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Thermo Products AH2-A manual

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Table of contents for the manual

  • Page 1

    MAC-165 ECN 4392-MA 10 & 12 SEER AIR HANDLER INSTALLATION & SERVICE MANUAL MODELS: AH1-A, AH2-A PLEASE READ THE SE INSTRUCT IONS PRIOR TO INSTALLAT ION AND BEFORE PERFORMING ANY SERVICE OR MAINTENANCE. THES E INSTRUCTIONS MUST BE LEFT WITH T HE USER AND SHOUL D BE RETAINE D FOR FUTURE REFERENCE BY QUALIFIED SERVICE PERSONNEL. : Improper ins[...]

  • Page 2

    TABLE OF C ONTENTS SECTION B E G I N N I N G P A G E S A F E T Y S E C T I O N 1 KNOCKDOWN OF AIR HANDLER 3 REASSEMBLY OF AIR HANDL ER 3 I NSTALLATI ON OF A-COI L I N A VERTICAL APPLI CATION 3 I NSTALLATI ON OF A-COI L I N A HORIZ ONTAL APPLI CATION 4 I NSTALL ATION OF HOT WATER COIL 6 BLOWER AIR ADJ USTMENT 7 D U C T S Y S T E M 9 CFM CAPACITY CHA[...]

  • Page 3

    All installatio ns and services must be performed by qualified personnel. 1 SAFETY SECTION This page contains various warning s and cautions found throughout this Service and Installation Manual. Please read and comp ly with t he statements on the cover and the statem ents below. : Improper installation, adjustment, alteration, service, or maintena[...]

  • Page 4

    All installatio ns and services must be performed by qualified personnel. 2 I nstallation and service personnel are required by some states to be licensed. Persons not qualified shall not insta ll this equipment nor interpre t these instructions. All local codes and regulations take precedence over the instructions in this manual and should be foll[...]

  • Page 5

    All installatio ns and services must be performed by qualified personnel. 3 FOLLOW THESE STEP S FOR K NOCKDOWN OF AIR HAND LER: 1. Start with unit setting in a vertical position. (Fig ure A) 2. Remove screws from bottom door, middle door, top door, and top front panel. Remove doors and top panel of air handler. 3. Disconnect blower leads from blowe[...]

  • Page 6

    All installatio ns and services must be performed by qualified personnel. 4 INSTALLATIONS OF A-COIL IN HORIZONTAL AP PLICATION For the AH1-A, in all A-coil applications (1024E, 1030E, 1036E, and 1224-30G1) except the 1236G1, the A-coil spacer must be used. For the AH2-A, in all A-coi l applications t he A-coil spacer must be used. 1. Remove bottom [...]

  • Page 7

    All installatio ns and services must be performed by qualified personnel. 5 13. Position grommets in coil access panel to allow installation of trim plate, secure trim plate in place with screws, and seal connections with duct sealer or equivalent. NOTE: The air handler is factory assembled for left to right(horizontal) and vertical applications. I[...]

  • Page 8

    All installatio ns and services must be performed by qualified personnel. 6 Figure B3 INSTALLATION OF THE HOT WATER COIL: 1. Remove top door of air handler. 2. Slide hot water c oil's side hang er brackets into coil c hannel(retaining channel) in the a ir handler. See Figure B4 inset. Figure B4 3. Push coil into unit until the coil is stopped [...]

  • Page 9

    All installatio ns and services must be performed by qualified personnel. 7 5. Make appropriate hy dronic connections to inlet(blower side) and outlet(duct side) of coil and braze into place. 6. Seal connections through panel with duct sealer or equivalent. : If drilling or scre wing into panel or plate is ne cessary , make ce rtain drill does not [...]

  • Page 10

    All installatio ns and services must be performed by qualified personnel. 8 1. Determine the appropriate blower spe ed settings listed in table s below. 2. Set the blower motor speed to match air conditioning requirement, connect the red wire(cooling tap) to the appropriate fan speed on the ter minal strip located on the blower( see Figure D). 3. S[...]

