Frico Thermozone AD 300 W Mode D'emploi page 27

Thermozone AD300 W, AD400 W
GB
Water connection
The air-curtain has an aluminium inned heating coil (in
distance 2 mm) with copper tubes suitable for connec-
tion to a closed water heating system.
The heating coil must not be connected to a mains pres-
sure water system or an open water system.
The water pipes (DN20 - 3/4" BSP-F, outside thread)
are connected at the left hand side (when viewed from
inside the building) on top of the unit. (See details on
page 2)
The installation should be carried out by a certiied
installer.
NOTE: Care must be taken when connecting the pipes.
Use a wrench or similar to hold the air-curtain connec-
tions to prevent straining of the pipes and subsequent
water leakage during connection to water supply pipe-
work.
A bleed valve should be connected at a high point in the
pipe system and all air bled during commissioning of the
air-curtain.
It is also recommended that a drain valve is itted in
the supply pipe-work. This should be mounted on the
outside of the AD unit. Air-vent and drain valves are not
included in the heating coil.
Filter
The heating coil is protected by an air ilter which covers
the coil face.
Overheating
All motors are equipped with an integral thermal safety
cut-out. This will operate, stopping the air-curtain should
the motor temperature rise too high.
The cut-out will automatically reset when the motor
temperature has returned to within the motor's operating
limits.
Maintenance
To ensure performance and reliability of the air curtain,
inspection and cleaning should be carried out regularly.
Filter inspection should be carried out at least twice a
year.
Before removing any panels, the power supply must
always irst be disconnected.
A clogged ilter will considerably reduce the eficiency of
the air curtain.
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Changing ilter
1 Disconnect the power supply.
2 Remove the front plate by pressing a
screwdriver or similar in to the two holes
(Ø 5mm) underneath the edge of the front
plate. Press until it clicks and the front plate can
be opened and removed.
3 Remove the ilter, vacuum-clean or wash with
mild detergent. (Dry thoroughly before reitting)
Change the ilter if damaged or very dusty.
The fans, motors and other components are mainte-
nance free. Inspection and cleaning (if needed) should
however be carried out at least once a year.
Trouble shooting
If fans stand still, check the following:
1 Power supply; check fuses and circuit-breaker
(if any) that starts and stops the unit.
2 That the air low selector is correctly set.
3 That the position limit switch is working (if any).
If the error cannot be ixed, please contact a qualiied
service technician.
If there is no heat, check the following:
1 That hot water runs through to the water battery.
(Check circulation pump, if any.)
2 That when heat is needed; check thermostat settings
and real temperature.
If error cannot be ixed, please contact a qualiied
service technician.
Security
Do not cover surfaces of the air curtain or obstruct air
intake grille, as this can cause excessive tempera-
tures that can be hazardous and may cause safety
cut-outs to operate.