To install the filters, remove the filter access panel located to the left of the condensate drain connection as shown in Figure 5.
NOTE: Filters must be installed with “Air Flow” arrows pointing inward
Slide filters all the way into the filter racks provided. When more than one filter in a filter rack is required, they must butt each other when sliding into position. Replace the filter access panel.
BLOWER ASSEMBLY
Even with good filters properly in place, blower wheels and motors will become dust laden after many months of operation. The entire blower assembly should be inspected annually. If the motor and wheel are heavily coated with dust, they can be brushed and cleaned with a vacuum cleaner.
These units are supplied with blower shaft bearings that do not require maintenance but may be relubri- cated if desired. Every three years, using a low pres- sure grease gun, pump grease into the bearing grease fitting until grease just begins to show at the seals. Do not over lubricate. Use any lithium base grease recom- mended for ball bearing service.
Perform all maintenance operations on the blower motor with electric power disconnected from the unit. Do not attempt to lubricate bearings with the unit in operation.
MOTORS
Outdoor fan motors are permanently lubricated and require no maintenance.
Ventor motor is factory lubricated for an estimated 10 year life.
INDOOR COIL
(2)14" X 20"
FILTERS
CONDENSATE
DRAIN
CONNECTION
(1)14" X 25"
FILTERS
3 - 6 TON UNIT
15TON
(2)18" X 24"
FILTERS
| 20 TON |
| INDOOR COIL | ||
(4) 16" X 20" |
| ||||
FILTERS |
| ||||
|
|
|
| CONDENSATE | |
| 20 TON | DRAIN | |||
| CONNECTION | ||||
|
|
|
| ||
(4) 16" X 25" | |||||
| |||||
FILTERS |
| ||||
15 TON
(3)18" X 24"
FILTERS
15 & 20 TON
STANDARD & HIGH EFFICIENCY UNITS
INDOOR COIL
(6) 12" X 24"
FILTERS
CONDENSATE
DRAIN
CONNECTION
(6)12" X 24"
FILTERS
25 TON STANDARD EFFICIENCY
15, 17.5, 20, 25 TON
FIGURE 5: END VIEW LESS FILTER ACCESS PANEL
Indoor Blower Motor and Drive - The indoor blower motor features ball bearings that do not require peri- odic lubrication. Periodic lubrication of the motor and bearings can extend the life of components but is optional.
If desired, every three years, using a low pressure grease gun, pump grease into the bearing grease fit- ting until grease just begins to show at the seals. Do not over lubricate. Use any lithium base grease recom- mended for ball bearing service.
6 | Unitary Products Group |
