Goodman AC 18, AC 24, AC 36, AC 30 Installation & Operating Instructions Manual

INSTALLATION
FOR CANADA
& OPERATING INSTRUCTIONS
CEILING MOUNT AIR HANDLER
IO-162C 2550 North Loop West Suite 400 AC SERIES 4/02
AC SERIES
CERTIFIED
Made in the USA by:
Goodman Manufacturing Company, L.P.
Dimensions
Model A B C D
AC 18 37 1/4 37 11/16 30 6 1/2 AC 24 37 1/4 37 11/16 30 6 1/2 AC 30 43 1/4 40 11/16 36 6 1/2 AC 36 49 1/4 46 11/16 42 6 1/2
ELECT. HEATER LOCATION
AC 18, 24, 30, 36
FIGURE 1
LAYOUT FOR
To Drain
Drop Ceiling
Plenum
Outlet Duct
Grill For Return Air
And Service
FIGURE 2
DROP CEILING
INSTALLATION
2
SPECIAL INSTRUCTIONS
This indoor coil contains the flowrator distributor assembly, which consist of a flare nut, distributor body, copper tubes feeding the coil, and the internal flow check piston. Reference the enclosed “Piston Sizing Chart” for mix-matching of outdoor / indoor units.
CHANGE THE PISTON
This coil is furnished with a flow control piston installed that matches the BTUH capacity of the coil. A piston size that is too small will cause starving and one that is too large will cause flooding. The following chart indicates the condensing unit capacity and the recommended piston size.
CONDENSING UNIT
MODEL NOM. COOLING (BTUH) PART NO. PISTON SIZE
AC18 18,000 BT 13690-04 52 AC24 24,000 BT 13690-01 59 AC30 30,000 BT 13690-05 65 AC36 36,000 BT 13690-06 71
1. Using a back-up wrench on the flare fitting, remove the 3/8" flare nut.
2. Using the back-up wrench on the distributor body,
6. Replace 3/8" flare fitting with Teflon seal using back-up
remove the 3/8" flare fitting and Teflon seal.
3. Using the wire provided with replacement pistons, run wire (hooked end) through hole in piston.
7. Replace 3/8" flare nut using back-up wrench on flare
4. Hook nose end of piston and lift gently from distributor body.
8. Remove old piston size label from outside of distributor
5. Replace piston with one of proper size listed above, install piston with Teflon seal end of piston in distributor first. Do not force piston into distributor.
9. Check fitting for leaks after installation, evacuation and NOTE: With piston in distributor, seal end should be shown and should not be seen looking in end of distributor. Piston must be free to rotate and move up
If a combination is used that requires a piston size change, change the piston in the distributor on the indoor coil before installing the coil and follow the procedure shown below.
and down. Make sure piston is free to move in distributor body.
wrench on distributor body. Torque fitting with 8 to 10 ft. lb. Do not over tighten.
fitting. Torque 3/8" flare nut with 40 to 45 ft. lb.
body. Remove new piston size label from poly bag new piston came in and install new size label on outside of distributor.
charging of the low side is complete.
INTRODUCTION
WARNING: DO NOT CONNECT TO OR USE IN CONJUNCTION WITH THIS UNIT ANY DEVICES FOR THE PURPOSE OF SAVING ENERGY OR INCREASING OPERATING EFFICIENCIES, WHICH HAVE NOT BEEN TESTED AND APPROVED BY GOODMAN OR DESIGN CERTIFIED FOR USE WITH THIS UNIT. SERIOUS DAMAGE, REDUCED UNIT PERFORMANCE AND HAZARDOUS CONDITIONS MAY RESULT FROM THE USE OF DEVICES WHICH HAVE NOT BEEN APPROVED OR CERTIFIED BY GOODMAN.
This booklet contains the installation and operating instructions for your ceiling mount air handler. There are a few precautions that should be taken to derive maximum satisfaction from it. Improper installation can result in unsatisfactory operation or dangerous conditions and void the warranty. Read this booklet and any instructions packaged with accessories prior to installation. Give this booklet to the user and explain its provisions. The user should retain this booklet for future reference.
CHECKING PRODUCT RECEIVED
Upon receiving the unit, inspect it for any damage from shipment. Claims for damage, either shipping or concealed, should be filed immediately with the shipping company. Check the unit model number, specifications, electrical characteristics,
and accessories to determine if they are correct.
ORDERING PARTS
When reporting shortages or damages, or ordering repair parts, give the complete unit model and serial numbers as stamped on the unit’s nameplate. Order parts through your local contractor.
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