© Danfoss | DCS (CC) | 2022.11
AN433834055224en-010101 | 1
1 – Introduction
These instructions pertain to Optyma
Commercial D48 Version used for
refrigeration systems. They provide
necessary information regarding safety and
proper usage of this product.
The condensing unit includes following:
• Liquid Receiver
• Filter Drier
• Sight Glass
• Low / High Pressure Switch - KP15
• Suction Filter
• Oil Separator
• Solenoid Valve
• Crankcase Heater
• Quick connections - Suction / Discharge
Valve
• Electrical Box - IP65 with LED signal
• 2 X Fan Speed Controler
• Housing
2 – Handling and storage
• It is recommended not to open the
packaging before the unit is at the final
place for installation.
• Handle the unit with care. The packaging
allows for the use of a forklift or pallet jack.
Use appropriate and safe lifting equipment.
• Store and transport the unit in an upright
position.
• Don’t expose the packaging to rain or
corrosive atmosphere.
• Store the unit between -35°C and 50°C.
• After unpacking, check that the unit is
complete and undamaged.
3 – Installation precautions
Do not braze as long the condensing unit
is under pressure.
Never place the unit in a flammable
atmosphere.
IPlace the unit in such a way that it is not
blocking or hindering walking areas, doors,
windows or similar.
• Ensure adequate space around the unit for
air circulation and to open doors.
• Avoid installing the unit in locations which
are daily exposed to direct sunshine for
longer periods.
• Avoid installing the unit in aggressive and
dusty environments.
• Ensure a foundation with horizontal surface
(less than 3° slope), strong and stable
enough to carry the entire unit weight and
to eliminate vibrations and interference.
• The unit ambient temperature may not
exceed 50°C during off cycle.
• Ensure that the power supply corresponds
to the unit characteristics (see nameplate).
• When installing units for HFC refrigerants,
use equipment specifically reserved for
HFC refrigerants which was never used for
CFC or HCFC refrigerants.
• Use clean and dehydrated refrigeration-
grade copper tubes and silver alloy brazing
material.
• Use clean and dehydrated system
components.
• The suction piping connected to
the compressor must be flexible in
3 dimensions to dampen vibrations.
Furthermore, piping has to be done in such
a way that oil return for the compressor is
ensured and the risk of liquid slug over in
compressor is eliminated.
4 – Installation
• The unit must be securely installed on a
stable and rigid support and fixed from the
beginning.
• It is recommended to install the unit on
rubber grommets or vibration dampers
(not supplied).
• Slowly release the nitrogen holding charge
through the schrader port.
• Connect the unit to the system as soon as
possible to avoid oil contamination from
ambient moisture.
• Avoid material entering into the system
while cutting tubes. Never drill holes where
burrs cannot be removed.
• Braze with great care using state-of-the-art
technique and vent piping with nitrogen
gas flow.
• Connect the required safety and control
devices. When the schrader port is used for
this, remove the internal valve.
• It is recommended to insulate the suction
pipe up to the compressor inlet with 19mm
thick insulation.
Instructions
Optyma™ Commercial D48 Version
OP-HGZXXXD48E
OP-HGZ
080 D48 E
1 2 3
4
5 6
7
1
Application
H = HBP/Universal
2
Design
G = Condensing unit with hermetic compressor, two fans
3
Compressor Oil
Z = Polyolester oil (POE) 175PZ, Reciprocating Compressor MTZ
4
Compressor type and model
MTZ Series for hermetic MBP
5
Platform
D = Micro-channel technology
6
Product configuration
48
7
Electrical code:
E = 400V 3Ph 50Hz Comp. & 230V 1Ph Fan Motor
The condensing unit must only be used for its designed purpose(s) and
within its scope of application.
Under all circumstances, the EN378 (or other applicable local safety
regulation) requirements must be fulfilled.
The condensing unit is delivered under nitro- gen gas pressure (1 bar)
and hence it cannot be connected as it is; refer to the «installation» section
for further details.
The condensing unit must be handled with caution in the vertical posi-
tion (maximum offset from the vertical: 15°)
Designation system
Warnings
