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INSTALL THE SENSORS
SYSTEM SENSOR INSTALLATION
LOCATING THE SYSTEM SENSOR
•
Put the System sensor approximately 10' feet past the last heating/cooling unit
on the common supply header but before any takeoffs.
•
The sensor must be located where it sees the output of all the stages. If a unit
is piped so that the sensor does not see its output, the SQ-Elite-8T will not
sequence the units correctly.
•
Only use a Standard Brass Tube sensor (HTC #904250-00).
•
The sensor wires can be extended up to 500' using a shielded 2-conductor
cable (Belden #8760 or equivalent (#18/2)). Do not ground the shield at the
sensor but at the panel using one of the terminals marked with an "O".
•
Do not run sensor wires in conduit with line voltage wiring.
IMMersIon heatIng systeM sensor (hss) InstallatIon
•
Install a 3/8"ID immersion well (HT #350147-00 or 904011-00).
•
Insert the sensor probe of the supplied sensor into the well.
strap-on heatIng systeM sensor (hss) InstallatIon
•
Strap the sensor to the pipe using metal clamps. Do not over tighten the
clamp. The sensors's concave surface must be facing the pipe for better
temperature reading.
•
Strap pipe insulation around the sensor and pipe.
OUTDOOR SENSOR INSTALLATION
•
Only use the Heat-Timer sensor included with the unit (HT# 904220-00).
•
Locate the sensor in the shade on the north side of the building. The sensor
should never be in direct sunlight.
•
Be sure the location is away from doors, windows, exhaust fans, vents, or
other possible heat sources.
•
The sensor should be mounted approximately 10' feet above ground level.
•
Adhere the Outdoor Label provided to the back of the sensor base.
•
Use the Enclosure Base bottom knockout for the conduit. Use the locknut to
hold the conduit and enclosure base together. Screw the cover to the base.
•
If screws are used to affix the enclosure to the wall, make sure to seal around
the sensor and wall except from the bottom.
•
The sensor wires can be extended up to 500' using shielded 2-conductor cable
(#18/2). Do not ground the shield at the sensor but at the control using the
terminal marked with an "O".
•
Do not run sensor wires in conduit with line voltage wiring.
The SQ-Elite is an operating control only. All equipment must have
all safety and limit controls required by code. It is the responsibility
of the installer to verify that all the safety limits are working properly
before the SQ-Elite is installed.
Determining the proper location for the Outdoor Sensor is very important. The SQ-Elite will base its operation
on the outdoor temperature information it receives from this location. If the sensor is in the sun, or covered
with ice, its reading will be different from the actual outdoor temperature.
SQ-Elite-8T & SQ-Elite-EXT Installation Manual
WARNING
If the System Sensor can not sense the
correct system water temperature being
supplied to the building, the SQ-Elite
will not provide comfortable heat/cool
levels. Be sure that it is located on the
main supply pipe which can not easily be
isolated from the system.
Seal around
sensor and wall
Mounting
screws
location
ALERT
Immersion Heating System Sensor
Immersion Well
3/8" ID 1/2" NPT
Shield
Heating System
Sensor
Strap-On Heating System Sensor
Common Supply Pipe
Pipe Insulation
Shield
ALERT
Outdoor Sensor
Outdoor
drip-hole
Conduit
9
Common Supply Pipe
Sensor Probe
Sensor Probe
Outdoor
Sensor
snap-in
location
Shield
not connected
Outdoor Label
on back of Sensor
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