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RDC 200Z - www.regulus.eu
6 - Installation and Commissioning
Installation must meet valid rules and may be done by qualied staff only.
Warning: Defects caused by improper installation, use or handling are not covered by warranty.
6.1 - Connection to heat sources
Install the tank on a wall, as close to a heat source (solar thermal system, gas boiler) as possible. Connect it
using G 1“ couplers.
6.2 - Connection to a solar thermal system
The tank can be used with a solar thermal system. In such a case, the inlet for hot heat-carrying liquid coming
from the solar thermal system shall be connected to the G 3/4” upper sleeve of the heating coil and the lower
outlet to the return piping to the solar thermal system. Insulate all the piping between the tank and the solar
thermal system.
6.3 - Heating element installation
The G 6/4“ side tapping is designed to accommodate an electric heating rod. Heating rods of output up to 6
kW can be used, connected either directly to the mains (thermostat-equipped rods), or to a heating system
controller. The installation may be done by qualied staff only.
Warning: All 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 3/4” 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, installation of
a reducing valve is recommended. If the pressure from water mains exceeds 6 bar, a reducing valve is nece-
ssary. In order to prevent water loss, an 8 l expansion tank should be installed at the cold water inlet.
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 - Commissioning
Fill the heating circuit with the appropriate uid and air-bleed the entire system.
Fill the tank with cold water following this sequence:
- open the shut-off valve at the tank inlet
- open the hot water tap/outlet point, as soon as hot water starts owing, lling is complete; close the tap
- check all connections for leaks and the system pressure
Hot water quality must meet the conditions shown in the Table of limit values for total dissolved solids
in hot water, page 4 of this Manual.
Set the heating controller in compliance with the documentation and manufacturer’s recommendations. Check
regularly a proper function of all control and adjusting elements.
