GREYSTONE TLRPB24C01 Remote Probe Strap On Low Limit Thermostat Instruction Manual
- October 30, 2023
- Greystone
Table of Contents
GREYSTONE TLRPB24C01 Remote Probe Strap On Low Limit Thermostat
Remote Probe Strap-on Low Limit Thermostat
TLRP Series – Installation Instructions
Introduction
The Remote Probe Strap-on Low Limit Thermostat is a device used to monitor and control temperature in pipes where an immersion sensor with thermowell can’t be installed. Before installing and commissioning the thermostat, it is important to read the instructions carefully. Failure to follow the instructions may result in product damage. It is not recommended to 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.
Mounting
The strap-on sensor installs directly onto any pipe where an immersion sensor with thermowell can’t be installed. Once a suitable spot is selected, remove a small section of insulation if present and set aside. It is recommended that thermal compound be used to improve heat transfer. Spread a liberal amount on the pipe Lay probe in thermal compound and secure sensor to pipe using a worm gear clamp (not included). For added protection, it is recommended to wrap probe cable around the pipe 1-2 times. Re-install insulation if present, allowing sensor cable to protrude.
Mount the enclosure on a flat surface in close proximity to the area where the probe is inserted on the pipe. Secure the enclosure with (2) #10 x 25 mm (1) self-tapping screws (not provided). 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.
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.
Wiring
Make wiring connections as per the Wiring illustrations on Page 2.
Specifications
- Power Supply: 12 to 28 Vac/dc
- Consumption: 50 mA max
- Relay Contacts: SPDT, Form C contacts (N.O. and N.C.)
Dimensions
- 112.5 mm x 99.7 mm x 53.7 mm (4.43″ x 3.93″ x 2.11″)
- Probe: Various Lengths
- Cable: 1.524 m (6.00′) FT-6 Rated Plenum Cable, 304 Series S/S,22 AWG
INTRODUCTION
The single point strap-on low limit thermostat incorporates a precision thermistor temperature sensor and provides a Form C relay output (NO/NC) with an adjustable setpoint. The sensor is encapsulated in a 6 mm (0.236”) OD, 304 stainless steel probe and is available in various lengths (see ordering chart). Standard wire length is 5’ (1.5 m). All probes are constructed to provide excellent heat transfer, fast response and are potted to resist moisture penetration. A hinged and gasketed Polycarbonate enclosure is included 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.
MOUNTING
The strap-on sensor installs directly onto any pipe where an immersion sensor
with thermowell can’t be installed.
Once a suitable spot is selected, remove a small section of insulation if
present and set aside. It is recommended that thermal compound be used to
improve heat transfer. Spread a liberal about on the pipe. Lay probe in
thermal compound and secure sensor to pipe using a worm gear clamp (not
included). For added protection it is recommended to wrap probe cable around
pipe 1-2 times as shown in Figure 1. Re-install insulation if present,
allowing sensor cable to protrude.
Mount the enclosure on a flat surface in close proximity to the area where the
probe is inserted on the pipe. Secure the enclosure with (2) #10 x 25 mm (1”)
self tapping screws (not provided). As shown in 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 shown 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. 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, 2 screws are provided that may be installed in the integrated screw tabs. See Figure 5.
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 6.
- 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 7.
- 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 7.
- 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 8.
- 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 10.
- Once all connection 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)
- Setpoint Temperature:……………………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:……………………..-40 to 100°C (-40 to 212°F)
- Probe Material:………………………………….304 Series Stainless Steel
- Probe Diameter:……………………………….6 mm (0.236″)
- Probe Length:……………………………………50 mm, 100 mm, 150 mm 200 mm (2″, 4″, 6″, 8″)
- 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:……………………………………………Grey Polycarbonate UL94-V0, IP65 (NEMA 4X) Optional thread adapter (1/2″ NPT to M16) and cable gland fitting
- Country of Origin:…………………………….Canada
DIMENSIONS
IN-GE-TLRPXXX-003 Copyright © Greystone Energy Systems, Inc. All Rights Reserved Phone: +1 506 853 3057 Web: www.greystoneenergy.com