Pneumatic Remote Bulb Thermostat Reverse Acting

Overview

Two-pipe, single temperature, unit mounted, remote bulb pneumatic thermostat used to provide proportional control of pneumatic valves and damper actuators in heating and air conditioning systems.

Features

• Liquid filled remote bulb.
• Direct Acting (DA), Reverse Acting (RA) and Heating/Cooling (DA/RA) models are available.

Product Specifications

Application

Induction and fan coil systems

Airflow Usage

0.022 scfm (10.4 mL/s) with 0.007 in. restriction

Dimensions (in.)

4 3/4 in. high x 3 3/4 in. wide x 3 in. deep

Dimensions (mm)

121 mm high x 95 mm wide x 76 mm deep

Maximum Safe Operating Pressure (psi)

25 psi

Maximum Safe Operating Pressure (kPa)

170 kPa

Temperature Range (F)

135 F maximum

Temperature Range (C)

57 C maximum

Includes

Integral Mounting Bracket, (2) 316297-00021 Bulb Hangers and 304528A Bag Assembly (mounting hardware).

Mounting

In compartment of a unit ventilator

Approvals, Underwriters Laboratories Inc.

Approvals, CSA

Setpoint Temperature Range (C)

15 C to 26 C

Setpoint Temperature Range (F)

60 F to 80 F

Shipping and Storage Temperature Range (F)

150 F maximum

Shipping and Storage Temperature Range (C)

66 C maximum

Approvals, Factory Mutual

Sensor Element

Bulb 3/8 x 9 in., capillary 36 in. (914 mm) long; Remote Bulb

Throttling Range (F)

3.5 F

Throttling Range (C)

2 C

Connection Size (in.)

Differential Pressure Range (psi)

Differential Pressure Range (kPa)

Approvals, NEMA Standard

Action

Reverse Acting

Air connections

Barb fittings 1/4 in. (6 mm)

Setpoint

Single

Number of Pipes

2

Scale Markings

60 F to 80 F

Changeover Pressure (psi)

Changeover Pressure (kPa)

Mainline Pressure Range (psi)

Capacity

Control Range (fpm)

Control Range (m/s)

Number of Sensor Inputs

Remote Control Point Adjustment

Approximate Throttling Range, Midscale (psi)

Approximate Throttling Range, Midscale (kPa)

This item has no supplemental files.