FRICO PA4225A - Инструкция по эксплуатации - Страница 34

PA3500/4200

33

GB  

Connecting the water coil (W)

The installation must be carried out by an 
authorised installer.

The water coil has copper tubes with 

aluminium fins and is 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.

Note that the unit shall be preceded by a 

regulating valve, see Frico valve kit. 

The water coil is connected on top of 

the unit (horizontal mounting) or on the 
reverse (vertical mounting) via connections 
DN20 (3/4’’), external thread. Flexible hoses 
available as an accessory, see accessories 
pages.

The connections to the heating coil must 

be equipped with shut off valves (included 
in Frico valve kits) to allow problem free 
removal.

A vent valve should be connected at a high 

point in the pipe system. Air valves are not 
included. When units are vertically mounted 
with water connection at the bottom venting 
of the battery is not possible, make sure the 
water heater is filled with water and no air 
remains, prior to startup.

Adjustment of the air curtain and air flow

The direction and speed of the air flow should 
be adjusted considering the load on the 
opening. Pressure forces affect the air stream 
and make it bend inwards into the premises 
(when the premises are heated and the 
outdoor air is cold).

The air stream should therefore be directed 

outwards to withstand the load. Generally 
speaking, the higher the load, the greater the 
angle that is needed.

Basic setting fan speed

The fan speed when the door is open is set 
using the speed control. Note that the air flow 
direction and speed may need fine adjustment 
depending on the loading of the door.

Filter (W)

The water coil is protected against dirt and 
blockage by an air filter which covers the 
coil face. In environments where the filter 

needs cleaning often, it is advisable to use an 
external intake filter (see accessories pages), 
which provides an easier maintenance, since 
the unit does not need to be opened.

Service, repairs and maintenance

For all service, repair and maintenance first 
carry out the following:
1.  Disconnect the power supply. 
2.  Loosen the screws and raise the front 

panel. The front is blocked in open 
position with the front hatch hook, see fig 
1A or removed completely, see fig. 1B. The 
service hatch is removed by loosening the 
screws.

3.  After service, repairs and maintenance 

fasten the service hatch and the front. 
When the front has been removed it it 
important to be sure it is firmly seated in 
the front locks again, see fig. 1B.

Maintenance

Unit with water heating:

The appliance filter should be cleaned 
regularly to ensure the air curtain effect and 
the heat emission from the device. How often 
depends on local circumstances. A clogged 
filter is not a risk, but the appliance function 
can fail.
1.  Disconnect the power.
2.  Loosen the screws and raise the front 

panel. The front is blocked in open 
position with the front hatch hook, see fig 
1A.

3.  Remove the filter and vacuum clean or 

wash it. If the filter is clogged or damaged, 
it may need to be changed.

All units:

Since fan motors and other components are 
maintenance free, no maintenance other than 
cleaning is necessary. The level of cleaning 
can vary depending on local conditions. 
Undertake cleaning at least twice a year. Inlet 
and exhaust grilles, impeller and elements 
can be vacuum cleaned or wiped using a 
damp cloth. Use a brush when vacuuming 
to prevent damaging sensitive parts. Avoid 
the use of strong alkaline or acidic cleaning 
agents.