©2017 MrPEX® Systems 519_D - 04/17
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Choose the placement of the thermostats early in the construction process to
enable proper wiring during rough-in.
Consider the following:
• Interior Wall.
• Keep dry. Avoid potential leakage onto the control.
• Relative Humidity less than 90%. Non-condensing environment.
• No exposure to extreme temperatures beyond 32-122°F (0-50°C).
• No draft, direct sun, or other cause for inaccurate temperature readings.
• Away from equipment, appliances, or other sources of electrical interference.
• Easy access for wiring, viewing, and adjusting the display screen.
• Approximately 5 feet (1.5 m) off the finished floor.
• The maximum length of wire is 500 feet (150 m).
• Strip wire to 3/8” (10 mm) for all terminal connections.
• Use standard 4 conductor, 18 AWG wire.
Installation Location
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Materials Required
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• 18 AWG LVT Solid Wire
(Low Voltage Connections)
Removing The Thermostat Base
To remove the thermostat base:
• Locate the tab on the bottom of the
thermostat.
• Push the tab with either your thumb or
with a screwdriver.
• Lift the thermostat front away from the
thermostat’s base.