Page 2 - Fig. 2 — Roof Curb Dimensions; Field-Fabricated Ductwork
GASKET RIGID INSULATION (FIELD SUPPLIED) NOTE' Certified dimension drawings available upon request Fig. 2 — Roof Curb Dimensions 3-|"{ENDS OF UNIT) CANT STRIP (FIELD SUPPLIED) ROOFING MATERIAL (FIELD SUPPLIED) Field-Fabricated Ductwork — Secure all ducts to building structure. Use flexible duct ...
Page 3 - Fig. 3 — Unit Leveling Tolerances; Economizer Section; A CAUTION; Exhaust Air Hood Installation
CONDENSERANDCOMPRESSOR END HORIZONTAL Fig. 3 — Unit Leveling Tolerances Economizer Section ECONOMIZER HOOD INSTALLATION (Fig. 7) — The economizer mechanism and all electrical connections are factory installed and adjusted except as noted below. Hood assembly, outdoor air inlet screens and required h...
Page 4 - Fig. 4 Base Unit Dimensions
ALTERNATE CONTROL WIRE OPENING 3 AND 4g- K 0 ALTERNATE FIELD-POWER WIRING ( C O O L I N G ONLY UNIT ) INDOOR AIR FAN AND FILTER ACCESS PANELS OUTDOOR AIR FANS " (3) ' CONDUIT ALTERNATE DRAIN 2|" KO d" MPT CONN INSIDE) ALTERNATE POWER WIRE OPENING 3^“ NPT (HEATING/COOLING L-2^" UNIT) ...
Page 7 - Table 1 — Physical Data
Table 1 — Physical Data UNIT50DF 034 OPERATING WEIGHT (lb) 4400 Base Unit (includes heaters)Base Unit with Economizer 4600 COMPRESSOR Serviceable, Reciprocating Hermetic Quantity...Model 2...06DA Oil (3GS orBIUots) 10 (ea) REFRIGERANT CHARGE (R-22) System 1...System 2 (lb) 29.0...29.0 OUTDOOR AIR FA...
Page 8 - Table 2 — Electrical Data
Table 2 — Electrical Data NOMINAL VOLTS/PH/HZ VOLTAGE RANGE COMPR NO. 1 COMPR NO. 2 OUTDOOR FAN MTR INDOOR FAN MTR EXHAUST FAN MTR HEATERS POWER SUPPLY* Circuit 1 Circuit 2 Min Max RLA LRA RLA LRA Oly FLA Hp FLA Hp FLA kW FLA MCA MOCP MCA MOCP 15 46 0 _ _ _ _ 212 250 _ — 15 46 0 3 11 — — 223 250 — —...
Page 9 - Field Control Wiring; not; Fig. 12 — Shipping Locations — Remote Box; Return Air Filters
f Field Control Wiring STANDARD UNIT (WITHOUT ENERGY MANAGE MENT ACCESSORY) — Install a Carrier-approved accessory electronic thermostat on a subbase (or a trans mitter on subbase if remote sensor is used) per installation instructions included with the accessory. Note that the subbase must be use...
Page 10 - Fig. 13 — Control Box; Constant Volume Units
CIRCUIT BREAKERS CONVENIENCE OUTLET LOW AMBIENT LOCKOUT THERMOSTAT LOOIC PANEL Fig. 13 — Control Box MOVE SWITCH TOPOSITION FOR DESIRED HEATING SETBACK (A) HEATING SETBACK Fig. 14 (B)COOLING SETUP OR LOCKOUT Accessory Setback/Setup Module (Partial) START-UP Constant Volume Units COOLING (WITH OR WIT...
Page 11 - THERMOSTAT/TRANSMITTER; Crankcase heater is energized onlv when unit
r HEATING LEVER(RED) COOLING LEVER (BLUE) THERMOSTAT CAPTIVE TERMINAL MOUNTING SCREWS THERMOSTAT/TRANSMITTER Fig. 15 — Electronic Thermostat/Transmitter (without subbase) (Which must be ordered as an accessory) To Shut Off Unit— For standard units, set the subbase selector switch to OFF or set the c...
Page 12 - Fig. 17 — Adjusting Switch Make and Break Points
above enthalpy set point, the outdoor air dampers remain at minimum position.) Economizer acts as the first stage of cooling, providing “free cooling” with outside air. If outside air alone cannot satisfy the cooling requirements of conditioned space, economizer cooling is integrated with mechanical...
Page 14 - CAUTION; Cleaning; Fig. 19 — Resistance Range of the; VOLTAGES NECESSARY TO ACTIVATE LOGIC PANEL; Voltage Ramps
3. Connect one meter lead to logic panel terminal T and the other meter lead to the loose lead wire from the sensor. 4. Meter readings depend on temperature. Discharge sensor readings should be between 1500 and 4500 ohms. See Fig. 19. THERMOS!AT/TRANSMITTER (Fig. 15) 1. Set meter to 20 vdc scale. 2....
Page 15 - Table 3 — Indoor Air Fan Data; Lubrication; slight bow; Indoor Air Fan Adjustment
Table 3 — Indoor Air Fan Data EXTERNAL STATIC PRESSURE (in. wg) UNIT50DF CFM 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.20 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 9,000 690 2 86 755 3 40 812 3 91 865 4 42 916 4 94 960 5 42 1006 5 94 1052 6 48 ...
Page 16 - Fig. 21 — Outdoor Air Fan Adjustment; Damper Vent Position Setting; Do not manually operate; Refrigerant Charge
Outdoor (Condenser) Air Fan Adjustment (Fig. 21) — Shut off unit power supply Remove fan guard and loosen fan hub setscrews Adjust fan height using a straight edge laid across venturi. Tighten set screws and replace rubber hubcap to prevent hub from rusting to motor shaft. Fill hub recess with Perm...