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Carrier 50RTG manual

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Table of contents for the manual

  • Page 1

    Manufactu rer reser ves the rig ht to dis continue , or chan ge at a ny time, spec ificati ons or des igns without notice an d withou t inc ur ring obligations. PC 111 Catalog No . 535-0 04 Pr inted in U.S.A. Form 50 R-2SI Pg 1 8-02 Replaces: New Book 1 4 Ta b 5 a 5 a Installation, Star t-Up , and Ser v ice Instr u ctions CONTENTS Page SAFETY CONSI[...]

  • Page 2

    2 Follow all safet y codes. W ea r safety glasses and w ork gloves. Use quenching cloth for brazing opera t i ons . Have fire extinguisher available. Read these instruct ions thoroughly and follow all warnings or cautions attached to the uni t. Consult local building codes and the National Electrical Code (NEC) for special installation requirem ent[...]

  • Page 3

    3 IN SP EC T U NI T — T o prepare the unit for inst allation, com- plete the pr ocedures list ed below: 1. Compare the electrical data on the unit nameplate with ordering and shipping information to verify that the correct unit has been shipped. 2. V eri fy that the unit is t he correct model for the e ntering water tem perature of t he job. 3. D[...]

  • Page 4

    4 A C D B RETURN AIR SUPPL Y AIR AIR FLOW SUPPL Y AIR RETURN AIR TOP VIEW FRONT VIEW SIDE VIEW CONDENSA TE DRAIN 1" FPT 5-13/16 9-13/16 E F ELECTRICAL & PIPE CHASE OUTSIDE AIR OPENING OUTSIDE AIR 50RTG UNITS DIMENSIONS (in.) ABCDE F Outs ide Air Opening Siz e Wat e r In/Out (FPT) 03/04 39.52 43 .90 81.00 1 2.32 4.69 2 6.614 12.57 x 3 0.00 [...]

  • Page 5

    5 C A B 14.00 (REF) 14.00 (REF) STRUCTURAL SUPPOR T CURB WALL ROOF DECK/ROOFING BASE P AN OF UNIT FLASHING 3-7/8" (TYP) REQUIREMENTS BY CONTRACTOR'S HEIGHT DETERMINED (TYP) G H K J E F (FIELD SUPPLIED) TRANSITION DET AIL 14-15/16 23.000 2.00 TYP . 3.000 3.000 TRANSITION SUPPL Y AIR TRANSITION RETURN AIR Supply Air Retur n Air ROO F CURB A[...]

  • Page 6

    6 Step 4 — Mounti ng the Unit — For proper opera- tion, units must be mounted on a roof curb as shown in Fig. 3. Follow these guidelines when installing the roof curb: 1. Set unit on curb. 2. Align unit so that its return a nd supply air direct ion match the return and supply air opening in the roof curb frame. 3. Run both the return and supply[...]

  • Page 7

    7 Step 7 — Ele ctrical Wiring All field installed wiring, including the electrical ground, MUST co mply w ith the Natio nal E lectri cal C ode (N EC) as well as appl icable local codes. In addition, all fi eld wiring must conform to the Class II temperature limitations described in the NEC. Refer to unit wiring diagram Fig. 4 for a schema tic of [...]

  • Page 8

    8 SEE NOTE 5 SEE NOTE 6 NOTE 4 SEE Not Used R Status RV AL2 AL1 Relay Alarm A C JW1 LED Control Logic Microprocessor C G DC CO EH2 EH1 CO 24V P3 FP2 FP1 BRG T est Pins C P1 R O G W Y Y BR Not Used Dip Switch PM Compressor Off On 1 2 Relay FP2 FP1 HP LOC P2 CC CCG 1 2 4 3 6 5 8 7 10 9 12 VIO VIO FP2 BRN ORG RV S TR1 TR S + S +2 13 4 T T1 P P1 R O 5 [...]

