Sensor Wiring - Tekmar 403 Installation & Operation Manual

Front Low Voltage Wiring Diagram ---- --- -- - -- -- -- --- ---- ---- ----- -- -- ---------------- --- -- --- ---- ---
Mix Supply
Sensor 082
Outdoor
Boiler Supply
Sensor
Sensor 082
070
DHW Tank
Sensor 082
Setpoint Call
DHW Call
from DHW
Tank Aquastat
(optional)

Sensor Wiring

Mounting the Outdoor Sensor - ---- ------ ---- -- - -- - - --- -- -- -- ---- -------------- ----- --- -- ---- --- -- -- --
Note: The temperature sensor (thermistor) is built into the
sensor enclosure.
• Remove the screw and pull the front cover off the
enclosure.
• The sensor can either be mounted directly onto a
wall or a 2" x 4" electrical box. When the senor is wall
mounted, the wiring should enter through the back
or bottom of the enclosure. Do not mount the sensor
with the conduit knockout facing upwards as rain could
enter the enclosure and damage the sensor.
Sensor with rear
entry wiring
------ -- - - - - - - - - -- -- -- -- --- -- -- -- -- -- --- -- -- -- -- -- --- -- -- -- -- -- -- --
tekmarNet ® 2 Thermostats
Made in Canada tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2
Zone 1 Zone 2
Menu Item
House Control 403
------ ----- - - - - - -- - - - - -- -- -- -- -- -- --- -- -- -- -- -- --- -- -- -- -- -- --- -- -- -- -- -
Sensor with bottom
entry wiring
7 of 32
C Opn Cls
Zone 3 Zone 4 Floating Action
Input Power Use at least 167°F
(75°C) conductors
C R
R
C
24 V (ac) Transformer 009
• In order to prevent heat transmitted through the wall
from affecting the sensor reading, it may be necessary
to install an insulating barrier behind the enclosure.
• The Outdoor Sensor should be mounted on a wall
which best represents the heat load on the building (a
northern wall for most buildings and a southern facing
wall for buildings with large south facing glass areas).
The sensor should not be exposed to heat sources
such as ventilation or window openings.
• The sensor should be installed at an elevation above
the ground that will prevent accidental damage or
tampering.
24 V (ac) Floating
Action Actuator
Com
Open
Close
tekmarNet ® 4 Expansion to
Wiring Centers, Timers, or
User Switch
tN4 Mix
Expansion
tN4 Boil
Expansion
Modulating
Boiler
2
1
One or Two Stage
Boiler T-T
L
N
Sensor mounted
onto 2" x 4"
electrical box
© 2011 D 403 - 07/11
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