Vaillant ecoMAX 665, Installation And Maintenance Manual

Page: 20 / 40

20
Installation and maintenance manual ecoMAX 665 / 0020020159_03
5 Putting the boiler into service
h Note!
Vaillant offer a commissioning service. If used
a 2 year warranty is given, if not only a 1 year
warranty is available
Observe the following when putting the boiler into service:
• Remove the cap of the automatic air vent (see 10 / fig.
5.1) before filling the heating circuit/DHW primary circuit.
• Start the venting program for the heating circuit/DHW
primary circuit (see chapter 8.1.5).
a Caution!
The front cover should only be removed
• for initial installation access
• for servicing
• for testing
For continuous and safe operation the front
cover must be fitted together with a correctly
fitted and sealed flue system.
5.1 Water circulation system
Detailed recommendations for the water circulation
system are given in BS 6798 and BS 5449: Part 1 (for
small bore and micro bore central heating systems). Pipe-
work not forming part of the useful heating surface should
be insulated to help prevent heat loss and possible freez-
ing, particularly where pipes are run through roof spaces
and ventilated underfloor spaces. Draining points must be
located in accessible positions which permit the draining of
the whole system including the boiler and the hot water
system. Draining points should be at least 1/2 in. BSP nomi-
nal size and be in accordance with BS 2879. The boiler is
suitable for use with minibore or microbore systems. Cop-
per tubing to BS 2871: Part 1 should be used for water car-
rying pipework. All capillary joints in all DHW pipework
must be made with lead free solder. Particularly where a
new boiler is to be fitted to an existing system, it is good
practice that the system is thoroughly cleansed.
Important!
To prevent the formation of deposits and
prevent serious damage to the appliance and
system, cleansers must be used carefully and
must be completely removed by thoroughly
flushing the system. Cleansers should only
be left in systems for a maximum of 24 hours.
This cleansing must take place prior to the fitting of the
new boiler and be in accordance with BS 7593. For ad-
vice on the application of system cleansers contact:
Sentinel, Betz Dearborn Ltd. Widnes,
Cheshire, WA8 8UD. Tel: 0151 495 1861 — or
Fernox, Cookson Electronics, Forsyth Road, Sheerwater,
Woking , Surrey GU21 5RZ,01483 793200
5.1.1 Treating the heating water
If you enrich the heating water with frost or corrosion
protection fluid, changes can be caused in the seals and
noises may arise during the heating operation. Vaillant
assumes no liability for this (or for any subsequent re-
sulting damage). Please inform the user as to how to go
about frost protection.
5.1.2 Heating side filling and bleeding
For the heating system to function perfectly, a water
pressure/filling pressure of between 1.0 and 2.0 bar is
necessary. If the heating system stretches out over
several storeys, higher values for the water level of the
system at the pressure gauge can be necessary (maxi-
mum pressure for safety valve: 3 bar).
a Caution!
Filling the system must only be carried using
a proprietary filling loop in domestic applications.
For commercial applications a pressurisation
unit shall be installed.
5.1.3 Final system flush (”Hot”)
• Turn on the boiler for central heating and allow the
boiler and system to reach temperature.
• Check that the heating system is watertight.
• Turn the boiler off and rapidly drain both boiler and
system while still hot
• Refill the system and release all air.
• Release water from the system until the system design
pressure of 1.0 bar is attained. (The actual reading on
the pressure gauge should ideally be 0.5 bar plus an ad-
ditional pressure corresponding to the highest point of
the system above the base of the boiler – 10 m head
equals an additional 1 bar reading on the pressure gauge.
The minimum pressure should not be less than1 bar in
any installation.) If the system is to be treated with an
inhibitor it should be applied at this stage in accordance
with the manufacturer’s instructions. Further informa-
tion can be obtained from Sentinel, Betz Dearborn Ltd.,
Tel: 0151 4951861, or Fernox, Tel: 01483 793200
• Disconnect the temporary filling connection.
• Refit the boiler casing.
h Note!
The venting program (“P.0”) runs for approx.
6.5 minutes.
a Caution!
For the venting of the system, the minimum
pressure must be 1.0 bar.
If pressure is too low, the boiler will not fire.
Do not allow the water pressure to drop below the above
minimum during venting.
5 Putting the boiler into service