Instruction/ maintenance manual of the product IO-402G Goodman Mfg
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CONDENSING AC UNIT SINGLE / THREE PHASE AIR CONDITIONERS INSTALLATION & SERVICE REFERENCE © 2010-2012 Goodman Manufacturing Company, L.P. 5151 San Felipe, Suite 500, Houston, TX 77056 www.goodmanmfg.com -or- www.amana-hac.com P/N: IO-402G Date: May 2012 See unit rating plate for initial charge.
2 Installation Clearances Special consideration must be given to location of the con- densing unit(s) in regard to structures, obstructions, other units, and any/all other factors that may interfere with air circulation.
3 Use only refrigerant grade (dehydrated and sealed) copper tub- ing to connect the condensing unit with the indoor evaporator. After cutting the tubing, install plugs to keep refrigerant tubing clean and dry prior to and during installation. Tubing should always be cut square keeping ends round and free from burrs.
4 Refrigerant Line Connections NOTICE THIS UNIT IS SHI PPED WITH A NITROG EN/HELIUM HOLDING CH ARGE O NL Y . UNI T MU ST BE EV ACUA TED AND CHARGED PER INST ALLA TION INSTRUCTIONS WITH REFRIGERANT LISTED O N SERIAL RA TING PLA TE.
5 NOTICE THIS UNIT IS SHI PPED WITH A NITROG EN/HELIUM HOLDING CH ARGE O NL Y . UNI T MU ST BE EV ACUA TED AND CHARGED PER INST ALLA TION INSTRUCTIONS WITH REFRIGERANT LISTED O N SERIAL RA TING PLA TE.
6 Local codes often require a disconnect switch located near the unit; do not install the switch on the unit. Refer to the installa- tion instructions supplied with the indoor furnace/air handler for specific wiring connections and indoor unit configuration.
7 Charge V erification REFRIGERANT UNDER PRES SUR E! • Do not over charg e sy stem w ith refr iger ant. • Do not opera te uni t i n a va cuu m or a t ne gative p res- sure. Fa il ure t o fol l o w pro per proc e dur es ma y ca use pr ope rty da m ag e , pe r sona l i nj ur y or de a t h.
8 L I Q UI D PR E SSU R E S ATU RATED LIQUI D T E M P ER A T U R E º F P SIG R - 2 2 20 0 1 0 1 21 0 1 0 5 22 0 1 0 8 22 5 1 1 0 23 5 1 1 3 24 5 1 1 6 25 5 1 1 9 26 5 1 2 1 27 5 1 2 4 28 5 1 2 7 29 5.
9 Fixed Orifice CAUTION T o pre ven t pe rsona l injury , carefully c onn ect a nd disconne ct manifold ga uge ho ses. Es capin g liqu id re frigerant can ca use burns. Do no t ven t refrige rant into the atm osph ere. Re cove r all refrigerant during sy stem rep air a nd befor e final un it disp osal.
10 T roubleshooting Information For detailed service information refer to the Remote Condensing Unit Service manual. Complaint Unsatisfact ory Cooling POSSIB LE CAUSE DOT S IN ANA LYSIS GUIDE INDICATE.
11 THIS PAGE INTENTIONALL Y LEFT BLANK.
12 SPLIT SYSTEMS AIR CONDITIONING AND HEA T PUMP HOMEOWNER’S ROUTINE MAINTENANCE RECOMMENDA TIONS We strongly recommend a bi-annual maintenance checkup be performed before the heating and cooling seasons begin by a qualified servicer .
Important Safety Instructions The following symbols and labels are used throughout this manual to indicate immediate or potential safety hazards. It is the owner’s and installer’s responsibility to read and comply with all safety information and instructions accompanying these symbols.
2 Use field-supplied spreader bars when lifting the unit to mini- mize the possibility of lifting cable/straps damage. To protect the cabinet louvers, use protective material such as plywood behind the cable/straps. Arrange the straps to form a central suspension point.
3 To a void po s sib le ex plo si on, use on ly ret u rna bl e ( n ot disp osable) serv ice cyli nders w hen r emovi ng r ef rig- erant fro m a s y stem. • Ensure th e cyli nd er is free of dama ge which coul d l e ad t o a lea k o r e xplos i on . • Ensure the hy drostat ic test date do es not excee d 5 years.
4 Refrigerant Line Connections NOTI CE THIS UN IT IS SHIP P ED WIT H A NITROGEN /H E LIU M HOL DING CHAR GE ONL Y . UNIT MUS T BE EVAC UATED AN D CHA RG ED P ER I NS T AL LA TIO N INSTR U CTIONS WIT H R EFRIG ERA NT L ISTED ON SERIAL RATING PLATE. NOTE: Holding charge must be removed before brazing.
5 5000 4500 4000 3500 3000 2500 2000 1500 1000 500 0 1 2 3 4 5 6 7 8 9 10 LEA K(S) PRESENT MINU T E S V ACUUM IN M IC RON S CONDENSIBLES OR SMALL LEAK PR ESENT NO LEA KS NO CO NDENSIBLES • If the pressure rises to 1000 microns or less and remains steady the system is considered leak-free; proceed to startup.
6 Example: A 7 ½ T on unit i s t o be i nstal led. The dist ance fr om the building to the u nit is 75’. Ca lculate the m inimum wire size assuming no mor e than 2% volt age d rop .
7 For the 7-1/2 ton unit starting charge should be 15 lb of R-22 and 18 lbs for the 10 ton unit. The length of line set, indoor unit airflow, condensing unit location and number of tubing fittings will have an impact on final unit charge amount. Turn the elec- trical power on, and let the system run.
8 TROUBLESHOOTING ANAL YSIS T ABLE CO M P LAIN T PR O BA BL E CA USE RE M ED Y 1 . E x c essi v e c harge o f r efr i ger ant i n s y stem . 1 . Purge o r pump- do wn ex c ess i v e c harge. 2 . Inadeq uate s up pl y of ai r acros s the 2. M a k e ce r tai n that c o i l i s no t foul ed i n any c onde ns er c oi l.
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If you already are a holder of Goodman Mfg IO-402G, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Goodman Mfg IO-402G.
However, one of the most important roles played by the user manual is to help in solving problems with Goodman Mfg IO-402G. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Goodman Mfg IO-402G along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
