Specifications
CRNGHIAT001A00
Installation Instructions
48PD05---06, 48PG03---14
HIGH ALTITUDE KIT ACCESSORY
GAS HEATING/ELECTRIC COOLING
SINGLE PACKAGE ROOFTOP U NIT
PACKAGE CONTENTS AND USAGE
ACCESSORY PART NO. USAGE CONTENTS
CRNGHIAT001A00
48PD05--- 06, 48PG03-14
11 Burner Orifices, Drill Size No. 44, 0.086 in.
11 Burner Orifices, Drill Size No. 45, 0.082 in.
11 Burner Orifices, Drill Size No. 47, 0.079 in.
8 Burner Orifices, Drill Size No. 48, 0.076 in.
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 ser-
vice air--conditioning equipment.
When working on 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.
Recognize safety information. This is the safety--alert symbol
.
When you see this symbol on the unit and in instructions or manu-
als, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and CAU-
TION. These words are used with the safety--alert symbol. DAN-
GER identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies a hazard which
could result in personal injury or death. CAUTION is used to iden-
tify unsafe practices which may result in minor personal injury or
product and property damage. NOTE is used to highlight sugges-
tions which will result in enhanced installation, reliability, or opera-
tion.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
and/or death.
Before beginning any modification, close the main gas supply
shutoff valve. Be certain that the main line electrical
disconnect switch is in the OFF position and lockout tag is
installed. Tag disconnect switch and gas valve with suitable
warning labels.
!
WARNING
GENERAL
The High Altitude Conversion Kit is used to install natural gas
units at elevations from 2000 ft to 7000 ft. Recommended orifice
sizes will derate the heating input by approximately 4% per 1000 ft
of elevation. For elevations above 7000 ft, contact the factory for
availability of alternate orifice sizes. (See Table 1.)
Table 1 – Altitude Compensation*
ELEVATION
(ft)
48PD, 48PG03---07
NATURAL GAS
ORIFICE†
48PG08---14
NATURAL GAS
ORIFICE†
0-1,999
45 43
2,000
47 44
3,000
47 44
4,000
47 44
5,000
48 45
6,000
48 45
7,000
48 47
8,000
49 47
9,000
49 47
10,000
50 48
11,000
51 49
12,000
51 50
13,000
52 50
14,000
52 51
*As the height above sea level increases, there is less oxygen per cubic foot
of air. Therefore, heat input rate should be reduced at higher altitudes.
Includes a 4% input r edu ction per each 1000 ft.
†Orifices available through your Carrier dealer.
INSTALLATION
Step 1 — Remove Gas Manifold Pipe
1. Close the manual shutoff valve on the gas supply piping.
2. Open gas section access door. (See Fig. 1.)
3. Set the switch on the main gas valve to the OFF position.
(See Fig. 2.)
4. Shut off power to unit and install lockout tag.
Copyright 2009 CAC / B D P D 7310 W. Morris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 9/ 09
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No:IIK---CRNGHI01--- 01
Replaces: 48PG--- 13SI