Product Overview

TP972A

Pneumatic Thermostat

77-9825

SPECIFICATION DATA

RC159

GENERAL

The TP972A Pneumatic Thermostat is a two-temperature,

two-pipe, proportioning thermostat used to control

pneumatic valve and damper actuators in pneumatic HVAC

control systems.

FEATURES

• Two bimetal elements, one for direct-acting heating

cycle and the other for reverse-acting cooling cycle

• Adjustable throttling range

• Automatic changeover from main line pressure

changes

• Indicating spiral bimetal thermometer

• Individual concealed setpoint knobs for each bimetal

element, preventing unauthorized changes

• Self-sealing branch line gage tap

• Noncorrosive air passages

• Glass filled Delrin backplate acts as thermal insulator

to reduce cold wall effect

• Air filter

PAGE 1
TP972A Pneumatic Thermostat SPECIFICATION DATA FEATURES • Two bimetal elements, one for direct-acting heating cycle and the other for reverse-acting cooling cycle • Adjustable throttling range • Automatic changeover from main line pressure changes • Indicating spiral bimetal thermometer • Individual concealed setpoint knobs for each bimetal element, preventing unauthorized changes • Self-sealing branch line gage tap • Noncorrosive air passages • Glass filled Delrin backplate acts as thermal insulator to re
PAGE 2
TP972A PNEUMATIC THERMOSTAT DESCRIPTION The TP972A Pneumatic Thermostat is a two-temperature, two-pipe, proportioning thermostat used to control pneumatic valve and damper actuators in pneumatic HVAC control systems. SPECIFICATIONS Model: TP972A: Reverse acting—cooling Direct acting—heating Adjustment: External breakaway knob with locking stops for minimum and maximum adjustment Thermometer: Spiral bimetal: 60 to 90F or 15 to 30C Dimensions: 3-1/8 x 1-7/8 x 1-1/2 in.