GREYSTONE TLOBB24X01 Outside Low Limit Thermostat with Sun and Windshield Instruction Manual

: October 30, 2023
: Greystone

Table of Contents

GREYSTONE TLOBB24X01 Outside Low Limit Thermostat with Sun and Windshield
Product Information: Outside Low Limit Thermostat with Sun and
Before Installation
Mounting
INTRODUCTION
WIRING instructions
SPECIFICATIONS
DIMENSIONS
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

GREYSTONE TLOBB24X01 Outside Low Limit Thermostat with Sun and Windshield

Product Information: Outside Low Limit Thermostat with Sun and

Windshield (TLOB Series)

The Outside Low Limit Thermostat with Sun and Windshield is a single point outside air low limit thermostat that incorporates a precision thermistor temperature sensor. It provides a Form C relay output (NO/ NC) with an adjustable setpoint. The probes are constructed to provide excellent heat transfer, fast response, and are potted to resist moisture penetration. The device also comes with a sun and wind shield that is integrated into a hinged and gasketed weatherproof Polycarbonate enclosure.

Before Installation

Read these instructions carefully before installing and commissioning the thermostat. 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

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, pull on the cover. A 1/2 NPT connection hole is provided in the back of the enclosure. Connect the EMT connector with a locknut. It is recommended that a weatherproof conduit fitting be used.

Wiring
Make wiring connections as per the wiring illustrations on Page 2 of the manual. Use shielded wiring and follow all national and local codes.

Temperature Sensor Wiring to PCB (Factory Wiring)
Connect as shown in Figure 5. There is no polarity.

Relay Output Wiring
Connect as shown in Figure 7. The differential is set by adjusting the setpoint differential setting as shown in Figure 9.

Power Supply Wiring
Connect as shown in Figure 8. The setpoint can be adjusted as per the temperature range mentioned in the manual.

Sensor Hub
The Sensor Hub is shown in Figures 2, 3, and 4 of the manual.

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 sun and wind shield is integrated into a hinged and gasketed weatherproof Polycarbonate enclosure.

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.

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 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 connection hole is provided in the back of the enclosure. Connect the EMT connector with a locknut. See Figure 3. It is recommended that a weatherproof conduit fitting be used.
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.

WIRING instructions

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)
Temperature 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:…………………….-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