York B2CH180 - Manuals - manualsarea.com

Page 2 - FIGURES; Description; TABLE OF CONTENTS

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

Page 3 - INSTALLATION

LIMITATIONS These units must be installed in accordance with applicablenational and local or municipal safety codes. Refer to Table 1 for Unit Application Data and to Table 2 forElectric Heat Application Data. If components are to be added to a unit to meet local codes,they are to be installed at th...

Page 5 - POWER AND CONTROL WIRING; CAUTION: When connecting electrical power and control wir-; OPTIONAL ELECTRIC HEATERS

insulated wires 1.0mm 2 (#18 AWG) 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 pilotlight. In the “Emergency Heat” position, the thermostatprovides electric resi...

Page 6 - CAUTION: Extreme care must be exercised in turning both the

035-18895-000-A-0902 6 Unitary Products Group These heaters are located within the central compartment ofthe unit with the heater elements extending into the supply airchamber. Refer to Figure 7 for access panel location. Fuses are supplied, where required, by the factory. Some KWsizes require fuses...

Page 7 - TABLE 3 - PHYSICAL DATA

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 ElectricHeater 18 kW 11 / 25 36kW 14 / 30 54 kW 16 / 35 72 kW 18 / 40 ACCESSORIES Roof Curb 180 79 / 175 Barometric Damper 20 / 45 WoodSkid* 180 91 / 200...

Page 8 - UTILITIES ENTRY DATA; RETURN AIR

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 subjectto change without notice. Certified dimen-sions will be provided upon request. CLEARANCES (mm / in.) Front 914 / 36 Back 610 / 24 ...

Page 9 - DETAIL “X”

035-18895-000-A-0902 Unitary Products Group 9 FIG. 7 (Cont'd.) - DIMENSIONS AND CLEARANCES DETAIL “X” ACCESSORY SIDE SUPPLY AND RETURN AIR DUCT OPENINGS DUCT COVERS - Units are shipped with all air ductopenings covered.For sideflow duct applications;1.Remove and discard the side supply and return ai...

Page 10 - TABLE 4 - SUPPLY AIR BLOWER PERFORMANCE

035-18895-000-A-0902 10 Unitary Products Group TABLE 4 - SUPPLY 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 ...

Page 11 - TABLE 5 - STATIC RESISTANCES; TABLE 6 - BLOWER MOTOR AND DRIVE DATA

035-18895-000-A-0902 Unitary Products Group 11 DESCRIPTION EXTERNAL STATIC PRESSURE DROP - RESISTANCE, 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 HEAT OPTIONS 18 kW 0.1 / 25 0.1 / 25 0.1 / 25 0.1 / 25 36 kW 0.1 /...

Page 12 - NOTE: Prior to each cooling season, the crankcase heaters; COOLING SEQUENCE OF OPERATION; automatic reset device.; HEATING SEQUENCE OF OPERATION; FIRST STAGE HEAT; OPERATION

COOLING SYSTEM The cooling section is a complete factory package utilizing anair-cooled condenser. The system is factory-charged withRefrigerant-22. The compressors are hermetically sealed, internally sprungand base-mounted with rubber-insulated hold-down bolts. The compressors also have inherent (i...

Page 13 - NOTE: The tubes must be inserted and held in a position; TABLE 9 - HEAT ANTICIPATOR SETTING; TABLE 10 - SUPPLY AIR BLOWER MOTOR PULLEY; ADJUSTMENT; FIG. 9 - PRESSURE DROP ACROSS A DRY INDOOR; COIL VS SUPPLY AIRFLOW

HEAT ANTICIPATOR SETPOINT It is important that the anticipator setpoint be correct. Too high asetting results in longer heat cycles and a greater temperatureswing in the conditioned space. Reducing the value below thecorrect setpoint causes shorter “ON” cycles and may result inthe lowering of the te...

Page 14 - DEFROST SEQUENCE OF OPERATION; The defrost time cycle must be complete.

DEFROST SEQUENCE OF OPERATION These heat pumps have a unique “ambient modified” time-temperature defrost control that automatically adjusts tochanges in the outdoor temperature. The defrost controlshortens the defrost initiation time periods above 2°C (35°F)and extends the defrost initiation time pe...

Page 15 - SECURE OWNER'S APPROVAL; NORMAL MAINTENANCE; CAUTION: Prior to any of the following maintenance proce-; MAINTENANCE

035-18895-000-A-0902 Unitary Products Group 15 SECURE OWNER'S APPROVAL : When the system is functioning properly, secure the owner's approval. Show him the location of all disconnect switches and the thermostat. Teach him how to start and stop the unit and how to adjust temperaturesettings within th...