2
IOM-T-482
2125
© 2021 Watts
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Wiring Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Choosing a Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Electrical Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Wiring the tN4 Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Troubleshooting the Wiring. . . . . . . . . . . . . . . . . . . . . . . . . .9
Testing the Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Before You Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Compatible Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Compatible Home Automation Systems. . . . . . . . . . . . . . .10
Reporting Enable DIP Switch. . . . . . . . . . . . . . . . . . . . . . . . .10
LED Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
tekmarNet
®
Home Automation Protocol. . . . . . . . . . . . . . .10
Home Automation Commands. . . . . . . . . . . . . . . . . . . . . .11
Thermostat Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Do not apply power to these terminals.
Serious control damage will result.
Earth ground
The location of the tN4 Gateway is important. To ensure proper wiring during rough in, select an appropriate location for
the control early in the construction process. Consider the following:
• Do not expose the tN4 Gateway to temperatures beyond
32 to 122°F (0 to 50°C).
• Keep dry. Avoid potential leakage onto the control.
• Relative humidity ≤ 92% to 104°F (40°C), down to 50%
above 104°F (40°C).
• Provide adequate ventilation.
• Keep away from equipment, appliances or other sources
of electrical interference.
• Mount the enclosure to a solid backing.
• Provide easy access for wiring and viewing.
• Mount approximately 5 feet (1.5 m) off the finished floor.
• Mount near the zone managers, reset modules, tN4
thermostats, tN4 setpoint controls, and mixing expan-
sion modules. The total wire length of each tN4 bus
cannot exceed 5000 feet.
• Each tN4 bus consists of a pair of wires (tN4 and C).
• The tN4 Gateway can accept up to 5 tN4 buses.
• Use a Category 5 cable up to or less than 150 feet
(45 m) in length to connect the tN4 Gateway to the
home automation equipment.
To avoid serious personal injury and damage to the equipment:
• Improper installation and operation of this control could
result in damage to the equipment and possibly even
personal injury or death.
• This electronic control is not intended for use as a
primary limit control. Other controls that are intended
and certified as safety limits must be placed into the
control circuit.
• Do not attempt to service the control. Apart from any
field replaceable fuse(s) there are no user serviceable
parts. Attempting to do so voids warranty.
It is your responsibility to ensure that this control is safely installed according to all applicable codes and
standards. tekmar is not responsible for damages resulting from improper installation and/or maintenance.
• Read Manual and all product labels BEFORE
using the equipment. Do not use unless you
know the safe and proper operation of this
equipment.
• Keep this Manual available for easy access
by all users.
• Replacement Manuals are available at
tekmarControls.com
• Disconnect all power before opening the control.
• It is the installers responsibility to ensure that
this control is safely installed according to all
applicable codes and standards.
Table of Contents
Important Safety Information
Wiring Symbols
Wiring
Choosing a Location
