CaptiveAire RTULink, Инструкция по установке, эксплуатации и обслуживанию

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Outside Air Sensor
The outside air thermistor will measure the temperature of ambient atmospheric air. It should be mounted in the RTU
outside air intake hood. This location is ideal as it is important to keep this sensor out of direct sunlight and weather to
improve the accuracy of readings. If the thermistor cannot be mounted in the intake hood, choose a location on the
outside of the RTU that has the highest percentage of shade throughout the day. Two of the provided self-tapping screws
should be used to secure the sensor to its final location using the mounting flanges.
Label the wires for the outside air thermistor and wire it to the positive (+) and common (C) terminals (thermistor input is
not polarity sensitive)
labeled “OUTSIDE AIR TEMP SENSOR 10kΩ” on the TO RTU side of the RTULink control board.
If a penetration is made through an exterior panel of the RTU, ensure it is sealed watertight with caulk, a grommet, or
similar.
Return Air Sensor
The return air thermistor will be
measuring the temperature of
the air in the return duct.
Remove the side panels of the
RTU in order to access the
return duct. The thermistor
should be mounted in a
location internal to the RTU
that is not affected by incoming
outdoor air through the intake
(if applicable). It should also
be mounted in a location that
does not interfere with
operation of the outside air
damper and/or economizer
gears and damper blades.
Two of the provided self-
tapping screws should be used
to secure the sensor to its final
location using the mounting
flanges.
An alternative to mounting the
sensor in the unit is to mount it
in the return duct or return
diffusers in the space, which will provide the most accurate reading.
A ½” hole should be drilled in the return duct so that
the sensor probe can be inserted through the duct and into the return airstream. Two of the provided self-tapping screws
should be used to secure the sensor to the duct using the mounting flanges.
Label the wires for the return air thermistor and wire it to the positive (+) and common (C) terminals (thermistor input is not
polarity sensitive)
labeled “RETURN AIR TEMP SENSOR 10kΩ” on the RTU side of the RTULink control board.
Discharge Air Sensor
The discharge air sensor will measure the temperature of the air being supplied to the space by the RTU. Remove the
side panels of the RTU in order to access the discharge area (usually directly beneath the blower or burner). It is
important to mount this sensor as far downstream from the heating and/or cooling elements as possible in order to obtain
the most accurate readings. Two of the provided self-tapping screws should be used to secure the sensor to its final
location using the mounting flanges.
An alternative to mounting the sensor in the unit is to mount it in the discharge duct or diffusers in the space, which will
provide the most accurate reading. A 1/2
” hole should be drilled in the discharge duct so that the sensor probe can be
inserted through the duct and into the supply airstream. Two of the provided self-tapping screws should be used to
secure the sensor to the duct using the mounting flange.
If mounted near the heating components, ensure that at least 9”
of space exists between the probe and the burner elements.
Label the wires for the discharge air thermistor and wire it to the positive (+) and common (C) terminals (thermistor input is
not polarity sensitive)
labeled “DISCHARGE AIR TEMP SENSOR 10kΩ” on the RTU side of the RTULink control board.
Figure 4. Control Kit Thermistors
– RTULink Wiring