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Manual Carrier 50TFQ008-012

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  • Carrier 50TFQ008-012 - page 1

    Manufa cturer res erves the right to discon tinue, or chang e at any time , specificat ions or designs witho ut notic e and wit hout inc urring obligati ons. Catalo g No. 04-53500 019-0 1 Prin ted in U.S.A. Form 50 TFQ- 9SI Pg 1 9-05 Replaces: 50 TFQ-7S I Book 1 4 Ta b 5 a 5 a Installation, Star t-Up and Ser vice Instr uctions CONTENTS Page SAFETY ...

  • Carrier 50TFQ008-012 - page 2

    2 Fig. 1 — Roof Curb De tails ...

  • Carrier 50TFQ008-012 - page 3

    3 SLAB MOUNT (H orizontal Units Only) — Pro vi d e a l e ve l concrete slab that extends a minimum of 6 i n. beyond the unit cabinet on all sides. Install a gravel apron i n front of the outdoor coil air inlet to prevent grass and foliage from obstruct- ing air flow . NOTE: Horizontal units may be installed on a roof curb i f required. AL TERNA T ...

  • Carrier 50TFQ008-012 - page 4

    4 NO TES: 1. Dimension in ( ) is in mil limeters. 2. Hoo k rigg ing shackle s through h oles in ba se rail, as shown i n detai l “ A. ” Holes in base rails are centered around the unit center of gra vity . Use wooden t op skid when riggin g to prevent riggin g straps fro m dama ging unit . 3. Unit wei ghts d o not inclu de econom izer . See T a ...

  • Carrier 50TFQ008-012 - page 5

    5 Table 1 — P hysical D ata LEGEND Bhp — Brak e Hor sep ow er * W e i g h to f1 4 - i n .r o o fc u r b . UNIT SIZE 50TFQ 008 009 01 2 NOMINAL CAP ACITY (tons) 7 1 / 2 8 1 / 2 10 OPERA TING W EIGHT (lb) Unit 940 965 1015 Economi zer EconoMi $er IV 75 75 75 Roof Curb* 143 143 14 3 COMPRESSOR (Hermetic) Rec iproc at ing Scr oll Quantit y 222 Oil ...

  • Carrier 50TFQ008-012 - page 6

    6 Fig. 6 — Base U nit Dimensions ...

  • Carrier 50TFQ008-012 - page 7

    7 Step 5 — Make Electrical Connections FI E L D P OW E R S U P PL Y — All uni ts except 208/ 230-v units are factory-wired for the voltage shown on the unit name - plate. If the 208/230-v uni t is to be connected t o a 208-v power supply , t he transformer must be rewired by disconnecting the black wire from the 230-v 1 / 4 -in. male spade term ...

  • Carrier 50TFQ008-012 - page 8

    8 Table 2 — Electric Heatin g Capacities *T wo he ater p ackages req uired t o provide kW indic ated. †Use CRSINGL E008A00 for units with an electr ical convenience outlet . NO TES: 1. The rated h eater voltage is 2 40, 48 0, and 57 5 v . If power distr ibution volta ge varies fro m rated he ater voltage, heate r kW w ill var y ac cordingly . 2 ...

  • Carrier 50TFQ008-012 - page 9

    9 Table 3A — Electrical Data (Units Without Electrical Convenience Outlet) (cont ) NO TE: Legen d and Notes f or Electrical Data are on page 11. 50TFQ UNIT SIZE NOMINAL V- P H - H z IFM TYPE V O LTAG E RANGE COMPRESSOR (each) OF M FLA IFM FLA ELECTRIC H EA T* PO WER SUPPL Y DISCONNECT SIZE† Min Max RLA LRA Nominal kW** FLA MCA MOCP FLA LRA 009 ...

  • Carrier 50TFQ008-012 - page 10

    10 Table 3B — Electr ical Data (Units With Electrical Convenience O utlet) NOTE: Legend and Notes for Electr ical Data are on pa ge 11. 50TFQ UNIT SIZE NOMINAL V- P H - H z IFM TYPE VO L TAGE RANGE COMPRESSOR (each) OFM FLA IFM FLA ELECTRIC HEA T* PO WER SUPPL Y DISCONNECT SIZE† Min Max RLA LR A Nominal kW** FLA MCA MOCP FLA LRA 008 (7 1 / 2 To ...

