It is advisable to install a non-return valve on
the supply side of the heater to avoid
problems caused by sudden changes in
supply pressure.
14
Installation (must be carried out only by qualified technicians)
Therm 4200 – 6 720 821 605 (2017/08)
5.5
Hydrogenerator operation
The hydrogenerator (hydrodynamic generator) is inserted in
the water circuit between the water valve and the heat
exchanger. This component has a turbine that rotates when
water flows past its blades. This movement is transmitted to an
electric generator which powers the heater ignition unit.
The electrical voltage value supplied by the HDG is between
1,7VRMS and 2,2 VRMS AC. In this way, there is no need for
batteries.
5.6
Gas connection
DANGER:
Non-compliance with legal standards
applicable may cause a fire or explosion,
causing material damage or personal injury
or even death.
Only use original accessories.
The gas connection to the water heater must absolutely comply
with the National Standards.
▶ First ensure that the water heater to be installed
corresponds to the type of gas supplied.
▶ Fit a gas shut-off valve at the entrance as close as possible
to the appliance.
▶ After completion of the gas network. thorough cleaning
must be done and a tightness test carried out to avoid
damage due to excess pressure in the gas system, this has
to be carried out with the gas valve of the appliance closed.
▶ Check that the flow and the pressure supplied for the
reducer installed are those indicated for the consumption
of the appliance (see technical data in tab. 4).
Installation with flexible tube (G.P.L.)
DANGER: Danger to life caused by gas leak!
▶ Proceed to replace the tube if you find
that it is dry and fragile.
▶ Replace the tube at least every four
years.
The installation, if done with flexible tube (not metal), only for
appliances designed to be connected to a bottle of Butane,
must comply with the following:
•
must have a possible minimum length of at most 1.5 m;
•
the tube must comply with ET IPQ 107-1 and applicable
standards;
•
must be controllable all the way through;
•
must not come near areas where heat is released;
•
avoid folds or other bottlenecks;
•
the connection at the ends must be made with proper
accessories and tabs without grooves
▶ Check that the supply tube is clean.
▶ Use the accessory door rubbers (supplied) and a tab to
make the connection to the incoming gas of the appliance.
Installation with connection to a gas supply network
▶ In the case of an installation with connection to a gas supply
network, you must use metal tubes in accordance with the
applicable standards.
To make the connection between the gas supply network and
the water heater, you must use the accessory supplied.:
▶ Tighten the coil in the incoming gas tube.
▶ Use the end in copper to do the welding to the tube from the
supply network
Gas pressure regulator
This appliance requires an operating pressure of 2,8 kPa at the
appliance. A suitable LPG regulator that complies with the
requirements of SANS 1237 must be installed.
Any local by-laws and regulations pertaining to installation and
use of gas-heated appliances must be observed.
Please refer to the laws that should be attended in your
country.
5.7
Commissioning
▶ Turn on the gas and water cocks and check all connections
for leaks.
▶ Insert the two batteries correctly (Fig. 4) 1.5V type R
supplied with the heater.
▶ Check flue gas safety device is functioning correctly,
proceed as explained in section 7.4.
Содержание T4200 11-2D
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