  • Page 9

    9 Table 3 — 50RTG Elect rical Data LEGEND NO TE : Contact f ac tor y f or ov ersize blo wer motor electrical data. Table 4 — 50RT G03 Blowe r Performance LEGEND NO TES: 1. F an BHP includes drive losses. 2. Region “A” is s tandard dr ive pac ka ge. 3. Regions “B” and “C” require optional drive pac kages. 4. F or applications requiri[...]

  • Page 10

    10 Table 5 — 50RT G04 Blower P erformance LEGEND NO TES: 1. F an BHP includes drive losses. 2. Region “A” is s tandard dr ive pac ka ge. 3. Regions “B” and “C” require optional drive pac kages. 4. Region “D” represents ov ers ized motor and special shea ves. 5. F or applications requiring higher static pressures, contact y ou r lo[...]

  • Page 11

    11 Table 7 — 50RT G07 Blowe r Performance LEGEND NO TES: 1. F an BHP includes drive losses. 2. Region “A” is s tandard dr ive pac ka ge. 3. Regions “B” and “C” require optional drive pac kages. 4. Region “D” represents ov ers ized motor and special shea ves. 5. F or applications requiring higher static pressures, contact y ou r lo[...]

  • Page 12

    12 Table 9 — 50RTG10 Blower Performance LEGEND NOTES: 1. F an BHP includes drive losses. 2. Region “A” is standard drive pac kage. 3. Regions “B” and “C” require optional driv e packages. 4. Region “D” represents ov ersized motor and special sheav es. 5. F or applications requir ing higher static pres sures, contact your local rep[...]

  • Page 13

    13 Table 11 — 50RTG15 Blower Perf ormance LEGEND NO TES: 1. F an BHP includes drive losses. 2. Region “A” is s tandard dr ive pac ka ge. 3. Regions “B” and “C” require optional drive pac kages. 4. Region “D” represents ov ers ized motor and special shea ves. 5. F or applications requiring higher static pressures, contact y ou r lo[...]

  • Page 14

    14 Step 8 — Lo w V olta g e Wiring THERMOST A T CONNECTIONS — The thermostat should be wired directly to the Aquazone ™ control board. See Fig. 4 and 5. W A TER FREEZE PRO TECTION — The Aquazone control allows the field selection of source fluid freeze protection points through jumpers. T he factory setting of jumper JW3 (FP1) is set for wa[...]

  • Page 15

    15 10. Syste m Controls: T o ensure that no catastrophic system failures occur, verify that system controls are funct ioning and that the sequencing is corr ect. 11 . Freeze Protection for W ate r System : V erify that f reeze protection is provided for the building loop water system when outdoor design conditions require it. Inadequate freeze prot[...]

  • Page 16

    16 Boilerless Changeov er T emperature — Switch 8 on S1 pro- vides selection of boilerless changeover temperature set point. Select OFF for set point of 50 F or select ON for set point of 40 F . If switch 8 is set for 50 F , then the c ompressor will be used for heating as long as the FP1 is a bove 50 F . The compressor will not be used for heati[...]

  • Page 17

    17 NOTE: Three factors determine th e operating limits of a unit: (1) entering air temperature, (2) water t emperature and (3) ambient temper ature. Whenever any of these factors are at a minimum or maximum level, the other two factors must be at a normal level to ensure proper uni t operation. See T able 15. Table 15 — Operating Limits — 50RTG[...]

  • Page 18

    18 6. Open the return valve to send a pressure surge through the loop to purge any air pockets in the piping system. 7. A noticeable drop in fluid level will be seen in the flush cart tank. This is t he only indication of air in the loop. NOTE: If air is purged from the system while using a 10 in. PVC flush tank, only a 1 t o 2 in. level drop will [...]

  • Page 19

    19 OPERA TION P ower Up Mode — The unit will not operate until all the inputs, terminals and safety controls are ch ecked for normal operation. NOTE: The c ompressor will have a 5-minute an ti-short cycl e upon power up. Units with Aquazone ™ Comp lete C Co ntrol ST ANDBY — Y and W terminals are not active in standby mode, however the O and G[...]