  • Carrier 50TFQ008-012 - page 11

    11 Table 3B — Electrical Data (Units With Electrical Convenience Outlet) (cont) LEGEND *Heaters ar e field inst alled only . †Used to d etermine minimum di sconnect siz e per NEC . **Heater capacity (kW) is based on heater v oltage of 208 v , 24 0 v , 480 v , and 575 v . If pow er distribution v oltage to unit va ries from rated heater voltage ...

  • Carrier 50TFQ008-012 - page 12

    12 FI E L D CO N T R OL W I R IN G — Instal l a Carrier-approved accessor y thermostat assembly accordi ng to the installation instructions included with the accessory . Locate the thermostat assembly on a solid wall i n the conditioned space to sense aver- age temperature in accordanc e with the the rmostat insta llation instructions. NOTE: If u ...

  • Carrier 50TFQ008-012 - page 13

    13 Table 4 — Heat Anticipator Settings *kW is based on 240, 480, or 575 v . CONVENIENCE OUTLET — A n op t i on a l c onvenience out- let provides power for rooftop use. For maintenance personnel safety , the convenienc e outlet power is off when the unit dis- connect is off. Adjacent unit outlets may be used for service tools. An optional “Ho ...

  • Carrier 50TFQ008-012 - page 14

    14 PREMIERLINK™ CONTROL — Th e Pr e m ie r Li n k co n t ro l - ler is compatible with Carrier Comfor t Network® (CCN) devices. This control is designed t o allow users the a ccess and ability to change factory-defined settings, thus expanding the function of the standard unit control board. Carrie r ’ s di ag- nostic standard tier display t ...

  • Carrier 50TFQ008-012 - page 15

    15 T abl e 5 — P rem ier Link ™ Se nsor Usage *PremierL ink control require s Supply Air T emperatur e sensor 33 Z CSENSA T and Outdoor A ir T emperat ure Sensor HH79N Z 01 7 — Included wit h f actory-installe d PremierLink cont rol ; field-supp lied and field-in stalled with fie ld-installed Pre mierLink control. NO TES: 1. CO 2 Sensors (Opt ...

  • Carrier 50TFQ008-012 - page 16

    16 T B-1 R Y1 Y2 W1 W2 G C X 1 2 3 4 5 6 7 8 T B-3 1 2 3 4 5 6 7 8 T B-2 1 2 3 4 5 6 7 8 J6 ANAL OG J5 0-2 0m AI N J4 DISCRETE J1 PWR J2 COMMS J9 0-20 mA J8 Relays HK50AA0 39 BRN BRN WHT WHT RED PNK PNK ORN ORN ORN ORN GRA GRA ORN RED J7 PP/MP WHT BLK RED RED PNK WHT BLK PNK WHT BLU ORN YEL GRN BRN BRN RED RED BRN BRN BLK BLK BRN BRN BLU BLU 1 2 3 ...

  • Carrier 50TFQ008-012 - page 17

    17 Enthalpy Sensors and Control — The ent halpy control (HH57AC077) is supplied as a fie ld-installed accessory to be used with the economizer dampe r control option. The outdoor air enthalpy sen sor is part of the e nthalpy control. The sepa rate field-instal led acces sory return air e nthalpy sensor (HH57AC078) is required for differential ent ...

  • Carrier 50TFQ008-012 - page 18

    18 OP TIONAL ECONOMI$ER IV AND ECONOMI$ER2 — See Fig. 19 for EconoMi$er IV component loca tions. See Fig. 20 for EconoMi$er2 component loc ations. NOTE: These instructions are for inst alling the optional EconoMi$er IV and Ec onoMi$er2 only . Refer to t he accessory EconoMi$er IV or EconoMi$er2 installation instructions when field installing an E ...

  • Carrier 50TFQ008-012 - page 19

    19 6. Insert the hood divider between the hood sides. S ee Fig. 24 and 25. Secure hood divider with 2 screws on each hood side. The hood divider is also used as t he bot- tom fil ter rack f or the alum inum fi lter . 7. Open the filter c lips which are lo cated underneath t he hood top. Insert the aluminum filter into the bottom filter rack (hood d ...

  • Carrier 50TFQ008-012 - page 20

    20 4 3 5 2 8 6 7 1 10 11 9 12 PINK VIOLET BLACK BLUE YELLOW NOTE 1 NOTE 3 RUN 500 OHM RESISTOR - + OPTIONAL CO SENSO R4-2 0m A OUTPUT 50HJ540573 ACTUA TOR ASSEMBL Y RED WHITE ECONOMISER2 PLUG DIRECT DRIVE ACTUA TOR 2 NO TES: 1. S witch on actuato r must be in run posit ion for economizer to operate. 2. P remier Link™ cont rol requ ires that t he ...

