Lennox ROOFTOP FLEXY FXK 55, Installation, Operating And Maintenance Manual

Page: 43 / 106

COMMISSIONING
FLEXYII_WSHP-IOM-1307-E - 41 -
RUN TEST
Start unit in cooling mode
Thermodynamic readings are possible on Climatic 60 or using
manometers.
No rated values are given here. These depend on the climatic
conditions both outside and inside the building during
operation. However, an experienced refrigeration engineer
will be able to detect any abnormal machine operation.
Safety test
- Check Air pressure switch "Dirty filter" detection test: vary
the set-point value (menu page 2335 on DS60) in respect to
the air pressure value. Observe the response of the
CLIMATIC™ (menu 2332).
- Same procedure for detecting "Missing Filter" (page menu
2334) or "Air Flow Detection" (page menu 2333).
- Check the smoke detection function (if fitted).
- Check the Firestart by pressing the test button (if fitted).
- Disconnect the circuit breakers of the condensor fans and
check the high pressure cut-out points on different refrigerant
circuits.
Reverse cycle test
This test is designed to check the good operation of the 4-
way reversing valves on heat pump reversible systems. Start
the reverse cycle by adjusting the cold or hot temperature
threshold data according to the indoor and outdoor conditions
at the time of test (
menu 2222).