Install Instructions

RP970A PNEUMATIC CAPACITY RELAY
Piping
Fig. 3 shows adaptation piping. Port 1 (Main, Supply)
sharp barb for 1/4-in. (6 mm) O.D. tubing. Ports 2, 3, and 4
(Branch, Output; Pilot, Input; and Exhaust, respectively),
sharp barb for 5/32-in (4 mm) O.D. tubing.
CAUTION
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.
NOTE: If the system is other than copper or polyethylene
tubing, adapt as shown in Fig. 3. Some models
provide parts for adapting.
CONNECT
1/4 IN.
(6 MM)
PLASTIC
CONNECT
1/4 IN.
(6 MM)
COPPER
POST FOR
5/32 IN. (4 MM) O.D.
PLASTIC TUBING
5/32 IN. (4 MM)
O.D. PLASTIC
TUBING CUT
TO LENGTH
5/32 IN. X 1/4 IN.
(4 MM X 6 MM)
O.D. PLASTIC
CONNECTOR
(CCTI606B)
1/4 IN. (6 MM)
O.D. PLASTIC
TUBING CUT TO
LENGTH
RP970A
1/4 IN. (4 MM) O.D.
PLASTIC/COPPER
ADAPTER
(CCTI633BT)
1/4 IN. (6 MM) O.D.
COPPER TUBING
C8239
Fig. 3. Adaptation Piping.
Port Identification Table
The shaded area of the following table identifies the ports
on older Honeywell pneumatic relays when upgrading
installation.
RP970A
RP904A
RO904A
RP95A
RO95A
Main 1 M 2
Branch 2 B 3
Pilot 3 P2 1
Exhaust 4 — —
Plugged Port — P1 —
Checkout and Test
The branch output pressure varies to match the pilot
input pressure.
ENGINEERING DATA
Specifications
Models:
RP970A Pneumatic Capacity Amplifier
Operating Pressure Range:
Normal Main: 18 psi (124 kPa)
Maximum Safe Main: 30 psi ( 207 kPa)
Pilot: 3 to 15 psi (21 to 103 kPa)
Operating Air Pressures:
Pilot: 3 to 5 psi (21 to 34 kPa)
Main: 18 psi (124 kPa)
Action:
Proportional (branchline pressure increases with pilot
signal at 1:1 ratio)
Air Handling Capacity (Feed and Bleed):
0.039 scfm at ± 1.02 psi droop (18.3 ml/sec at 7 kPa
droop). Conditions: 18 psi (124 kPa) Main and 9 psi
(62 kPa) Pilot
Air Consumption:
0.002 scfm (1.0 ml/sec) maximum
Construction:
Molded plastic with neoprene diaphragm, stainless
steel valve seats, and 100-mesh stainless steel
filters in main and branch ports
95-7233
2