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DESCRIPTION
The RP471A Snap-Acting Relay is a two-position, four-
port, single-pole double-throw (SPDT), pneumatic switch
that provides positive switching action from modulating
signal lines with an adjustable switch point.
It has a slight air bleed in its pilot chamber that prevents
the device from locking up when the pilot port is blocked.
This bleed prevents air from being trapped in the circuit.
The switching setpoint is manually adjustable for 3 to
15 psi (21 to 103 kPa.)
The RP471A is designed for use in HVAC systems to
convert a gradual air pressure change from a controller
to a positive (two-position) pressure change at a
pneumatic valve or damper operator.
Fig. 1 shows RP471 approximate dimensions.
7
1-1/2
(38)
8
3
6
2-3/4
(70)
Fig. 1. RP471A dimensions in in. (mm).
INSTALLATION
Mounting
Suspend on tubing or mount on a surface. See Fig. 2 for
surface mounting. Use a 1-1/2 in. (38 mm) dia. metal
spring clip (supplied) and one No. 10 mounting screw
(locally purchased).
® U.S. Registered Trademark
Copyright © 2002 Honeywell • All Rights Reserved
RP471A Pneumatic
MOUNTING CLIP
(PROVIDED)
DIAMETER OF
1-1/2 IN. (38MM)
Piping
Fig. 3. shows adaptation piping. All connections are
sharp barb 5/32 in. (4 mm) O.D. polyethylene tubing.
9
7
3
3/4
1-1/16
(26)
(19)
C8241
NOTE: When the system is other than copper or poly-
Snap-Acting Relay
INSTALLATION INSTRUCTIONS
RELAY
CLIP IS
Fig. 2. Surface mounting the RP471A
with a spring clip.
CAUTION
Equipment Damage Hazard.
To prevent damage to the sharp barb
connections, do not attempt to cut or pull tubing.
To remove the tubing from the barb connections,
cut tubing a few inches from the control device.
Use a coupling to reconnect tubing.
ethylene tubing, adapt as shown in Fig. 3. Some
models provide parts for adapting.
NO. 10 X 1/2 IN.
SHEET METAL SCREW
(OBTAIN LOCALLY)
C8244
95-7252EF
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Manuels Connexes pour Honeywell RP471A
Sommaire des Matières pour Honeywell RP471A
- Page 1 The switching setpoint is manually adjustable for 3 to 15 psi (21 to 103 kPa.) C8244 The RP471A is designed for use in HVAC systems to Fig. 2. Surface mounting the RP471A convert a gradual air pressure change from a controller with a spring clip.
- Page 2 TO SETPOINT When control chamber pressure is less than return DIFFERENTIAL C8243 spring pressure, it connects port 6 to port 7 and port 8 closes port 3 is the pilot port. See Fig. 6. Fig. 4. RP471A internal port alignment. 95-7252EF...
- Page 3 Application The RP471A can stop, divert or bleed pneumatic air lines when pilot pressure is changed from one specific value to another. It can change the air flow in one or two pneumatic circuits with one pilot pressure change.
- Page 4 Relais pneumatique à rupture brusque RP471A NOTICE D'INSTALLATION DESCRIPTION Le relais à rupture brusque RP471A est un relais de PINCE DE MONTAGE (FOURNIE) commutation pneumatique, unipol. bidir., à quatre orifices, commande tout ou rien et point de commutation réglable, qui assure une commutation directe à partir d'un signal modulé.
- Page 5 (CCT1606B) LE DIFFÉRENTIEL CANALISATION CF8243 RACCORD EN EN PLASTIQUE CUIVRE DE DE 6 mm (1/4 po) Fig. 4. Alignement interne des orifices du RP471A. 6 mm (1/4 po) DIAM. EXT., COUPÉE À LA CANALISATION EN LONGUEUR VOULUE PLASTIQUE FICHE TECHNIQUE DE 4 mm (5/32 po) DIAM.
- Page 6 Fig. 6. Fonctionnement du RP471A. By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’...