Install Instructions

RP971A PNEUMATIC RATIO (SEQUENCING) RELAY
CCTI606B
CONNECT
1/4 IN.
(6 MM)
PLASTIC
CONNECT
1/4 IN. (6 MM)
O.D. COPPER
TO
CONNECT
TO
1/4 IN. (6 MM)
O.D. PLASTIC
CONNECT
1/4 IN. (6 MM)
O.D. COPPER
PORTS 2, 3, & 4
RP971
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
1/4 IN. (4 MM) O.D.
PLASTIC/COPPER
ADAPTER
(CCTI633BT)
1/4 IN. (6 MM) O.D.
COPPER TUBING
RP971
PORT 1
POST FOR
1/4 IN. (6 MM)
PLASTIC
1/4 IN. (6 MM)
O.D. PLASTIC
TUBING CUT TO
LENGTH
1/4 IN. (6 MM) O.D.
COPPER ADAPTER
(CCTI633BT)
1/4 IN. (6 MM) O.D.
COPPER TUBING
NOTE: PORT 4 IS TYPICALLY NOT CONNECTED
C8249
Fig. 3. Adaptation Piping.
95-7234
2
Port Identification Table
The shaded area of the following table identifies the ports
on older Honeywell pneumatic relays when upgrading
installation.
RP971A RP907
Main 1 M
Pilot 3 P
Branch 2 B
Exhaust 4 —
Adjustments
The pilot start point pressures are continuously adjustable
from 0 to 10 psi (0 to 69 kPa.)
Checkout and Test
Verify that the RP971A performs according to the following
equation:
10
Output =
(
Span
x
(
Pilot – Pilot Start Point
)
)
+3
EXAMPLE 1:
Span = 3 psi
Pilot Startpoint = 6 psi
10
Output =
(
3
x
(
Pilot – 6
)
)
+3
Pilot (psi) Output (psi)
6 3
7.5 8
9 13
EXAMPLE 2:
Span = 5 psi
Pilot Startpoint = 8 psi
10
Output =
(
5
x
(
Pilot – 8
)
)
+3
Pilot (psi) Output (psi)
8 3
10.5 13
13 8