26
Equipment Available
When SSR is enabled then SSR
Stg 2 lock out is automatically
enabled.
When SSR is disabled then SSR Stg 2
lock-out setting is disabled.
Two-stage heat pump
with:
Two-stages of gas
or oil backup
Modulation furnace
Run heat pump (Y1/Y2).
All backup heat (W1/W2) is
enabled and SSR Stage 2
Lock Out is set between 20 -
120 minutes before the
wake-up set point.
Run HP (Y1/Y2) until a second-stage
demand is needed which is deter
mined by the time / temperature dif
ferential.
Heat pump operation will stop and
changeover and lock-in to W1/W2
heat until set point is reached.
Two stages of gas/oil
heat or modulation
furnace
Run W1 only; W2 is enabled and
SSR Stage 2 Lock Out is set be
tween 20 - 120 minutes before
the wake-up set point.
Run W1 heat and bring on W2 heat until
set point is reached.
Single stage cooling
Run Y1 to wake up set point.
Run Y1 heat until set point is reached.
Single stage cooling
Run Y1 during recovery and en
able Y2 field wake up set point.
Run Y1 and Y2 heat as needed until set
point is reached.