Specifications

ManualsBrandsCarrier ManualsSmoke Alarm48/50HG014-028

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 111 Catalog No. 534-80235 Printed in U.S.A. Form 48/50H,P-18SI Pg 1 6-05 Replaces: New

Book1144

Tab 1a1b6a6b

Installation Instructions

Part Number CRECOMZR009E00 and CRECOMZR011E00

CONTENTS

GENERAL ........................................ 1

PACKAGE USAGE AND CONTENTS ..............1

SAFETY CONSIDERATIONS ...................... 2

INSTALLATION ................................. 2-6

CONFIGURATION .............................. 7-9

TROUBLESHOOTING............................10

GENERAL

The accessory economizer package uses microprocessor-

based controls to sequence mechanical cooling with cool out-

door air (free cooling) to satisfy the cooling load and minimize

energy consumption. Free cooling can be used alone or in

conjunction with mechanical cooling.

The standard economizer uses an outdoor-air temperature

sensor to sense outdoor-air temperature. When the outdoor-air

temperature is between two configurable ambient temperatures,

the economizer is allowed to cool. These temperature configura-

tions are the Economizer High Temperature Lockout (ECL.H)

and the Economizer Low Temperature Lockout (ECL.L). The

economizer will provide cooling when the outdoor temperature

is suitable as defined above by the lockout settings and if there is

a cooling demand. In addition, if an outdoor enthalpy sensor

accessory has been installed, then the enthalpy reading must

also be “low” before economizer cooling can occur.

When free cooling is available, the economizer sequences

free cooling with up to three stages of mechanical cooling to

maintain comfort in the space. When free cooling is not avail-

able, the economizer modulates to an adjustable minimum

position to maintain a supply of fresh air entering the building.

Optional barometric relief dampers provide natural building

pressurization control. An optional power exhaust system is

available for jobs requiring greater relief.

PACKAGE USAGE AND CONTENTS

NOTE: If unit is already equipped with an outdoor air hood, hood

parts in the accessory will not be used and may be discarded.

IMPORTANT: There are two different design revision

48/50HG units currently being produced. Because of

these differences, there are two different versions of

this accessory. This accessory literature covers acces-

sories manufactured for units with design revision 1.

Design revision 0 units are not covered in this acces-

sory book.

To determine the design revision, refer to the full unit

model number. See Fig. 1 for an example of an HG

model number. The design revision number in the model

number nomenclature is located in position 13.

IMPORTANT: Read these instructions completely

before attempting to install the accessory economizer.

UNIT SIZE PART NO. QTY CONTENTS

48/50PG20-24,

48/50HG014-024

(CRECOMZR009E00)

50TG500495 1 Damper Assy

50TG403161 1 Blockoff

50TG500303 1 Lower Hood Top Panel

50TG500301 1 Hood Side

50TG500302 1 Hood Side

50TG501090 2 Side Filter Guide

50TG500304 1 Upper Hood Top Panel

50TG500306 1 Filter Bracket

50TG501091 1 Filter Retainer Track

KH03DU350 3 Filter

50ZZ401127 1 Control Board

AL56AU130 5 No. 6 Screw

AL48AM307 10

-in. Screw x

-in.

AL31AZ308 25

-in. Screw x

-in.

AS41BZ133 3 Speed Nut

HY76TB110 5 Wire Tie

HY76TB125 1 Wire Tie

50TG402594 1 Harness Assy

— 1 Seal Strip

48/50PG28,

48/50HG028

(CRECOMZR011E00)

50TG500496 1 Damper Assy

50TG403163 1 Blockoff

50TG500303 1 Lower Hood Top Panel

50TG500301 1 Hood Side

50TG500302 1 Hood Side

50TG501090 2 Side Filter Guide

50TG500304 1 Upper Hood Top Panel

50TG500306 1 Filter Bracket

50TG501091 1 Filter Retainer Track

KH03DU350 3 Filter

50ZZ401127 1 Control Board

AL56AU130 5 No. 6 Screw

AL48AM307 10

-in. Screw x

-in.

AL31AZ308 22

-in. Screw x

-in.

