2GIG CT100 User Manual

Page 20

second stage of heat pump will turn on and join the irst stage to reach the target.

Target Temperature Recovery -

If the room temperature is beyond the new target temperature minus the

DIFF setting, the irst stage will turn on. Ten seconds later, the second stage will turn on and join the irst stage

to reach the target temperature.

With FAST recovery, both stages stay on until the new target temperature is reached. With ECON recovery,

both stages stay on until the DIFF setting is reached. Then the second stage shuts off and the irst stage stays

on until the new target temperature is reached.

Staging for Heat Pump with 1 or 2 stages of compression and 1 or 2 stages of auxiliary heat
Target Temperature Maintenance -

If the room temperature is within the target temperature minus the DIFF

setting, the auxiliary heat will not be used, just the heat pump (1 or 2 stages) as explained above in “target

temperature maintenance”.

Target Temperature Recovery -

If the room temperature is beyond the new target minus the DIFF setting,

the irst stage of heat pump will turn on, ten seconds later the second stage of heat pump will turn on, ten

seconds later the irst stage of auxiliary heat will turn on. If the new target temperature is then not reached after

15 minutes, the second stage of auxiliary heat will turn on. If the new target temperature is not reached 15

minutes after that, the third stage of auxiliary heat will turn on.

With FAST recovery all stages will stay on until the new target temperature is reached. With ECON recovery

all stages will stay on until the DIFF setting is reached. Then only the heat pump stays on until the new target

temperature is reached.

ELECTRIC vs. GAS or OIL auxiliary heat -

With electric auxiliary heat, the heat pump stays on while the

auxiliary heat is on. With gas or oil auxiliary heat, the heat pump will shut off while the auxiliary heat is on. This

is required by heat pump design.