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GREYSTONE TLDF Series Flexible Cable Duct Average Low Limit Thermostat Instruction Manual

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Flexible Cable Duct Average

Low Limit Thermostat

TLDF Series - Installation Instructions

INTRODUCTION

The ﬂexible cable duct average temperature thermostat incorporates numerous

precision thermistor temperature sensors and provides a Form C relay output (NO/NC)

with an adjustable setpoint. The sensors are encapsulated at equal distances along the

cable assembly and is available in various lengths. All probes provide excellent heat

transfer, fast response and resist moisture penetration.Two enclosure styles are available.

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

The temperature sensor installs directly into any air duct with several lengths available for a wide range of duct widths/diameters. Please 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 for the probe.

Unroll the sensing cable probe, being careful not to kink the wire and feed 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 two #10 x 25 mm (1”) self tapping screws (not provided). Tighten

screws until the enclosure is tight against the duct and that there is no movement of the enclosure as shown in Figure 1. A foam gasket on the

back of the enclosure provides a tight seal against any air leaks.

Install two lengths of hanger strap, securing to the ﬂoor and ceiling of the duct.

The cable probe can easily be shaped to ﬁt any duct size but observe a minimum bend radius

Figure 1

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 cable probe needs to be fastened onto hangers

using tube clamps or wire ties and should be secured every 100 cm or 3' maximum to prevent

movement of the wire and prevent wear. If sensor is to be used in high velocity or vibration

environment use of rigid style duct probe is recommended. 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

Figure 2

Hanger Straps

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 available.

Make wire connections as per the“Wiring”illustrations on Page 2.

Swing door closed until securely latched. For added security, two screws are provided that may be

installed in the integrated screw tabs. See Figure 5.

Figure 5

Figure 3

Figure 4

Thread adapter and

cable gland ﬁtting

EMT Connector

Page 1

IN-GE-TLDFXXX-003

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General	Details
Name	GREYSTONE TLDF Series Flexible Cable Duct Average Low Limit Thermostat Instruction Manual
Make	Greystone
Language	English
Filetype	PDF (Download)
File size	0.19 MB

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Greystone TLDF Flexible Duct Average Manual: Questions and Answers

What do the NO NC and COM terminals mean on this thermostat?

Form C relay output with normally open, normally closed, and common terminals. Instruction Manual, p. 1

What is the minimum bend radius for the Greystone TLDF Flexible Duct Average cable probe?

4 inches to prevent damage to the wire or sensors. Instruction Manual, p. 1

How do I mount the Greystone TLDF Flexible Duct Average sensor in a duct?

Drill a 9.5 to 12 mm hole in the duct wall and feed the cable through until flush.

Select a location at least 1.5 m from elbows, dampers, filters or restrictions.
Avoid areas with air stratification, vibration or rapid temperature changes.
Drill a 9.5 to 12 mm hole in the duct wall.
Unroll the cable carefully and feed it through the hole until the enclosure sits flush.
Secure the enclosure with two #10 x 25 mm self tapping screws until tight.
Install two lengths of hanger strap from floor to ceiling of the duct. Instruction Manual, p. 1