Carrier 42DH 06 Installation, Start-Up And Service Instructions Manual Download

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53420019-01

Printed in U.S.A.

Form 42DH-2SI

Pg CL-2

8-19

Replaces: 42DH-1SI

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- - -

CUT ALON

DOTT

LINE

T ALONG DOTTED LINE

Ductwork Connections

ARE DUCTWORK, FITTINGS AND GRILLES INSTALLED AS REQUIRED? (Y/N) __________
ARE FLEXIBLE DUCT CONNECTIONS AT UNIT?

(Y/N) __________

ARE THE PROPER SUPPLY AND RETURN GRILLE TYPE AND SIZE USED? (Y/N) __________
IS ALL DUCTWORK INSULATED, AS REQUIRED?

(Y/N) __________

IS OUTSIDE AIR CONTROLLED FOR FREEZE PROTECTION?

(Y/N) __________

Electrical Connections

REFER TO UNIT WIRING DIAGRAM TO ENSURE CONNECTIONS WERE MADE.
CONNECT INCOMING POWER SERVICE OR SERVICES.

__________

INSTALL AND CONNECT “FURNISH ONLY” PARTS.

__________

IS ALL FIELD WIRING IN CODE COMPLIANCE?

(Y/N) __________

Unit Start-up

PERFORM GENERAL VISUAL UNIT AND SYSTEM INSPECTION

__________

CHECK ALL WIRING FOR SECURE CONNECTIONS

__________

TIGHTEN ALL SET SCREWS

__________

CHECK CONDENSATE DRAIN CONNECTION

__________

VERIFY TRAP IS DEEP ENOUGH

__________

PRIME THE TRAP WITH WATER

__________

CHECK SUPPLY AND RETURN WATER CONNECTIONS FOR LEAKS

__________

FILL SYSTEMS WITH WATER/REFRIGERANT

__________

OPEN AIR VENT ON TOP OF COIL TO VENT AIR OUT OF SYSTEM

__________

FLUSH WATER SYSTEMS

__________

RECORD ELECTRICAL SUPPLY VOLTAGE

__________

CHECK FOR PROPER FAN ROTATION

__________

DUCTWORK AND GRILLES IN PLACE

__________

ALL UNIT PANELS AND FILTERS IN PLACE

__________

START FANS, PUMPS, CHILLERS, ETC.

__________

CHECK FOR OVERLOAD CONDITIONS OF ALL UNITS

__________

CHECK ALL DUCTWORK AND UNITS FOR AIR LEAKS

__________

BALANCE WATER SYSTEMS, AS REQUIRED

__________

BALANCE AIR SYSTEMS, AS REQUIRED

__________

RECORD ALL FINAL SETTINGS FOR FUTURE USE

__________

CHECK PIPING AND DUCTWORK FOR NOISE OR VIBRATION

__________

CHECK ALL DAMPERS FOR PROPER OPERATION

__________

VERIFY PROPER COOLING OPERATION

__________

VERIFY PROPER HEATING OPERATION

__________

REINSTALL ALL COVERS AND ACCESS PANELS

__________

VERIFY PROPER CONDENSATE DRAINAGE

__________

Recommended Maintenance
Quarterly

CHANGE AIR FILTERS

__________

Annually–In Addition to Quarterly Maintenance

INSPECT ALL WIRING CONNECTIONS AND TIGHTEN, IF NECESSARY

__________

CLEAN COIL AND DRAIN PAN

__________

CLEAN BLOWER WHEEL AS NEEDED

__________

Summary of Contents for 42DH 06

Page 1: ...isher available Read these instructions thoroughly and follow all warnings or cautions attached to the unit Consult lo cal building codes and appropriate national electrical codes in USA ANSI NFPA 70 National Electrical Code NEC in Canada CSA C22 1 for special requirements It is important to recognize safety information This is the safe ty alert symbol When you see this symbol on the unit and in i...

Page 2: ...ry or property damage resulting from improper or unsafe practices during the handling installa tion service or operation of any equipment CAUTION Disconnect all power prior to any installation or service unit may use more than one power source ensure all are disconnected Power to remote mounted control devices may not be supplied by unit Install approved Lock Out Tag Out protection devices on ALL ...

Page 3: ...epare Units For each unit confirm incoming and control power require ments match available power source Refer to unit nameplate and wiring diagram 1 Review all tags on unit to determine if shipping screws are to be removed Remove screws as directed 2 Rotate fan wheel by hand to ensure that fan is unrestricted and can rotate freely Inspect for shipping damage and fan obstructions Adjust blower whee...

Page 4: ...1 identify the correction factor and deduct this factor from the total weight See Fig 5 for operating weight information Weight informa tion is based on 8 row water filled coils and double wall cabi net construction For a different coil and cabinet options use the weight correction factor table Table 1 Total Unit Weight Adjustment NOTES 1 Unit weights shown in pounds 10 are based on the largest wa...

