Dimplex CAB10ER Manual do utilizador - Página 7
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All Models - A suitable cable (CAT5 or equivalent) 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 plugged into the circuit board as
shown in Fig. 4A & 4B. If the unit is to be operated in conjunction
with a door switch, a normally open switch should be wired as
per 'D' in Fig. 8 & 9 as appropriate.
Note: If using a door switch, an additional 2 core (low voltage)
cable is required between the door switch and the air curtains.
If the unit is to be connected to a Building Energy Management
System, connections are made as per 'S0, S1, & S2' in Fig. 8 &
9 as appropriate.
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. 3) are: ½" BSPT (CAB series) and isolation valves (see 'b'
in Fig. 3) should be fi tted as close to the air curtain connection
points as possible. For commissioning, air bleed valves (see 'c'
in Fig. 3) are fi tted to the coil, which can be accessed by removal
of the ceiling tile - see Fig. 2.
Maximum water supply conditions are 125ºC and 8 bar
(0.8MPa).
To aid installation, the water coil connections may be moved to
either side of the appliance. By removing the water coil and
appropriate knockouts the water coil can then be re-inserted into
the required orientation. This procedure should be carried out
before mounting the appliance.
Switch Panel Installation
The backing box (standard double gang) should be surface
mounted onto a suitable wall, alternatively a recessed box
can be used (not supplied). Suitable conduit should be used
where applicable to carry the cable between the heater and the
switch. A CAT5 computer network 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.
Note: If using a door switch, an additional 2 core (low voltage)
cable is required between the door switch and the air curtains.
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.
Thermostatic control
A capillary type thermostat is factory fi tted within the unit, as per
'C' in Fig. 8, giving a selection scale of 0-40ºC. When the ther-
mostat operates, the power output will reduce depending on the
switch setting.
- Fan only - No effect
- Half Heat - Heater will reduce to Fan only
- Full Heat - Heater will reduce to Half Heat
To override the thermostat, fi rst Isolate the supply to the heater.
Remove the connection on terminal '1' of the thermostat and
reconnect it onto the piggy back connection on terminal 'C'.
Door switch control (Electric models)
By including a door switch in the circuit (as per 'D' in Fig. 8) the
air curtain will respond to door openings as follows:
(1)
Door opening will energise the air curtain at the set condi-
tions (switch box settings).
(2)
On door closure operation will continue at the set condi-
tions 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).
Thermal Safety cut outs
The power supply to the heating elements will be interrupted if
one or a combination of the following abnormal events occur:
1.
Air inlet or outlet grilles are obstructed.
2.
Internal ventilation is impaired due to build up of dust and
fl uff.
3.
Blower unit stalls.
Before resetting the thermal safety cut-outs you must turn
the power OFF. Unlock the grille by moving the two sliders
into the open position 'x' as shown in Fig. 2A, using a small
screw driveror other suitable tool. With the grille partially open
disconnect the safety cord to allow the grille to fully open. Then
access the reset buttons as shown in 'y' in Fig. 2B. Before
re-setting the reason for activation must be determined and
corrective action taken.
Low Pressure Hot Water (LPHW) heated
Ambient (fan only) variants
Operation using switch box - CABC6
Switch on electrical supply to the air curtain. Rotate the switch to
the desired heat setting. Settings available are;
OFF
Low Fan
High Fan
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
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.