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York B2CH180 manual

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Table of contents for the manual

  • Page 1

    GENERAL YORK Model B*CH units are single package heat pump s designed for outdoor installation on a roof top or a slab. These units can be equipped with factory installed electric heaters for supplemental heating applications. The units are completely assembled on rigid, permanently attached base rails. All piping, refrigerant charge, and electrica[...]

  • Page 2

    035-18895-000-A-0902 2 Unitary Products Group General ................................................................................ 1 Inspection ............................................................................ 1 Reference ............................................................................ 1 Nomenclature .....................[...]

  • Page 3

    LIMIT ATIONS These units must be installed in accordance with applicable national and local or municipal safety codes. Refer to T able 1 for Unit Application Dat a and to T able 2 for Electric Heat Application Data. If components are to be added to a unit to meet local codes, they are to be installed at the dealer's and/or the customer's [...]

  • Page 4

    FIXED OUTDOOR AIR INT AKE DAMPER This damper assembly is shipped inside the return air compartment. It is completely assembled and ready for installation. A damper baffle inside the hood is adjustable to provide variable amounts of outdoor air int ake on units that are not provided with an economizer or motorized damper option. Refer to Figure 3. G[...]

  • Page 5

    insulated wires 1.0mm 2 (#18 A WG) should be used to connect thermostat to unit. Eight conductors are required. The subbase on the low voltage thermostat includes an “Emergency Heat ” position on the system switch and a pilot light. In the “Emergency Heat” position, the thermostat provides electric resistance heat only . The compressors wil[...]

  • Page 6

    035-18895-000-A-0902 6 Unitary Products Group These heaters are located within the central compartment of the unit with the heater elements extending into the supply air chamber . Refer to Figure 7 for access panel location. Fuses are supplied, where required, by the factory . Some KW sizes require fuses and others do not. Refer to T able 2 for min[...]

  • Page 7

    035-18895-000-A-0902 Unitary Products Group 7 WEIGHTS (kg. / lbs.) BASIC UNIT 180 948 / 2091 OPTIONS Economizer 73 / 160 Motorized Damper 68 / 150 Electric Heater 18 kW 1 1 / 25 36kW 14 / 30 54 kW 16 / 35 72 kW 18 / 40 ACCESSORIES Roof Curb 180 79 / 175 Barometric Damper 20 / 45 Wood Skid* 180 91 / 200 * Allows handling of unit using 2286mm (90&quo[...]

  • Page 8

    035-18895-000-A-0902 8 Unitary Products Group FIG . 7 - DIMENSIONS AND CLEARANCES All dimensions are in millimeters and inches, unless otherwise specified. They are subject to change without notice. Certified dimen - sions will be provided upon request. CLEARANCES (mm / in.) Front 914 / 36 Back 610 / 24 (Less Economizer) 1245 / 49 (With Economizer)[...]

  • Page 9

    035-18895-000-A-0902 Unitary Products Group 9 FIG . 7 (Cont'd.) - DIMENSIONS AND CLEARANCES DET AIL “X” ACCESSOR Y SIDE SUPPL Y AND RETURN AIR DUCT OPENINGS DUCT COVERS - Units are shipped with all air duct openings covered. For sideflow duct applications; 1.Remove and discard the side supply and return air duct covers. 2.Connect ductwork [...]

  • Page 10

    035-18895-000-A-0902 10 Unitary Products Group T ABLE 4 - SUPPL Y AIR BLOWER PERFORMANCE BLOWER SPEED, RPM MOTOR PULLEY (TURNS OPEN)* AIRFLOW 1.77 m 3 /s 2.07 m 3 /s 2.36 m 3 /s 2.66 m 3 /s 2.95 m 3 /s ESP (Pa) Output (kW) Input (kW) ESP (Pa) Output (kW) Input (kW) ESP (Pa) Output (kW) Input (kW) ESP (Pa) Output (kW) Input (kW) ESP (Pa) Output (kW)[...]

  • Page 11

    035-18895-000-A-0902 Unitary Products Group 11 DESCRIPTION EXTERNAL ST A TIC PRESSURE DROP - RESIST ANCE, iwg/Pa m 3 /s (CFM) 180 UNIT 1.77 (3750) 2.12 (4500) 2.48 (5250) 2.83 (6000) WET COIL 0.1 / 25 0.1 / 25 0.1 / 25 0.1 / 25 ELECTRIC HEA T OPTIONS 18 kW 0.1 / 25 0.1 / 25 0.1 / 25 0.1 / 25 36 kW 0.1 / 25 0.1 / 25 0.2 / 50 0.2 / 50 54 kW 0.1 / 25 [...]

  • Page 12

    COOLING SYSTEM The cooling section is a complete factory package utilizing an air-cooled condenser . The system is factory-charged with Refrigerant-22. The compressors are hermetically sealed, internally sprung and base-mounted with rubber-insulated hold-down bolts. The compressors also have inherent (internal) protection. If there is an abnormal t[...]

  • Page 13

    HEA T ANTICIP ATOR SETPOINT It is important that the anticipator setpoint be correct. T oo high a setting results in longer heat cycles and a greater temperature swing in the conditioned space. Reducing the value below the correct setpoint causes shorter “ON” cycles and may result in the lowering of the temperature within the conditioned space.[...]

  • Page 14

    DEFROST SEQUENCE OF OPERATION These heat pumps have a unique “ambient modified” time- temperature defrost control that automatically adjusts to changes in the outdoor temperature. The defrost control shortens the defrost initiation time periods above 2°C (35°F) and extends the defrost initiation time periods below 2°C (35°F . The control is[...]

  • Page 15

    035-18895-000-A-0902 Unitary Products Group 15 SECURE OWNER'S APPROV AL : When the system is functioning properly , secure the owner's approval. Show him the location of all disconnect switches and the thermostat. T each him how to start and stop the unit and how to adjust temperature settings within the limitations of the system. FIG . 1[...]

  • Page 16

    035-18895-000-A-0902 5005 Y ork Drive, Norman Oklahoma 73069 Subject to change without notice. Printed in U.S.A Copyright  by Y ork International Corporation 2002. All Rights Reserved.[...]