Form O-Y, PN 273647R5, Page 6
3.0 Maintenance
and Service
Procedures -
Unit & Cooling
Components
3.1 Filters
Systems with disposable filters require more frequent filter inspection. Exposure to
humid makeup air can accelerate filter degradation. Replace filters when needed
using the same type of filters as the original.
Supply Air Filters
- The supply air filters are 4-inch pleated disposable filters.
Replacement filters are listed in the table below. Do not use any other type of filters.
Replacement Filters by Model Size and Cabinet Size
4" Disposable
Pleated
MERV 8
MERV 13
Cabinet Size
Model(s)
Model Sizes
Qty
Size
P/N
P/N
1
YDHA & YDMA
060
1
16 x 25
211128
256666
090, 120, 150
2
20 x 24
222480
260828
2
YDHA & YDMA
180, 210, 240
4
16 x 25
211128
256666
YDSA
120, 150
4
16 x 25
211128
256666
3
YDHA & YDMA
300 & 360
4
25 x 29
235757
235758
YDSA
180 & 210
FIGURE 2 - Installing
Replacement Supply
Air Filters
To access supply air filters, open the cooling coil / filter door. Follow the instructions
that apply.
Instructions:
1) Slide filter clip tab
from the slot in
the filter support.
Rotate clip slightly
and remove filter
clip.
2) Slide filters out.
3) Install new filters.
4) Replace filter clip.
Filter
Filter
Filter
Filter
Filter Clip,
P/N 272707
Cabinet Size 2
(see table above)
Cabinet Size 3
(see table above)
Instructions:
1) Slide filter clip tab
from the slot in the
filter support.
Rotate the clip slightly
and remove filter clip.
2) Slide filters out.
3) Install new filters.
4) Replace filter clip.
Filter
Filter
Filter
Filter
Filter Clip
P/N 284026
Filter
Filter
Instructions:
1) Slide filter clip
left and remove.
2) Slide filters out.
3) Install new filters.
4) Replace filter clip.
Cabinet Size 0
(see table above)
Filter Clip,
P/N 272222