GREYSTONE TLOSF24X01 TLOS Series Outside Low Limit Thermostat Instruction Manual

GREYSTONE TLOSF24X01 TLOS Series Outside Low Limit Thermostat

Product Information: Outside Low Limit Thermostat

The Outside Low Limit Thermostat is a single point outside air low limit thermostat that comes with a precision thermistor temperature sensor. It provides a Form C relay output (NO/NC) with an adjustable setpoint. The probes are designed to provide excellent heat transfer, fast response, and are potted to resist moisture penetration. A hinged and gasketed weatherproof Polycarbonate enclosure is provided for ease of installation.

Before Installation

Read the instructions carefully before installing and commissioning the thermostat. Do not use the product 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. It is important not to exceed the device ratings.

Mounting

Select a suitable mounting spot on an exterior wall where the temperature sensor is best protected from direct exposure to sunlight, wind, etc., preferably on a north-facing wall. Do not mount the sensor near opening windows, supply/exhaust air louvres, or other known air disturbances. Avoid areas where the sensor is exposed to vibrations or rapid temperature changes. The temperature sensor provides a connection hole for 1/2 conduit. Run a length of conduit through the exterior wall and seal it. Use 14-24 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 sensor installs directly on an exterior wall using the two integrated mounting holes provided on the enclosure. Select the best mounting technique based on the exterior wall material. The two mounting holes are suitable for a #10 size screw (not supplied). The sensor fitting must be pointing down. 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 2. 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 that weatherproof conduit or cable gland fittings be used. An optional 1/2 NPT to M16 thread adapter and cable gland fitting is available.

Make wiring 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. Select a suitable mounting spot on an exterior wall where the temperature sensor is best protected from direct exposure to sunlight, wind, etc. preferably on a north facing wall. Do not mount the sensor near opening windows, supply/exhaust air louvres or other known air disturbances. Avoid areas where the sensor is exposed to vibrations or rapid temperature changes. The temperature sensor provides a connection hole for 1/2″ conduit. Run a length of conduit through exterior wall and seal. Use 14-24 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 sensor installs directly on an exterior wall using the two integrated mounting holes provided on the enclosure. Select the best mounting technique based on the exterior wall material. The two mounting holes are suitable for a #10 size screw (not supplied). The sensor fitting must be pointing down. See Figure 1. 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 2. 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 3. It is recommended that weatherproof conduit or cable gland fittings be used. An optional 1/2″ NPT to M16 thread adapter and cable gland fitting is available. Make wiring 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 4.

Product Usage Instructions

The Outside Low Limit Thermostat is designed to regulate temperature outside a building. It should be installed on an exterior wall in a suitable location where it is protected from direct exposure to sunlight, wind, etc., preferably on a north-facing wall. Installation should be carried out by a qualified technician in accordance with national and local codes. It is important to read the installation instructions carefully before installing and commissioning the thermostat. The temperature sensor provides a connection hole for 1/2 conduit. Run a length of conduit through the exterior wall and seal it. Use 14-24 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 sure that all connections are made in accordance with national and local codes. Swing the door closed until it is securely latched for added security. The product comes with two screws that may be installed in the integrated screw tabs for added security. The product should not be used 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. It is important not to exceed the device ratings. Refer to the wiring illustrations on Page 2 for making wiring connections. The product is designed to regulate temperature outside a building and comes with an adjustable setpoint.

INTRODUCTION

The single point outside air low limit thermostat incorporates a precision thermistor temperature sensor and provides a Form C relay output (NO/NC) with an adjustable setpoint. All probes are constructed to provide excellent heat transfer, fast response and are potted to resist moisture penetration. A hinged and gasketed weatherproof Polycarbonate enclosure is provided for ease of installation.

BEFORE INSTALLATION

Read these instructions carefully before installing and commissioning the thermostat. 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.

WIRING

• 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 5.
• 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 6.
• 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 6.
• 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 7.
• The setpoint differential has 3 jumper selectable settings (Low/Mid/High). Set jumper to desired differential as shown in Figure 9.
• To set the switching setpoint, turn the setpoint potentiometer to the desired temperature setting as shown in Figure 8.
• Once all connections settings are made and checked, power can be applied.

SPECIFICATIONS

• 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 – Auto reset
• Setpoint Operation: . ……………………….Single-turn knob-pot on PCB
• Adjustable Setpoint: ……………………….-4 to 10°C (25 to 50°F)
• Te mperature Differential : ………………Low: 1.1°C (2°F) Mid: 2.8°C (5°F) High: 5.6°C (10°F) Jumper selectable
• Temperature Sensor: ………………………10K ohm curve matched precision thermistor
• Sensor Accuracy: ……………………………..±0.2°C, 0 to 70°C (±0.36°F, 32 to 158°F)
• Probe Sensing Range: …………………….-10 to 50°C (14 to 122°F)
• Probe Material : …………………………………Machined aluminum
• Probe Dimensions: ………………………….25.4 mm x 25.4 mm (1″ x 1″)
• Wire Material: ……………………………………PVC insulated, parallel bonded
• Operating Conditions: ……………………-40 to 50°C (-40 to 122°F), 5 to 95% RH, non-condensing
• Storage Conditions: ………………………..-40 to 70°C (-40 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 adaper (1/2″ NPT to M16) and cable gland available
• Country of Origin: ……………………………Canada

DIMENSIONS

Copyright © Greystone Energy Systems,
Inc. All Rights Reserved
Phone : +1 506 853 3057
Web: www.greystoneenergy.com
IN-GE-TLOSXXX-004

References

• Greystone Energy Systems – HVAC Sensors and Transmitters

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