Honeywell VP525C, Engineering Manual, Page: 77 / 228

Switches
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70-6925 69
SP970 Pneumatic Manual or Minimum Position Switches
Used to manually position a remote damper actuator or to reset
the setpoint of a pneumatic controller. They can also provide
minimum damper position by setting a minimum pressure limit in
the branchline to the damper actuator. Replacement kits are
available for Johnson, Powers, Robertshaw, Barber-Colman, and
older Honeywell switches.
• Two spans available as shipped. Six spans with breakaway stops on
knob.
• Pilot bleed and isolated pilot models available.
• Wall or panel mounting.
Dimensions in inches (millimeters)
Airflow Usage: 0.022 scfm (9.8 mL/s)
Air Connections: Barb fitting for 5/32 in. (4 mm) O.D. plastic tubing
Mounting: Panel or Wall
Capacity: 0.021 scfm (9.4 mL/s) below minimum position. Above
minimum position, device feeding pilot determines capacity
Operating Humidity Range (% RH): 5 to 95% RH
Temperature Range: 0 F to 140 F (-18 C to +60 C)
Maximum Safe Operating Pressure: 30 psi (207 kPa)
Switch Operation: Used to manually position a remote damper
actuator or reset setpoint of pneumatic controller
Switch Type: Three-port pneumatic manual or minimum position
switch
Pneumatic Switch Replacement Parts
C4857 FRONT VIEW
SP970A 3-1/2 (89)
SP970C 3-7/8 (98)
SIDE VIEW
0
80
60
40
20
100
2-1/2
(63)
1-1/2
(38)
7/8
(22)
2-1/4
(57)
1-7/8
(48)
Product Number
Output Span
Description Includes (psi) (kPa)
SP970A1005 10 psi (with 188 degree knob
rotation); 13 psi (with 244
degree knob rotation); 16 psi
(with 300 degree knob rotation)
69 kPa (with 188 degree knob
rotation); 90 kPa (with 244 degree
knob rotation); 110 kPa (with 300
degree knob rotation) Manual Pressure Regulator or
Provides minimum branchline
pressure when used with a high
capacity device (like a RP920).
Knob, 0 to 100%
scale plate and
locknuts
SP970A1013 5 psi (with 188 degree knob
rotation); 6.5 psi (with 244
degree knob rotation); 8 psi (with
300 degree knob rotation)
34 kPa (with 188 degree knob
rotation); 45 kPa (with 244 degree
knob rotation); 56 kPa (with 300
degree knob rotation) Manual Pressure Regulator or
Provides minimum branchline
pressure when used with a high
capacity device.
Knob, 0 to 100%
scale plate and
locknuts
SP970C1001 10 psi (with 188 degree knob
rotation); 13 psi (with 244
degree knob rotation); 16 psi
(with 300 degree knob rotation)
69 kPa (with 188 degree knob
rotation); 90 kPa (with 244 degree
knob rotation); 110 kPa (with 300
degree knob rotation) Manual Pressure Regulator or
Provides minimum branchline
pressure when used with a low
capacity device.
Knob, 0 to 100%
scale plate and
locknuts
SP970C1043 5 psi (with 188 degree knob
rotation); 6.5 psi (with 244
degree knob rotation); 8 psi (with
300 degree knob rotation)
34 kPa (with 188 degree knob
rotation); 45 kPa (with 244 degree
knob rotation); 56 kPa (with 300
degree knob rotation) Manual Pressure Regulator or
Provides minimum branchline
pressure when used with a low
capacity device.
Knob, 0 to 100%
scale plate and
locknuts
Product Number Description Used With
14003022-003 Final Assembly, manual and minimum position switch, 10 psi span SP970A
14003078-003 Pneumatic 2-Position Switch SP470A
14003199-002 Bag assembly with two scale plates, knob assembly and nuts for SP470A SP470A