  • Carrier 50TFQ008-012 - page 21

    21 ECONOMI$ER IV ST ANDAR D SENSORS Outdoor Air T emperature ( OA T) Sensor — The outdoor air temperature sensor (HH57AC074) is a 10 to 20 mA device used to measure the outdoor -air temperature. The outdoor -air temperature is used to determine when the EconoMi $er IV can be used for free cooling. The sensor is fac tory-installed on th e EconoMi$ ...

  • Carrier 50TFQ008-012 - page 22

    22 Differen tial Dry Bulb Control — For differential dry bulb control the standard outdoor dry bulb s ensor is used in conjunc- tion with an additional accessory dry bul b sensor (part number CR TEMPSN002A00). The accessory sensor must be mounted in the return airstream. See Fig. 34. W iring is provided in the EconoMi$er IV wiring harne ss. See F ...

  • Carrier 50TFQ008-012 - page 23

    23 CONTROL CURVE A B C D CONTROL POINT APPROX. °F (°C) A T 50% RH 73 (23) 70 (21) 67 (19) 63 (17) 1 2 1 4 1 6 1 8 2 0 2 2 2 4 26 28 30 32 3 4 3 6 3 8 40 42 4 4 46 9 0 1 0 0 80 70 6 0 50 4 0 3 0 20 1 0 E NT HA L P Y — B TU P E R PO U N D DR Y A IR 85 (29) 90 (32) 95 (35) 100 (38) 105 (41) 11 0 (43) 35 (2) 35 (2) 40 (4) 40 (4) 105 (41) 11 0 (43) ...

  • Carrier 50TFQ008-012 - page 24

    24 Exhaust S et Point Adj ustment — The exhaust set point will determine when the e xhaust fan runs based on damper position (if accessory power exhaust is installed). The set point is modi- fied with the Exhaust F an Set Point (EXH SET ) potentiometer . See Fig. 32. The set point represents the damper position above which the exhaust fans will b ...

  • Carrier 50TFQ008-012 - page 25

    25 CO 2 sensor to the actuator when the CO 2 concent ration in the space is at 1 100 ppm. The DCV set point may be left at 2 volts since the CO 2 sensor voltage will be i gnored by the EconoMi$er IV controller until it rises above the 3.6 volt set- ting of the minimum position potentiometer . Once the fully occupied damper position has been deter- ...

  • Carrier 50TFQ008-012 - page 26

    26 T o a lign the fan and motor pulleys: 1. Loosen the fan pulley set screws. 2. Slide the fan pulley along the fan shaft . 3. Make angular alignment by loosening the motor from the mounting plate. T o adjust belt tension: 1. Loosen the fan mot or mounting nuts. 2. Sizes 008 and 009 — Slide the motor mounting plate away from the fan sc roll for p ...

  • Carrier 50TFQ008-012 - page 27

    27 Table 10 — Fan Rpm at Motor Pulley Settings* *Approximate f an r pm shown. †Indicates standard motor and driv e package . **Indicates alternate drive package only . ††Indicates high-static motor and drive pac kage. Table 11A — Elec tric Heater Stat ic Pressur e* (in. wg) — 50TFQ00 8-012 *The static pressure must be added to e xternal ...

  • Carrier 50TFQ008-012 - page 28

    28 Table 12 — Fan Performance, 50TFQ008 — Vertical Discharge Units; Standard Motor and Drive* LEGEND *Motor drive range: 590 to 840 rpm. All other rpm s require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 2.40. AIRFLO W (C ...

  • Carrier 50TFQ008-012 - page 29

    29 Table 13 — Fan Perf ormance, 50 TFQ008 — Vertica l Discharge Un its; Alterna te Motor and Drive* LEGEND *Motor drive range: 685 to 935 rpm. All other rpm s require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 2.40. AIRFL ...

  • Carrier 50TFQ008-012 - page 30

    30 Table 14 — Fan Perfor mance, 50TF Q008 — V ertical Disch arge U nits; Hig h-Static M otor an d Drive* LEGEND *Motor drive range: 860 to 1080 rpm . All other rpms require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 3.70. ...

  • Carrier 50TFQ008-012 - page 31

    31 Table 15 — Fan Performance, 50TFQ009 — Vertical Discharge Units; Standard Motor and Drive* LEGEND *Motor drive range: 685 to 935 rpm. All other rpm s require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 2.40. AIRFLO W (C ...

