2
GENERAL
The accessory vertical power exhaust is used in conjunc-
tion with the vertical EconoMi$er IV, EconoMi$er X, or Eo-
noMi$er2 accessories. For horizontal applications, this power
exhaust accessory cannot be used. The horizontal power ex-
haust accessory must be used for horizontal applications.
See Tables 3 and 4 for EconoMi$er usage. See Fig. 1 for
dimensions.
Table 3 — Economizer Accessory Use
Table 4 — Factory-Installed Vertical
Economizer Use
Fig. 1 — Dimensions, Economizer with
Power Exhaust
INSTALLATION
Follow all local and NEC (National Electrical Code)
codes. If a single power source is to be used, size the wire to
include power exhaust MCA and MOCP. (See Table 5.)
Table 5 — Power Exhaust Electrical Data
LEGEND
*For separate power source.
NOTE: For R-410A units, refer to unit nameplate for MCA and
MOCP for installed power exhaust. For R-22 units, use the cal-
culations detailed below.
Check MCA and MOCP when power exhaust is powered
through the unit (must be in accordance with NEC and/or lo-
cal codes). Determine the new MCA including the power ex-
haust using the following formula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a R-22 gas heat, electric cooling, 6-ton
unit with MCA = 28.9 and MOCP = 35, with
CRPWREXH030A01 power exhaust:
MCA New = 28.9 amps + 1.5 amps = 30.4 amps
If the new MCA does not exceed the published MOCP, the
MOCP would not change. The MOCP in this example is 35
amps, the MCA New is below 35, therefore the MOCP is ac-
ceptable. 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.
NOTE: For 575-v installations, a field-supplied and installed
transformer (part no. HT01AH859) must be used with 208/230v
power exhaust.
The vertical power exhaust can be used with 3 different
types of economizers. While the physical installation of the
power exhaust assembly stays the same, the wiring differs
among the three economizers types. These instructions de-
scribe the installation and wiring for each type. The 3 types
are:
• EconoMi$er IV with controller W7212
• EconoMi$er2 without controller. It is generally used with
a separate PremierLink controller or a field-supplied
building management system.
• EconoMi$er X with controller W7220.
PART NUMBER DESCRIPTION
CRECOMZR020A02
CRECOMZR021A03
CRECOMZR062A00
EconoMi$er IV with W7212 Controller
CRECOMZR022A01
CRECOMZR022B00
CRECOMZR023A00
CRECOMZR023B00
CRECOMZR068A00
CRECOMZR063A00
CRECOMZR070A00
EconoMi$er2 without controller
(Typically used with SystemVu™,
PremierLink, RTU Open, ComfortLink, or a
field-supplied building management system)
CRECOMZR069A00
CRECOMZR071A00
CRECOMZR078A00
CRECOMZR080A00
CRECOMZR067A00
EconoMi$er X with W7220 Controller
BASE RAIL SERIAL DESCRIPTION
4005Gxxxxx to
current
EconoMi$er IV with W7212 Controller
0802Gxxxxx to
current
EconoMi$er2 without controller
(used with PremierLink or field-supplied
building management system)
ECONOMIZER
INLET
POWER EXHAUST
OUTLET
Z
X
Y
NOTE: Dimensions in inches (mm).
UNIT
CONFIGURATION
XYZ
Small Cabinet 18.5 (470) 19.25 (515) 0.4375 (11)
Large Cabinet 26 (660) 25 (635) 0 (0)
Extra Large
Cabinet
28.6 (725) 37.75 (960) 4.5 (115)
IMPORTANT: Follow all applicable local and national
electrical codes when installing this accessory.
POWER EXHAUST
PART NUMBER
MCA
MOCP*
230V 460V 575V
CRPWREXH030A01 1.5 N/A 0.64 15
CRPWREXH021A01 N/A 0.9 N/A 15
CRPWREXH022A01
CRPWREXH080A00
3.3 N/A 1.32 15
CRPWREXH023A01
CRPWREXH081A00
N/A 1.8 N/A 15
MCA — Maximum Circuit Amps
MOCP — Maximum Overcurrent Protection
N/A — Not Applicable
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