Lennox G60UHV - Cooling Mode Blower Ramping Options

Page 14
G60UHV units manufactured before April 2003
Ramping Option A (Factory Selection)
 Motor runs at 50% for 1/2 minute.
 Motor then runs at 82% for approximately 7−1/2 min-
utes.
 If demand has not been satisfied after 7−1/2 minutes,
motor runs at 100% until demand is satisfied.
 Once demand is met, motor runs at 50% for 1/2 min-
ute.
 Motor ramps down to off.
OFF
OFF
1/2 MIN
50% CFM
COOLING DEMAND
7−1/2 MIN
82% CFM
100%
CFM
1/2 MIN
50% CFM
Ramping Option B
 Motor runs at 50% for 1/2 minute.
 Motor then runs at 82% for approximately 7−1/2 min-
utes.
 If demand has not been satisfied after 7−1/2 minutes,
motor runs at 100% until demand is satisfied.
 Once demand is met, motor ramps down to off.
OFF
OFF
1/2 MIN
50% CFM
7−1/2 MIN
82% CFM
100% CFM
COOLING DEMAND
Ramping Option C
 Motor runs at 82% for approximately 7−1/2 minutes.
 If demand has not been satisfied after 7−1/2 minutes,
the motor runs at 100% until demand is satisfied.
 Once demand is met, motor ramps down to off.
OFF
OFF
82%CFM
100% CFM
COOLING DEMAND
7−1/2 MIN
Ramping Option D
 Motor runs at 100% until demand is satisfied.
 Once demand is met, motor ramps down to off.
OFFOFF
100% CFM
COOLING
DEMAND
G60UHV units manufactured April 2003 and later
Ramping Option A (Factory Selection)
S Motor runs at 50% for 30 seconds.
S Motor then runs at 82% for approximately
7−1/2 minutes.
S If demand has not been satisfied after 7−1/2 minutes.
Motor runs at 100% until demand is satisfied.
S Once demand is met, motor runs at 50% for 30 sec-
onds then ramps down to stop.
OFF
OFF
1/2 MIN
50% CFM
COOLING DEMAND
7 1/2 MIN
82% CFM
100%
CFM
1/2 MIN
50% CFM
Ramping Option B
S Motor runs at 82% for approximately 7−1/2 minutes. If
demand has not been satisfied after 7−1/2 minutes
motor runs at 100% until demand is satisfied.
S Once demand is met, motor ramps down to stop.
OFF
OFF
82%CFM
100% CFM
COOLING DEMAND
7 1/2 MIN
Ramping Option C
S Motor runs at 100% until demand is satisfied.
S Once demand is met, motor runs at 100% for 45* sec-
onds then ramps down to stop.
OFF
OFF
100% CFM
COOLING DEMAND
* G60UHV units date coded prior to 2−2006 will delay 60 seconds
Ramping Option D
S− Motor runs at 100% until demand is satisfied.
S− Once demand is met, motor ramps down to stop.
OFFOFF
100% CFM
COOLING
DEMAND