Carrier 30PA, Installation, Operation And Maintenance Instructions

Page: 6 / 36

Ductable air-cooled scroll
chillers and heat pumps
6
4. A
VAILABLE CONFIGURATIONS
According to the air supply:
• Assembly M00
HORIZONTAL air supply.
• Assembly M01
VERTICAL air supply.
According to the type of supply fan:
• STD version (Standard):
Centrifugal fan coupling by pulleys and belts.
• HEE version (High Energy Ef
fi
ciency):
Variable speed electronic plug-fan.
M00 M01 STD HEE
These units work with refrigerant gas
R-410A
.
3. S
AFETY ADVICE
To avoid any risk of accident during installation, commissioning or
maintenance, it is obligatory to take into consideration the following
speci
fi
cations for the units: refrigerated circuits under pressure, refrigerant
presence, electrical voltage presence and implantation place.
Because of all of this, only quali
fi
ed and experienced personnel can
perform maintenance tasks or unit repairs.
It is required to follow the recommendations and instructions
in the maintenance brochures, the labels, and the speci
fi
c
instructions.
It is necessary to comply with the norms and regulations
in effect. It is recommended to consult the competent
authorities regarding the applicable regulations for users
of units or components under pressure. The characteristics
of these units or components are included on the plates of
characteristics or in the regulatory documentation provided
with the product.
In case of a leak:
- Toxicity: According to ASHRAE 34, R-410A belongs to the A1/A1 group,
i.e. with high safety both in the mix and also in the case of a leak.
- Although it is not toxic, in case of a leak to atmospheric pressure the
liquid phase evaporates. The resulting vapours are heavier than air
and can displace the technician local air. In case of an accidental
discharge in a closed enclosure, fans must be used to eliminate said
vapours.
- Although the R-410A is not
fl
ammable, when in contact with a
fl
ame
o hot spot it can decompose in
fl
uorhydric acid HF and
fl
uophosgene
COF
2
highly toxic and corrosive.
- To detect leaks, an electronic leak detector, an ultraviolet lamp or
soapy water must be used. Flame detectors do not help.
Important
: Immediately repair any refrigerant leak, using
a recovery unit speci
fi
c for R-410A that avoids a possible
mixture of refrigerants and/or oils.
The compressor and line surfaces can reach temperatures
above 100ºC causing burns to the body. In the same fashion,
under certain conditions these surfaces can reach very cold
temperatures that can cause freezing risks.
Use safety goggles and gloves on the job. Be careful with
sharp parts or elements in the unit.
V-220005
V-220004
Caution:
Before intervening in the unit, verify that the main
power to the unit is cut off. An electric shock can cause
personal damage.
Refrigerant leaks:
A periodical check must be performed for refrigerant gas leaks as
per Regulation (CE) Nº517/2014 over
certain greenhouse effect
fl
uoride gases. Please, consult the frequency of checks in chapter
of “Maintenance”.
Components of the R-410A R-32 R-125
Chemical formula CH2F2 CHF2CF3
Weight ratio
50% 50%
Unitary global warming potential (GWP)
675 3.500
Global warming potential (GWP) 2.088
Note: In order to recycle these units follow the stipulations
of Directive 2012/19/EU on Waste electrical and electronic
equipment (WEEE).