Allied Downflow or Horizontal 2 Stage Heat Variable Speed Gas Fired Non-Condensing Warm Air Furnace Installation And Servicing Instructions page 4

BLOWER MOTOR SPECIFICATIONS AND AIRFLOW ADJUSTING DATA
MOTOR BLOWER
MODEL
HP WHEEL
AV050B3 1/2 10 X 6
AV075B3 1/2 10 X 6
AV100B4 3/4 12 X 9
AV125B5 3/4 12 X 12
THE UNIT, AS SHIPPED, IS FACTORY SET AT SETTING "A" TO RUN AT THE MIDDLE OF THE HEATING RISE RANGE SHOWN ON THE
UNIT RATING LABEL.
When operating the furnace in the heating mode, the static pressure and the temperature rise (supply air temperature
minus return air temperature) must be within those limits specified on the rating label. Failure to follow this warning
could lead to severe furnace damage.
Turn OFF all gas and electrical power to furnace before performing any maintenance or service on unit. (Unless
specific test requires gas and electrical supplies.) Failure to take this precaution may result in personal injury due
to electrical shock or uncontrolled gas leakage.
20571201
Adjusting Airflow
HEAT SETTINGS
HEATING CFM @ .50 STATIC
SETTING SETTING SETTING
"A" "B" "C"
525 425 325
740 640 540
1250 1150 1050
1650 1550 1450
SETTING COOLING
"D" ADJUSTMENT
NORM
625 ( + )
( - )
NORM
840 ( + )
( - )
NORM
1350 ( + )
( - )
NORM
1750 ( + )
( - )
Issue 0527
COOL SETTINGS
COOL CFM @ .50 STATIC
SETTING SETTING SETTING
"A" "B" "C"
1200 1000 800
1380 1150 920
1020 850 680
1200 1000 800
1380 1150 920
1020 850 680
1600 1400 1200
1800 1610 1380
1360 1190 1020
2000 1800 1600
2200 2070 1840
1700 1530 1360
SETTING
"D"
600
690
510
600
690
510
1000
1150
850
1400
1610
1190
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