AS41BZ133 3 Speed Nut

HY76TB110 5 Wire Tie

HY76TB125 1 Wire Tie

50TG402594 1 Harness Assy

— 1 Seal Strip

48/50HG014-028

48/50PG20-28

Large Rooftop Units with

COMFORT

LINK™ Controls

Economizer Package Accessory

Fig. 1 — Model Number Chart

PositionNo.123456789101112 13 141516

Example:48HGD016AA C 6 1 1 A A

DESIGN REVISION NUMBER

Summary of content (12 pages)

PAGE 1
48/50HG014-028 48/50PG20-28 Large Rooftop Units with COMFORTLINK™ Controls Economizer Package Accessory Installation Instructions Part Number CRECOMZR009E00 and CRECOMZR011E00 CONTENTS GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 PACKAGE USAGE AND CONTENTS . . . . . . . . . . . . . . 1 SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 CONFIGURATION . . . . . . .
PAGE 2
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.
PAGE 3
11. Connect the motor plug to the plug provided with the harness. (See Fig. 9.) 12. Install the insulated partition (block-off panel) by sliding the panel into the unit from the side. The damper side of the panel will slide along the top of the flange of the damper assembly, between the return and outdoor air damper blades. The panel should then be rotated upwards so that the mounting holes align with the holes in the panels at the end of the unit.
PAGE 4
g. Install the top part of the hood top using the 6 screws removed in Step 2. See Fig. 12. h. Install the filter retainer track along the bottom edge of the outdoor air hood using 4 screws provided. For filter removal, remove the four screws holding the filter retainer. The filters can then be removed, cleaned, or replaced. RELAYS IMPORTANT: If the return duct opening was covered prior to installation, remember to remove the covering so as not to block off the return air to the unit. ECB-J7 ECB-J9 15.
PAGE 5
WIRE HARNESS PLUG PL7 Fig. 9 — Wire Harness Routing INSULATED BLOCK-OFF PANEL MOUNTING HOLES MOUNTING HOLES Fig. 10 — Economizer Block-Off Panel Location Fig.
PAGE 6
TOP HOOD SECTION SEAL STRIP LOCATION HOOD SIDE ADD SEAL STRIP ADD SEAL STRIP INNER FILTER TRACK ADD SEAL STRIP BOTTOM HOOD SECTION ADD SEAL STRIP FILTER GUIDE FILTER RETAINER FILTER GUIDE FILTER HOOD SIDE UNIT BACK PANEL Fig. 12 — Outdoor Air Hood Details Fig.
PAGE 7
CONFIGURATION 5. Use the arrow keys to change the configuration from “NO” to “YES”, then press ENTER and ESCAPE to save the setting. 6. If additional economizer control accessories have been added or other configuration parameters are to be changed from the factory defaults, then repeat the following steps: a. Use the arrow keys to scroll up or down to the parameter to change. Press ENTER once to select the setting for configuration. b. Press ENTER again. The configuration value will flash. c.
PAGE 8
Table 2 — Air Quality Configuration Table (48/50PG Units) ITEM EXPANSION RANGE AIR.Q →IA.CF Air Quality Configuration IAQ Analog Input Config →IA.FN IAQ Analog Fan Config →II.CF IAQ Switch Input Config →II.FN IAQ Switch Fan Config →AQ.MN →EC.MN →OVR.P →OA.CF Econo Min IAQ Position Econo Minimum Position IAQ Override Position OAQ Analog Input Cfg →OAQ.L →AQD.L →AQD.H →DF.ON →DF.OF →I.4M →I.20M →O.4M →O.
PAGE 9
Table 4 — Indoor Air Quality Configuration Table (48/50HG Units) SUBMODE ITEM DISPLAY ITEM EXPANSION IAQ COMMENT IAQ Configuration Default: 0 if no IAQ sensor installed 1 if IAQ sensor installed 0 = No IAQ 1 = Demand Control Ventilation (DCV) 2 = Override IAQ 3 = Control Minimum Position Default: 0 0 = Never 1 = Occupied 2 = Always Default: 0 0 = Not Switch 1 = DCV NO 2 = DCV NC 3 = Override NO 4 = Override NC Default: 0 0 = Never 1 = Only When Occupied 2 = Always IA.
PAGE 10
TROUBLESHOOTING and Possible Causes, Economizer Troubleshooting, and Economizer Adjustment. See Table 6 for general economizer service analysis. Refer to the Controls, Start-Up, Operation, Service and Troubleshooting Instructions for more information on the following topics: Service Test, Diagnostic Alarm Codes Table 6 — Economizer Service Analysis PROBLEM Damper Does Not Move. POSSIBLE CAUSE Indoor Fan is off. Actuator is unplugged at motor or at economizer board.
PAGE 11
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9. 10. 11. 12. 13. 14. Copyright 2005 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 534-80235 Printed in U.S.A.