Rp975 Pneumatic Hesitation Relay; Pneumatic Relay Accessories And Replacement Parts; Accessories; Relays - Honeywell Pneumatic Controls Engineering Manual

Relays

RP975 Pneumatic Hesitation Relay

Typical Piping With Isolation Circuit
DA
THERMOSTAT
LOW LIMIT
M B
SENSOR
M
M
RP470B
3
EXH
5
2
ISOLATE PILOT
WITH RP470B
PIPED AS
REPEATER
Product Number Operation
RP975A1003 Provides minimum outside air
damper position

Pneumatic Relay Accessories and Replacement Parts

Product Number Description
14003030-001 Mounting Clip
14003638-001 Bag Assembly, Mounting Hardware for RP418
315178/0062 Cup, feedback spring for old Gradutrol relay
62 customer.honeywell.com
HEATING VALVE
OR FACE AND
BYPASS DAMPER
0.005 IN. RESTRICTION
RP975A
1
2
3
DAMPER
ACTUATOR
C4473
Description
Pneumatic Three-Port
Hesitation Relay
A three-port hesitation relay provides minimum outside air damper
position plus controlled ventilation for large volume unit
ventilators. Replacement devices are available for Johnson,
Powers, and Barber-Colman devices.
• Manually adjustable minimum position. In-line, wall or panel
mounted.
• Sharp-barb air connections.
• Molded plastic construction.
Type: Pneumatic Three-Port Hesitation relay
Dimensions, Approximate: 2 1/4 in. high x 2 1/2 in. wide x 3 3/4 in.
deep (57 mm high x 63 mm wide x 96 mm deep)
Airflow Usage: 0.022 scfm (10 mL/s)
Air Connections: Barb fittings 5/32 in. (4 mm) O.D. plastic tubing
Capacity: 0.003 scfm (1.65 mL/s)
Knob Rotation: Knob has two (2) internal breakaway stops that limit
rotation to 188 degrees. Each stop, when removed, adds 56 degrees
of rotation. Maximum rotation is 300 degrees.
Mounting: Wall or In-line or panel
Operating Humidity Range (% RH): 5 to 95% RH
Temperature Range: 32 F to 125 F (0 C to 52 C)
Maximum Safe Operating Pressure: 30 psi (205 kPa)
Replacement Parts:
14003203-003 Conversion Kit to convert Johnson, Powers,
Robertshaw, Barber Coleman and older Honeywell switches
Includes
14003030-001, 1 1/2 in. Mounting Clip for mounting relay to wall or
panel. Also includes scaleplate and knob, factory mounted and
calibrated. Use with MP909 or MP918 Damper Actuator having a 7 to
13 psi (50 to 90 kPa) spring range
70-6925
Used With
RP470, RP471, SP970
RP418;
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