4
• Evaporator
Evaporator coils are manufactured from seamless inner grooved copper tubes mechanically bonded to
aluminium ns to ensure optimum heat transfer. All coils are tested against by Nitrogen holding at 609psig
and highly precise Helium leak test at 235psig.
ALL standard coils are 3-4 rows / 14-16 FPI, 3/8” (9.52mm) O.D. tubes.
Hydrophilic Gold Fin coating (NA549) is offered as standard, which has longer life span under corrosive environment.
• CondenserFanandMotor
Fans are of propeller type, direct driven by weatherproof electrical induction motors. Condenser fan motor
has class F insulation and splash-proof enclosure, IP44.
• EvaporatorFanandDrive
Blower is DWDI centrifugal, forward curved type. It is mechanically and dynamically balanced and being
mounted on a rigid shaft in a self aligned bearing block. The motor is tted with an adjustable variable pitch
pulley (VPP) drive as standard. It has class B insulation and dripping water proof, IP22.
• RefrigerantCircuit
Each refrigerant circuit shall have independent electronic expansion devices, HP/LP switch and refrigerant
line service pressure ports as standard factory installed.
• ExpansionDevice
Electronic Expansion Valve is being used to ensure accurate control of refrigerant ow.
• Casing/Structure
The unit casing used in M5RT-BR series is made of zinc coated galvanized steel sheets. It is further coated
with an electrostatic powder coat and then oven-baked for a tough and lasting weather resistant nish. Zinc
plated screws are used throughout to further reduce possibility of unit rusting.
• Insulation
ALLpossible areas of condensation to happen are insulated by PE, Polyethelene. Panel insulation is 10mm
thickness while drain pan insulation is 5mm thickness.
• Control
Units shall be completely factory supplied with an integrated controlled Module, with built in resident control
algorithms to make decide heating, cooling, or ventilating operations in response to electronic signals from
indoor & outdoor temperature sensors.
• RooftopPanel-handset
Rooftop Panel comprises all starting, operating and safety controls setting. It is connected to the IC module
PCB and supplied as standard. Standard wire length is 15 meter and it can be extended up to 100 meter.
OptionalFeatures
• 3rdPartyThermostat
For application that requires uniform thermostat outlook with other electrical appliances. 3rd Party thermostat
can be connected to the factory supplied module via the contact point available on PCB board.
• BasicBMSConnection
Unit’s standard PCB board provides dry contact for basic BMS connection. Input signal will go to dry contact
ON/OFF, COOL/HEAT, and 4 to 20 mA temperature adjuster while output signal will come from ON/OFF,
COOL/HEAT, ALARM and DEFROST dry contact.
• Economizer
Theeconomizerkit allows outside air to be mixed withreturnairfor‘free’coolingif the outdoorairtemperature
is suitable. Economizer cooling can be used alone or in conjunction with mechanical cooling. Beside that,
the economizer kit can be used as well to provide ventilation air thus can improve indoor air quality. Please
refer to the economizer kit features for more details.
• CO2Sensor
Field specied CO2sensor can be easily plug on the control board’s dry contact, which is available on the
economizer extension board.
• AuxiliaryHeater
Auxiliary heater connection point is available on the standard PCB for eld supplied heater connection.
