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3. 3.
Charging
Charging points
4. 4.
Thermal expansion
Thermal
5. 5.
Fully charged
Fully
charged unit
6. 6.
Oil equalizing
Oil
equalizing lines
Optional Features
Optional Features
）
）
A A
Construction options:
Construction options:
1. 1.
Metal
Metal mesh
mesh on
2. 2.
Optional
Optional supply/return
3. 3.
Evaporator with treated
Evaporator wi
4. 4.
"25mm (1")"
"25mm
5. 5.
Economizer
Economizer option
If this option is installed in the
If this option is installed in the unit the unit has the
it to exploit the external environmental condition as much as possible, since it avoids turning on the heaters and
it to exploit the external environmental condition as much as possible, since it avoids turning on the heaters and
the compressors. This function can be achieved by controlling the opening/closing of the external air damper.
the compressors. This function can be achieved by controlling the opening/closing of the external air damper.
With reference to the difference between the outdoor air temperature(std)/enthalpy and the indoor air
With reference to the difference between the outdoor air temperature(std)/enthalpy and the indoor air
temperature(std)/enthalpy.
temperature(std)/enthalpy.
6. 6.
High Static
High S
7. 7.
Upgraded
Upgraded Evaporator
）
）
B B
Electrical options:
Electrical options:
1. 1.
Power
Power circuit
circuit breaker
2. 2.
Main power
Main power molded cas
3. 3.
Low
Low ambient
ambient control:
The refrigeration systems in all
The refrigeration systems in all unit are
permit the unit to operate in low ambient condition a head pressure control can be Installed either by:
permit the unit to operate in low ambient condition a head pressure control can be Installed either by:
ON/OFF condenser
ON/OFF condenser fans sequencing (f
3 speed of
3 speed of the condenser
4. 4.
Earth
Earth leakage
leakage relay
5. 5.
Earth
Earth leakage
leakage relay
6. 6.
External overload
External
7. 7.
Power factor
Power
factor correction
8. 8.
Automatic
Automatic or man
9. 9.
Building automation sy
Building aut
card which can communicate with other devices using the serial communication port.
card which can communicate with other devices using the
10.
10. Volt
Voltage monitor controller (phase sequence relay) for moni
age monitor controller (phase sequence relay) for monitoring the main incoming power supply for the unit which
provides protection from single-phasing, under-voltage, phase-voltage imbalance and phase-non-sequence
provides protection from single-phasing, under-voltage, phase-voltage imbalance and phase-non-sequence
Refrigeration options:
Refrigeration options:
1. 1.
Heat pump packaged
Heat pump
2. 2.
Pressure
Pressure gauges
3. 3.
Hot gas bypass
Hot gas
cycling")
cycling")
4. 4.
Extra refrigerant accessories
Extra refrigerant
separators etc..
separators etc..
5. 5.
Solenoid
Solenoid valve
6. 6.
High
High and
and low
Refrigerant Piping Diagram (Sample only)
Refrigerant Piping Diagram (Sample
points pin
pin valve.
valve.
expansion valve
valve (for
(for mod.
mod. 72
unit with
with refrigerant.
refrigerant.
lines installed
installed between
between parallel
on condenser
condenser section.
section.
supply/return air
air configurations,
configurations, optional
th treated anti-corrosion
anti-corrosion protection f
(1")" or or "50mm(2")"
"50mm(2")" thick
thick flat
flat filter
option with
with fresh,
fresh, return
return and exhaust
unit the unit has the ability to work with free cooling or free heating
tatic condenser fan
condenser fan option wi
option will al
Evaporator Fan
Fan Motor
Motor Drives.
breaker for
for each
each motor.
motor.
molded case circuit
e circuit breaker for
breaker for the whole
control:
unit are inherently designed to operate
fans sequencing (for models with 2 c
the condenser fan motor
fan motor. .
relay for
for each
each compressor
compressor. .
relay for
for the
the whole
whole unit.
unit.
overload relay
relay for
for each
each motor.
motor.
correction capacitor
capacitor. .
or manual provi
ual provision f
sion for pum
or pump down
omation system interf
stem interface. Int
ace. Interfacing wi
packaged unit with
unit with 4-way revers
4-way reversing valve,
gauges for
for each
each refrigeration
refrigeration circuit
bypass (where low-local
(where low-local situation o
situation occurs and
accessories such as s
such as suction accu
valve for
for heat
heat pump
pump mode.
mode.
low pressure
pressure controller
controller for
for models
models
72 and
and above
above only).
only).
parallel installed
installed compressors
compressors
optional bottom
bottom supply and
supply and return
protection for coils
or coils (blue fins)
(blue fins)for copper/alum
filter. .
and exhaust air
air dampers
dampers with
ability to work with free cooling or free heating mode allowing
ll also required
so required a sealed
a sealed + drain
Drives.
the whole unit (can
unit (can also be
also be available wit
inherently designed to operate efficiently
or models with 2 condenser fans).
ondenser fans).
p down operation
operation of of each c
each compressor
ompressor stop.
erfacing with other
th other building managem
building management sys
serial communication port.
toring the main incoming power supply for the unit which
ing valve, suction
suction accumulator
accumulator is a
circuit (high/low
(high/low pressure
pressure gauges).
gauges).
ccurs and where it
where it is neces
is necessary avoi
uction accumulators (for c
mulators (for cooling units on
only)
return type.
type.
for copper/aluminum coils
inum coils only
with cowl.
cowl.
+ drain condensing section.
condensing section.
available with an ex
h an external handle
ternal handle as an
efficiently, without extra
, without extra controls or modifications. T
controls or modifications. To o
stop.
ent systems c
tems can be
an be Achieved
is a standard
standard feature in
feature in heat pump
sary avoid low suc
d low suction press
tion pressure and "c
ooling units only), refrigerant li
ly), refrigerant liquid receivers,
only. .
mode allowing
as an option).
option).
5 5
Achieved by an
by an optional
optional
heat pump option.
option.
ure and "compressor
ompressor
quid receivers, oil
oil
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