Siemens Building Technology 188-0034 Thermostat
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Siemens Building Technology 188-0034 Thermostat

Siemens Building Technology 188-0034 Thermostat

The Siemens Building Technology 188-0034 is a professional-grade unit-mounted pneumatic thermostat engineered specifically for technical retrofitting applications. This Retroline replacement for Johnson Controls T-3300-2 provides reliable control for heating and cooling systems in unit ventilators and fan coil units. Utilizing a liquid-filled sensing element with a 96-inch capillary and a 3/8-inch diameter remote bulb, it ensures accurate temperature regulation even in restricted spaces where wall-mounted controls are impractical.

Designed for versatile DA/RA (Direct Acting/Reverse Acting) operations, the 188-0034 operates effectively at 18 psi for heating and 25 psi for changeover. It features a 40 SCIM (11 ml/s) restrictor to maintain consistent air usage and prevent control air trapping when piloting a Limitem. The force balance principle and pneumatic feedback provide the linearity required for precise HVAC management. With an exposed setpoint adjustment ranging from 60 to 85 degrees Fahrenheit, this die-cast metal instrument is the standard choice for contractors looking for HVAC pneumatic controls and Siemens TH 188 series compatibility.

Key Benefits for the Contractor
  • Universal Compatibility: Direct Retroline replacement for Johnson Controls T-3300-2, streamlining the swap-out process in the field.
  • Precise Sensing: High-integrity liquid-filled thermal system with a remote bulb allows for continuous monitoring of return air streams.
  • Robust Construction: Housed in a durable zinc alloy and aluminum casing designed to withstand commercial mechanical room environments.
  • Adjustable Sensitivity: Features integral limit stops and adjustable sensitivity to fine-tune system response based on specific zone requirements.
  • Complete Installation Kit: Includes a universal mounting bracket and adhesive-backed cable clips for secure capillary and bulb placement.
Common Technical Questions

Is this unit compatible with non-Siemens pneumatic systems?
Yes, the 188-0034 is specifically designed as a unit ventilator thermostat replacement for Johnson Controls T-3300-2 models. It integrates seamlessly into existing pneumatic lines using standard barbed air connections.

What is the primary application for this remote bulb thermostat?
This model is ideal for unit ventilators and fan coil units where the sensing element must be placed in the return air stream to ensure accurate space temperature measurement while the controller remains protected within the unit enclosure.

Does this thermostat include the required restrictor?
The 188-0034 comes equipped with a 40 SCIM restrictor, which is critical for applications where the thermostat pilots other pneumatic devices, ensuring proper bleed and preventing air from being trapped in the control circuit.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

$130.10

Original: $371.72

-65%
Siemens Building Technology 188-0034 Thermostat

$371.72

$130.10

Siemens Building Technology 188-0034 Thermostat

The Siemens Building Technology 188-0034 is a professional-grade unit-mounted pneumatic thermostat engineered specifically for technical retrofitting applications. This Retroline replacement for Johnson Controls T-3300-2 provides reliable control for heating and cooling systems in unit ventilators and fan coil units. Utilizing a liquid-filled sensing element with a 96-inch capillary and a 3/8-inch diameter remote bulb, it ensures accurate temperature regulation even in restricted spaces where wall-mounted controls are impractical.

Designed for versatile DA/RA (Direct Acting/Reverse Acting) operations, the 188-0034 operates effectively at 18 psi for heating and 25 psi for changeover. It features a 40 SCIM (11 ml/s) restrictor to maintain consistent air usage and prevent control air trapping when piloting a Limitem. The force balance principle and pneumatic feedback provide the linearity required for precise HVAC management. With an exposed setpoint adjustment ranging from 60 to 85 degrees Fahrenheit, this die-cast metal instrument is the standard choice for contractors looking for HVAC pneumatic controls and Siemens TH 188 series compatibility.

Key Benefits for the Contractor
  • Universal Compatibility: Direct Retroline replacement for Johnson Controls T-3300-2, streamlining the swap-out process in the field.
  • Precise Sensing: High-integrity liquid-filled thermal system with a remote bulb allows for continuous monitoring of return air streams.
  • Robust Construction: Housed in a durable zinc alloy and aluminum casing designed to withstand commercial mechanical room environments.
  • Adjustable Sensitivity: Features integral limit stops and adjustable sensitivity to fine-tune system response based on specific zone requirements.
  • Complete Installation Kit: Includes a universal mounting bracket and adhesive-backed cable clips for secure capillary and bulb placement.
Common Technical Questions

Is this unit compatible with non-Siemens pneumatic systems?
Yes, the 188-0034 is specifically designed as a unit ventilator thermostat replacement for Johnson Controls T-3300-2 models. It integrates seamlessly into existing pneumatic lines using standard barbed air connections.

What is the primary application for this remote bulb thermostat?
This model is ideal for unit ventilators and fan coil units where the sensing element must be placed in the return air stream to ensure accurate space temperature measurement while the controller remains protected within the unit enclosure.

Does this thermostat include the required restrictor?
The 188-0034 comes equipped with a 40 SCIM restrictor, which is critical for applications where the thermostat pilots other pneumatic devices, ensuring proper bleed and preventing air from being trapped in the control circuit.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

Product Information

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Description

The Siemens Building Technology 188-0034 is a professional-grade unit-mounted pneumatic thermostat engineered specifically for technical retrofitting applications. This Retroline replacement for Johnson Controls T-3300-2 provides reliable control for heating and cooling systems in unit ventilators and fan coil units. Utilizing a liquid-filled sensing element with a 96-inch capillary and a 3/8-inch diameter remote bulb, it ensures accurate temperature regulation even in restricted spaces where wall-mounted controls are impractical.

Designed for versatile DA/RA (Direct Acting/Reverse Acting) operations, the 188-0034 operates effectively at 18 psi for heating and 25 psi for changeover. It features a 40 SCIM (11 ml/s) restrictor to maintain consistent air usage and prevent control air trapping when piloting a Limitem. The force balance principle and pneumatic feedback provide the linearity required for precise HVAC management. With an exposed setpoint adjustment ranging from 60 to 85 degrees Fahrenheit, this die-cast metal instrument is the standard choice for contractors looking for HVAC pneumatic controls and Siemens TH 188 series compatibility.

Key Benefits for the Contractor
  • Universal Compatibility: Direct Retroline replacement for Johnson Controls T-3300-2, streamlining the swap-out process in the field.
  • Precise Sensing: High-integrity liquid-filled thermal system with a remote bulb allows for continuous monitoring of return air streams.
  • Robust Construction: Housed in a durable zinc alloy and aluminum casing designed to withstand commercial mechanical room environments.
  • Adjustable Sensitivity: Features integral limit stops and adjustable sensitivity to fine-tune system response based on specific zone requirements.
  • Complete Installation Kit: Includes a universal mounting bracket and adhesive-backed cable clips for secure capillary and bulb placement.
Common Technical Questions

Is this unit compatible with non-Siemens pneumatic systems?
Yes, the 188-0034 is specifically designed as a unit ventilator thermostat replacement for Johnson Controls T-3300-2 models. It integrates seamlessly into existing pneumatic lines using standard barbed air connections.

What is the primary application for this remote bulb thermostat?
This model is ideal for unit ventilators and fan coil units where the sensing element must be placed in the return air stream to ensure accurate space temperature measurement while the controller remains protected within the unit enclosure.

Does this thermostat include the required restrictor?
The 188-0034 comes equipped with a 40 SCIM restrictor, which is critical for applications where the thermostat pilots other pneumatic devices, ensuring proper bleed and preventing air from being trapped in the control circuit.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

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