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Instructions
• 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
• Ensure
maintenance
is
accordance with the installation instructions.
14 – Emergency running without controller
In case of controller failure, the condensing
unit can still be operated when the controller
standard wiring is modified into a temporary
wiring as described below.
This modification may be done by
authorized electricians only. Country
legislations have to be followed.
Disconnect the condensing unit
from power supply (turn hardware
main switch off )
The controller must be exchanged
as soon as possible to avoid any
lifetime reduction.
• Contact of room thermostat at 24 - 25(i.e. DI1)
must be possible to switch 250VAC.
• Remove wire 22 (safety input DI3) and wire 24
(room thermostat DI1) and put them together
with an insulated 250 Vac 10mm² terminal
bridge.
• Remove wire 25 (room thermostat DI1) and
wire 11 (compressor supply) and put them
together with an insulated 250VAC 10mm²
terminal bridge.
• Remove wire 6 and connect it with terminal
bridge for wire 11 and 25. A fan pressure switch
or fan speed controller can be connected in
series to wire 6.
• Remove wire 14 (crankcase heater) and connect
it to the compressor contactor terminal 22.
• Remove wire 12 (supply crankcase heater),
extend this wire by using an 250 Vac 10mm²
terminal bridge and 1,0mm² brown cable and
connect it to compressor contactor terminal 21.
• Remove the large terminal block from the
© Danfoss | Climate Solutions | 2021.08
controller terminals 10 to 19.
• Connect the condensing unit to power supply
(turn hardware main switch on).
15 – Maintenance
To prevent system related problems, following
periodic maintenance is recommended:
• Verify that safety devices are operational and
properly set.
• Ensure that the system is leak tight.
carried
out
in
• Check the compressor current drawn.
• Confirm that the system is operating in a way
consistent with previous maintenance records
and ambient conditions.
• Check that all electrical connections are still
adequately fastened.
• Keep the unit clean and verify the absence of
rust and oxidation on the unit components,
tubes and electrical connections.
• Micro
adequately cleaned to avoid clogging.
The condenser must be checked at least once
a year for clogging and be cleaned if deemed
necessary. Access to the internal side of the
condenser takes place through the fan door.
Microchannel coils tend to accumulate dirt on
the surface rather than inside, which makes them
easier to clean than fin-&-tube coils.
• Switch off the power supply to the condensing
unit by turning off the main switch before
opening the fan panel.
• All electrical equipments, PPEs, tool must be
compatible and approved to use with A2L
refrigerants like R454C, R455A & R1234yf.
• Remove surface dirt, leaves, fibres, etc. with
a vacuum cleaner, equipped with a brush or
other soft attachment. Alternatively, blow
compressed air through the coil from the inside
out, and brush with a soft bristle. Do not use
a wire brush. Do not impact or scrape the coil
with the vacuum tube or air nozzle.
• Check if openings in partition panel and base
plate are free for pre-ventilation.
• Before closing the fan door, turn the fan blade
in a safe position, to avoid that the door hits the
fan.
If the refrigerant system has been opened, the
system has to be flushed with dry air or nitrogen
Always switch off the power supply
to the condensing unit by turning
off the main switch before opening
the fan panel
Internal
pressure
and
surface
temperature are dangerous and
may cause permanent injury.
Maintenance
operators
installers
require
appropriate
PPEs, skills, tools to carryout the
maintenance
activity.
Tubing
temperature may exceed 100°C and
can cause severe burns.
Ensure
that
periodic
service
inspections are performed to the
system reliability and as required by
local regulations are performed.
channel
heat
exchanger
to remove moisture and a new filter drier has to
be installed. If evacuation of refrigerant has to
be done, it shall be done in such a way that no
refrigerant can escape to the environment.
16 – Declaration of incorporation
• Pressure Equipment Directive 2014/68/EU
EN 378-2:2016 - Refrigerating systems and Heat
Pumps - Safety and environmental requirements-
Parts 2: Design, construction, testing, marking
and documentation.
Low Voltage Directive 2014/35/EU EN 60335-
and
1:2012 + A11:2014- Household and similar
electrical appliances-Safety-Part
1: General requirements-for all below mentioned
condensing units.
Eco-design
DIRECTIVE
establishing a framework for the setting of Eco-
design requirements for energy-related products.
REGULATION (EU) 2015/1095, implementing Eco-
design Directive 2009/125/EC with regard to Eco-
design requirements for professional refrigerated
storage cabinets, blast cabinets, condensing
units and process Chiller.
• Condensing unit measurements are made
according
to
standard "EN
– Compressor and condensing units for
refrigeration-performance
methods- part 2: Condensing units. Eco design
declaration; refer Danfoss Coolselector®2 with
code number (114X....) to find the declaration.
17 - Warranty
Always transmit the model number and serial
surface
number with any claim filed regarding this
product.
The product warranty may be invalied in
following cases:
• Absence of nameplate.
• External modifications, in particular, drilling,
welding, broken feet and shock marks.
• Compressor opened or returned unsealed.
• Rust, water or leak detection dye inside the
compressor.
• Use of a refrigerant or lubricant not approved
by Danfoss.
• Any deviation from recommended instructions
pertaining to installation, application or
maintenance.
• Use in mobile applications.
• Use in explosive atmospheric environment.
• No model and serial number transmitted with
the warranty claim.
18 – Disposal
Danfoss recommends that condensing
units and oil should be recycled by a
suitable company at its site.
118A2177B - AN37261897352601-010202 | 5
2009/125/
EC,
13771-2:2017"
testing
and
test
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