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Instructions
EN60335-1, EN60204 or local applicable standard
and unit requirement.
• Refer to wiring diagram for electrical connections
details.
• All electrical components must be qualified
to use A2L refrigerants and "not source of
ignition".
• Ensure that the power supply corresponds to the
unit characteristics and that the power supply is
stable (Allowable voltage tolerance ±10% and
Allowable frequency tolerance ±2,5 Hz).
• The power supply cables must be according
to unit data for voltage, current and ambient
condition. Refer Nameplate for voltage and
current information.
• Protect the power supply cable 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.
• The unit is equipped with a main switch with
overload protection and short circuit 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 cuts 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.
• P02 version models (OP-xxxxxxxxxP02E) are
equipped with Electronic circuit board to operate
the Liquid injection Electronic Expansion Valve
(Module B Plus). Refer to section "Module B Plus
User Guide" of this manual.
• Optyma™
Plus
condensing
frequency need to be limited for reciprocating
compressors.
- Without starting capacitor 5 starts per hour
maximum.
- With starting capacitor 10 starts per hour
maximum.
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.
Optyma plus unit codes 114X34-- and
114X44--, High pressure switch fitted
after receiver, If the Rotolock valves
are closed during the pump down
cycle, the HP switch will not trip.
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.
• As per EU F-gas regulation, R1234yf, R454C
& R455A are considered as A2L refrigerant.
4 | AN37261897352601-010401 - 118A2177D
Optyma™ Plus units are qualified with R1234yf,
R454C & R455A. All precaution and safety
measure to be taken care before and after
installation.
• All components should be compatible to use
with specified refrigerants according to Optyma™
Plus condensing units codes. Refer Annex A
• In order to avoid electric arc between hermetic
connector pins, compressor must not start or
electrical tests such as dielectric strength must
not be performed while the refrigerating system
is under vacuum.
• Optyma™ Plus condensing units have pre
ventilation via condenser fan prior to compressor
starting (30 seconds).
• Danfoss always recommend to main IP54
electrical box. In case of any damage to rubber
gasket (shown below), customer should replace
immediately.
• Compressor has Internal overload protector (OLP).
Its will protect compressor pressure going
beyond 32 bar pressure.
• No valves and detachable joints shall be located
in areas accessible to the general public except
when they comply with EN 16084
• Refrigerant piping shall be protected or enclosed
to avoid damage.
unit
starting
• Field piping should be installed such that it will
be free from corrosive or salty environment to
avoid corrosion in copper /Aluminum piping.
• In case of fire incidence, pressure increases due
to increasing in temperature at receiver. Hence it
is very important to install the PRV.
• For codes 114X34-- and 114X44--, Door limiting
switch provided for safety purpose. Don't
remove or change the connection.
9 – Filling the system
• Never start the compressor under vacuum. Keep
the compressor switched off.
• Use only the refrigerant for which the unit is
designed for.
• Before filling the refrigerant into the Optyma™
Plus condensing unit wear appropriate PPEs
(Personal Protective Equipments).
• If additional oil is required please refer to the
compressors label for type of oil. Check the
Compressor application guideline for minimum
oil level limit before refilling.
• For glide refrigerants such as R454C, R455A,
R448A, R449A, R452A use liquid valve in the
refrigerant cylinder to charge.
• Fill the refrigerant in liquid phase into the
condenser or liquid receiver. Ensure a slow
charging of the system to 4 – 5 bar for R404A/
R507,R407A,R407F,R448A/R449A,R452A, R454C,
R455A and approx. 2 bar for R134a, R513A &
R1234yf.
• The remaining charge is done until the
installation has reached a level of stable nominal
condition during operation.
• Never leave the filling cylinder connected to the
circuit.
• Do not put liquid refrigerant through suction
line.
• It is not allowed to mix additives with the oil and/
or refrigerant.
• When charging A2L refrigerant make sure that
the charging area is well ventilated.
• The Liquid receiver is fitted with Rotolock Valve
for service purpose. As a factory setting, the valve
will be in completely OPEN position. During
maintenance and Pump down, the Valve must
be Rotated in Clockwise direction until it is in
completely CLOSED position.
• Suction, Liquid valves and Receiver Rotolock
valves as Schrader port for service operation like
Gas Charging, pressure measurement.
10 – Setting the electronic controller
Change
controller
o37 to 1 in case of SPPR (Supply
monitoring relay) retrofit. In case
you add the SPPR option to protect
the compressor please change the
setting o37 from 0 to 1
For
P02
version
xxxxxxxxxP02E),
the
are only 19= R404A / 40=R448A /
41=R449A / 51= R454C / 52 = R455A
in controller
Fluid
Refrigerant
Group
A2L
R455A & R454C
R404A/R507,
A1
R452A, R448A &
R449A
* Refer Optyma™ plus controller installation – User
manual (BC08728642552802)
• The unit is equipped with an electronic controller
which is factory programmed with parameters
for use with the actual unit. Refer to Manual
118U3808 for details.
• By default, the electronic controller display
shows the temperature value for the suction
pressure in °C. To show the temperature value for
the condensing pressure, push the lower button
Annex A; Picture 3.
• Remove controller terminal DI1 (room thermostat
input) to avoid any unwanted compressor start.
Put it back after settings been done.
The electronic controller is factory preset for
R404A / R449A / R452A / R134a / R454C / R1234yf
depending on the model of compressor mounted
and
application
(Refer
Optyma™
installation
manual
118U3808).
refrigerant is used, the refrigerant setting must be
changed.
• Push the upper button for a couple of seconds.
The column with parameter codes appears.
• Parameter r12 must be set to 0 before (software
main switch= off ).
• Push the upper or lower button to find parameter
code o30.
• Push the middle button until the value for this
parameter is shown.
• Push the upper or lower button to select the new
© Danfoss | Climate Solutions | 2023.05
parameter
models
(OP
o30
values
Parameter (o61*)
LLZ013 , LLZ015,
LLZ018, LLZ024 &
LLZ034 = 19
MLZ058 &
MLZ076 = 18
LLZ013 = 43
LLZ015 = 44
LLZ018 = 45
LLZ024 = 39
LLZ034 = 40
MLZ058 = 37
MLZ076 = 38
Controller
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