Carrier CRPWREXH068A00 Installation Instructions Manual
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Carrier CRPWREXH068A00 Installation Instructions Manual

Carrier CRPWREXH068A00 Installation Instructions Manual

Power exhaust accessory single package rooftop units select 12.5 to 27.5 ton units
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Part No. CRPWREXH068A00, CRPWREXH069A00, CRPWREXH070A00
IMPORTANT: Read these instructions completely before
attempting to install this accessory.
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Power and Control Wiring . . . . . . . . . . . . . . . . . . . . . 3
Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
For Units with W7220 Economizer . . . . . . . . . . . . . . 8
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

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. 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.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480350-01
Installation Instructions
Page
Printed in U.S.A.
Form IIK-CRPWREXH068-05
Power Exhaust Accessory
Single Package Rooftop Units
Select 12.5 to 27.5 Ton Units
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
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
and/or death.
Before beginning any modification, disconnect power supply
and install lockout tag before attempting to install the
accessory. All wiring must comply with applicable national
and local codes.
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in damage to
equipment.
When removing panels from the unit, be careful not to damage
the roof or other surfaces with the panels.

GENERAL

IMPORTANT: The power exhaust accessory requires the use of
the economizer. Power Exhaust will not operate without the use
of an economizer.
The power exhaust accessory is for use in both vertical and hori-
zontal return air duct applications.
Confirm that the power exhaust package part number on the crate
matches the unit size and voltage of the unit per Tables 1 and 2.
Consult product literature for the economizer accessory if the unit
is not already equipped.
Refer to Table 3 for a complete list of parts contained in each pow-
er exhaust kit.
The power exhaust hood assembly has 2 power exhaust blowers.
Return block-off panels, support bracket, screws, relay and wiring
harness are also included in the package.
Pg 1
6-22
Replaces: IIK-CRPWREX068-04

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Summary of Contents for Carrier CRPWREXH068A00

  • Page 1: Table Of Contents

    Single Package Rooftop Units Select 12.5 to 27.5 Ton Units Installation Instructions Part No. CRPWREXH068A00, CRPWREXH069A00, CRPWREXH070A00 Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the safety-alert symbol. IMPORTANT: Read these instructions completely before DANGER identifies the most serious hazards which will result in attempting to install this accessory.
  • Page 2 Table 1 — Power Exhaust Accessory Usage (Vane Axial Fan Units) UNIT NAMEPLATE POWER EXHAUST UNIT MODEL NOMINAL TONS NUMBER REQUIRED V-Ph-Hz PART NUMBER 208/230-3-60 CRPWREXH068A00 17.5 460-3-60 CRPWREXH069A00 575-3-60 CRPWREXH070A00 208/230-3-60 CRPWREXH068A00 460-3-60 CRPWREXH069A00 48/50FC, 50FCQ 575-3-60 CRPWREXH070A00 582K/559K/547K...

  • Page 3: Installation

    INSTALLATION Power and Control Wiring Unpack the contents of the crate. Use Table 3 to confirm that Central the kit contains all of its parts. Terminal Board The power exhaust motor is factory wired to the high speed tap (terminal 1). To change the motor speed move the black wire to the desired speed tap on the motor per Table 4.

  • Page 4: Power Exhaust Installation For Vertical Return Air

    LEGEND OFC – Outdoor Fan Connector PEM – Power Exhaust Motor PER – Power Exhaust Relay PLx-y – Plug x–Pin y CAP – Capacitor Fig. 4 — Power Exhaust Wiring Diagram Install three No. 10 x 5/8 in. serrated head screws Power Exhaust Installation for Vertical Return Air Application (AL48AM217) in the three locations shown in Fig.
  • Page 5 compartment is accessible by removing the control box side economizer hood screen, if the economizer hood is already installed on the unit. Route the PL-9 plug, supplied with the power exhaust fan assembly, through the bottom plug access hole in the econo- mizer motor compartment and through the top plug access hole.

  • Page 6: Power Exhaust Installation For Horizontal Return Air

    size begin at least 5 ft away from the back of the outside air Power Exhaust Installation for Horizontal Return hood. Provide a 42.5 in. W x 23.2 in. H opening in the side of Air Applications the return air duct, as shown in Fig. 11. NOTE: Any obstruction closer than 5 ft will interfere with CAUTION airflow and result in rain entering the hood through the filters.

  • Page 7: Power Exhaust Functional Check

    24 Vac Open Free Cool Fig. 13 — EconoMi$er IV Controller (HH63AW001- W7212 Honeywell Controller) The controller must be in occupied mode to energize the power exhaust fans. To set the controller to occupied mode, check the “CUT FOR OCCUPANCY” jumper on the central terminal board.

  • Page 8: For Units With W7220 Economizer

    • SETPOINTS tailed Start-up instructions. • SYSTEM SETUP © 2022 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53480350-01 Printed in U.S.A. Form IIK-CRPWREXH068-05 Pg 8...

This manual is also suitable for:

Crpwrexh069a00Crpwrexh070a00

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