10 BAS-SVX44A-EN
Installation and Wiring
This section provides information about the following:
• Mounting the thermostat and cover removal
• Wiring and wiring diagrams
• Thermostat cover replacement
Mounting the Thermostat and Cover Removal
Before beginning installation, it is recommended to re-read the section, “Pre-Installation,” p. 8 and
then ensure that the following conditions are met:
• A wire access hole is available at the thermostat location
• The wires are accessible through the hole
• The wires are attached to the appropriate terminals on the HVAC equipment
• There is continuity (and not more than 2.5 ohms resistance) between the thermostat location
and the HVAC equipment
• The wires are accurately labeled or color coded
Mounting the Backplate
WARNING
Hazardous voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power cannot be inadvertently energized. Failure to
disconnect power before servicing could result in death or serious injury.
NOTICE
Equipment damage!
Applying excessive voltage to the thermostat can permanently damage it.
To mount the backplate:
1. Shut off the power to all HVAC equipment. If the security screw was previously installed,
remove it (refer to
Figure 1, p. 11).
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