548267-YIM-C-0211
Unitary Products Group
19
Maintenance
Normal Maintenance
Periodic maintenance consists of changing or cleaning filters
and general cleaning of the outdoor coil.
FILTERS -
Inspect once a month. Replace Disposable or clean
Permanent Type as necessary. DO NOT replace Permanent
Type with Disposable.
MOTORS -
Indoor and outdoor fan motors are permanently
lubricated and require no maintenance.
OUTDOOR COIL -
Dirt should not be allowed to accumulate on
the outdoor coil surface or other parts in the air circuit. Cleaning
should be as often as necessary to keep the coil clean. Use a
brush, vacuum cleaner attachment, or other suitable means. If
water is used to clean the coil, be sure that the power to the unit
is shut off prior to cleaning.
Table 9:
Electric Heat Minimum Supply Air
Size
(Tons)
Voltage
Minimum Supply Air (CFM)
Heater kW
5.0
6.5
10.0
15.0
024
(2.0)
208/230-1-60
800
800
800
750
030
(2.5)
208/230-1-60
800
800
800
750
036
(3.0)
208/230-1-60
800
800
800
750
042
(3.5)
208/230-1-60
1300
1300
1270
1270
048
(4.0)
208/230-1-60
1300
1300
1270
1270
060
(5.0)
208/230-1-60
1300
1300
1270
1270
Table 10: Indoor Blower Specifications
Size
(Tons)
Motor
HP
RPM
Eff.
SF
Frame
024
(2.0)
1/2
1100
0.8
1.0
48
030
(2.5)
1/2
1100
0.8
1.0
48
036
(3.0)
1/2
1100
0.8
1.0
48
042
(3.5)
1
1100
0.8
1.0
48
048
(4.0)
1
1100
0.8
1.0
48
060
(5.0)
1
1100
0.8
1.0
48
Table 11: Electric Heat Multipliers
Voltage
kW Capacity Multipliers
1
1. Electric heaters are rated at nominal voltage. Use this table to determine the electric heat
capacity for heaters applied at lower voltages.
Nominal
Applied
240
208
0.75
230
0.92
Prior to any of the following maintenance procedures,
shut off all power to the unit, to avoid personal injury.
Exercise care when cleaning the coil so that the coil fins
are not damaged.
Do not permit the hot condenser air discharge to be
obstructed by overhanging structures or shrubs.
