General; Installation - Carrier CRPWREXH030A01 Installation Instructions Manual

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
PART NUMBER
CRECOMZR020A02
CRECOMZR021A03 EconoMi$er IV with W7212 Controller
CRECOMZR062A00
CRECOMZR022A01
CRECOMZR022B00
EconoMi$er2 without controller
CRECOMZR023A00
(Typically used with SystemVu™,
CRECOMZR023B00
PremierLink, RTU Open, ComfortLink, or a
CRECOMZR068A00
field-supplied building management system)
CRECOMZR063A00
CRECOMZR070A00
CRECOMZR069A00
CRECOMZR071A00
CRECOMZR078A00 EconoMi$er X with W7220 Controller
CRECOMZR080A00
CRECOMZR067A00
Table 4 — Factory-Installed Vertical
Economizer Use
BASE RAIL SERIAL
4005Gxxxxx to
EconoMi$er IV with W7212 Controller
current
EconoMi$er2 without controller
0802Gxxxxx to
(used with PremierLink or field-supplied
current
building management system)
Y
UNIT
X
CONFIGURATION
Small Cabinet 18.5 (470)
Large Cabinet 26 (660)
Extra Large
28.6 (725)
Cabinet
NOTE: Dimensions in inches (mm).
Fig. 1 — Dimensions, Economizer with
Power Exhaust
DESCRIPTION
DESCRIPTION
X
ECONOMIZER
INLET
POWER EXHAUST
OUTLET
Z
Y Z
19.25 (515) 0.4375 (11)
25 (635) 0 (0)
37.75 (960) 4.5 (115)

INSTALLATION

IMPORTANT: Follow all applicable local and national
electrical codes when installing this accessory.
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
POWER EXHAUST
PART NUMBER
CRPWREXH030A01
CRPWREXH021A01
CRPWREXH022A01
CRPWREXH080A00
CRPWREXH023A01
CRPWREXH081A00
LEGEND
MCA — Maximum Circuit Amps
MOCP — Maximum Overcurrent Protection
N/A — Not Applicable
*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.
2
MCA
230V 460V 575V
1.5 N/A 0.64
N/A 0.9 N/A
3.3 N/A 1.32
N/A 1.8 N/A
MOCP*
15
15
15
15