Form I-MAPSIII&IV, P/N 222917R9, Page 31
6.2 Optional Power
Exhaust or
Gravity Exhaust
Hood on MAPS
®
Cabinets A, B,
C (without an
energy recovery
module)
If ordered with Option PE, the system is factory equipped with a power exhaust for
building air. The power exhaust blower, motor, and damper are assembled and at the
factory. The power exhaust hood(s) is factory assembled and shipped in a separate
carton to be installed at the site. To attach, slide the hood(s) over the ange and fasten
with the sheetmetal screws provided. NOTE: Attach the power exhaust hood BEFORE
installing the outside air hood or horizontal discharge ductwork.
FIGURE 16A - Attaching
Optional Exhaust
Hood(s)
NOTE: Power exhaust
hood is illustrated. Follow
same procedure for gravity
exhaust hood.
Cabinet A and B sizes (see Cross Reference, pages 71-72) have a 9x10 exhaust
blower, gravity damper, and one shipped-separate hood. Cabinet C sizes have dual
9x10 blowers, gravity dampers, and two shipped-separate hoods. Check the rating
plate for motor size (1/2 - 5 HP).
Standard control would turn the exhaust blower on when the unit blower runs. If
optional return air dampers are ordered, the power exhaust is wired to coordinate with
the appropriate damper position.
FIGURE 16B -
Optional Power
Exhaust Dimensions
(This side is attached to the MAPS
®
cabinet at the factory.)
(This side is attached to the MAPS
®
cabinet at the factory.)
RPM/HP Table - Power Exhaust Option PE1 on Cabinet A & PE2 on Cabinet B
CFM
External Static Pressure (ESP)
0.3 0.5 0.8 1.0 1.5
500 650/.50 -- -- -- --
1000 870/.50 1040/.50 1200/.50 1325/.50 1500/.75
1500 940/.50 1100/.50 1240/.75 1370/.75 1600/1.00
2000 1050/.75 1190/1.00 1310/1.00 1430/1.50 1640/1.50
2500 1190/1.50 1300/1.50 1410/1.50 1510/2.00 1710/2.00
3000 1350/2.00 1440/2.00 1535/3.00 1625/3.00 1800/3.00
3500 1520/3.00 1600/3.00 1680/5.00 1760/5.00 --
4000 1700/5.00 1760/5.00 1800/5.00 -- --
RPM/HP Table - Power Exhaust Option PE3 on Cabinet C
CFM
External Static Pressure (ESP)
0.3 0.5 0.8 1.0 1.5
1000 680/.50 -- -- -- --
1500 845/.50 1025/.50 1140/.50 -- --
2000 870/.50 1040/.75 1200/.75 1325/1.00 --
2500 900/.75 1070/.75 1220/1.00 1345/1.50 1575/1.50
3000 940/.75 1100/4.00 1240/1.50 1370/1.50 1600/2.00
3500 1000/1.00 1140/1.50 1275/1.50 1400/2.00 1620/3.00
4000 1050/1.50 1190/2.00 1310/2.00 1430/3.00 1640/3.00
4500 1120/2.00 1240/2.00 1360/3.00 1470/3.00 1675/5.00
5000 1190/3.00 1300/3.00 1410/3.00 1510/5.00 1710/5.00
5500 1270/3.00 1370/5.00 1470/5.00 1570/5.00 1750/5.00
6000 1350/5.00 1440/5.00 1535/5.00 1625/5.00 --
6500 1435/5.00 1520/5.00 -- -- --
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