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Nordyne T3BN manual

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Table of contents for the manual

  • Page 1

    Outdoor Heat Pump User’ s Inf ormation and Installation Instructions T3BN Series High Effi ciency Commer cial Split System These instructions are pr imarily intended to assist qualifi ed individuals e xpe- rienced in the proper installation of heating and/or air conditioning appliances. Some local codes require licensed installation/ser vice pe[...]

  • Page 2

    2 2. Set the ther mostat temper ature to the desired temperature le v el using the temperature selector . Please ref er to the separate detailed thermostat user’ s manual f or complete instructions regarding ther mostat prog ramming. The outdoor unit and indoor blo wer will both cycle on and off to maintain the indoor temperature at the desired h[...]

  • Page 3

    3 T O MAINT AIN Y OUR HEA T PUMP— CA UTION: Be certain the electrical power to the outdoor unit and the furnace/air handler is disconnected before doing the follo wing recommended maintenance. 1. Regularly: a. Clean or replace the indoor air fi lter at the star t of each heating and cooling season, and when an accumulation of dust and dir t is v[...]

  • Page 4

    4 Read Y our W arranty Please read the separate w arranty document completely . It contains v aluable inf ormation about your system. GENERAL INFORMA TION Read the f ollowing instructions completely before perf or ming the installation. Outdoor Unit Section — Each outdoor unit is shipped with a refrigerant holding charge. NO TE: DO NO T USE ANY P[...]

  • Page 5

    5 The maximum recommended interconnecting refrigerant line length is 75 f eet, and the v er tical elev ation diff erence between the indoor and outdoor sections should not e xceed 20 f eet. Consult long line application guide for installations in e xcess of these limits. Filter Dryer Installation — A fi lter dryer is provided with the unit and i[...]

  • Page 6

    6 Electrical P ower Wiring — Electr ical po wer wiring must comply with the current provisions of the “National Electrical Code” (ANSI/NFP A 70) and with applicable local codes ha ving jurisdiction. Use of rain tight conduit is recommended. Electr ical conductors shall ha ve minimum circuit ampacity in compliance with the outdoor unit rating [...]

  • Page 7

    7 GR W 2 CE O Y Thermostat R Air Handler Heat Pump OD Section T ypical Heat Pump with Standar d Air Handler O NO TE: Jumper between W2 and E is required when no OD T -Stat is used. C & W2 to be connected to Electric Heat. Y W 2 C R Y O C G W 2 W 1[...]

  • Page 8

    8 Indoor Blower — Set the thermostat function s witch to COOLING and the fan s witch to ON. V erify that the indoor blo wer is operating and that airfl ow is not restricted. Set the f an s witch back to A UT O . Low-Pressure Switc h — A low-pressure s witch is f actor y-installed (see attached). This s witch is located in the suction line inte[...]

  • Page 9

    9 2. Jumper the “T2”-”DFT” test pins. This will indicate to the board that the defrost T -stat is closed(if the compressor is running). Defrost T -stat is closed at 32° or below and is open at 68° or abov e. But it’ s state is unknown if the temper ature is between 32°F and 68°F . The defrost ther mostat tells the board whether a defr[...]

  • Page 10

    10 Refrigerant Charging Charts 7.5 Ton HP TXV Charging Chart 150 175 200 225 250 275 300 325 350 375 400 75 80 85 90 95 100 105 110 115 120 125 130 135 Liquid Temperature (F) Liquid Pressure (psig) Add refrigerant w hen below curve Remove refrigerant w hen above curve[...]

  • Page 11

    11 Refrigerant Charging Charts 10 Ton HP TXV Charging Chart 150 175 200 225 250 275 300 325 350 375 400 75 80 85 90 95 100 105 110 115 120 125 130 135 Liquid Temperature (F) Liquid Pressure (psig) Add refrigerant w hen below curv e Remove refrigerant w hen above curve[...]

  • Page 12

    12 REFRIGERANT CHARGING CHAR T Heating Mode of Operation PR OCEDURE FOR CHARGING 10-T ON HEA T PUMP IN HEA TING MODE. 1. Ev acuate the refr igerant system. 2. Charge the system by w eighing in 30 lbs R-22 refrigerant. This is the recommended charge for 5/8 inch 15 f oot line set. F or line sets other than 15 feet add 9.0 oz. R-22 per additional 5 f[...]

  • Page 13

    13 RELA Y 4 2 3 1 6 5 T1 T2 T3 CCH C S R T1 T2 C Y O W2 R DFT DF1 DF2 E DEFROST CONTROL BOARD CY O W 2 R E L3 L2 L1 GRD REV VA LVE DFT LOW PRESSURE SWITCH THREE PHASE FIELD SUPPL Y CAP ACITOR CONT ACTOR OUTDOOR F AN MOTO R COMPRESSOR HIGH PRESSURE SWITCH T1 L1 L2 L3 T2 T3 ORANGE GRA Y BLACK HARNESS RED HARNESS GRA Y YELLOW HARNESS BLACK BLACK BLACK[...]

  • Page 14

    14 A CCESSORIES — Condensing Unit Low Ambient Kit 913549A- Maintains system pressures during low ambient conditions. PHYSICAL AND ELECTRICAL SPECIFICA TIONS / OUTDOOR UNITS 10.1 EER —High Effi ciency — Three Phase COPPER WIRE SIZE — A WG (1% V oltage Dr op) Supply Wire Length-Feet Supply Cir cuit 200 150 100 50 Ampacity 6 8 10 14 15 468 1 [...]

  • Page 15

    15[...]

  • Page 16

    INST ALLER: PLEASE LEA VE THESE INST ALLA TION INSTRUCTIONS WITH THE HOMEO WNER ¢708538G¤ 708538A 708538A (replaces 7085380) Specifi cations and illustr ations subject to change without notice and without incurring obligations. Printed in U.S .A. (08/08)[...]