Lennox VEP Series, Инструкция по установке и эксплуатации

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(6) Check the valve: For single-module unit, fully open the gas and liquid valve and close oil
balance valve; For dual/three module unit, fully open the gas, liquid valve and oil balance
valve.
5.2.2 T est run
5.2.2.1 Notices
(1) Before test operation, make sure unit is power on and compressor has been preheated for
more than 8 hours. Touch the unit to check whether it’s normally preheated. Start test
operation after unit is normally preheated, otherwise compressor might be damaged.
Commissioning Cycle must be performed by professional technicians or under
the guide of professional technicians.
Fig.61
(2) When Commission ing Cycle starts, system will operate according to the ambient temperature.
1) When outdoor temperature is above 20
º
C(68°F), Commissioning Cycle shall be in cooling mode.
2) When outdoor temperature is below 20
º
C(68°F), Commissioning Cycle shall be in heating mode.
(3) Before Commissioning , confirm again whether the cut-off valve of each basic module is fully turned
on.
(4) During Commissioning Cycle , front panel of the outdoor unit must be fully closed; otherwise,
Commissioning accuracy will be affected (see below).
Fig.62
(5) Before Commissioning Cycle , make sure the needed amount of refrigerant has been added to the
pipe or at least 70% of the needed refrigerant has been added.
Lennox VRF Unit