Lennox ComfortSense 7500 Installation And Setup Manual page 17

Table 1. Smooth Set back Recovery (SSR) & SSR Stage 2 Lock Out Operation (continued)
Equipment Available
2 stage HP with 1 stage
gas/oil backup
2 stage HP with 2 stages
gas/oil backup or modula­
tion furnace
2 stages gas/oil heat or
modulation furnace
1 stage cooling
2 stage cooling
SSR = Enabled;
SSR Stage 2 lock out =
enabled
Run HP (Y1/Y2) only; all
backup heat (W1/W2) en­
abled 20 - 120 min before
wake up setpoint.
Run HP (Y1/Y2), all backup
heat (W1/W2) enabled 20 -
120 min before wake up set­
point.
Run W1 only; W2 enabled 20
- 120 min before wake up set­
point.
Run Y1 to wake up set point.
Run Y1 during recovery en­
able Y2 field wake up set
point.
SSR = Enabled;
SSR Stage 2 lock-out = disabled (off)
Run HP (Y1/Y2) until a 2nd stage de­
mand is needed (by time/temp. differen­
tial); then HP operation must stop &
changeover and lock in to W1 heat until
setpoint reached.
Run HP (Y1/Y2) until a 2nd stage de­
mand is needed (by time/temp. differen­
tial); then HP operation must stop &
changeover and lock in to W1/W2 heat
until setpoint reached.
Run W1 heat and bring on W2 heat until
setpoint reached.
Run Y1 heat until setpoint reached.
Run Y1 & Y2 heat as needed until set­
point reached.
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