing the Dimplex Solar Water Heater
system additional plumbing will need to be added
to your existing water system. (Figure 20)
!
nOTE: Depending on local plumbing codes the
system may require the addition of a backflow pre-
venter on the supply water inlet.
Warning: If a backflow preventer is installed
in the system an expansion vessel will also be
required to allow for the changing volume/pres-
sure within the closed system.
1. pipe your potable water through an isolation
valve to the inlet of the Solar Storage Tank (the
bottom fitting).
!
nOTE: It is recommended that any systems
with hard water have a water softener installed in
line before the Solar Hot Water System to prevent
calcium build up and subsequently reduce the per-
formance of the system.
Solar Storage
Tank
Supply
Water
25