Honeywell Pneumatic Controls User Manual

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Reference
70-6925 99
VP522 Pneumatic Sequencing Water Valve
Three-pipe, sequencing, pneumatically operated water valve for
controlling both hot and cold water flow in fan-coil and induction
units. Replacement devices are available for Johnson, Powers,
Robertshaw, Barber-Colman, and older Honeywell devices.
• Corrosion resistant.
• Molded-in composition discs for tight shutoff.
• Flare connections for easy installation.
• Operator rotates 360 degrees for convenient air piping alignment.
Dimensions in inches (millimeters) Operating Sequence on Control Air Pressure Increase
Typical VP522 Operation Diagram
B
C4671A
A
C
VALVE
SIZE
3/8 IN.
1/2 IN.
3/4 IN.
A
IN INCHES (mm)
B
IN INCHES (mm)
C
IN INCHES (mm)
9-13/16 (249)
9-15/16 (252)
9-15/16 (252)
5-1/8 (130)
5-1/8 (130)
5-1/8 (130)
3-5/8 (92)
3-5/32 (80)
3-5/32 (80)
VP522A
AIR PRESSURE
psi (kPa)
VP522B
3/8 IN. 1/2 IN. & 3/4 IN.
ALL SIZES
HOT PORT
OPEN 100%
HOT PORT
CLOSES
BOTH PORTS
CLOSED
COLD PORT
OPENS
COLD PORT
OPEN 100%
0 (0)
1 (7)
2 (14)
3 (21)
4 (28)
5 (34)
6 (41)
7 (48)
8 (55)
9 (62)
10 (69)
11 (76)
12 (83)
13 (90)
14 (97)
15 (103)
HOT PORT
OPEN 100%
HOT PORT
CLOSES
BOTH PORTS
CLOSED
COLD PORT
OPENS
HOT PORT OPEN
100%
COLD PORT
OPEN 100%
HOT PORT CLOSES
BOTH PORTS CLOSED
COLD PORT OPENS
COLD PORT OPEN
100%
M13864
M5447
A
B
N.O. PORTS
B TO AB
VP522A
VALVE
CONTROL
AIR
AB
CHILLED
WATER
HOT
WATER
VP522B
VALVE
TO
CHILLER
TO
BOILER
CONTROL
AIR
A
B
AB
COIL

Honeywell Pneumatic Controls Specifications

General

Brand	Honeywell
Model	Pneumatic Controls
Category	Controller
Language	English