Definitions; Rough-In Wiring - Tekmar tN4 538 Wiring Brochure

Defi nitions
The following defined terms and symbols are used throughout this manual to bring attention to the presence of hazards of
various risk levels, or to important information concerning the life of the product.
INSTALLATION
CATEGORY II
Caution
Improper installation and operation of this control could result
in damage to the equipment and possibly even personal
injury or death. It is your responsibility to ensure that this
control is safely installed according to all applicable codes
and standards. This electronic control is not intended for
uses as a primary limit control. Other controls that are

Rough-In Wiring

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 92% to 104°F (40°C), and 50%
above 104°F (40°C). Non-condensing environment.
• No exposure to extreme temperatures beyond 36-122°F
(2-50°C).
© 2008 W 538 - 12/08
– Caution: Refer to accompanying documents.
– Caution: Refer to accompanying documents.
– Local level appliances.
2 Cond. / 18 AWG
4 Cond. / 18 AWG
intended and certified as safety limits must be placed into
the control circuit. Do not attempt to service the control.
Refer to qualified personnel for servicing. There are no
user serviceable parts. Attempting to do so voids warranty
and could result in damage to the equipment and possibly
even personal injury or death.
• 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 ft. (1.5 m) off the finished floor.
Use standard 18 AWG wire for the thermostat power, stages,
tN4 and sensor connections.
Refer to the diagram below to determine the number of
conductors to run from each piece of equipment to the
thermostat location.
Sensor 1
1st Stage Heat
24 V (ac) Power
tN4 Network
2 of 8
Note: When multiple wires
run to the same equipment
location, wiring conductors
can share one wire jacket.
Zone Manager