Honeywell RP973A Notice D'utilisation page 2

RP973A PNEUMATIC AVERAGING RELAY
INSTALLATION
Mounting
Suspend on tubing or mount on a surface. See Fig. 2.
WALL OR
PANEL
Fig. 2. Surface mounting.
Piping
Fig. 3.shows adaptation piping. All connections are sharp
barb 5/32 in. (4 mm) O.D. polyethylene tubing.
CAUTION
Equipment Damage Hazard.
To prevent damage to the sharp barb
connections, do not attempt to cut or pull tubing.
To remove tubing from the barb connections, cut
tubing a few inches from the control device. Use
a coupling to reconnect tubing.
NOTE: When the system is other than copper or
polyethylene tubing, adapt as shown in Fig. 3.
Some models provide parts for adapting.
95-7253EF
NO. 8 SCREW
(NOT PROVIDED)
M7881
CONNECT
1/4 IN.
(6 MM)
PLASTIC
CONNECT
1/4 IN.
(6 MM)
COPPER
Fig. 3. Adaptation piping.
Port Identification Table
The two right column in Table 1 identify the ports of older
Honeywell pneumatic relays when upgrading installation.
Table 1. Pneumatic Relay Ports.
Input A
Input B
Output
Main
Checkout and Test
The output should equal the average of the inputs within
±20 percent of the difference of the two inputs.
2
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
RP973A RO904C
5 P1
3 P2
2 M
– –
M7884
RO94C
1A
1B
3
2