12
Installation (must be carried out only by qualified technicians)
Therm 4200 – 6 720 821 605 (2017/08)
5 Installation (must be carried out only by
qualified technicians)
DANGER: Explosion!
▶ Always turn off the gas cock before
carrying out any work on components
which c
arry gas.
The appliance must be installed in
accordance with the requirements of SANS
10087-1for use with LPG, SANS 827 for use
with NG and any fire department regulations
and/or local bylaws applicable to the area.
Installation, electrical connection, gas
installation, connection of inlet and exhaust
pipes and initial startup must be realized
exclusively by authorized personnel.
The appliance can only be sold in the
countries mentioned in the type plate.
NOTICE: Damage to the device!
Leaking connections.
▶ Do not put the device down on the floor
with the connect
ions facing
downwards, so that the metal threads
are not damaged.
5.1 Important information
▶ Before installation, consult the gas company and current
legislation regarding gas appliance and site ventilation.
▶ Install a gas shut-off tap as close to the appliance as
po
ssible.
▶ After connection to the gas main, the appliance should be
ca
refully cleaned and tested for leaks; to avoid damage
from excess pressure in the valve gas regulator, this should
be carried out with the gas valve shut.
▶ Ensure that the appliance installed is
suitable for the type
of gas provided.
▶ Ensure that the flow and pressures for the regulator
install
ed are those indicated for the consumption of the
appliance ( see technical data in table 4).
Water quality
The device is used for DHW heating for domestic purposes in
accor
dance with the relevant regulations. Use of a water
treatment system is recommended in areas with a high level of
water hardness. The water parameters, which have an effect on
limescale, must generally comply with the values given in
Tab. 5.
Table 5
TDS (Total dissolved solids) (mg/l) Hardness
(mg/l)
pH
0 - 600 0 - 180 6,5 - 9,0
NOTICE: Damage to the device!
If these values are not observed, it can result in
partial blockage and faster ageing of the
internal body of the device.
5.2 Selection of location for installation
Considerations relevant to location
• Do not install the appliance in rooms wher
e the free volume
is less than 8 m
3
.
• Fulfil requirements specific to each country.
•The appliance must not be ins
talled in sites where the
ambient temperature is susceptible to drop below 0 °C.
W
here there is a risk of freezing, disconnect and empty the
appliance.
• The gas heater must not be installed over a heat source.
• To avoid corrosion, products such as solvents, inks,
inf
lammable gases, glue or domestic detergents containing
halogenic hydro-carbons or any product that might
provoke corrosion must not be stored near the air
admission grill.
• Respect the minimum installation measurements indicated
in Fig. 12.
• The heater must not be instal
led in locations where the
room temperature can reach 0 °C.
In case of a frost risk:
▶Turn the heater off.
▶ Remove batteries.
▶Purge the heater ( sect
ion 7.3).
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