Johnson Controls York VCH 20A, Technical Information

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Size
V: Vitality Series
I: Indoor
R: Reversible
General Information
General description
The VITALITY series models are reversible air-air units, with
centrifugal fans both in the indoor as well as the outdoor
units.
The VCH unit includes compressor, condensing unit, centrifu-
gal fan, controls and the DPC-1 thermostat. The VIR indoor
units include evaporating coil, air filter and centrifugal fan. If
necessary, the standard version supplied can be modified at
the job site so as to achieve a compact unit.
The unit can be located both indoors as well as outdoors
since it is protected to withstand outdoor environmental
conditions, plus the fans are of the centrifugal type and thus
accept ducts.
Supplied completely equipped and factory tested.
Designed to achieve significant energy savings and a long
operating life.
Commissioning and automatic temperature control are car-
ried out by means of the 24-volt ambient thermostat.
Nomenclature
Technical Specifications
Mechanical specifications
Compressor
Of the vertical leak-tight type mounted on antivibratory sup-
ports, sp ecially designed for heat pump units with over sizing
of mechanical components low consumption motor.
The VCH 20A, 25A, 30A and 40A units have one single
compressor; the VCH 45A, 60A, 75A and 90A units have two
compressors with two independent circuits.
Supplied with a POE oil charge that avoids foaming, and an
oil heating element.
Compressor resistance
Keeps the oil in the sump hot to facilitate start-ups and avoid
oil leaving the compressor.
Suction accumulator
Coupled to the suction pipe of the compressor, protects same
against slugging.
Coils
Of a large surface, made of copper tubing and aluminium fins.
Located inside the cabinet, these are totally protected against
damage during transportation or installation. As an option,
these can be supplied with Blue Fin or copper fins.
Indoor fan (VIR 25A)
The unit is equipped with a centrifugal fan driven by an in-
dependent motor and a belt drive.
Indoor fan (VIR 40A, 45A, 60A, 75A and 90A) and outdoor
fan (VCH 20A, 25A, 30A and 40A)
The units are equipped with two centrifugal fans with a com-
mon shaft and a belt drive, driven by one single motor and
coupled to one single plenum.
Outdoor fan (VCH 45A, 60A, 75A and 90A)
The unit is equipped with two independent centrifugal fans.
Each one is driven by an independent motor and coupled to
one single plenum.
The fan motor is belt driven.
These fans have sufficient available pressure for installing
ducts and optional accessories.
Cooling circuit
Made of welded copper tubing and equipped with access
connections to the high and low pressure sides. Equipped
with cut-off valves on the suction side. These are used at the
factory to protect the compressor during the pressure test at
45 bar that all units are subject to obligatorily.
Refrigerant
The VCH and VIR units are supplied with the connections
ready for welding. The refrigerant charge should be done
fully at the job site. See refrigerant charges in the physical
data table.
Control panel
Accessible directly from the outside by means of 1/4 turn
locks. Includes: connecting strip, protectors, electronic board
and probes, power supply contactors, operating relay, phase
control relay and transformer. Complies with the European
standards in force. Degree of protection, IP44.
VIR 20 A A
Version A
Fins A: Aluminium
B: Blue fin
C: Copper
Size
V: Vitality Series
C: Air - air ducts
H: Heat pump
VCH 20 A A
Version A
Fins A: Aluminium
B: Blue fin
C: Copper