  • Page 20

    20 Table 19 — C Control Current LED St atus and Alarm Relay Operations LEGEND NO TES: 1. Slow flash i s 1 flash ev er y 2 seco nds. 2. F ast flash i s 2 flash es ev er y 1 second. 3. EXAMPLE: “ Flashi ng Code 2 ” is rep resent ed b y 2 f ast fl ashes f oll ow ed by a 10-sec ond pause. T his sequ ence w ill rep eat co ntinually until th e faul[...]

  • Page 21

    21 Table 21 — Aquazone D Control Current LED Status and Alarm Relay Operations LEGEND NO TES: 1. If there is no f ault in memory , the F ault LED will flash code 1. 2. Codes will be displ ay ed with a 10-second F ault LED pause. 3. Slow flash is 1 flash e ver y 2 seconds. 4. F ast flash is 2 flashes ev er y 1 second. 5. EXAMPLE : “ Flashing Cod[...]

  • Page 22

    22 Chec king System Charge — Units are shipped with full operating charge. If recharging is necessary: 1. Insert thermometer bulb in insulating rubber sleeve on liquid line near filter dri er . Use a digital t hermometer for all temperat ure measurement s. DO NOT use a mercury or dial-type thermometer . 2. Connect pressure gage to discharge line [...]

  • Page 23

    23 SUCTION COMPRESSOR DISCHARGE COAX EXP ANSION VA LV E FP2 FP1 LIQUID LINE W A TER IN WA TER OUT CONDENSA TE OVERFLOW (CO) AIR COIL FREEZE PROTECTION W A TER COIL PROTECTION THERMISTOR ° F ° F AIR COIL LEGEND Fig. 11 — FP1 and FP2 Thermistor Location CO AX — Coaxial Heat Exchanger Airflow Refrigerant Liquid Line Fl ow[...]

  • Page 24

    24 Table 22 — Troubleshooting LEGEND RV — Rev ersing V alv e F A UL T HEA TING COOLING P OSSIBLE CA USE SOLUTION Mai n Po wer Proble ms X X Green Status LED Of f C hec k line voltage circuit bre aker and disc onnect. Check fo r line voltage betwee n L1 and L2 on the contacto r. Check fo r 24 V AC betw een R and C on controller . Check primary /[...]

  • Page 25

    25 Table 22 — Troubleshooting (cont) LEGEND RV — Rev ersing V alve F A UL T HEA TING COOLING POSSIBLE CA USE SOLUTION Only Compr essor Runs X X T hermostat wiring Check G wiring at hea t pump. J umper G and R for f an operati on. X X F an motor relay J umper G a nd R f or f an operatio n. Chec k fo r line vo ltage across BR contacts. Chec k f a[...]

  • Page 26

    Manufactu rer reser ves the rig ht to dis continue , or chan ge at a ny time, spec ificati ons or des igns without notice an d withou t inc ur ring obligations. PC 111 Catalog No . 53 5-004 Pr inted in U.S.A. Form 50 R-2SI Pg 26 8-02 Repla ces: New Book 1 4 Ta b 5 a 5 a Copyright 20 02 Car rier Cor po ration[...]

  • Page 27

    CL-1 50R TG ST ART -UP CHECKLIST CUSTOMER: ___________________________ JOB NA ME: _______________________________ ________ MODEL NO.:___________________________ SERIAL NO.:____________________ DA TE: _________ I. PRE-ST ART -UP DOES THE UNIT V OL T AGE CORRESPOND W ITH THE SUPPL Y VOL T AGE A V AILABL E? (Y/N) HA VE THE POWER AND CONTROL W IRING CO[...]

  • Page 28

    Manufacturer reser ves the right to dis continue , or chang e at any time, spec ifications or des igns witho ut not ice and withou t inc urrin g obligations. PC 111 C atalog No . 53 5-004 Pr inted in U.S.A. Form 50 R-2SI Pg CL-2 8-02 Replaces: New Book 1 4 Ta b 5 a 5 a Copyrigh t 2002 Carr ier C or poration - - - - - - - - - - - - - - - - - - - - -[...]