Boiler Installation - Grant EUROFLAME 50/70 User, Installation And Servicing Instructions

7 Filling of the system must be carried out in a
manner approved by the local Water Undertaking.
Where allowed, the system may be filled via the
filling loop supplied (the loop arrangement
includes a double check valve assembly).
8 All fittings used in the system must be able to
withstand pressures up to 3 bar.
9 Radiator valves must comply with the requirements
of BS 2767(10):1972.
10 One or more drain taps (to BS 2879) must be used
to allow the system to be completely drained.
To avoid the danger of dirt and foreign matter entering
the boiler the complete heating system should be
thoroughly flushed out - before the boiler is connected
and then again after the system has been heated and is
still hot. This is especially important where the boiler is
used on an old system.
For optimum performance after installation, this boiler
and its associated central heating system must be flushed
in accordance with the guidelines given in BS 7593:1992
'Treatment of water in domestic hot water central heating
systems'.
This must involve the use of a proprietary cleaner, such
as BetzDearborn's Sentinel X300 or X400, or Fernox
Superfloc. Full instructions are supplied with the
products, but for immediate information, please contact
BetzDearborn on 0151 4209563 or Fernox on 0179
9550811.
For Long term protection against corrosion and scale,
after flushing, it is recommended that an inhibitor such as
Betzdearborn's Sentinel X100 or Fernox MB01 or Copal
is dosed in accordance with the guidelines given in BS
7593:1992.
Failure to implement the guidelines may invalidate the
warranty.
3.13.4 Underfloor heating system - (See Fig. 15)
On underfloor systems it is essential that the return is
pre-heated by mixing flow water into the return before
it enters the boiler. The return temperature must be
maintained above 55³C to prevent internal corrosion of
the boiler water jacket.

4 - BOILER INSTALLATION

Euroflame Oil Boilers
Fig. 15 - Underfloor system
Unpack the boiler
4.1
Kitchen/Utility models
1 Carefully remove the packaging from the boiler
and remove it from the transit pallet.
2 Remove the boiler front panel (pulls off - two
push-on fixings) and remove the literature pack.
Boiler House models
1 Carefully remove the packaging from the boiler.
The literature pack is supplied on top of the boiler.
2 Unpack the burner. The pack contains the burner
and the combined boiler control /overheat
thermostat.
Refer to section 3.8 to fit a conventional flue.
Prepare the wall
4.2
See Figs 16 and 17
If the boiler is to be used with a balanced flue, decide
upon the position of the boiler and determine exactly
where the flue will pass through the wall.
Check that there are no obstructions in the way, that
the terminal position complies with the dimensions
given in Fig. 10 and then make the hole in the wall for
the flue as shown in Fig. 16 (low level flue) or Fig. 17
(high level flue).
Note: The hole dimensions given in Figs. 16 and 17
include an extra 10 mm over the size of the terminal to
provide clearance for fitting.
Note: When the boiler is installed with the back panel
against the wall and a high level flue, the throat of the
flue bend could enter the inner wall opening. Cut away
the underside of the hole in the inner wall to accept the
throat of the bend.
23