INSERT-AIR-SYSTEMS

NOTES: 1. ALL CONTACTS IN THE DIAGRAM ARE SHOWN WITH THE SYSTEM DE-ENERGIZED AT ATMOSPHERIC PRESSURE. SW# 1 CONTACT 1-2 : CLOSES AT 0.25 PSIG & ABOVE. CONTACT 1-3 : CLOSES AT A PRESSURE OF 0.25 PSIG OR BELOW, SENDING AN ALARM, IF MONITORED. SW# 2 CONTACT 6-4 : CLOSES AT 8.5 PSIG & BELOW. CONTACT 6-5 : CLOSES AT A PRESSURE OF 8.5 PSIG OR ABOVE, SENDING AN ALARM, IF MONITORED. SW# 3 CONTACT BLU-BLK : N.C., OPENS AT 200.0 PSIG CONTACT RED-BLK : N.O., CLOSES AT 200.0 PSIG

WHT

BLK

5 6 4 SW# 2

2

RED

NO C NC

8.5 PSI

8.5 PSI

NO LO C NO HI NO C NC + - + - L1 N 120 N G ALARMS ALARM (VAC) (4-20mA) (4-20mA)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

.25 PSI .25 PSI

TRANS. TANK

NO C NC

1

WHT

HIGH PRESS

3

SW# 1

LOW PRESS

PG1

NITROGEN.STORAGE

TRANS TANK STOR-TANK

RED

BLK

BLU

HEATER SUPPLY POWER

NC C NO

PSI

SW# 3

BLK BLK

2

1

CONNECTOR

WHT BLK NATURAL CONVECTION

2

1

60W PTC HEATER

ALARM ENABLE SWITCH

WIRING DIAGRAM

SHEET 2 OF 2