Commissioning; Heat Transfer Liquid System Filling - Polypropylene Glycol - Dimplex ESSW2 Owner's Manual

Commissioning

Warning: The initial start-up must be carried
out by a trained, qualified person and must be
recorded in writing. The technical documenta-
tion must be kept with the equipment.
CauTiOn: The installer should ensure that the
Solar Hot Water System is fully setup and func-
tioning correctly before connecting the Solar Hot
Water System to the Household water supply.
Before proceeding to fill the system verify that all
plumbing connections have been installed and
tightened, all electrical connections have been
made, all of the required flashing has been in-
stalled and all piping insulated with uV resistant
insulation.
There are manual valves incorporated into the
Solar Loop pumping Station as well as the HXA
pumping Station to allow for filling and draining of
the system.
Shut-off ball valves
The Shut-off ball valves (Figure 11D and Figure
14D) are equipped with integrated check valves
that can be set by hand. The arrow on the spindle
indicates the flow direction or position (Figure 18).
CauTiOn: The shut-off ball valves must only be
activated by trained operators. Failure to observe
the flow direction can result in the check valve
working against the intended flow direction and, as
a result, blocking the flow and possibly damaging
the system.
Valve settings with activated backflow preventers
are (Figure 18):
• open - normal operation - the arrows are verti-
cal, depending on the direction of flow.
• open - Flushing & Filling - the arrows are set at
45° angle, to disable the backflow preventer to
allow to fill the entire system.
• Closed - the arrows are horizontal to prevent
any flow through the valves - should only be
used during maintenance functions.
Lower shut-off valve (Only on the Solar Pump-
ing Station)
The lower shut-off valve is integrated in the small
distributor where filling/emptying tap is located,
Figure 18
Opened - Normal Operation
1
(Check Valve Active)
2
Opened - Flushing & Filling
(Check Valve Inactive)
3
Closed
above the flow meter (Figure 19 or Figure 11I).
When the valve is set between position 1 and 2,
the shut-off valve is a volume flow limiter through
the solar pumping station.
Heat Transfer Liquid System Filling -
Polypropylene glycol
Warning: rEaD MSDS DaTa SHEETS BE-
FOrE HanDLing LiQuiD. FOLLOW aLL
PErSOnaL PrOTECTiOn anD HanDLing
anD STOring rEQuirEMEnTS.
CauTiOn: Due to the nature of the compo-
nents it is suggested that the panels be covered
during installation, and filling to be performed
during the morning or evening hours to reduce
the amount of heat transfer and subsequent
hazard of scalding occurring on commissioning
and start up.
1. on the Solar pumping Station, rotate the Shut-
off Ball valves (Figure 11D), to the Flushing &
Filling position (position 2 - Figure 18).
2. Close the Isolating ball valve (Figure 11I) locat-
ed above the flow meter. (position 1 on Figure
19)
Note flow direction, which is
marked by an arrow!
To Solar
Collectors
From Solar
Collectors
To Solar
Collectors
From Solar
Collectors
To Solar
Collectors
From Solar
Collectors
23