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and Back Up Heat will be displayed.
4. Press the DOWN arrow button to adjust the thermo-
stat below room temperature. The heating system
should stop operating.
3.5.4. Check the Back Up Heating
System (Heat Pump Systems
Only)
The Back Up Heat bypasses the Heat Pump to use
the heat source wired to E & W2 terminals of the ther-
mostat. Back Up is typically used when compressor
operation is not desired, the user prefers to utilize the
back-up heat only or the compressor is not able to sat-
isfy the demand for heat to the user's desire.
1. Press the SYSTEM button one or more times to se-
lect Back Up Heat mode. If the auxiliary heating
system has a standing pilot, be sure to light it.
2. Press the UP arrow button to adjust the thermostat
setting to 1° above room temperature. The AUX
heating system should begin to operate. Back Up
should display.
NOTE: If compressor lockout is set to ON, the
thermostat will not call for heat until after the
5-minute safety time period and will display the
message A/C return < 5 min. After the 5 min-
utes expire the thermostat will call for Back Up heat.
3. If the system is a multi-stage Back Up heating sys-
tem, adjust the temperature setting to at least 3°
above room temperature to turn on all stages.
4. Press the DOWN arrow button to adjust the thermo-
stat below room temperature. The heating system
should stop operating.
3.6. STEP 5: Getting to
Know Your Thermostat
Before setting up your thermostat, you should fa-
miliarize yourself with its features and user interface.
Your thermostat consists of two parts: the thermostat
chassis and the Mounting Plate. To detach the two
items, gently pull on the thermostat chassis until the
retention tabs release. To attach the thermostat back
onto the Mounting Plate, align the retention tabs on
the Mounting Plate with the retention slots in the ther-
mostat and gently press the two together until the re-
tention tabs click. If the thermostat does not easily
click onto the Mounting Plate, make sure not to press
with excessive force or else damage could occur to the
thermostat and/or Mounting Plate.
8 • Commercial Communicating Programmable Thermostat I&O Manual
WARNING! It is recommended to turn OFF
the HVAC power before removing the thermo-
stat from the Mounting Plate when installed.
3.6.1. Thermostat Buttons
10
Figure 3-4 - Thermostat Buttons and Indicators
Button
1
LEFT Arrow
2
UP Arrow
3
Action Button
4
Mail LED
5
LED
6
RIGHT Arrow
7
DOWN Arrow
8
Energy Button
9
Menu Button
10
Soft Keys
Table 3-2 - Functions of Buttons and Indicators
2
3
1
4
1 5
6
7
9
8
Function
Navigates menu items
Raises temperature setpoint/
changes selected item
Selects action of selected
menu item
Indicates message in Inbox
Indicates curtailment event
is occurring
Navigates menu items
Navigates menu items
Takes user to the Energy
Monitor Screen
Takes user to the Main
Settings Menu
Perform action listed on
LCD above the button
026-1729 Rev 2 15-NOV-2016
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