Weishaupt thermo condens WTC 15-A, Инструкция по установке и эксплуатации, Страница: 21 / 94

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4
4.4 Mains water connection
Hydraulic connection
1 Heating flow Ø 18 mm
2 Flow water heater or DHW Ø 15 mm
3 Gas Ø 18 mm
4 Return water heater or cold water Ø 15 mm
5 Heating return Ø 18 mm
6 Condensate outlet Ø 25 mm
Application in sealed heating systems
☞
On version -W: Connect flow and return pipes of
water heater.
☞
On version -C: Connect cold and hot water pipes.
☞
Connect flow and return (pipes should be rinsed
thoroughly before connecting).
☞
Install boiler, inlet and outlet valves
(available as an accessory).
☞
Install safety valve (available as accessories).
☞
Fit sludge trap in return pipe (if required).
☞
Fit expansion tank (WTC 32-A)
335
50
120
ca. 8
0
0
77,5
260
35
50
9
9,2
240
1 2 3 4 5
6
6
1
2
3
4
5
40
4.5 Filling with water
When filling the heating system, the requirements for the
heating system water (see also Ch. 3.4) should be
observed.
Unsuitable water results in scaling and
corrosion formation and can cause damage
to the condensing boiler.
Centre position three way valve
☞
Check pre-pressure of the diaphragm expansion
vessel.
☞
Prior to first commissioning, the heating system
should be flushed with at least twice the amount of
the system content to remove contaminants. Swarf,
rust, scale, sludge etc. can influence the operational
safety.
☞
Set three way valve of condensing boiler to it centre
position (only on version -W and -C).
☞
Open all thermostatic valves in the system.
☞
Loosen cap of quick action vent valve.
☞
Open service cocks for heating flow and return.
☞
Slowly fill heating system from tap connected to the
heating return (minimum system pressure >1.0 bar).
Observe all relevant regulations.
☞
Vent all radiators.
☞
Once the system has been vented, check system
supply pressure, if necessary repeat fill procedure.
☞
Seal joints and screwed unions should be checked to
ensure they are tight.
Note: The unit and any separately fitted pumps
must be switched off during filling.
ATTENTION