Rooftop Unit - Lennox SGH036 Installation Instructions Manual

TO INCREASE CFM
LOOSEN ALLEN SCREW &
TURN PULLEY CLOCKWISE
TO DECREASE CFM
SIDE VIEW TURN PULLEY
COUNTERCLOCKWISE
MOTOR
ALLEN
SCREW
PULLEY
TO INCREASE BELT TENSION
1-Loosen four screws securing blower motor to
sliding base.
2-Turn adjusting front and rear tension adjusting
screws to the right, or clockwise, to move the
motor upward and tighten the belt.
3-Tighten four screws.
INSTALLATIONS WITH DUCTWORK

ROOFTOP UNIT

RE­
SUPPLY
TURN
MAIN
DUCT RUN
BLOWER ASSEMBLY (SG/SC 240)
LOOSEN SCREWS TO
ADJUST BELT TENSION
SLIDING BASE
FIGURE 23
LOCATION OF STATIC PRESSURE READINGS
RETURN AIR
READING LOCATION
FIRST BRANCH
OFF OF MAIN RUN
SUPPLY AIR
READING
LOCATION
FIGURE 24
Page 19
BELT TENSION
ADJUSTING SCREWS
BLOWER
MOTOR
PULLEY
BLOWER
REMOVE SCREWS TO SLIDE
ASSEMBLY
BLOWER ASSEMBLY OUT OF UNIT
INSTALLATIONS WITH CEILING DIFFUSERS
ROOFTOP UNIT
SUPPLY
SUPPLY AIR
READING
DIFFUSER
LOCATION
ALLEN
SCREW
LOOSEN FOUR
SCREWS TO AD­
JUST BELT TENSION
RETURN AIR
READING
LOCATION
RE­
TURN
SGH/SCH036, 060, 120, 240