Grant EUROFLAME 50/70 User, Installation And Servicing Instructions page 20

Frost protection
3.10
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 8 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.
3.11 Boiler location
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 around the
boiler for the following:-
Access above the boiler to remove the baffles for
servicing.
Access at the front of the boiler to remove the
burner.
3 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 3.12, paragraph 2).
3.12 Water connections
Kitchen/Utility and Boiler House -
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 50/70, 70/90
models and 1¼" on 90/120 models.
2 Flow and return connections should preferably 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.
3 All models have a tapping (½" BSP) on the front
for the thermostat pocket, (pocket supplied loose
with Boiler House models).
20
3 - GENERAL BOILER INFORMATION
4 All water connections have been temporarily sealed
5 Fit drain taps in the central heating and domestic
6 Thoroughly flush the system before fitting the pump.
3.12a
System boiler
The system pipework may exit the boiler from either the
left hand or right side of the boiler casing. See Fig. 1.
1 Fit any elbows, bushes etc. to the heating return
2 The heating flow pipe (22 mm 50/90 or 28 mm 90/120)
See Fig. 11
3 The safety valve discharge pipe must be routed clear
4 The cold fill shut off valve should be fitted in an
Euroflame Oil Boilers
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.
Plug all unused connections.
hot water systems to allow the complete system to
be fully drained.
Water connections
tapping at the bottom (1" BSP 50/90 or 1¼" BSP
90/120) before placing the boiler in position if
access is restricted. Do not forget to plug the
unused connection on the opposite side.
and 15 mm safety valve discharge pipe are provided
with pushfit Tectite elbows to enable quick and simple
installation. Orientate the elbows for left or right hand
connection. Ensure that the installation pipework is
pushed fully home into the elbows.
The 90/120 boiler is supplied with a 28mm flow pipe
factory fitted for left hand side exit. A 28mm push fit
Tectite elbow is provided for easy connection of the
heating system pipework.
If required, the flow pipe may exit through the right
hand side panel. The 28mm factory fitted flow pipe
must be turned 90° and routed across the boiler
behind the control panel.
Important: Care must be taken not to obstruct
the cleaning cover door on top of the boiler as
removal of the door and the boiler baffles will
not be possible.
of the boiler to the outside, to discharge in such a
manner that the discharge can be seen but cannot
cause injury or damage to persons or property.
accessible position close to the boiler to enable
connection of the temporary flexible filling loop to
the boiler.