Frico Thermozone AD300 W Serie Bedienungsanleitung Seite 13

Thermozone AD300 W, AD400 W
GB
Water connection
The air-curtain has an aluminium finned heating
coil (fin distance 2 mm) with copper tubes suitable
for connection to a closed water heating system.
The heating coil must not be connected to a mains
pressure water system or an open water system.
The water pipes (DN20 - 3/4" BSP-F, inside thread)
are connected at the right 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 certified
installer.
NOTE: Care must be taken when connecting the
pipes. Use a wrench or similar to hold the air-
curtain connections 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 fitted
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 filter 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 first be disconnected.
A clogged filter will considerably reduce the
efficiency of the air curtain.
2 8
Changing filter
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 filter, vacuum-clean or wash with
mild detergent. (Dry thoroughly before refitting)
Change the filter if damaged or very dusty.
The fans, motors and other components are
maintenance 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 flow selector is correctly set.
3 That the position limit switch is working (if any).
If the error cannot be fixed, please contact a
qualified 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 fixed, please contact a qualified
service technician.
Security
Do not cover surfaces of the air curtain or obstruct
air intake grille, as this can cause excessive
temperatures that can be hazardous and may
cause safety cut-outs to operate.