Carrier 48PG16 Installation Instructions Manual

Also see for 48PG16: User's information manual

Contents

installation instructions

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53480022-01 Printed in U.S.A. Form 48PG-21SI Pg 1 12-05 Replaces: NewBook 1 4Tab 1a 6aInstallation InstructionsPart No. CRNGHIAT002A00HIGH ALTITUDE KIT USAGE AND CONTENTSSAFETY CONSIDERATIONSRead these instructions entirely before installing the acces-sory high altitude kit into the base rooftop unit.Installation, start-up, and servicing of this equipment can behazardous due to system pressures, electrical components, andequipment location (roofs). Only trained, qualified installersand service technicians should install, start up, and service thisequipment.When working on this equipment, observe precautions inthe literature and on tags, stickers, and labels attached to theequipment. Also observe any other safety precautions that mayapply.GENERALThe high altitude conversion kit is used to install natural gasunits at elevations as high as 7000 ft. Recommended orificesizes will derate the heating input by approximately 4% per1000 ft of elevation. For elevations above 7000 ft, see Table 1.INSTALLATIONStep 1 — Remove Gas Manifold Pipe1. Close the manual shutoff valve on the gas supplypiping.2. Open gas section access door. See Fig. 1.3. Set the switch on the main gas valve to the OFF posi-tion. See Fig. 2.4. Shut off power to unit and install lockout tag.5. Disconnect gas piping at unit gas valve.NOTE: Use a backup wrench to avoid twisting the gasmanifold pipe.6. Remove wires connected to gas valve. Mark each wireto ensure proper reassembly.7. Remove wires connected to the flame rollout switch.Mark wires.8. Remove wires connected to igniter and flame sensor.Mark wires.9. Remove the four screws that attach the gas manifoldpipe to the burner bracket and rotate the pipe awayfrom the unit. The pipe should NOT be removed fromthe wire bundle connecting to the IGC (integrated gascontroller) board. See Fig. 3.Table 1 — Altitude Compensation**As the height above sea level increases, there is less oxygen per cubic footof air. Therefore, heat input rate should be reduced at higher altitudes.Includes a 4% input reduction per each 1000 ft.†Orifices available through your Carrier dealer.Step 2 — Replace Orifice Fittings1. Remove standard orifice fittings from the manifoldpipe.2. Select the correct orifice size based on local elevation.Refer to Table 1.3. Install new orifice fittings.NOTE: Pipe sealant is not required. Never use Teflontape on fitting threads since loose pieces may plug gasorifices.Step 3 — Reinstall Manifold Pipe1. Attach manifold pipe to the burner bracket using fourscrews. See Fig. 3. Make sure that all orifice fittingsare properly seated in the burner inlets.2. Reconnect wires to the igniter, flame sensor, flamerollout switch, and gas valve.3. Reconnect gas piping to the gas valve.ACCESSORY PART NO. USAGE CONTENTSCRNGHIAT002A00 48PG16 9 Burner Orifices, Drill Size No. 31, 0.120 in.9 Burner Orifices, Drill Size No. 32, 0.116 in.Before beginning any modification, close main gas supplyshutoff valve. Be certain that the main line electrical discon-nect switch is in the OFF position and lockout tag isinstalled. Electric shock or fire could result. Tag disconnectswitch and gas valve with suitable warning labels.ELEVATION(ft)48PG16NATURAL GASORIFICE†0-1,999 302,000 303,000 314,000 315,000 316,000 317,000 328,000 329,000 3210,000 3511,000 3612,000 3713,000 3814,000 3948PG16Gas Heating/Electric CoolingSingle Package Rooftop UnitsHigh Altitude Kit Accessory

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