41000981 Iss 09
MODEL
This unit is a 1035mm 6 or 9kW air curtain heater
designed for mounting above entrances but may also be
used as a space heater. It is supplied complete with
remote mounting control box.
MOUNTING
When mounted over a standard shop doorway the unit
should be fitted as low as possible and not more than
2.3 meters from ground level. A single unit will provide
reasonable coverage for a one metre doorway, and for
wider doorways units can be mounted end to end.
The unit should be positioned so that the airflow is not
obstructed by any part of the doorframe. When installed
the top of the heater case should be a minimum of
200mm from the ceiling.
880
75
INSTALLATION
Carefully unpack the unit and remove the top cover
fixing screws. The heater may be mounted using the
mounting bracket provided.
Loosen mounting screws, allowing the mounting bracket
to be removed from the unit. Making sure that the
mounting bracket is horizontal, fix the bracket to the
wall using 4 x No 8 wood screws.
Place the unit on the mounting bracket ensuring the
washers are spaced as shown on Fig 2 (a plain washer
either side of the mounting bracket).
Tighten screws to hold the unit at the required angle.
Fig 2
WALL BRACKET ASSEMBLY
The heater may also be mounted directly onto a
suitable wall or bearer by four No. 8 wood screws
through the holes provided in the back of the unit
casing. Keyhole slots are provided for the top two
fixings (fig 1).
ELECTRICAL CONNECTIONS
The heater is suitable for connection to a 400-415 volt
3 phase 50Hz supply. With modification the unit can
also be on a 230-240 volt 50Hz supply. For 230-240 volt
single phase operation, link terminals L1, L2 and L3 on
the main input terminal block and connect the supply to
L. The heater consumes approximately 6 or 9kW on the
full heat setting. The connections to be made between
the heater and the remote control box are shown in Fig
3 (see back page). An earth terminal is adjacent to the
terminal block and is clearly marked with the symbol .
For safety reasons a good earth connection must
ALWAYS be made to the heater and control box.
The unit must be wired in accordance with IEE
regulations for the Electrical Equipment of Buildings and
the installer should ensure that a suitable fused
isolating switch is connected in the mains supply.
REMOTE CONTROL BOX CONNECTIONS
CONTROLS
The unit is designed to provide 2 levels of heat, 4.5kW
and 9kW for HE7433, 3kW and 6kW for HE8326 together
with 2 fan speeds, normal and boost. The remote
control box houses 4 single pole switches to give the
following functions:
SWITCH 1 (left-hand)
ON/OFF
SWITCH 2
FAN SPEED CONTROL
SWITCH 3
½ HEAT ON/OFF
SWITCH 4
½ HEAT ON/OFF
FRONT VIEW
MAINTENANCE
ALWAYS ENSURE THAT THE MAIN EXTERNAL ELECTRICITY
SUPPLY IS SWITCHED OFF BEFORE SERVICING OF THIS
SCREEN-ZONE HEATER.
To obtain the best results from the heater it is essential
to avoid the accumulation of dust and dirt within the
unit and on the inlet and discharge grilles. Regular
cleaning is necessary with particular attention to the
fronts and backs of the fan motor blades. Cleaning of
the fan is best carried out with a soft brush.
THERMAL CUT-OUT
The units are protected from overheating in the event of
fan failure or an obstruction of the free airflow, by thermal
cut outs. If this happens the thermal cut outs effectively
switch off the appliance. The appliance will not operate
until the thermal cut outs are manually re-set. This should
be done by a competent electrician.
TO REPLACE A SWITCH IN THE CONTROL BOX
a)
Switch off the mains supply
b)
Remove the switch box cover.
c)
Disconnect the wiring to the switch.
d)
Release the spring clips and push out the switch.
e)
Fit the replacement switch, reconnect the wiring and
replace the cover.
SPARES
It is essential when ordering spares or replacement parts
to state the model number HE7433 and the serial
number on the rating place fixed to the top of the unit.
NB: DO NOT COVER ANY OF THE AIR INLET OR OUTLET
GRILLES AT ANY TIME.
In the interest of progress the Company reserves the
right to vary specifications from time to time without
notice. The material listed is offered subject to the
Company’s General Conditions of Sale, a copy of which
can be obtained on request.
Fig 1
OUTLINE DRAWING
