Honeywell RP418B, RP418C, RP418A, RP818B, RP818A Installation Instructions Manual
RP418A, B, C and RP818A, B
Electric/Pneumatic Relays
INSTALLATION INSTRUCTIONS
BEFORE INSTALLATION
The RP418 and RP818 Electric/Pneumatic Relays are
electrically operated pneumatic switches used for interlock
between an electrical system and a pneumatic control system.
These devices can also be used as stop and bleed valves or
as diverting or selector relays.
These relays are designed for wall mounting or panel
mounting, depending upon the application. They can be
mounted in any position without affecting the operation of the
device.
An optional 14003638-001 mounting kit is available for direct
mounting to the MP516A operators, VP519C valves or
PP901B and PP902B pressure regulators. See the Device
Mounting section.
No special tools are needed to install the RP418 and RP818
relays. Refer to job drawings for specific mounting locations.
INSTALLATION
Duct or Wall Mounting
1. Position the relay on the duct or wall and mark the
knockout mounting holes or mark the first hole and
measure 1 in. (25mm) to the second hole. See Fig. 1.
2. Drill holes for no. 8 mounting screws obtained locally.
NOTE: When wall mounting, use the mounting holes on the
sides of the relay valve body or the knockout mounting holes on the inside of the splice box. See Fig. 2.
NOTE: The RP418 and RP818 are functional replacements
for the RP417 and RP817. Note the difference in
location of ports 1 and 2.
3-3/4 (96)
RP418A,C AND RP818A
1-5/8 (42)
RP418B; RP818B
2-3/4
(71)
1-1/4
(32)
1-1/4
(32)
7/16
(15)
1 (25)
1
1
MOUNTING CENTERS FOR NO. 8 SCREWS. MOUNTING CENTERS
MAY BE UP TO 1-5/16 (35) APART TO EASE INSTALLATION.
1
7/8 DIAMETER
KNOCKOUTS (2)
FOR 1/2 INCH
CONDUIT
GROUNDING
SCREW
1 (25)
5/8 (16)
KNOCKOUTS FOR
NO. 8 SCREWS
1-3/8
(35)
M18376
Fig. 1. RP418 and RP818 dimensions in in. (mm).
3. Attach the relay to the panel using mounting screws
obtain locally.
Panel Mounting
1. Line up the no. 8 mounting holes on the sides of the
valve body with existing holes in the panel or drill new
holes 1 in. (25 mm) apart.
2. Attach the relay to the panel using mounting screws
obtained locally.
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Device Mounting
The RP418 and RP818 Relays can be mounted directly to
MP516 operators, VP519C valves, or PP901B and PP902B
pressure regulators. A mounting bracket is available in
adaptor kit 14003638-001. This bracket must be used when
mounting the relay in this manner.
1. Use the mounting holes beneath the cover of the splice
box and attach the relay using mounting screws
obtained locally. See Fig. 2 through 5.
95-6046EF
RP418A, B, C AND RP818A, B ELECTRIC/PNEUMATIC RELAYS
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
MP516A
BRACKET
RP418 OR RP818
PP910B
BRACKET
M18372
Fig. 2. RP418 or RP818 relays mounted directly to an
MP516A operator using the 14003638-001 adaptor kit.
VP519C
BRACKET
RP418 OR RP818
M18373
Fig. 3. RP418 or RP818 relays mounted directly to a
VP512C valve using the 14003638-001 adaptor kit.
Wiring and Piping
All pneumatic piping connections on the RP418 and RP818
are sized for 1/4-in. (6mm) OD polyethylene tubing. The connections are sharp, barb-type connections. See Fig. 6 and 7.
Wiring connections on the RP418A and RP818A are made via
splices inside the splice box. Knockouts are provided on the
box. For ambient temperatures between 100 to 120°F (38 to
49°C) either use 75°C rated wire or attach a close-coupled
4 x 4 electrical box to the RP418A or RP818A splice box.
Make the wire splices within the electrical box.
Wire leads provide a means of connection on the RP418B
and RP818B. Use standard wire nut connectors, obtained
locally, when making these connections.
NOTE: A cord and plug are provided for wiring connections
on the RP418C.
The RP418 and RP818 relays require no adjustment or
calibration.
RP418 OR RP818
M18375
Fig. 4. RP418 or RP818 relays mounted directly to a
PP901B pressure regulator using the 14003638-001
adaptor kit.
PP920B
RP418 OR RP818
BRACKET
M18374
Fig. 5. RP418 or RP818 relays mounted directly to a PP902
pressure regulator using the 14003638-001 adaptor kit.
VOLTAGE
SUPPLY
FAN
SWITCH
RP418 OR
SUPPLY
AIR
1
RP818
2
EXHAUST
3
DAMPER
OPERATOR
FAN MOTOR
DAMPER
M18298
Fig. 6. RP418 and RP818 typical wiring and piping.
2
3
DEENERGIZED:
PORTS 2 AND
3 CONNECTED,
PORT 1 BLOCKED.
1
2
ENERGIZED:
PORTS 1 AND
3 CONNECTED,
PORT 2 BLOCKED.
3
1
M18299
Fig. 7. Pneumatic schematic.
Automation and Control Solutions
Honeywell Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Scarborough, Ontario
M1V 4Z9
95-6046EF J.H. Rev. 1-02 customer.honeywell.com
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