Carrier CRPWREXH071A01 Installation Instructions Manual

Power Exhaust Part Numbers: CRPWREXH071A01 through CRPWREXH079A01
Conversion Package Numbers: CRPECONV005A00, CRPECONV006A00
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Vertical Discharge Units
(48/50AJ,AK,A2,A3,A6,A7 and 48/50K2, K3) . . . . . 2
Horizontal Discharge Units
(48/50AW,AY,A4,A5,A8,A9 and 48/50K4, K5) . . . . 7
Configuration for 48/50A only . . . . . . . . . . . . . . . . . . 9
Conversion Package for 48/50A Only . . . . . . . . . . . . 9
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 13
Warnings and Alarms . . . . . . . . . . . . . . . . . . . . . . . . 13

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
should be performed by trained service personnel. When working
on air-conditioning equipment, observe precautions in the
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
Follow all safety codes, including ANSI (American National
Standards Institute) Z223.1. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire
extinguisher available for all brazing operations.
It is important to recognize safety information. This is the
safety-alert symbol . When you see this symbol on the unit and
in instructions or manuals, be alert to the potential for personal
injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices, which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
WARNING
Before performing service or maintenance operations on unit,
turn off main power switch to unit. Electrical shock could
cause personal injury.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480449-01
Installation Instructions
Page
Printed in U.S.A. Form No. 48-50A-1ASI Rev A
High-Capacity Power Exhaust
and Conversion Package Accessories
WARNING
Electrical shock can cause personal injury and death. Shut off
all power to this equipment during installation and service.
There may be more than one disconnect switch. Tag all
disconnect locations to alert others not to restore power until
work is completed.

GENERAL

IMPORTANT: In order to field install High Capacity Power
Exhaust accessory in 48/50K only, the unit must have "Power
and Control Accessory" option installed from the factory. Oth-
erwise the accessory will not be able to operate.
Refer to Table 1 for package usage. For a complete list of parts
contained in each kit see Table 2. For sizes 020-050, either 1 or 2
module versions of the accessory may be ordered and installed de-
pending on the desired exhaust airflow. For size 060, either 2 or 3
module versions of the accessory may be ordered and installed de-
pending on the desired exhaust airflow.
The high-capacity power exhaust blowers are shipped assembled
and are packaged with one hood assembly per container.
Each module has 2 high-capacity power exhaust blowers. Brack-
ets, wires, and extra gasket screws are also included in the
package.
In addition to the power exhaust accessory, the following accesso-
ries are required for 48/50A only (see Table 3):
• To convert a constant volume unit without power exhaust
to a modulating power exhaust unit, conversion kits
CRPECONV005A00 and CRPECONV006A00 must be
installed.
NOTE: If the unit has the factory-installed hot gas bypass
(HGBP) option (also referred to as a minimum load valve),
or Digital Compressor, or if it's a VAV (variable air vol-
ume) unit, then the CRPECONV005A00 kit will not be
required.
• To convert a VAV unit without power exhaust to a
modulating power
CRPECONV006A00 must be installed.
CAUTION
When removing panels from the unit, be careful not to damage
roof or other surfaces with the panels.
Pg 1
48/50A 020-060
48/50K 20-60
exhaust unit, conversion
9-24 Replaces: 48-50A-16SI
kit