48VLU (K) Ultra Low NOx: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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* Air delivery values are without air filter and are for dry coil (See Wet Coil Pressure Drop Table).
† Factory-shipped continuous fan speed
‡ Factory-shipped heating speed
**Factory-shipped cooling speed
"High Static Cooling" = Only to be used for cooling function (not allowed for heating function)
NOTE: Deduct field-supplied air filter pressure drop and wet coil pressure drop to obtain static pressure available for ducting.
“NA” = Not allowed for heating speed
60090
35 - 65
(19 - 36)
Low† Blue Alternate Heating
CFM 641 551 462 385 289 216 163 115 --- ---
BHP 0.05 0.06 0.06 0.07 0.07 0.08 0.08 0.09 --- ---
Gas Heat Rise (
o
F)
NA NA NA NA NA NA NA NA NA NA
Gas Heat Rise (
o
C)
NA NA NA NA NA NA NA NA NA NA
Med-Low‡ Pink
Heating
Alternate Cooling
CFM 1437 1395 1351 1307 1265 1221 1176 1132 1084 1039
BHP 0.29 0.30 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38
Gas Heat Rise (
o
F)
47 48 50 51 53 55 57 59 62 64
Gas Heat Rise (
o
C)
26 27 28 28 29 30 32 33 34 36
Medium** Red
Cooling
Alternate Heating
CFM 1914 1881 1848 1814 1780 1748 1716 1681 1619 1512
BHP 0.62 0.64 0.65 0.67 0.68 0.69 0.71 0.72 0.71 0.66
Gas Heat Rise (
o
F)
35 36 36 37 38 38 39 40 41 44
Gas Heat Rise (
o
C)
19 20 20 21 21 21 22 22 23 25
Med-High Orange
Alternate Cooling
Alternate Heating
CFM 1928 1897 1862 1830 1796 1764 1732 1698 1620 1512
BHP 0.64 0.65 0.67 0.68 0.69 0.71 0.72 0.73 0.71 0.66
Gas Heat Rise (
o
F)
35 35 36 37 37 38 39 39 41 44
Gas Heat Rise (
o
C)
19 20 20 20 21 21 21 22 23 25
High Black High Static Cooling Only
CFM 2212 2167 2124 2061 1976 1892 1794 1699 1567 1438
BHP 0.97 0.99 1.00 0.97 0.95 0.91 0.86 0.82 0.77 0.71
Shaded areas indicate speed/static combinations that are not permitted for dehumidification speed.
Table 9 – Dry Coil Air Delivery* - Horizontal and Downflow Discharge Sizes 24-60
Unit
Size
Heating
Rise
o
F (
o
C)
Motor Speed Tap
Allowable
Functions
ESP (in. W.C.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Table 10 – Wet Coil Pressure Drop (IN. W.C.)
Unit
Size
Standard CFM (SCFM)
600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200
24 0.03 0.04 0.04 0.05 0.06
30 0.05 0.06 0.07 0.08 0.11
36 0.06 0.06 0.09 0.10 0.11 0.14
42 0.05 0.05 0.06 0.07 0.08 0.08 0.09 0.09 0.11
48 0.04 0.06 0.09 0.10 0.10 0.11 0.12 0.13 0.14
60 0.06 0.07 0.01 0.08 0.09 0.10 0.12 0.13
Table 11 – Economizer with 1-in. Filter Pressure Drop (IN. W.C.)
Filter Size in. (mm)
Cooling
Tons
Standard CFM (SCFM)
600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200
600-1400 CFM
12x20x1+12x20x1
(305x508x25+305x508x25)
2.0,
2.5
- - 0.09 0.14 0.16 0.18 0.25 0.28 0.30 - - - - - - - -
1200-1800 CFM
16x24x1+14x24x1
(406x610x25+356x610x25)
3.5 - - - - - - 0.10 0.11 0.12 0.13 0.14 0.16 0.16 - - - -
1100-2200 CFM
16x24x1+18x24x1
(406x610x25+457x610x25)
3.0,
4.0,
5.0
- - - - - .08 .10 .11 .13 0.15 0.17 0.18 0.20 0.21 0.22 0.23 0.23
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