77-9382-1
TP970 and TP9600 Series
Pneumatic Thermostats
Copyright © 1997 Honeywell Inc. • All Rights Reserved
ENGINEERING DATA
Contents
Introduction
..............................................................................................................................
2
Fundamentals of
Thermostat Operation
..............................................................................................................................
2
General .................................................................................................................
2
Flapper-Nozzle Operation ....................................................................................
2
Valve Unit Operation ............................................................................................
2
TP973A, B and TP9630 A, B
Low-Capacity, Single-Temperature
Thermostats
..............................................................................................................................
4
General .................................................................................................................
4
Operation..............................................................................................................
5
Direct Action ..................................................................................................
5
Reverse Action ..............................................................................................
5
TP970A-D and TP9600A, B
High-Capacity, Single-Temperature
Thermostats
..............................................................................................................................
6
General .................................................................................................................
6
Operation..............................................................................................................
6
Direct Action ..................................................................................................
6
Reverse Action ..............................................................................................
7
TP971A-C and TP9610A, B
High-Capacity, Dual-Temperature
Thermostats
..............................................................................................................................
7
TP971B and TP9610B .........................................................................................
7
TP971C ................................................................................................................
7
TP971A and TP9610A .........................................................................................
7
Daytime Operation ...............................................................................................
8
Nighttime Operation .............................................................................................
8
Manual DAY Override ...........................................................................................
9
TP972A and TP9620A High-Capacity,
Heating/Cooling Thermostat
.............................................................................................................................. 10
General ................................................................................................................. 10
Operation.............................................................................................................. 12
TP974A Room
Temperature Sensor
.............................................................................................................................. 12
General ................................................................................................................. 12
Operation.............................................................................................................. 12