  • Page 11

    All installatio ns and services must be performed by qualified personnel. 9 DUCT SYSTE M The duct sy stem and load sizing calculation should follow the design standards of Air Conditioning Contractors of America (ACCA) - manuals D & J - or the American Society of Heating, Refrige ration and Air Conditioning Engineers, I nc. (ASHRAE) Latest Edit[...]

  • Page 12

    All installatio ns and services must be performed by qualified personnel. 10 CFM CAPACITY CHARTS AH 1- A .2 D u ct Sta tic Pr e ssu r e wit h heat ing c oi l A nd appli c abl e E v apor at or C oil M odel CFM (HI ) CFM (M. HI ) CFM (M. LOW ) CFM (LOW ) 1024E and 1030E 1299 1123 992 821 1224-3 0G1 1756 1202 1073 880 1036E 1435 1231 1055 861 1236G1 1[...]

  • Page 13

    All installatio ns and services must be performed by qualified personnel. 11 DUCT SIZES FOR HOMES Velocity Approximately 800 F eet Per Minute THE INDOOR EVAPORATOR COIL 1. EVAPORATOR COIL is a finned coil through which air in the home is circulated. Heat from the air is transfer red to the liquid refrig erant inside the e vaporator coil. The c oils[...]

  • Page 14

    All installatio ns and services must be performed by qualified personnel. 12 TUBING LIN E SETS 1. SUCTION L INE is an insulated large copper tube connecting the outlet of the A/C evaporator to the suction inlet of the A/C CONDENSER. 2. LIQUID LINE is a single small tube connecting the outlet of the A/C condenser to the expansion valve inlet on the [...]

  • Page 15

    All installatio ns and services must be performed by qualified personnel. 13 75’-100’ TOTAL LI NE LENGTH MODEL SUCTION LINE LIQUID LINE 1224 & 1230 1” 1/2” 1236 & 1242 1-1/8” 5/8” NOTES: For line lengths over 25’ adjust charge accordingly per foot of variation from chart. .65 oz. per foot for 3/8” and 3/4” line set .674 oz[...]

  • Page 16

    All installatio ns and services must be performed by qualified personnel. 14 Fig ur e F 2. A trap is necessary in the suction line at the indoor evaporator coil if the indoor evaporator coil is more than 4 feet below the outdoor condensing unit. NOTE: Multiple suc tion line traps are re commended for long er or multiple horizontal line s. (See Fig.[...]

  • Page 17

    All installatio ns and services must be performed by qualified personnel. 15 A gradual loop in the tubing can be constructed to take up the ex cess tubing if y ou find that too much tubing has been brought onto a job. Such a loop MUST be kept in a horizontal (flat) plane to avoid trapping the oil. Refrigerant lines should be inserted into a suitabl[...]

  • Page 18

    All installatio ns and services must be performed by qualified personnel. 16 Read th e temperat ure at header assemb ly t o calculate th e superheat. Then read the suction pressure and then add the line loss of 2 lbs. for 25’ of tubing. Then convert pressure into temperature. Next, subtract the converted suction temperature from the measured coil[...]

  • Page 19

    All installatio ns and services must be performed by qualified personnel. 17 The following points must be checked by the inst aller and/or electri cian before the air conditioning sy stem is started: 1. Check every electrical connection of "PUSH-ON" or "S CREW -ON" terminal s to ensure it i s on tightly on its proper post. 2. Re[...]

  • Page 20

    All installatio ns and services must be performed by qualified personnel. 18 A return air opening can be cut in any of the four sides or the bottom of the UA cabinet. The AH AI R HANDLER is then placed on the UA adapter cabinet , inlet side down. The AH rests on t he support angles of the UA adapter cabinet. The UA cabinet is equipped with a perman[...]

  • Page 21

    All installatio ns and services must be performed by qualified personnel. 19 REPLACEMENT PARTS[...]

  • Page 22

    All installatio ns and services must be performed by qualified personnel. 20 AH2 - A Ai r Han d l e r wi t h HC2 - A Hy d r on i c Co i l O ut l et Ai r Tem er at ur e vs. H eat i n g C apaci t y ( GPM , PSI , Coi l Dr o p) 90 95 100 105 110 115 120 125 130 135 140 145 40 60 80 100 120 Heat i ng Capa c i t y ( M bt uh) Air Temp. (deg. F) 7 G PM ( .[...]