Frico Thermozone AG 4000 W Serie Manual Del Usuario página 18

GB
General Instructions
Read these instructions carefully before
installation and use. Keep this manual for
future reference.
The guarantee is only valid if the
Thermozone units are used in the manner
intended by the manufacturer and in
accordance with the Frico mounting and
operating instructions.
Application area
The AG4000W air curtain unit is intended
for installation above entrances and doors
from 2 metres up to 4 metres in height. The
efficiency of the air curtain(s) depends on the
air temperature, pressure differences across
the doorway and any wind pressure.
AG4000W is intended for connection to a
water heating system.
AG4000 is installed above the entrance.
Protection class IP23.
Operation
Air is drawn in at the front side of the unit
and blown out downwards towards the
entrance so that it shields the door opening
and minimizes heat loss. To get the best
curtain effect the unit must extend the full
width of the door opening.
The grille for directing supply air is
adjustable and is normally angled outwards to
achieve the best protection against incoming
cold air.
The airflow can be adjusted by use of the fan
speed selector.
The efficiency of the air curtain(s) depends
on the air temperature, pressure differences
across the doorway and any wind pressure.
NOTE! Negative pressure in the building
considerably reduces the efficiency of the air
curtain. The ventilation should therefore be
balanced!
Installation
The unit is installed horizontally with the
supply air grille downwards as close to the
door as possible, preferably against the wall
and immediately above the doorway. For the
18
AG 4000 W
Mounting and operating instructions
protection of wider doorways, several units
can be mounted next to each other. Ensure
that the service hatch is accessible and can be
fully opened.
The unit has 4 (6 on 2 metre models)
M8 fixed nuts on the upper side for ceiling
installation using threaded bars, or for
installation using wall brackets (accessories).
See dimension diagrams pages 2-3.
Electrical installation
Electrical connection may only be carried
out by an authorized electrician, and in
accordance with these instructions and the
applicable regulations.
1. The service hatch is opened by slackening
off the screws on the underside of the unit
as illustrated on page 3.
2. The unit is connected via one of the cable
glands in the upper side of the unit.
Different combinations for controlling fan
speed are available. See wiring diagrams
(pages 6-8).
Water coil connection
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.
The water pipes are connected to the
terminals with DN20 (3/4"), internal thread
on the upper side of the unit. Use a wrench
or similar to hold the air curtain connections
to prevent straining the pipes and subsequent
water leakage during connection to water
supply pipe-work.
The connections to the heating coil must be
equipped with shut off valves to allow problem
free removal. The highest point of the pipes
supplying the unit with water must also be
fitted with a bleed valve. The installation must
be carried out by an authorised installer.