GREYSTONE TLDCB24J01 Flexible Copper Duct Average Low Limit Thermostat Instruction Manual
- June 12, 2024
- Greystone
Table of Contents
GREYSTONE TLDCB24J01 Flexible Copper Duct Average Low Limit Thermostat
Product Information
The Flexible Copper Duct Average Low Limit Thermostat, TLDC Series, is a temperature sensor that incorporates precision thermistor temperature sensors. It features a Form C relay output (NO/NC) with an adjustable setpoint. The sensor is encapsulated in a 7.94 mm (0.3125) OD soft copper tube and is available in various lengths. It provides excellent heat transfer, fast response, and resistance to moisture penetration.
Product Usage Instructions
Before installing and commissioning the temperature sensor, please read the following instructions carefully to avoid product damage and ensure proper usage:
- Do not use the temperature sensor in explosive or hazardous environments, with combustible or flammable gases, as a safety or emergency stop device, or in any other application where failure of the product could result in personal injury.
- Ensure that you do not exceed the device ratings.
BEFORE INSTALLATION
Read these instructions carefully before installing and commissioning the temperature sensor. Failure to follow these instructions may result in product damage. Do not use in an explosive or hazardous environment, with combustible or flammable gases, as a safety or emergency stop device or in any other application where failure of the product could result in personal injury. Do not exceed the device ratings.
Mounting
To mount the sensor:
- Select a suitable installation area in the middle of the air duct wall. Avoid areas with air stratification or exposure to vibrations or rapid temperature changes.
- Drill a 9.5 – 12 mm (3/8 – 1/2) hole at the selected spot.
- Uncoil the copper probe and slide it into the drilled hole until the enclosure is flush against the duct. The airflow direction is not important.
- Secure the enclosure to the duct using #10 x 25 mm (1″) self-tapping screws (not provided). Tighten the screws until the enclosure is tight against the duct and ensure there is no movement of the enclosure.
- Use the foam gasket provided on the back of the enclosure to ensure a tight seal against any air leaks.
The probe can be shaped to fit any duct size, but ensure a minimum bend radius of 4 to prevent damage to the wire or sensors. Criss-cross the duct multiple times so that the probe covers a large section of the duct. Fasten the probe onto hangers using tube clamps or wire ties.
The enclosure has a hinged cover with a latch. To open the cover, pull
slightly on the latch on the right side of the enclosure while pulling on the
cover.
A 1/2 NPT threaded connection hole is provided in the bottom of the enclosure.
Screw the EMT connector or cable gland connector in until tight. It is
recommended to use weatherproof conduit or cable gland fittings. A 1/2 NPT to
M16 thread adapter and cable gland fitting is also available.
The sensor installs directly into any air duct with several lengths available
for a wide range of duct widths/diameters. Select a suitable installation area
in the middle of the duct wall. To achieve the best reading, do not place in
an area where air stratification may be present. Mount the sensor at least 1.5
m (5 ‘) in either direction from elbows, dampers, filters or other duct
restrictions. Avoid areas where the sensor is exposed to vibrations or rapid
temperature changes.
Once a suitable spot is selected, drill a 9.5 – 12 mm (3/8” – 1/2“) hole.
Uncoil the copper probe and slide into the drilled hole until the enclosure is
flush against the duct. The airflow direction is not important. Secure the
enclosure to the duct with #10 x 25 mm (1”) self tapping screws (not
provided). Tighten screws until the enclosure is tight against the duct and
ensure that there is no movement of the enclosure as shown in Figure 1.
A foam gasket is provided on the back of the enclosure that provides a tight
seal against any air leaks.
The probe can easily be shaped to fit any duct size, but observe a minimum
bend radius of 4” to prevent damage to the wire or sensors. Criss-cross the
duct multiple times so that the probe covers a large section of the duct. The
probe needs to be fastened onto hangers using tube clamps or wire ties. See
Figure 2.
The enclosure has a hinged cover with a latch. Open the cover by pulling
slightly on the latch on the right side of the enclosure, at the same time
pulling on the cover, as illustrated in Figure 3.
A 1/2″ NPT threaded connection hole is provided in the bottom of the
enclosure. Screw the EMT connector or cable gland connector in until tight.
See Figure 4. It is recommended that weatherproof conduit or cable gland
fittings be used. A 1/2″ NPT to M16 thread adapter and cable gland fitting is
availble.
Make wiring connections as per the “Wiring” illustrations on Page 2.
Swing door closed until securely latched. For added security, 2 screws are
provided that may be installed in the integrated screw tabs. See Figure 5.
Wiring
Refer to the wiring illustrations on Page 2 for making the necessary wiring connections.
- Deactivate the 24 Vac/dc power supply until all connections are made to the device to prevent electrical shock or equipment damage.
- Use 14-22 AWG shielded wiring for all connections and do not locate the device wires in the same conduit with wiring used to supply inductive loads such as motors. Make all connections in accordance with national and local codes.
- The temperature thermostat comes with the temperature sensor pre-wired to the PCB. If removal is required for installation then it may be re-wired as shown in Figure 7.
- Pull at least six inches of control wire into the enclosure, then complete the wiring connection according to the wire diagram for the applicable power supply as shown in Figure 8.
- Connect the DC positive or the AC voltage hot side to the PWR terminal. The supply common is connected to the COM terminal. See Figure 8.
- The relay has both Normally Open (NO) and Normally Closed (NC) contacts available. The relay output is available on the NO/COM/NC terminal. Make connections before applying power as shown in Figure 9.
- The setpoint differential has 3 jumper selectable settings (Low/Mid/High). Set jumper to desired differential as shown in Figure 11.
- To set the switching setpoint, turn the setpoint potentiometer to the desired temperature setting as shown in Figure 10.
- Once all connections settings are made and checked, power can be applied.
SPECIFICATIONS
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Power Supply:…..12 to 28 Vac/dc
-
Consumption:……50 mA max
-
Relay Contacts:……SPDT, Form C contacts (N.O. and N.C.)
5 Amps @ 30 Vac/250 Vac resistive
1.5 Amps @ 30 Vdc/250 Vac inductive -
Relay Action:…..Activates on temperature fall
-
Setpoint Operation:……Single-turn knob-pot on PCB
-
Adjustable Setpoint:…-4 to 10°C (25 to 50°F)
-
Setpoint Temperature:….Low/Mid/High jumper selectable
Differential 1.1, 2.8, 5.6°C (2, 5, 10°F) -
Temperature Sensor:….10K ohm curve matched precision thermistor
-
Sensor Accuracy:…..±0.2°C, 0 to 70°C (±0.36°F, 32 to 158°F)
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Probe Sensing Range:…….-20 to 60°C (-4 to 140°F)
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Probe Material:…….Soft copper
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Probe Diameter:…..7.94 mm (0.3125″)
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Probe Length:…..1800 mm, 3600 mm, 6100 mm, 7300 mm (6′, 12′, 20′, 24′)
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Wire Material:…..FT-6 Plenum-rated cable
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Operating Conditions:…….-10 to 50°C (14 to 122°F), 5 to 95% RH, non-condensing
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Storage Conditions:……-30 to 70°C (-22 to 158°F), 5 to 95% RH, non-condensing
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Wiring Connections:…..Screw terminal block (14 to 22 AWG)
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Enclosure:…Grey Polycarbonate UL94-V0, IP65 (NEMA 4X)
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Optional thread adapter (1/2″ NPT to M16) and cable gland fitting
-
Country of Origin:..Canada
DIMENSIONS
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