Danfoss Optyma Plus OP-MPT Anleitung Seite 5

Instructions
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™ Controller
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
value: 3 = R134a.17 = R507. 19 = R404A. 20 =
R407C. 21 = R407A. 36 = R513A. 37 = R407F. 40 =
R448A. 41 = R449A. 42 = R452A. 39 = R1234yf. 51
= R454C. 52 = R455A
• Push the middle button to confirm the selected
value.
• Push the upper or lower button to find parame ter
code r84 (r84 = Maximum allowable discharge
temperature).
• Push the middle button, default maximum
discharge temperature is 125°C
• If customer want to increase the valve, push the
upper button to select the new value: 130°C.
Push middle button to confirm the selected
value.
• Maximum allowable discharge temperature (r84)
should not exceed 130 °C
The Optyma Plus 114X33YY and 114X43YY units
is equipped with EC Fan motor. Optyma Plus
controller parameter F17 is modified to 2 for this,
to activate the 0-10V fan speed control output. As a
factory setting, the max. fan speed parameter F19
is set to 80%, to limit fan speed and noise emissions
in residential areas. Installers can increase this max.
speed up to 100%, if the emitted noise is not a
constraint. Only for P02 version models, the Digital
input, DI2 from the controller will be connected to
the Module B+. This will indicate the Alarm, that
stops the Compressor running in case of Module
B+ failure. The Controller Parameter must o37 must
be set to 1.
The speed variation of the EC fan motor will be
controlled by the Optyma Plus controller, by
measuring the difference between the Ambient
Temperature and Saturated
Temperature (Dew). Lesser the difference, higher
the speed. The default factory set will be 8K. The
adjustable range will be 2-20 K. To adjust, from the
home screen of the Optyma controller (showing
saturated suction Temperature), press the middle
button and vary the value with upper or lower key.
11 – Verification before commissioning
© Danfoss | Climate Solutions | 2024.07
Use safety devices such as safety
pressure switch and mechanical
relief
compliance with both generally and
locally applicable regulations and
safety standards. Ensure that they
are operational and properly set.
Check that the settings of high-
pressure switches and relief valves
don't exceed the maximum service
pressure of any system component.
• Before starting condensing unit ensure receiver
valves and ball valve are completely open.
• Verify that all electrical connections inside the
If another
condensing unit are properly fastened as they
could have worked loose during transportation.
• When a crankcase heater is required, the unit
must be energized at least 12 hours before initial
start-up and start-up after prolonged shutdown
for belt type crankcase heaters.
• Crankcase heater must be firmly fixed with
compressor shell. Ensure that it does not fall
down and energizes in air.
• Electrical panel door must be firmly closed using
the knob in door panel.
• All interconnecting tubes with (liquid and
suction) Optyma™ Plus condensing unit must be
sized properly depending upon the evaporator
location.
• Pressure drop in the suction and liquid line pipes
must be evaluated as per evaporator location
and distance (refer coolselector2).
• Optyma™ Plus condensing units suction /
discharge pressure must be within the operating
envelope, never operate condensing unit suction
pressure below absolute pressure (vacuum).
• The unit is equipped with a main switch with
overload protection and short circuit protection.
Overload protection is preset from factory, but it
is recommended to check the value before taking
the unit in operation. The overload protection
value can be found in the wiring diagram in the
unit front door.
• Check if discharge temperature sensor is firm
and has proper contact with discharge pipe.
• Ensure that you have read the installation
guideline that is delivered with the condensing
unit
• Only use the correct refrigerant(s) as detailed on
the data plate
• Check compressor oil level
• Check that all service valves are open
• Ensure the high pressure transmitter is open to
the system
• Check all mechanical connections are tight
• Check all electrical overload settings are correct
12 – Start-up
• Never start the unit when no refrigerant is
charged.
Condensing
• All service valves must be in the open position.
• Rotalock valve on the receiver should be
completely open. Turn anticlockwise direction to
open completely open
• Check compliance between unit and power
supply.
• Check that the crankcase heater is working.
• Check that the fan can rotate freely.
• Check that the protection sheet has been
removed from the backside of condenser.
• Balance the HP/LP pressure.
• Energize the unit. Condenser fan must start
promptly and after 30 seconds of time delay the
compressor starts (pre ventilation).
valve (not supplied) in
• Eventual reverse rotation
compressor can be detected by following
phenomena; the compressor doesn't build up
pressure, it has abnormally high sound level
and abnormally low power consumption. In
such case, shut down the unit immediately and
connect the phases to their proper terminals.
• If the rotation direction is correct the low pressure
indication on the controller (or low pressure
gauge) shall show a declining pressure and
the high pressure indication (or high pressure
gauge) shall show an increasing pressure (only
during startup).
13 – Check with running unit
• Check the fan rotation direction. Air must flow
from the condenser towards the fan.
• Check current drawn and voltage.
• Check suction superheat to reduce risk of
slugging.
• When a compressor sight glass is provided
observe the oil level at start and during operation
to confirm that the oil level remains visible.
• Respect the operating limits.
• Optyma™ Plus condensing units are designed to
operate upto 43 degree Celsius. During normal
operation or peak operation saturated dew
point condensing temperature not to exceed
corresponding to 63 deg Celsius for R404A/
R507, R448A, R449A, R452A, R454C, R455A.
Saturated dew point condensing temperature
not to exceed corresponding to 65 deg Celsius
for R134a, R513A & R1234yf.
• Check all tubes for abnormal vibration.
Movements in excess of 0.15 mm require
corrective measures such as tube brackets.
• When needed, additional refrigerant in liquid
phase may be added in the low-pressure side
as far as possible from the compressor. The
compressor must be operating during this
process.
• Do not overcharge the system.
• Follow the local regulations for restoring the
refrigerant from unit.
• Never release refrigerant to atmosphere.
• Before leaving the installation site, carry out
a general installation inspection regarding
cleanliness, noise and leak detection.
• Record type and amount of refrigerant charge
as well as operating conditions as a reference for
future inspections.
• Check suction & discharge pressure and
temperature.
• Check refrigerant charge and running currents of
motors to ensure correct operation .
• Check compressor suction superheat to reduce
risk of liquid slugging.
• Allow the system to run for 3 – 4 hours. Check
compressor oil level and top up with the correct
oil type as identified on the data plate of the unit
and compressor.
• Recheck the compressor oil level again after 24
hours operation.
• Carry out final leak test and ensure all covers are
fitted and all screws are fastened.
• Complete refrigerant labelling to comply with
local standard
• Scroll Compressors are allowed to Operate at
maximum of 12 Start/Stop cycles per hour.
• Reciprocating Compressors are allowed to
Operate at maximum of 10 Start/Stop cycles per
hour.
• Ensure maintenance is carried out in accordance
with the installation instructions.
118A2177D - AN37261897352601-010502 | 5
of a 3-phase