P5417055
5
3. Before Operation
3.1 Operating Range
This heat pump air conditioner has been designed for the following temperatures. Operate the heat pump air
conditioner within this range.
Apply power to the outdoor unit(s) at least 12 hours prior to system operation to allow for preheating
of the compressor oil. Do not start the system immediately without preheating the compressor.
Otherwise, the compressor can be damaged. Check that the outdoor unit is free of ice and snow
cover. If snow covered, remove with hot water at (122°F or 50°C). If hot water temperature is higher
than 122
o
F (50
o
C), it can cause damage to plastic parts.
● When the system is restarted after a shutdown longer than approximately three months, it is recommended
that the system be checked by your service contractor.
● Turn OFF at the main switch when the system has been off for a long period of time.
If the main switch is not turned OFF, electricity is consumed, because the oil heater is always energized
during periods of compressor stoppage.
NOTICE
Temperature
Maximum
Minimum
Cooling
Operation
Indoor
89
o
F DB/73
o
F WB
(32
o
C DB/23
o
C WB)
69
o
F DB/59
o
F WB
(21
o
C DB/15
o
C WB)
Outdoor
118
o
F DB
(48
o
C DB) *
14
o
F DB
(-10
o
C DB) *
Heating
Operation
Indoor
80
o
F DB
(27
o
C DB)
59
o
F DB
( 15
o
C DB)
Outdoor
59
o
F WB
(15
o
C WB) *
-4
o
F WB
(-20
o
C WB) *
DB: Dry Bulb, WB: Wet Bulb
* The temperature may change depending on the outdoor unit.
3.2 Efficient Use of Indoor Unit
●
Do not leave windows or doors open.
Operating efficiency is degraded.
Condensation and related problems can result. (Ventilate a room sufficiently too.)
●
Attach a curtain or a blind to a window.
Direct sunlight is blocked, and the cooling efficiency is enhanced.
●
Avoid using heating equipment during the cooling operation as much as possible.
Cooling efficiency is decreased. It may cause dew condensation and dew.
●
Use the built-in circulating fan, if warm air tends to remain around the ceiling.
Comfort is increased. Contact your distributor for the details.
●
Redirect airflow downward if ceiling surface areas become discolored due to airborne particulate.
It is recommended that airflow be redirected 30° downward.
●
Turn OFF power at the main power source if the indoor unit is not being used over a prolonged
period of time.
You are billed for excess electrical consumption while the unit rests in standby mode.
