Danfoss OPTYMA Plus OP-LPQM Instructions Manual page 3

Instructions
• Installer need to take care of where to blow the
leaked refrigerant. Danfoss recommended to
blow refrigerant away form condensing unit.
• Recommended to change PRV when after
discharge, Changing refrigerant
• Valves must be installed vertically or Horizontally,
but ensure PRV to be fitted above system's liquid
level.
• Ensure refrigerant is released safely to
atmosphere directly.
• Incase of hazard, additional spare kit has
been designed in order to collect the released
refrigerant. Kit should be installation with proper
piping routing for discharge of refrigerant safely.
(See picture below)
• PRV should not be installed on service valve.
• Replace PRV after clean out of system or bared
out.
• No Detachable joints and valves should not
accessible to public. All brazing joints should
comply with EN 14276-2 and other permanent
joints should comply with EN-16084.
4 – Installation
• The installation in which the condensing unit is
installed must comply to pressure Equipment
Directive (PED) 2014/68/EU. The condensing unit
itself is not a "unit" in the scope this directive.
• It is recommended to install the unit on rubber
grommets or vibration dampers (not supplied).
• It is possible to stack units on top of each other.
Unit
Housing 1
(Code no. 114X31-- or 114X41--)
Housing 2
(Code no. 114X32-- or 114X42--)
Housing 3
(Code no. 114X33-- or 114X43--)
Housing 4
(Code no. 114X34-- or 114X44--)
• When stacking, the topmost unit must be
secured to the wall, as shown in picture 2.
• 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
© Danfoss | Climate Solutions | 2022.02
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 19 mm thick
insulation.
• Copper piping material should comply with
EN12735-1. And all pipe joints should comply
with EN14276-2
the • At filed installation, support to added according
to size and weight. Recommended maximum
spacing for pipe support as per EN12735-1 &
EN12735-2
• Connecting pipes shall be made before opening
the valves to permit refrigerant to flow between
the refrigerating system parts.
5 – Leak detection
Never pressurize the circuit with
oxygen or dry air. This could cause
fire or explosion.
• Do not use dye for leak detection.
• Perform a leak detection test on the complete
system.
• The maximum test pressure is 31*
• When a leak is discovered, repair the leak and
repeat the leak detection.
* ) 25 bar for OP-.......AJ.... & OP-.......FH.... models
6 – Vacuum dehydration
• Never use the compressor to evacuate the
system.
• Connect a vacuum pump to both the LP & HP
sides.
• Pull down the system under a vacuum of 500 µm
Hg (0.67 mbar) absolute.
• Do not use a megohmmeter nor apply power to
the compressor while it is under vacuum as this
may cause internal damage.
Maximum
7 – Electrical connections
stacking
• Switch off and isolate the main power supply.
3
• Ensure that power supply can not be switched on
2
during installation.
• All electrical components must be selected as
2
per local standards and unit requirements.
• Refer to wiring diagram for electrical connections
2
details.
• Ensure that the power supply corresponds to the
unit characteristics and that the power supply
is stable (nominal voltage ±10% and nominal
frequency ±2,5 Hz).
• Dimension the power supply cables according to
unit data for voltage and current.
• Protect the power supply and ensure correct
earthing.
• Make the power supply according to local
standards and legal requirements.
• The unit is equipped with an electronic controller.
Refer to Manual 118U3808 for details.
• P02 version models (OP-xxxxxxxxxP02E) are
equipped with Electronic circuit board (Module B
Plus). Refer to section " Module B Plus User Guide
" of this manual.
• The unit is equipped with a main switch with
overload protection. The overload protection is
factory preset but it is recommended to check
the value before taking the unit in operation. The
value for the overload protection can be found in
the wiring diagram in the front door of the unit.
• The unit is equipped with high and low pressure
switches, which directly cut the power supply to
the compressor in case of activation. Parameters
for high and low pressure cut outs are preset
in the controller, adapted to the compressor
installed in the unit.
• P05 models are also equipped with phase
sequence relay to protect the unit against phase
loss/sequence/ asymmetry and under-/over-
voltage.
For units with a 3-phase scroll compressor (OP-
MPXMxxxxxxxxE), correct phase sequence for
compressor rotation direction shall be observed.
• Determine the phase sequence by using a phase
bar. meter in order to establish the phase orders of
)
line phases L1, L2 and L3.
• Connect line phases L1, L2 and L3 to main switch
terminals T1, T2 and T3 respectively.
8 – Safety
Electrical box door should be in
closed condition before connecting to
power supply.
Discharge tube temperature will
go upto 120°C during unit running
condition.
Recommended to install PRV inside
unit and release of refrigerant should
routed to atmosphere directly.
Fusible Plug is not installed in unit, it is replaced
with adapter blanking plug.
Unit has liquid receiver with an Adapter Plug with
3/8" NPT connection. installer/end user can select
various options as mentioned in EN378-2 : 2016
Article § 6.2.2.3
• The unit/installation into which the condensing
unit is mounted/integrated, must be in
accordance with the PED.
• Beware of extremely hot and cold components.
• Beware of moving components. Power supply
should be disconnected while servicing.
• Compressor has Internal overload protector (OLP).
Its will protect compressor pressure going
beyond 32 bar pressure.
• No valves and detachable joints shall be located
118A5382A - AN18658643414604-001701 | 3