11
Installation Instructions
Inspection
Upon reception, inspect the equipment and
notify both the carrier and the insurance
company, in writing, of any possible dam-
age.
Environmental protection
Eliminate packing in accordance
with the regulations in force on en-
vironmental conservation.
During installation and maintenance, keep
in mind that HFC-407C with POE oil are
used.
Safety
Installation and maintenance operations of
this air conditioning system should be car-
ried out by qualified and expert personnel
only. Regular maintenance operations
should be carried out, such as cleaning the
coils and air filters, so as to keep unit per-
formance at an optimum.
Caution
This unit should be installed and
used in accordance with:
- Low Voltage Electrotechnical Regulations.
- Safety Regulations for Cooling Plants and
Installations.
- Regulations on Pressure Equipment.
- Basic Construction Standards.
- Technical Construction Standards.
- Local ordinances.
Location (Figs. 1 to 3)
To be installed directly outdoors.
Place the unit on a consistent base and fas-
ten by means of bolts.
Outdoor units
These units are supplied with a R-407C re-
frigerant charge, which is sufficient for an
interconnecting tubing length of 5 meters.
Each unit includes a connecting elbow for
the condensed water drain (on heat pump
models only). Each compressor is equipped
with a sound insulated casing that keeps
noise levels to a minimum.
Installation
Unit installation comprises:
- Unit mounting.
- Refrigerant tubing connections.
- Condensed water drain connections on
heat pump units.
- Unit wiring.
Clearances, outdoor unit
A minimum clearance is required around the
units for the circulation of air and access for
maintenance servicing, as indicated in Gen-
eral Dimensions.
Interconnection of the units
When installing Split units, the cooling cir-
cuit should be completely leakproof after
mounting to insure there are no leaks.
This will help to obtain maximum perform-
ance with minimum consumption, and avoid
serious damage to the unit. This is an eco-
logical precaution as well.
Installing interconnecting tub-
ing
The length of the interconnecting tubing of
the units should be as short as possible.
Maximum admissible distances from the cir-
cuit and the standard tubing diameter are
shown on each one of the sections of the
corresponding indoor units.
Tubing to be used
Special care should be taken that the tub-
ing that interconnects the two units is kept
clean and dry, even prior to installation. It is
advisable to take into account the following
recommendations:
- Use copper refrigerant quality tubing only.
- Do not work outdoors when raining.
- The ends of the tubing should remain
closed during installation.
- Do not leave neither dryer filters nor the
compressor out in the open air.
- For welding use low melting point rods
with a 5% silver content, minimum.
- When welding and as long as the tubing
is hot, maintain a flow of dry nitrogen so
as to avoid internal rusting and scaling
that could cause contamination and ob-
structions.
- Do not use strippers on copper-copper
joints.
- Connection to units should be carried out
by means of the flaring method.
Insulation of refrigerant tubing
To avoid the effects of the outdoor tempera-
ture, radiation and condensation, the tub-
ing should be insulated. Minimum thickness
should be 8 mm.
Emptying and dehydrating
(Fig. 5)
Air does not act as a refrigerant since it can-
not be liquefied by the compressor. Any air
and humidity remaining in the cooling sys-
tem has undesirable effects, as indicated
below. Consequently, they should be elimi-
nated completely.
- High pressure increases.
- Consumed power supply increases.
- Equipment performance decreases.
- Water contained in the air could freeze
and block the capillaries.
- Water can cause corrosion of certain parts
of the circuit, and deterioration of the com-
pressor.
Process
In each circuit, with the valves closed:
1- Connect a vacuum pump and service
pressure gauges.
2- Carry out a vacuum of up to at least 200
microns.
3- Detect leaks.
GB
Limits of use
Heat DB
Heat
Cool
Operating cycle
Voltage limits
Cool
Operating cycle
Heat Cool WB
Minimum
Cool WB Heat DB
Intake air temperature to the outdoor coil, DB Intake air temperature to the indoor coil
Notes: WB = Wet bulb. DB = Dry bulb. (1) This equipment can operate at a temperature out of limits for a short period of time, until the occupied space is conditioned.
Maximum
198 254 18 -7 43 24 10
(1)
14 32
23
(1)
AVO-504, 505AG
198 254 18 -7 43 27 15
(1)
14 24
23
(1)
AVO-507, 510, 512, 516AG
Nom. 230 V
Maximum °C
Minimum °C
Maximum °C
Minimum °C
Model
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