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REGULUS - R2GC storage water heaters - www.regulus.eu
6 - Installation and Commissioning
Installation must meet valid rules and may be done only by quali
fi
ed staff. The tank shall be placed on the
fl
oor, as close to the heat source as possible.
Warning: Defects caused by improper installation, use or handling are not covered by warranty.
6.1 - Connection to heat sources
Connect heating circuits to the inlets to and outlets from heating coils. The heat source for the tank - 2 enam-
eled coils - connects with G 1” coupling.
6.2 - Connection to a solar system
The tank can be used with a solar system. In such a case, the inlet for hot heat-carrying liquid coming from the
solar system shall be connected to the G 1” upper sleeve of the lower heating coil and the lower outlet to the
return piping to the solar system. Insulate all the piping between the tank and the solar system.
6.3 - Heating rod installation
The G 6/4“ side sleeve is designed to accommodate an electric heating rod. Heating rods of output up to 6 kW
can be used (depending on the tank diameter and rod length), connected either directly to the mains (thermo-
stat-equipped rods), or to a heating system controller. The installation may be done by quali
fi
ed staff only.
Warning: Electric heating elements shall be protected by a safety thermostat.
6.4 - Connection to water mains
DHW piping shall be done according to valid rules. G 1” threaded couplers are used to connect the tank to
a cold water inlet and hot water outlet. A 6bar safety valve shall be installed at the cold water inlet, installa-
tion of a reducing valve is recommended. If the pressure from water mains exceeds 6 bar, a reducing valve is
necessary. In order to prevent water loss, an expansion tank should be installed at the cold water inlet as well
(8l volume for R2GC 200, 250 and 12l volume for R2GC 300 and 400).
Should the water be too hard, install a water softener before the tank. In case the water contains mechanical
impurities, install a strainer.
A suitable thermostatic mixing valve should be installed at the hot-water outlet from the tank, preventing too
hot water from entering the taps.
Install a drain valve to the lowest point of the tank.
Complete DHW piping shall be properly insulated.
6.5 - Electronic anode rod installation
So called electronic anode can be used instead of the magnesium one. Its principle advantage is that its
proper function is signaled by a control lamp while a magnesium anode rod needs to be taken out for check. In
such a case, just visual check of the electronic anode is suf
fi
cient.
Please use a G 5/4” to G ½” reducing coupler when installing an electronic anode. In order to protect the tank
properly and meet its warranty conditions, select an anode from the table below. A space of about 0.5 m is
needed between the tank top and ceiling to install/exchange the electronic anode rod (0.35 m for R2GC200).
Kit for R2GC storage water heaters
Code
Anode rod length [mm]
For storage water heaters
9176
350 (200/150)
R2GC 200
9177
500 (350/150)
R2GC 250, R2GC 300, R2GC 400
