Kits Available On Request - Immergas HERCULES Solar 26 1 A Instruction Booklet And Warning

Close the cold water inlet valve and open any
domestic hot water valve. Loosen the nuts on
the system flow and return pipes (3) and the cold
inlet and hot outlet nuts present on the storage
tank unit (1). Empty the solar system via its drain
fitting. Loosen the nuts (6) on the solar system
flow and return pipes present on the cylinder.
Loosen the nut (4) on the connection pipe to
the DHW expansion vessel. Loosen the bracket
fixing screws (2) Remove the screws (5) with the
relative retainer brackets and slide the cylinder
outwards on the relevant guides. Work in reverse
order to assemble the storage tank unit.
N.B.: every year a skilled technician (e.g. Im-
mergas Authorised After-sales Service), must
check the efficiency of the storage tank unit
Magnesium Anode. The storage tank unit is
prepared for introduction of the domestic hot
water pump fitting.

1.21 KITS AVAILABLE ON REQUEST.

• Pump kit (on request). The boiler storage tank
unit is prepared for application of the pump
kit. Immergas supplies a series of fittings and
attachments that allow connection between
the storage tank unit and domestic hot water
system. The pump probe fitting is already inser-
ted on the storage unit kit and the indication of
the pump kit attachment is envisioned on the
installation template.
• Kit of system shutoff valves (on request). The
boiler is designed for installation of system
interception cocks to be placed on flow and
return pipes of the connection assembly. This
kit is particularly useful for maintenance as
it allows the boiler to be drained separately
without having to empty the entire system.
• Polyphosphate dispenser kit (on request). The
polyphosphate dispenser reduces the formation
of lime-scale and preserves the original heat
exchange and domestic hot water production
conditions. The boiler is prepared for applica-
tion of the polyphosphate dispenser kit.
• Zone pumps kit (on request). If the central
heating system is to be divided into several
zones (max. three) in order to interlock them
with separate adjustments and to keep water
flow rate high for each zone, Immergas supplies
zone pump kits on request.
• Low temperature kit (on request). If the central
heating system is to be divided into high tem-
perature zones (radiators) and low temperature
zones (floor plants) in order to interlock them
with separate adjustments and to keep water
flow rate high for each zone, Immergas supplies
the low temperature kit on request.
• Low temperature safety thermostat kit. With
the boiler functioning in direct low tempera-
ture (no control downstream from the boiler),
to prevent problems to the low temperature
system a safety thermostat must be inserted
onto the flow pipe.
The above-mentioned kits are supplied complete
with instructions for assembly and use.
1.22 SOLAR CIRCULATION UNIT
COMPONENTS.
13
2
1
10
11
4
8
12
4
IN
12 8
Key:
1 - Solar pump
2 - Non-return valve, thermometer and valve
3 - Valve drain fitting
4 - Flow meter
5 - 6 bar safety valve
6 - 3/4" connection for expansion vessel
7 - Manometer
8 - Draining valve
9 - Filling valve
10 - Insulating casing
11 - Flow rate regulator
12 - Inlet
13 - Outlet
14 - Reference for flow rate readin
5
3
7
6
9
6
5
4
3
2
1
11 12
1
9
7
5
PL
Fig. 1-22
CZ
HU
RO
IE
SK
14
OUT
13
6
133