CTC Union EcoAir 500M, Installation And Maintenance Manual

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39 CTC EcoAir 510M 230V 1N~
8. Operation and Maintenance
When the installer has installed your new products, you should check along
with the installer that the system is in perfect operating condition. Let the
installer show you where the power switches, controls and fuses are so that
you know how the system works and how it should be maintained. Bleed the
radiators (depending on type of system) after around three days of operation
and top up with water if required.
Defrost
CTC EcoAir 510M is equipped with hot gas defrosting. The heat pump
checks constantly whether defrosting is needed and, if so, defrosting starts,
the fan stops, the 4-way valve changes direction and the discharge goes to
the evaporator instead. A hissing sound is heard as the water drains from
the evaporator. There may be large amounts of water. When the product has
defrosted, the fan starts and the discharge goes into the condenser instead,
and the heat pump returns to normal operation.
Modulating compressor
The power in the heat pump is adapted using modulating operation
according to the actual energy requirement. The compressor runs constantly
with the correct power and thereby minimises the number of start and stop
periods. The modulating power regulation provides optimal efficiency.
The fan
The fan starts 15 seconds before the condenser and runs until the
compressor stops. During defrosting the fan stops and restarts when
defrosting is finished. The fan is speed-controlled and follows the need for
power.
Maintenance
A large amount of air passes through the evaporator. Leaves and other
debris can get stuck and restrict the air flow. At least once year the
evaporator coil should be checked and cleared of particles that block
the air flow. The evaporator and outer covering should be cleaned with a
damp cloth or soft brush. No other periodic maintenance or inspection is
necessary.
Periodic maintenance
After three weeks of operation and every three months of the first year,
thereafter once a year:
• Check that the installation is free of leaks.
• Check that the product and system are free of air; bleed if needed.
• Check that the evaporator is clean.
• The products do not require annual inspection for refrigerant leakage.