Refrigerant Connections - CTA HCAT TE 0011 Installation - Benutzungs- Und Wartungsanleitung

INSTALLATION
CHOICE OF INSTALLATION SITE
Before installing the unit, agree the site where it will be
installed with the customer, taking the following points into
consideration:
- 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 entering the unit and discharged by the fans is free to
circulate.
- The unit must be installed in a space designed to house
technical installations dimensioned according to legisla-
tion 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
positioning of the lifting slings and safety pins in the special
holes in the bed plate of the unit.To avoid the slings damag-

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
connecting the HED-HCAT TE and HEN-HCAN TE
REFRIGERANT CIRCUIT HCAT TE
1
1 Fan
2 Heat exchanger
3 Liquid receiver (HCAT TE 0011÷0061)
4 3-way valve (gas side)
5 Flared connection
6 English 07/03
10
2
3
6 Flared connection
7 3-way valve (liquid side)
8 Filter
9 Low pressure switch
10 Pressure tap
ing the unit, place protection between the slings and the
unit. Place either a layer of rubber (min. thickness 10 mm) or
vibration damper feet (optional) between the bed plate and
support surface. Fix the unit, making sure it is level and that
there is easy access to refrigerant and electrical compo-
nents. If the site is exposed to strong winds, fix the unit ade-
quately using tie rods if necessary.You are advised to avoid:
- Installing the unit in pits and/or air vents.
- Obstacles or barriers which could cause the air dis-
charged 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 res-
onance.
- Installation in corners where dust, leaves or other mate-
rials 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.
units, the maximum admissible length and the maximum differ-
ence in level, both with the condenser unit located at a lower
level than the terminal unit and vice versa. For greater dis-
tances, the diameter must be calculated. Use only copper pip-
ing 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
HCAT TE - HCAN TE