49
ΙΛ
8-2. Condition of operating restriction
(1) Cooling (2) Heating
(3) Cautions for characteristics of heating capacity
During heating operation, when snow accumulates upon thermo exchanger or the outdoor temperatures
are blow -5
O
C ~ 7
O
C, frost may form and the heating performance may be down. To remove the frost,
air conditioner performs periodic (forty minutes to seventy minutes) frost removing operation, the heating
operation is turned off and fan of indoor unit also stops during the frost removing operation, the heating
operation is turned off and fan of indoor unit also stops during the frost removing state (five to ten minutes)
(the heating capacity table of inner and outdoor units do not reflect the performance reduction part caused
by the frost removing operation).
Indoor temperature(DB)Indoor temperature(WB)
Outdoor
temperature (DB)
Only for the
Middle East
Operating
Envelope
Operating
Envelope
Cold-oriented
type
Outdoor
temperature (WB)
❋ The reliability of air conditioner is
preserved till the outdoor temperature
drops below -15
O
C even though the air
conditioner is a cold-oriented type, but
wind chill heating performance may fall.
DVM TM(chapter4-2)_E<03759 6/14/02 2:57 PM Page 49
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