Page 5: ... that the unit is mounted flush to the outer edge of the end base rail at the aligning unit mounting holes as shown in Fig 8 It may be necessary to remove factory installed sheet metal screws to enable access to all mounting holes and to ensure proper fit Do not remove screws unless necessary Secure unit to base rail using No 8 x 1 2 in fasteners at the locations shown in Fig 7 and 8 two per side ...

Page 6: ...ct Be careful not to tape or seal the filter access panel INLET AND OUTLET DAMPERS INSTALLATION 1 Install actuator per manufacturer s instructions 2 Adjust damper shafts outward to extend past any obstacles that might cause interference Do not adjust inward end of shaft within a distance of 2 inches of bronze bushing 3 Position inlet damper and outlet damper to coincide with current or intended po...

Page 7: ...MILLIMETERS Unit Size H W A B C 3 76 A C 2 4 61 4 102 H 2 4 61 3 76 1 25 2 51 2 51 W B TOP VIEWS BTM REAR INLET 42DH TOP REAR INLET 42DH W 4 102 2 4 61 C 1 25 H A A B A 2 4 61 24 24 33 33 43 44 44 610 610 838 838 1092 1118 1118 28 28 37 37 47 48 48 711 711 940 940 1194 1219 1219 6 6 8 8 8 8 10 711 711 940 940 1194 1219 1219 18 50 18 50 20 25 20 25 20 25 22 75 31 00 470 470 514 514 514 578 787 11 1...

Page 8: ... 1 LH 11 15 16 7 13 16 13 5 16 9 5 8 7 RH 14 11 16 2 11 9 16 7 7 8 15 13 16 9 1 16 5 6 7 13 16 8 1 8 1 LH 11 15 16 7 13 16 13 5 16 11 3 16 9 3 16 RH 14 11 16 2 11 9 16 7 7 8 15 13 16 11 1 4 7 1 8 8 7 13 16 10 1 4 30 4 5 15 16 26 5 16 5 15 16 1 3 1 2 25 13 16 9 7 4 7 8 2 3 13 16 25 13 16 9 1 8 6 8 1 8 1 3 1 2 25 13 16 11 1 8 9 1 8 7 1 16 2 3 13 16 25 13 16 11 5 16 8 10 1 4 COIL HEADER CONNECTION SI...

Page 9: ...4 6 1 4 5 1 4 19 3 4 3 3 4 2 5 8 2 5 8 6 2 4 6 3 4 7 1 4 11 5 8 15 7 8 6 3 4 4 1 4 2 5 8 6 30 4 4 5 8 5 3 8 12 1 2 2 3 4 6 1 4 4 7 8 6 12 1 8 25 7 8 6 1 8 4 1 2 2 5 8 6 2 4 5 3 8 10 1 8 23 7 8 6 3 8 6 Horizontal left hand unit with pre heat coil shown Dimensions are in inches mm HR HOT WATER RETURN HS HOT WATER SUPPLY LL LIQUID LINE SL SUCTION LINE COIL HEADER CONNECTION SIZE NOMINAL OD IN INCHES ...

Page 10: ...51 16 10 x 7 37 3 959 47 1194 21 1 546 10 3 264 12 305 18 3 467 2 1 57 43 7 1115 15 3 401 2 7 73 46 1 1175 37 940 1 1 32 1 1 38 20 22 11 x 10 40 1 1022 48 1219 24 610 13 7 352 13 330 17 1 438 2 1 57 44 1 1124 18 457 2 7 73 47 1 1200 39 1 1033 2 3 60 2 51 30 12 x 12 40 1 1022 48 1219 32 1 819 16 1 413 14 356 16 406 7 1 181 44 1 1124 26 1 673 1 1 32 47 1 1200 39 1 1033 3 3 95 2 51 NOTES RH shown LH ...

Page 11: ... provided for reference only Dimensions may vary with options ordered 1 2 3 4 5 6 7 8 9 10 11 Note 7 Size Fan Size Depth Unit Depth Width Height Supply Duct Return Duct Mix Box Mounting Holes Aux Box M 06 9 x 6 51 1311 36 914 28 711 22 578 8 225 10 276 13 349 2 57 24 610 6 152 12 318 11 279 27 686 35 895 5 146 2 51 08 9 x 6 51 1311 36 914 28 711 22 578 8 225 10 276 13 349 2 57 24 610 6 152 12 318 ...

Page 12: ...ld wir ing shall be made in compliance with all governing codes and or dinances Compliance with all codes is the responsibility of the in stalling contractor All components furnished for field installation by either the facto ry or the controls contractor shall be located and checked for prop er function and compatibility Inspect all internal components for shipping damage Inspect all electrical c...

