COMFORT-AIRE A-VFH30QB-1 Installation & Operation Manual page 2

(1) To guarantee personal safety when operating this system, please strictly follow the
instructions listed in the manual.
(4) The total capacity of the indoor units which run at the same time can not exceed that of the
outdoor units; otherwise, the cooling (heating) capacity of each indoor unit will be reduced.
Model
Minimum number of
connectable indoor units
Maximum number of
connectable indoor units
Minimum capacity of
connectable indoor units
Maximum capacity of
connectable indoor units
(5) Switch the main power on 8 hours before starting the unit, helpful for a successful startup.
(6) It is a normal phenomenon that the indoor unit fan will still run for 20~70 seconds after the
indoor unit receives the "stop" signal so as to make full use of after-heat for the next operation.
(7) When the running modes of the indoor and outdoor units conflict, it will be indicated on the
display of the wired controller in five seconds and then the indoor unit will stop. In this case, they can
return to normal condition by harmonizing their running modes: the cooling mode is compatible with the
dehumidifying mode and the fan mode can go with any other mode. If the supply power fails when the
unit is running, then the indoor unit will send the "start" signal to the outdoor unit three minutes
after power recovery.
(8) Cautions for the repair and Maintenance Personnel:
During repair and maintenance, prior to the startup of the compressor make sure the crankcase
heater has been energized for at least eight hours! Once the compressor is started, it should be be
observed for at least 30 minutes to confirm satisfactory operation.
Preface
Installation & Operation Manual - VFH-B 30/36/42 Series
Preface
A-VFH30QB-1
2
4
18KBtu
42KBtu
A-VFH36QB-1
2
4
18KBtu
48KBtu
A-VFH42PB-1
2
5
18KBtu
56KBtu