  • Carrier 50TFQ008-012 - page 32

    32 Table 16 — Fan Perfor mance, 50TF Q009 — V ertical Disch arge U nits; Hig h-Static M otor an d Drive* LEGEND *Motor drive range: 860 to 1080 rpm . All other rpms require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 3.70. ...

  • Carrier 50TFQ008-012 - page 33

    33 Table 17 — Fan Performance, 50TFQ012 — Vertical Discharge Units; Standard Motor and Drive* LEGEND *Motor drive range: 685 to 935 rpm. All other rpm s require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 2.40. AIRFLO W (C ...

  • Carrier 50TFQ008-012 - page 34

    34 Table 18 — Fan Perf ormance, 50 TFQ012 — Vertica l Discharge Un its; Alterna te Motor and Drive* LEGEND *Motor drive range: 835 to 1085 rpm . All other rpms require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 2.90. AIRF ...

  • Carrier 50TFQ008-012 - page 35

    35 Table 19 — Fan Perfor mance, 50TF Q012 — V ertical Disch arge U nits; Hig h-Static M otor an d Drive* LEGEND *Motor drive range: 830 to 1130 rpm . All other rpms require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 5.25. ...

  • Carrier 50TFQ008-012 - page 36

    36 Table 20 — Fan Performance, 50TFQ0 08 — Horizontal Discharge Units; Stan dard Motor and Drive* LEGEND *Motor drive range: 590 to 840 rpm. All other rpm s require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 2.40. AIRFLO ...

  • Carrier 50TFQ008-012 - page 37

    37 Table 21 — Fan P erformance, 50 TFQ008 — Horizont al Discharge Units; Alte rnate Motor and Driv e* LEGEND *Motor drive range: 685 to 935 rpm. All other rpm s require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 2.40. AIR ...

  • Carrier 50TFQ008-012 - page 38

    38 Table 22 — Fan P erformance, 50TFQ0 08 — Horizontal Dis charge Units; High-Static Mo tor and Drive * LEGEND *Motor drive range: 860 to 1080 rpm . All other rpms require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 3.70. ...

  • Carrier 50TFQ008-012 - page 39

    39 Table 23 — Fan Performance, 50TFQ0 09 — Horizontal Discharge Units; Stan dard Motor and Drive* LEGEND *Motor drive range: 685 to 935 rpm. All other rpm s require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 2.40. AIRFLO ...

  • Carrier 50TFQ008-012 - page 40

    40 Table 24 — Fan P erformance, 50TFQ0 09 — Horizontal Dis charge Units; High-Static Mo tor and Drive * LEGEND *Motor drive range: 860 to 1080 rpm . All other rpms require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 3.70. ...

  • Carrier 50TFQ008-012 - page 41

    41 Table 25 — Fan Performance, 50TFQ0 12 — Horizontal Discharge Units; Stan dard Motor and Drive* LEGEND *Motor drive range: 685 to 935 rpm. All other rpm s require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 2.40. AIRFLO ...

  • Carrier 50TFQ008-012 - page 42

    42 Table 26 — Fan Per formance, 50 TFQ012 — Horizont al Discharge Units; A lternate Motor and Drive* LEGEND *Motor drive range: 835 to 1085 rpm . All other rpms require field- supplied drive. Refer to page 43 Gener al F an P erformance Notes. NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 2.90. AIR ...

  • Carrier 50TFQ008-012 - page 43

    43 Table 27 — Fan P erformance, 50TFQ0 12 — Horizontal Dis charge Units; High-Static Mo tor and Drive * LEGEND *Motor drive range: 830 to 1130 rpm . All other rpms require field- supplied drive. Refer to General F an P erformance Notes below . NO TES: 1. Boldface indicates field-supplied drive i s required. 2. Maximum continuous bhp is 5.25. GE ...

  • Carrier 50TFQ008-012 - page 44

    44 PRE-ST ART -UP Proceed as follows to inspect and prepa re the unit for initial start-up: 1. Remove all acces s panels. 2. Read and follow instructions on all W ARNING , CAU- TION, and INFORM A TIO N labels attached t o or shipped with unit. 3. Make the following inspections: a. Inspect for shipping and h andling damages su ch as broken lines, lo ...

  • Carrier 50TFQ008-012 - page 45

    45 Heating — T o start the unit, turn on the main pow er supply . Set the thermostat at HEA T position at a setting above room temperature, the fan at AU TO position. The first stage of the thermostat energizes the indoor -fan motor , compressor , and out door fan; the second stage energizes electric heater el ements, if i nstalled. Check the hea ...

