Grant 140/160, Инструкция для пользователя, по установке и обслуживанию

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23 Multi Pass Oil Boilers
For additional protection of either the entire heating
system, or the boiler and localised pipework, it is
recommended that a frost thermostat be installed.
Refer to Section 7 for connection details.
To protect the heating system the frost thermostat
should be sited within the house in such a place that it
can detect any rise and fall in the ambient air
temperature, i.e. in a room with a radiator.
Where the frost thermostat is installed outside the
house (to protect a boiler installed in an external boiler
room or garage) or in an attic, it is recommended that
it be used in conjunction with a pipe thermostat to
avoid unnecessary and wasteful overheating of the
property. The pipe thermostat should be located on the
boiler return pipe, and set to operate at 25°C. Refer to
Section 8 for connection details.
1 The boiler must stand on a surface that is firm and
level. It does not require a special hearth as the
temperature of the boiler base is less than 50°C.
2 Sufficient clearance must be allowed at the front of
the boiler to remove the burner and baffles for
servicing.
3 Kitchen models - Once the boiler has been
installed, a permanent worktop may be fitted over
it as access to the top of the boiler is no longer
required after installation.
4 If the boiler is to be installed with a side against a
wall, allow a nominal clearance of 20 mm for the
plugs for the water connections. Water connections
may be taken from one side only if required (see
Section 3.11, paragraph 2).
5 Boiler House models - Sufficient clearance must
be allowed around the boiler for the following:-
Access above the boiler to replace the boiler
thermostat/overheat thermostat and access to
remove the burner.
1 A high level flow and low level return connection
are provided on each side of the boiler. See Fig. 1.
1" BSP connections are used on the 50/70 and 70/90
models.
1 1 /
4
" BSP connections are used on the 90/140,
140/160 and 160/200 models.
3 - GENERAL BOILER INFORMATION
Frost protection 3.9
Boiler location 3.10
2 Flow and return connections should be diagonally
opposed, i.e. to opposite sides of the boiler. If the
boiler is to be positioned against a wall, the water
connections may be taken from one side only, in
which case the thermostat phials should be located
on the same side as the connections.
Note: All models have two tappings (½" BSP) on
the top for the thermostat pocket supplied with the
boiler (Kitchen models) or burner (Boiler House
models). The other tapping should be plugged,
using the plug supplied.
3 All water connections have been temporarily sealed
with plastic caps to prevent any residual water
(from factory testing) leaking from the boiler
during transit. All the caps must be removed before
connecting any fittings.
4 A ½" BSP tapping is provided at the bottom right
hand corner on the front of the boiler to allow the
fitting of the drain tap supplied.
Plug all unused connections.
5 Fit drain taps in the central heating and domestic
hot water systems to allow the complete system to
be fully 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 Restorer. 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 MB1 is
dosed in accordance with the guidelines given in BS
7593:1992.
Failure to implement the guidelines may invalidate the
warranty.
Water connections (kitchen & boiler house) 3.11