GAMA Gas-Fired Furnace, User'S Information Manual

Page: 12 / 40

BLOWER MOTOR SPECIFICATIONS AND AIRFLOW ADJUSTING DATA
Adjusting Airflow
MODEL
MOTOR
HP
BLOWER
WHEEL
HEAT SETTING COOL SETTINGS
ADJUST HEAT COOL CFM @ .50 STATIC
HEATING CFM ADJUSTMENT SETTING "A" SETTING "B" SETTING "C" SETTING "D"
EV050U3 1/2 10 X 6
NORM A NORM 1200 1000 800 600
LOW FIRE 600
( + ) 1380 1150 920 690
HIGH FIRE 775 ( - ) 1020 850 680 510
EV075U3 1/2 10 X 6
NORM A NORM 1200 1000 800 600
LOW FIRE 1000
( + ) 1380 1150 920 690
HIGH FIRE 1230 ( - ) 1020 850 680 510
EV100U4 3/4 12 X 9
NORM A NORM 1600 1400 1200 1000
LOW FIRE 1240
( + ) 1800 1610 1380 1150
HIGH FIRE 1550 ( - ) 1360 1190 1020 850
EV125U5 1 12 X 12
NORM A NORM 2000 1800 1600 1400
LOW FIRE 1250
( + ) 2200 2070 1840 1610
HIGH FIRE 1940 ( - ) 1700 1530 1360 1190
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.
20558801 Issue 0442 Page 4 of 32