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INSTALLATION
CHOICE OF INSTALLATION SITE
Before installing the unit, agree the site where it will be instal-
led with the customer, taking the following points into consi-
deration:
- check that the fixing points are adequate to support the
weight of the unit;
- pay scrupulous respect to safety distances between the unit
and other equipment or structures to ensure that air ente-
ring the unit and discharged by the fans is free to circulate;
- the unit must be installed in a space designed to house tech-
nical installations dimensioned according to legislation in
force in the country concerned and large enough to allow
access for maintenance.
POSITIONING
Before handling the unit, check the capacity of the lift equip-
ment used, respecting the instructions on the packaging.
To move the unit horizontally, make appropriate use of a lift
truck or similar, bearing in mind the weight distribution of the
unit.To lift the unit, insert tubes long enough to allow positio-
ning of the lifting slings and safety pins in the special holes in
the bed plate of the unit.
To avoid the slings damaging the unit, place protection
between the slings and the unit. Position the unit in the site
indicated by the customer. Place a layer of rubber (min. thick-
ness 10 mm) between the bed plate and support surface. Fix
the unit, making sure it is level and that there is easy access to
REFRIGERANT CONNECTIONS
REFRIGERANT PIPES
Sizing of the refrigerant pipes connecting the external con-
denser units and internal evaporator units is vital to guarantee
correct operation.
The table on pages 8 and 9 gives the diameters of pipes for con-
necting the HED-HCAT SE units, the maximum admissible
REFRIGERANT CIRCUIT HCAT SE
1
1
Fan
2
Heat exchanger
3
Liquid receiver
4
3-way valve (gas side)
5
Flared connection
10
2
3
6
Flared connection
7
3-way valve (liquid side)
8
Filter
9
Low pressure switch
10
Pressure tap
HED-HCAT SE FREE COOLING
refrigerant and electrical components. If the site is exposed to
strong winds, fix the unit adequately using tie rods if neces-
sary.
You are advised to avoid:
- Installing the unit in pits and/or air vents;
- obstacles or barriers which could cause the air discharged
to be recycled;
- installation in sites with an aggressive atmosphere;
- installation in confined spaces where the sound levels of the
appliance could be amplified by reverberation or resonance;
- installation in corners where dust, leaves or other materials
tend to collect.These could obstruct the passage of air, thus
reducing the efficiency of the unit;
- air discharged by the unit entering inhabited rooms through
doors or windows causing unpleasant conditions for the
inhabitants;
- air discharged by the unit being obstructed by a wind
blowing in the opposite direction;
- direct exposure of the unit to sunlight.
length and the maximum difference in level, both with the
condenser unit located at a lower level than the terminal unit
and vice versa.
For greater distances, the diameter must be calculated.
Use only copper piping for refrigerant use.
11
10
13
12
8
11
Compressor
12
Oil sump heater
13
High pressure switch
I
I
A
10
9
7
6
4
5
ENGLISH
17
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