INSTALLATION INSTRUCTIONS
PREPARATION
The heater will arrive separately
from its storage bricks, the following
bricks will be required.
WMF718i - 12 bricks
WMF724i - 16 bricks
Two supplies are required for the
operation of this heater - a restricted Off
Peak or Economy 7 supply for the storage
circuit, and an unrestricted supply for the
fan boost element circuit.
Thermostatic fan / boost control is
provided on the heater, however the fan
/ boost operation may be customised by
the introduction of an external timer to
the heater (see section 3).
WARNING - This appliance
must be earthed
Only heat resisting cable (min. rating V75)
should be used. The wires in the mains
cable will be coloured as follows:-
GREEN & YELLOW - EARTH
BLUE - NEUTRAL
BROWN - LIVE
SUGGESTED FIXINGS
SOLID BRICK/BLOCK -
No. 10 Size plastic
inserts, 8mm drill bit. Drill hole 15mm
deeper than plastic insert length.
PLASTERBOARD -
If possible locate
studding and use No. 10 woodscrews
directly into the wood, otherwise M5 rawlplug
intersets are suitable.
NOTE: FOR OTHER WALL TYPES -
(e.g.
timberframe and hollow concrete)
SEEK
SPECIALIST ADVICE.
INSTALLATION
1.
ENSURE THAT FIXING KIT HAS BEEN
LOCATED BEFORE DISPOSING OF
PACKAGING.
Remove the front panel by removing the
three screws along its bottom edge. With
hands positioned on each side of the panel,
lift upwards to unhook the top edge whilst
pressing down on the top panel with your
thumbs. The panel can now be lifted clear
and set to one side.
Remove the packing pieces from the slots
on the inner front (3 on the WMF718i and 4
on the WMF724i).
2.
Remove the inner front panel by
unscrewing the screws along its top and
sides. As the front insulation is attached
care must be taken when lifting this panel
from the heater and placing it to one side.
Remove the three inner guards by removing
the screws along their bottom edges and
sliding the guards up and off the base tray.
Please note the location of each guard.
3.
CONNECTION OF THE MAINS CABLE
- Connect the restricted (E7) supply to the
terminal block, marked “Storage Circuit”,
having first passed the cable through a
front cable clamp in the base. Connect the
unrestricted (Peak) supply to the terminal
block, marked “Fan/Boost Circuit”, having
passed this cable through another cable
clamp in the base.
At this point, if desired, an external fan/
boost timer may be
fi
tted to the heater by
passing the two wires from the timer through
the remaining cable clamp, and connecting
them across the terminal block, marked
“Timer”, having already removed the link
fi
tted across this block at the factory.
IMPORTANT: When using an external
fan/boost timer, the fan inhibitor must
be disabled (see Section 4).
Connect the EARTH lead from both supplies
to the terminal marked with the symbol
IMPORTANT
DURING
NORMAL
OPERATION
ENSURE
BOTH
SUPPLIES
ARE
SWITCHED
ON
AT
THE
WALL
.
STORAGE CIRCUIT
FAN/BOOST
CIRCUIT
724i
718i
