Williamson-Thermoflo FreeStyle 2 Series Manual page 116

FreeStyle
Series 2 wall mount gas-fired water boiler — Boiler Manual
38 Maintenance
Actions For Cleaning Of Heat Exchanger
Water Circuit
plastic screw placed next to the Heat exchanger return (6).
supply (1) and Heat exchanger system return (5).
Tighten the plastic screw placed next to the Heat exchanger
return (6).
exchanger system supply (1) and Heat exchanger system re-
cal conditioners. Use chemical conditioners that are able to
bris, lime scale, sludge, metal oxides and, in low temperature
with system hot and/or cold. The products used must not be
The processing time must be chosen according to the amount
must always be less than the maximum treatment time speci-
washing water with chemical and recover the product in ap-
to remove the chemical conditioner still present within the
Heat exchanger system delivery (1) and Heat exchanger system
return (5) connections.
Reconnect the system piping to Heat exchanger system deliv-
ery (1) and Heat exchanger system return (5).
Reconnect the unit to the electrical power supply using the
boiler.
Refill to correct pressure the Heat exchanger circuit.
Procedure for chemical cleaning of
DHW circuit
struction booklet.
Chemical cleaning and maintenance must be carried out by pro-
116
(continued)
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Do not carry out any operation on the sealed control parts.
should be carried out in an appropriate manner, in accordance
with current standards.
CaCO3), use suitably treated water in order to avoid possible
scaling in the boiler.
fluids provides a guarantee which ensures that its products are
prolonged boiler operation with untreated water and/or very
Figure 155
2
1
3 Gas inlet
4
3
5
6
4 Cold water inlet
5 System return
6
Part number 550-142-950/0919
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