  • Carrier 50TFQ008-012 - page 46

    46 • If SA T > SASP + 5 and economizer position >80% , economizer will go to m inimum positio n for 3 m inutes or until SA T > 6 8 F . • If compressor no. 1 is on then second stage of mechani- cal cooling will be ener gized. Other wise the first stage will be ener gized. • Integrator resets. • Economizer opens again and controls to ...

  • Carrier 50TFQ008-012 - page 47

    47 HEA T ING , U NIT WITH E CONOMI$ ER2, PRE MIERLINK ™ CO NTRO L AND A R OOM S ENS OR — Every 40 seconds the contro ller will calculat e the required heat stage s (maximum of 3) to maintain supply air t emperature (SA T) if the following qualifying conditions are met: • Indoor fan h as been on fo r at least 30 seconds. • COOL mode is not a ...

  • Carrier 50TFQ008-012 - page 48

    48 FI L T E R S — C lean or repla ce at the st art of each hea ting and cooling season, or more often if operat ing conditions require it. Replacem ent filter s must be the same dime nsions as original filters. OUTDOOR-AIR INLET SCREEN — Cl e an t he s c re en wi th steam or hot water and a mild detergent. Do not use di sposable filters in plac ...

  • Carrier 50TFQ008-012 - page 49

    49 TROUBLESHOO TING Unit T rou bleshootin g — For unit troubleshooting, re- fer to Fig. 50 and T able 28. EconoMi$er IV T ro ubleshooti ng — Se e T ab le 29 for EconoMi$er IV logic. A functional view of the EconoMi$er IV is shown in Fig. 51. T ypical settings, sensor ranges, and jumper positions are also shown. An EconoMi$e r IV simulator progr ...

  • Carrier 50TFQ008-012 - page 50

    50 5. T urn the DCV set point potentiomet er CW until the DCV LED turns off. The DCV LED should turn off when the potentiometer is approximately 9 v . The actuator should drive fully closed. 6. T urn the DCV and Exhaust potentiometers CCW until the Exhaust LED turns on. The exhaust contact s will close 30 to 1 20 seconds after the Exhaust LED turns ...

  • Carrier 50TFQ008-012 - page 51

    51 Fig. 50 — Typical Unit Wi ring Sch ematic (208/ 203-3 -60 Unit S hown) LEGEN D C— Contac tor , Compresso r CAP — Capaci tor CB — Circuit Breaker CLO — Compressor L ockout COMP — Compressor Motor DB — De frost Boa rd DFT — D efrost T her mostat EQUIP — Equipm ent FPT — F ree ze Pr otec tion Th ermost at HC — He ater Contac t ...

  • Carrier 50TFQ008-012 - page 52

    52 Table 28 — Heating and Cooling Troubleshooting PR OBLEM CA USE REMED Y Compresso r and Outdoor F an Will Not Start. P ower f ailure. Call power company . Fuse blown or circuit breaker tripped. Replace fuse or reset circ uit breaker . Defectiv e thermostat, contac tor , t ransf ormer , or control rela y . Replace component. Insufficient line v ...

  • Carrier 50TFQ008-012 - page 53

    53 Table 29 — EconoMi$er IV Input/Output Logic *For single enthalpy control, the module compares outdoor enthalpy to the ABCD set po int. †P ow er at N term inal determines Occ upied/Unoccupied setting: 24 vac (Occupied), no power (Unoccupied). **Modulation is based on the supply-air sensor s ignal. ††Modulation is based on the DC V signal. ...

  • Carrier 50TFQ008-012 - page 54

    Manufa cturer reser ves the right to discon tinue, or change at any time, specificat ions or designs w ithout not ice and without incurrin g obligations. Catalo g No. 04-53500 019-0 1 Pri nted i n U.S.A. For m 50 TFQ-9S I Pg 54 9- 05 R eplaces: 50TF Q-7S I Book 1 4 Ta b 5 a 5 a Copyright 2 005 Car rier Cor poration INDEX Access panel s 18 Barometri ...

  • Carrier 50TFQ008-012 - page 55

    ...

  • Carrier 50TFQ008-012 - page 56

    Manufa cturer reser ves the right to discon tinue, or change at any time, specificat ions or designs w ithout not ice and without incurrin g obligations. Catalog N o . 04-535000 19-01 Printe d in U.S .A. F or m 50TFQ -9SI P g CL-1 9- 05 Rep laces: 50TF Q-7SI Book 1 4 Ta b 5 a 5 a Copyright 2 005 Car rier Cor poration - ------------- ----------- --- ...

Manufacturer Carrier Category Heat Pump

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