Fig. 7 — Power Exhaust Wiring for EconoMi$er IV and EconoMi$er X with Controller W7212 — 460 V Units
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FIELD
To C11 for Small and
Large Cabinet
To IFC-11 for
Extra-Large Cabinet
To C13 for Small
and Large Cabinet
To IFC13
for Extra-Large
Cabinet
POWER
SUPPLY
BLK
YEL
BLU
WHITE
RED
GREEN
OR
FIELD SUPPLIED
2 X 4 JUNCTION BOX
GROUND
FIELD
SUPPLIED
FUSED
DISCONNECT
SEPARATE
POWER
SOURCE
GRN/YEL
EQUIP
GND
POWER
LINE
PLUG
RELAY #1
RELAY #2
123
456
789
AB
123
456
789
AB
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
POWER
EXHAUST
ACCESSORY
TO ECONOMI$ER
ACTUATOR
END
SWITCH
PLUG
24V
HOT
24V
COM
+
EF EF1
ECONOMI$ER
CONTROLLER
GRAY
GREEN-YELLOW
EXH.
FAN #1
EXH.
FAN #2
GRD
GREEN
BLAC
K
WHITE
BLAC
K
BROWN
BLACK
BLAC
K
BLUE
TA
N
TAN
TAN
WHITE
BLACK
RE
D
BROWN
BLUE
RED
WHITE
BLACK
ECONOMI$ER IV
123456789101112
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2
3
4
GRAY
TAN
BRN
YEL
ECONOMI$ER X
Field Supplied Wiring
Economizer actuator and controller are shipped
with the Economi$er not with power exhaust
Connection from End Switch Plug to the Economi$er
controller are made by installer
If a single power source is to be used, size wire to include
power exhaust MCA and MOCP.
For R-410A units, refer to the unit nameplate for MCA and
MOCP for installed power exhaust.
For R-22 units use the following calculations
Check MCA and MOCP when power exhaust is powered
through the unit. Determine the new MCA including the power
exhaust using the following formula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using an electric cooling, 6-ton R-22 unit with
MCA = 28.9 and MOCP = 35, with CRPWREXJ030A01 power exhaust.
MCA New = 28.9 amps + 1.5 amps = 30.4 amps
If the new MCA does not go over the MOCP published, then MOCP would
not change. The MOCP in this example is 35 amps, the MCA New is below
35, therefore the MOCP is OK. If “MCA NEW” is larger than the published
MOCP, raise the MOCP to the next larger size. For separate power, the
MOCP for the power exhaust will be 15 amps per NEC.
PL-6
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