Dimplex ESSW2 Owner's Manual page 16

installation instructions
CauTiOn: The pumping stations described are
to be operated as described in these instruction
with the recommended solar heat transfer liquid.
(See Heat Transfer Liquid Section for specific infor-
mation)
CauTiOn: Do not make any changes to elec-
trical components, the design or the hydraulic com-
Figure 11
From Solar
Collectors
D
80
A
K
C
To Heat
Exchanger
A. Insulation Housing
B. Circulation pump
C. Air Separator
D. Temperature Dials & Shut-off Ball Valves
with built-in Check Valves
E. Volume Flow Indicator
F. pressure Relief Valve and Discharge pipe
G. pressure Gauge
H. Flush and Fill Connections
I. Isolating Ball Valve
J. Expansion Tank Connection
K. Air Separator
Connections
Thermometer
Pressure gauge
Pressure relief Valve
16
To Solar
D
Collectors F
Glycol Overflow
80
To Expansion
J
Tank
G
H
B
I
H
E
From Heat
Exchanger
Specifications for Pumping Station - Solar Loop-A
Solar circuit for expansion tank
Display Range 70 - 300 °F (20 - 150 °C)
Display Range 0 - 150 psi (0 - 10 bar)
Activation pressure 87 psi (6 bar)
ponents. Any other use not recommended by the
manufacturer may cause electric shock or injury to
persons.
Warning: Improper ventilation will result in
pressure loss and can cause malfunctions in
the Solar Hot Water System. The temperatures
of the leaking air and the heat transfer medium
may be higher than 140°F (60°C). Therefore,
there is a risk of scalding. The vent is located at
the highest point of the system. once the sys-
tem has been carefully and properly ventilated,
the system pressure must be increased to the
operating pressure again.
The Solar pumping Station - Solar Loop-A is de-
livered as a preassembled system. The expansion
tank and pressure relief valves are included as
separate components and installation instructions
can be found in the corresponding sections.
The unit is comprised of: a 3-way directional dis-
tributor that incorporates a manually adjustable
non-return and isolating ball valve together with
an over pressure relief valve (87 psi/6 bar) (Figure
11F); a connection point for a solar rated expan-
sion tank (Figure 11J); an isolating ball valve, that
is fitted above the volumetric flow meter (Figure
11H), complete with flow and return filling points
with dedicated isolating ball valves for system
commissioning purposes; the 'flow' line incorpor-
ates a further manually adjustable non-return and
isolating ball valve at the temperature head and
also features a permanent 'air separator' (Figure
11C); and a 2 part Epp insulated cover.
The system must be installed on a load-bearing
wall, in a dry location. The location, relative to the
HXA pumping station, will be dependant on the
type of piping used to connect the two pumping
stations together.
3/4" MnpT
3/4" MnpT
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