ENVIRO-TEC
20
FORM ET115.24-NOM11 (118)
DRAIN
The drain should be checked before initial start-up and
at the beginning of each cooling season to assure that
the lines are clear. If it is clogged, steps should be taken
to clear the debris so that condensate will flow easily.
Periodic checks of the drain should be made during the
cooling season to maintain a free flowing condensate.
TABLE 4: FACE AREA, FREE AREA AND FILTER SIZES
UNIT
SIZE
COIL FACE
AREA
RETURN AIR
GRILLE FREE
AREA
SUPPLY AIR
GRILLE FREE
AREA
FILTER FACE
AREA (REAR
RETURN)
NOMINAL FILTER SIZES
(REAR RETURN)
FILTER FACE AREA
(BOTTOM RETURN)
NOMINAL FILTER SIZES
(BOTTOM RETURN)
02
0.89 [0.08]
0.83 [0.08]
0.61 [0.06]
1.17 [0.11]
16 x 10.5 x 1
[406 x 267 x 25]
1.06 [0.1]
16 x 9.
2
5 x 1
[406 x 2
35
x 25]
03
1.07 [0.1]
0.83 [0.08]
0.61 [0.06]
1.39 [0.13]
19 x 10.5 x 1
[483 x 267 x 25]
1.25 [0.12]
19 x 9.
2
5 x 1
[483 x 2
35
x 25]
04
1.35 [0.13]
1.25 [0.12]
0.92 [0.09]
1.77 [0.16]
24.25 x 10.5 x 1
[616 x 267 x 25]
1.60 [0.15]
24.25 x 9.
2
5 x 1
[616 x 2
35
x 25]
06
1.72 [0.16]
1.45 [0.14]
1.07 [0.1]
2.26 [0.21]
31 x 10.5 x 1
[787 x 267 x 25]
2.05 [0.19]
31 x 9.
2
5 x 1
[787 x 2
35
x 25]
08
2.11 [0.2]
1.87 [0.17]
1.38 [0.13]
2.77 [0.26]
(2) 19 x 10.5 x 1
[483 x 267 x 25]
2.51 [0.23]
(2) 19 x 9.
2
5 x 1
[483 x 2
35
x 25]
09
2.35 [0.22]
2.08 [0.19]
1.53 [0.14]
3.08 [0.29]
(1) 20, (1) 22.25 x 10.5 x 1
[508, 565 x 267 x 25]
2.79 [0.26]
(1) 20, (1) 22.25 x 9.
2
5 x 1
[508, 565 x 2
35
x 25]
10
2.89 [0.27]
2.7 [0.25]
1.99 [0.18]
3.79 [0.35]
(2) 26 x 10.5 x1
[660 x 267 x 25]
3.43 [0.32]
(2) 26 x 9.
2
5 x1
[660 x 2
35
x 25]
12
3.33 [0.31]
3.12 [0.29]
2.3 [0.21]
4.38 [0.41]
(1) 20, (1) 40 x 10.5 x 1
[508, 1016 x 267 x 25]
3.96 [0.37]
(1) 20, (1) 40 x 9.
2
5 x 1
[508, 1016 x 2
35
x 25]
Should the growth of algae and/or bacteria be a
concern, consult an air conditioning and refrigeration
supply organization familiar with local conditions for
chemicals available to control these agents. If cleaners
are used, they should be compatible with the materials
of construction for the coil, drain pan, and condensate
pump (if applicable).
NOTES:
1. Face and free areas are in square feet [square meters].
2. Filter sizes are in inches [millimeters].
3. Free area of ENVIRO-TEC
®
Model HLE and Telescoping
Bottom Panel return grilles.
4. Free area of ENVIRO-TEC
®
Model HLE supply grille and
minimum free area allowable for a supply grille supplied
by others.
