Cooper & Hunter CHV-5S224SNMX, Service Manual

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3 PRODUCT
CHV
5 COM PACT MULTI VRF UNIT
SERVICE M ANUAL
dual-frequency intergrated drive technology, and parallel processing ability increase 100%. By us ing G-MATRI K
technology, the harmonic wave of drive current is less, the torque ripple is small, and the efficiency is high and
vibration noise is low. Adopts independent R&D high frequency and weak magnetic technology to make the
inverter compressor run in wide frequency of 15~120Hz and wied voltage of 240~450V and it has good speed
regulation performance, wide speed range and is more comfortable.

The bionic super-quiet fan blade
Adopting aerodymamics and the theory of bionics research achivements, the unique pits on the leading edge of
the blade effectively destroy the formation of the leading edge vortex and prevent it from falling off. The pits and
the separation vertex on the leading edge are broken into small ones, which reduces 2dB of broadband noise and
improves sound quality. At the same time it reduces the load of the fan motor, which makes the fan run more
efficiently.

New generation CAN bus communication
Due to the latest communication method—CAN Bus Communication, system’s anti-interference capability is
stronger and the control on indoor units is more accurate, with higher reliability. When a single indoor unit or
outdoor unit quit the communication automatically, there is no impact on the network. Multiple means of
communication, sataus information of the units in the network can be feed back immediately. The use rate of CAN
bus is improved 10 times of 485 communication. The communication between indoor and outdoor unit is up to
20Kbps, which has increased by 100% and date exchange is faster. Multi-group network, it is easy to extend to the
new device (any equipment conforms to CAN protocol) and realize the non-polarity installation. The
communication distance is up to 1500 m.

New oil return technology
C&H
active balancing oil return technology provides a new method for controlling the oil level of parallel
compressor, which makes the oil level automatically adjust near the hole for balancing oil when the compressor is
runnig to prevent the compressor from running in short of oil for long time and avoid the damage. At the same time
it can avoid oil hammer for the oil level is too high.

Long distance refrigerant pipe
The longest piping length is up to 100 m, the longest equivalent length is up to 125 m. The drop between
indoor units is up to 15 m. When the outdoor unit is above the indoor unit, the biggest drop is up to 50 m. When the
outdoor unit is under the indoor unit, the drop is up to 40 m.

Free design and easy installaiton
With four-way airflow design, humanized base, simple piping and wiring system, sideward airflow design,the
installation of the unit can be against the wall and more easy and convenience, which greatly reduce the cost of
transporation and installation.

Perfect malfunction protection
The function for malfunction protection is perfect, which includes over current protection, high pressure
protection, low pressure protection, exhaust temperature protection, phase lacking protection, voltage protection,
communication malfunction, temperature sensor malfunction to ensure the reliable operation for the unit.