GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

FLEXIBLE COPPER DUCT AVERAGE LOW LIMIT THERMOSTAT

TLDC SERIES

CABLE GLAND FITTING

THREAD ADAPTER 1/2” NPT TO M16

ACCESSORIES - INCLUDED WITH F ENCLOSURE OPTION

PRODUCT DESCRIPTION

The multi point duct average temperature

thermostat incorporates several precision

thermistor temperature sensors and provides 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 probe and is available

in various lengths (see ordering chart). All probes

provide excellent heat transfer, fast response and

resistance to moisture penetration. A hinged and

gasketed Polycarbonate enclosure is included for

ease of installation.

TYPICAL INSTALLATION

For complete installation and wiring details,

please refer to the product installation

instructions.

The duct average probes are installed through

a hole in the side of the duct to monitor an

average temperature within the duct. Select

a probe length that allows for criss-crossing

the duct multiple times. Install the probes in a

straight section of duct at a suitable distance

downstream from any heating, cooling or

humidification elements.

The enclosure provides mounting tabs for ease

of installation.

POWER SUPPLY

12 to 28 Vac/dc

SENSOR ACCURACY

±0.2°C, 0 to 70°C (±0.36°F, 32 to 158°F)

PROBE SENSING RANGE

-20 to 60°C (-4 to 140°F)

PROBE MATERIAL

Soft copper

PROBE DIAMETER

7.94mm (0.3125”)

STANDARD LENGTHS

1800mm, 3600mm, 6100mm, 7300mm (6’, 12’, 20’, 24’)

WIRE MATERIAL

FT-6 plenum rated cable

CONSUMPTION

50 mA max

RELAY CONTACTS

SPDT, Form C contacts (N.O. and N.C.)

5 Amps @ 30 Vdc/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: 1.1°C (2°F) Mid: 2.8°C (5°F) High: 5.6°C (10°F)

Jumper selectable

TEMPERATURE SENSOR

10,000Ω curve matched precision thermistor

SENSOR ACCURACY

±0.2°C, 0 to 70°C (±0.36°F, 32 to158°F)

AMBIENT OPERATING RANGE

-10 to 50°C (14 to 122°F), 5 to 95 %RH, non-condensing

STORAGE CONDITIONS

-30 to 70°C (-22 to 158°F), 5 to 95 %RH, non-condensing

WIRING CONNECTIONS

Screw terminal block (14 to 22 AWG)

ENCLOSURE

B: Grey polycarbonate UL94-V0, IP65 (NEMA 4X)

F: Same as B with thread adapter (1/2” NPT to M16) and cable gland fitting

COUNTRY OF ORIGIN

Canada

SPECIFICATIONS

112.5 mm

4.43"

99.7 mm

3.93"

Various Probe Lengths

See Specifications

116.5 mm

4.58"

0.5" NPT

Foam Gasket

Soft Copper

53.7 mm

2.11"

7.94 mm

0.312"