Page 13: ...ng any system balancing Cooling Heating System Prior to the water system start up and balancing flush the chilled hot water systems to clean out dirt and debris which may have collected in the piping during construction During this procedure all unit service valves must be in the closed po sition to prevent foreign matter from entering the unit and clog ging the valves and metering devices Straine...

Page 14: ...s High Med and Low airflow settings it is pre programmed at the factory to High speed and delivers the airflow and cooling heating capacity specified at the time of or der while Medium and Low speeds are set to defaults based on High speed Should airflow require adjustment after installation the control board settings for Low Medium and High could be adjusted by turning screws as shown in Fig 22 u...

Page 15: ...Electric Code NEC amps actual motor nameplate amps may vary 2 Motors are UL recognized constant speed brushless DC type open drip proof ball bearing multi voltage options 0 10 V control Table 6 Single Phase Electric Heater Availability LEGEND NOTES 1 Electric Heating Capacities BTUh Heater kW x 3413 2 Electric Heater Amperage for Single phase Power Heater kW x 1000 Applied Voltage MOTOR TYPE VOLTA...

Page 16: ...ularly replaced air filters will require less frequent coil cleaning Electric Resistance Heater Assembly Electric resistance heaters typically require no scheduled main tenance when unit air filters are changed properly The opera tion and service life may be affected by other conditions and equipment in the system The two most important operating conditions for an electric heater are proper airflo...

Page 17: ...ry or tell tale drain connection that will indicate a clogged main drain line by flow from tell tale connection Should algae and or bacteria growth become a concern con sult an air conditioning and refrigeration supply organization familiar with local conditions for chemicals or other solu tions available to control these agents Filters Throwaway Throwaway type filters commonly used on fan coil un...

Page 18: ...18 Fig 23 Filter Rack 4 FILTER 2 FILTER 1 FILTER MAGNETS DETAILX SEEDETAILX SEEDETAILY DETAILY 1 FILTERMOUNTINGHOLES 2 FILTERMOUNTINGHOLES D FILTERSUPPORTANGLEBRACKET A ...

Page 19: ...th Control Board Fig B No Electric Heat Three Phase Power with Control Board WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit ...

Page 20: ... with Control Board Fig D Two Element Heater Single Stage Heat Single Phase Power with Control Board WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit ...

Page 21: ...th Control Board Fig F Three Element Heater Single Stage Heat Three Phase Power with Control Board WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit ...

Page 22: ... with Control Board Fig H Six Element Heater Two Stage Heat Three Phase Power with Control Board WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit ...

Page 23: ... with Control Board Fig J Nine Element Heater Two Stage Heat Three Phase Power with Control Board WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit ...

Page 24: ...e Power with Control Board Fig L No Electric Heat Single Phase Power without Control Board WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit ...

Page 25: ... Board Fig N Single Element Heater Single Stage Heat Single Phase Power without Control Board WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit ...

Page 26: ...ut Control Board Fig P Three Element Heater Single Stage Heat Three Phase Power without Control Board WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit ...

Page 27: ...thout Control Board Fig R Six Element Heater Two Stage Heat Three Phase Power without Control Board WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit ...

Page 28: ...thout Control Board Fig T Nine Element Heater Two Stage Heat Three Phase Power without Control Board WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit ...

Page 29: ...L WIRING DIAGRAM EXAMPLES cont Fig U Nine Element Heater Three Stage Heat Three Phase Power without Control Board WARNING Wiring diagrams are provided as an example only ALWAYS refer to WIRING DIAGRAM attached to the unit ...

Page 30: ...right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53420019 01 Printed in U S A Form 42DH 2SI Pg 30 8 19 Replaces 42DH 1SI Carrier Corporation 2019 ...

Page 31: ...N __________ ARE FURNISH ONLY PARTS ACCOUNTED FOR Y N __________ IS THE UNITARRANGEMENT HAND CORRECT Y N __________ IS THE UNIT STRUCTURAL SUPPORT COMPLETE AND CORRECT Y N __________ Handling and Installation IS THE UNIT SECURED AND MOUNTED PROPERLY Y N __________ ARE MOUNTING GROMMETS ISOLATORS USED Y N __________ IS THE UNIT MOUNTED LEVELAND SQUARE Y N __________ IS PROPER ACCESS PROVIDED FOR TH...

Page 32: ...VERIFY TRAP IS DEEP ENOUGH __________ PRIME THE TRAP WITH WATER __________ CHECK SUPPLYAND RETURN WATER CONNECTIONS FOR LEAKS __________ FILL SYSTEMS WITH WATER REFRIGERANT __________ OPEN AIR VENT ON TOP OF COIL TO VENTAIR OUT OF SYSTEM __________ FLUSH WATER SYSTEMS __________ RECORD ELECTRICAL SUPPLY VOLTAGE __________ CHECK FOR PROPER FAN ROTATION __________ DUCTWORK AND GRILLES IN PLACE _____...

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