Hp972 Pneumatic Humidistat; One-Pipe - Honeywell Pneumatic Controls Engineering Manual

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HP972 Pneumatic Humidistat

Typical Two-Pipe HP972B Hook-up
HP972B
M B
M
HUMIDIFIER
VALVE
N.C.
SUPPLY
C3225
Application: Humidity
Dimensions, Approximate: 3 1/4 in. high x 2 in. wide x 1 5/8 in. deep
(83 mm high x 51 mm wide x 41 mm deep)
Airflow Usage: 0.011 scfm (5.2 mL/s)
Maximum Operating Temperature:
Maximum Storage Temperature: -30 to +150 F (-34 to +66 C)
Maximum Operating Pressure:
Accessories:
14002430-001 Thermostat Guard
14002362-001 Duct Sampling Chamber
14004406-124 Humidistat Cover assembly Satin Chrome with setpoint
display and Honeywell logo for vertical mounting, scale range 15 to
75% RH
14003192-001 Wallplate adapter kit. Adapts HP970 or TP970 series
stats to HP900 and TP900 flush mounted and TP910 series flush or
surface mounted installations
305965 1-1/2 in. diameter, 1/8 NPT center stem back mount Pressure
Indicating gauge (0 to 30 psi scale) with +/- 4% accuracy
Product Number Action
HP972B1005
Reverse Acting
45 F to 125 F (7 C to 52 C)
25 psi (170 kPa)
Number of
Pipes
Scale Range (% RH)
1 or 2
15 to 75% RH
A proportioning pneumatic humidistat used on one- or two-pipe
installations for controlling actuators on valves and dampers in air
conditioning systems for humidification or dehumidification
control.
Durable HP970 series humidistat.
Snap-on mounting to backplate.
Vertical or horizontal mounting.
Backplate has molded air connections; no separate fittings needed.
Variety of cover finishes and display styles available.
Wide throttling range.
Typical One-pipe HP972B Hook-up
HP972B
M
B
M
.005
RESTRICTION
(BLUE)
HUMIDIFIER
VALVE
SUPPLY
AK3863 Honeywell Thermostat Tool Kit, TP970/TP900
CCT729A Gauge Adapter for Calibration. Add 305965 0 to 30 psi
gauge for Complete Tool.
CCT735A Thermostat Calibration Tool includes Allen wrench for cover
installation.
For additional covers, see Humidistat Cover Assemblies
Replacement Parts:
14001865-001 Filter Cartridge Assembly
14002496-003 Nylon element assembly, with Spring
14002573-001 Modernization Kit to convert all 1 & 2 pipe Honeywell &
competitive pneumatic stats to TP970, TP971A, TP972, TP973,
TP974, TP9600 family; HP970, HP971 and HP972
14002374-004 Restrictor Block Assembly,.005 in., For TP970A-D;
TP971A-E except C; TP972A; TP973A-B; TP9600 family; HP970A-B;
and HP972B
14002053-001 Back Plate Assembly
Throttling Range (% RH)
7 to 35% RH
70-6925
Humidistats
N.C.
C3226
Setpoint
Comments
Single
Order Cover Separately
3

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