Radiant RSF 20 E Installation And Maintenance Manual - page 14
Installation Manual
GAS CONNECTIONS
The gas supply must be connected up by qualified person.
The following standards must be complied with: UNICIG 7131/72 and UNICIG 7129/92 (of 21/04/93)
Before installing the boiler, make sure of the following:
• the pipeline must be of an adequate section and length to carry the flow required and must be fitted with all safety devices and measures
prescribed by current norms;
• before turning on the boiler make sure the type of gas which it is designed to run on is available
• the gas supply pressure must lie within the values shown on the plate it is recommended that the gas supply pipeline should be checked
for residual obstructions before installing the
boiler;
Table n°1
Antifreeze Temperature
Ethylene glycol
(%) volume
freezing point
(°C)
boiling point
(°C)
10 -
4 101
20 -10 102
Recommended Glycol 20% percentage for temperatures down to –8°C.
• where the internal gas supply pipe meets
the boiler, a gas shutter cock must be fitted
which has the same diameter as the gas
inlet pipe;
• check thoroughly that the gas inlets and
outlets are properly sealed.
2000
1500
500
1000
Flowrate litres/h
Available head with by-pass partially (50%) on.
Available head at second speed.
Available head at top speed.
0
III
II
0
1
500
1000
5
2
3
4
He
ad
m
c.
w
.
6
7
II
Flowrate litres/h
1500
2000
III
II
3
0
1
0
2
4
He
ad m c
.w.
5
6
III
• conversion to allow the boiler to run on LPG
to natural gas or vice versa must be carried
out by a qualified gas fitter in accordance with law no.46 of
5th March ‘90 (see p.18).
mod.
RSF 20 E
RSF 24 E
ANTI-FREEZE SYSTEM
ANTI-FROST SYSTEM
Radiant boilers are equipped with an Anti-Freeze system which
comes into operation when the temperature falls to 5° C
(Heating sensor) and 4° C (Hot water sensor) and protects the
boiler down to –10°C external temperature.
To protect the internal Radiators, a room thermostat or remote
control must be fitted.
Circulating pump RSL 15/5-3
NOTE: The frost system will only come into operation if the
boiler is filled with water, and connected to a live gas supply,
with electrical supply and boiler controls in the “ON” position
(With the Main switch turned to Summer or Winter position)
and the gas supply turned on.
N.B. For external installations, see instructions at page 6.
mod.
RSF 30 E
FOR THE INSTALLER
For boilers installed outdoors, where the temperature may drop
below -2° degrees Centigrade, the system should be filled with
antifreeze liquid by an authorised technician and a set of
electrical heating elements should be fitted to protect the
domestic hot water heat exchanger.
ADVICE FOR THE SERVICE TECHNICIAN
If the boiler is out of service because it is frozen, check that no
parts have been locked in position by ice before putting it into
operation.
It is advisable to empty the boiler and the system in case of no
operation for a long period.
Circulating pump RSL 15/6-3
Recommended percentage of glycol for temperatures down to
- 8°C is 20%.The antifreeze liquid used must be of a good
make and in a solution which has already been diluted to avoid
the risk of uncontrolled dilution.
DOMESTIC HOT WATER WITH STORAGE CYLINDER – TA05A027.A0504
11