Honeywell Heat/1Cool User Guide - Page 28

Electronic Thermostat T8011, T8411, T8511, T8611, Sequences of Operation

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Electronic Thermostat (T8011, T8411, T8511, T8611) Sequences of Operation T8011 Programmable Heat Pump Thermostat and T8411 Electronic Heat Pump Thermostat Sequence of Operation The Fan, Heat and Cool outputs are relay controlled. A loss of ac power, or a change in the SYSTEM switch setting can cause the outputs to turn off. Table 2 shows the sequence of operations for the Fan settings and System modes. FAN Switch Settings Auto Auto Table 2. T8011 and T8411 Sequence of Operation. SYSTEM Switch Settings Call for Action Energize Terminals Cool Cool None Cooling O O, Y, G Display Icons None Auto Auto Heat Heat None Stage 1 Heat B B, W1, G None Auto Auto Auto Heat Em. Ht. Em. Ht. Stage 2 Heat None Stage 1 Heat B, W1, W2, G L L, E, G , Aux Ht indicator Em Ht indicator , Em Ht indicator Auto Em. Ht. Stage 2 Heat L, E, W2, G , Em Ht and Aux Ht indicators 70-6627 • 26

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Electronic Thermostat (T8011, T8411, T8511, T8611)
Sequences of Operation
T8011 Programmable Heat Pump Thermostat and
T8411 Electronic Heat Pump Thermostat
Sequence of Operation
The Fan, Heat and Cool outputs are relay controlled. A loss of ac power, or a change in the SYSTEM switch setting can cause the
outputs to turn off. Table 2 shows the sequence of operations for the Fan settings and System modes.
Table 2. T8011 and T8411 Sequence of Operation.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
FAN Switch Settings
SYSTEM Switch Settings
Call for Action
Energize Terminals
Display Icons
Auto
Cool
None
O
None
Auto
Cool
Cooling
O, Y, G
Auto
Heat
None
B
None
Auto
Heat
Stage 1 Heat
B, W1, G
Auto
Heat
Stage 2 Heat
B, W1, W2, G
, Aux Ht
indicator
Auto
Em. Ht.
None
L
Em Ht indicator
Auto
Em. Ht.
Stage 1 Heat
L, E, G
, Em Ht indicator
Auto
Em. Ht.
Stage 2 Heat
L, E, W2, G
, Em Ht and Aux
Ht indicators