Electrical connection
All products are fi tted with a microprocessor control. Electrical
power and control connections are made as shown in
Fig. 6 & 7
.
A suitable local isolating switch must be provided in the electrical
supply circuit with at least 3mm clearance on each pole. In order
to access the electrical connections, remove the inlet grilles (see
‘x’ in
Fig. 3
). Remove the front panel (see ‘z’ in
Fig. 3
) and also
remove the mains cover plate (see ‘y’ in
Fig. 3
).
ARC Electric Models
Feed an appropriate supply cable as shown in
Fig. 4
and attach
to the terminal block (see ‘a’ in
Fig. 4
).
Note: Ensure that cables are secured to the cable tray with fi xing
ties to avoid contact with the elements.
ARC Water/Ambient Models
Feed an appropriate supply cable as shown in
Fig. 5
and attach
to the terminal block (see ‘a’ in
Fig. 5
and
Fig. 7
).
A suitable cable for a switch panel (kit ref. - CABC5 for electrically
heated models or CABC6 for water heated/ambient models) can
be similarly introduced through the top panel and connected to
the circuit board.
If the unit is to be operated in conjunction with a door switch, a
normally closed switch should be wired (see ‘D’ in
Fig. 6 & 7
) as
appropriate.
Note
: If using a door switch, an additional 2 core
(low Voltage) cable is required between the door switch and the
air barriers.
If the unit is to be connected to a Building Energy Management
System, connections to be made (see ‘S0, S1, S2’ in
Fig. 6 & 7
)
as appropriate.
Ensure that the air curtain is securely fastened in position and
that the supply cables are fi rmly clamped before operating the
appliance.
Water connection
Models designed for use in conjunction with a low pressure hot
water supply should be individually connected (in a parallel circuit)
to the fl ow and return pipe-work.
Connections (see ‘a’ in
Fig. 8
) and isolation valves (see ‘b’ in
Fig.
8
) should be fi tted as close to the air curtain connection points as
possible. Care should be taken to release as much air as possible
to prevent air locks.
Maximum water supply conditions are 100ºC and 10 bar
(1.03MPa).
Switch Panel Installation
The backing box (standard double gang) should be rebated
into a suitable wall. The box should be fi tted so that the switch panel
will be fl ush with the wall. Suitable conduit should be used where
applicable to carry the cable between the heater and the switch.
An RJ45 Patch cable with straight through connections should be
used to connect the switch panel to the appliance PCB.
Warning:
Ensure cable is secure and the cable path does not
come into contact with heater element or other moving parts. Test
all switch settings once installation is complete.
Electrically heated variants
Operation using switch box - CABC5
Switch on electrical supply to the air curtain. Rotate the switch to
the desired heat setting. Settings available are;
OFF
Low
Fan
Low Fan with Low Heat
High
Fan
High Fan with Low Heat
High Fan with Full Heat
The rocker (auto / manual) switch allows for manual over-ride of
a door switch if fi tted. Manual allows the appliance to run at the
desired setting, while Auto provides an energy saving feature by
shutting down the appliance while the door is closed.
The unit should always be switched OFF using the switch box
control, and not by mains power supply interruption.
When the unit is switched off (via the switch box) the fan will run
on for 1 minute without heat to discharge any residual energy from
the heating elements.
When fi rst turned on the control will run through a system check.
The selected settings will be reached and maintained after a 30
second period.
Door switch control (Electric models)
By including a door switch in the circuit (as per ‘D’ in
Fig. 6
or
Fig.
7
) the air curtain will respond to door openings as follows:
(1) Door opening will energise the air curtain at the set conditions
(switch box settings).
(2) On door closure operation will continue at the set conditions
for a further 1 minute.
(3) Between 1 minute and 2 minutes from door closure, set back
operation, ½ heat (if heat selected) and ½ fan will activate.
(4) Between 2 minutes and 3 minutes, the fan only (½ speed) shut
down cycle will be engaged.
(5) After 3 minutes, the air curtain will return to a dormant state
until the door is re-opened.
If the door re-opens during this 3 minute run on cycle, the
process will restart at (1).
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