Page 2 - Fig. 1 — Roof Curb Details; NOTE: Rig by inserting hooks into unit base rails as shown. Main; Fig. 3 — Rigging Details
Fig. 1 — Roof Curb Details INDOOR AIR FAN MOTOR INDOOR AIR FAN MOTOR (50PQ900I5I ) TRANSITION DUCT Fig. 2 — Side Supply/Return Curb Details Do not install unit in an indoor location. Do not locate unit air inlets near exhaust vents or other sources of contaminated air. Although unit is weatherproof,...
Page 5 - adjustable
Table 1b — Physical Data — 50DP016,020 UNIT SIZE 50DP016 50DP020 OPERATING WEIGHT (lb) Unit (Outdoor Coil/Indoor Coil) AI/AI Al/Cu Cu/Cu Roof Curb Economizer Electric Heat 14701550 1630 1980 2110 2220 200 110 65 COMPRESSOR Quantity...Type 1 .06DA537 Semi-Hermetic — 6 Cylinders 2. 06DA824 OH (oz) 160...
Page 6 - CONNECTION
Step 3 — Field Fabricate Ductwork — Secure all ducts to building structure. Use flexible duct connectors between unit and ducts as required. Insulate and weatherproof all external ductwork, joints and roof openings with flashing and mastic in accordance with applicable codes. Ducts passing through ...
Page 7 - TBI; Fig. 10 — Field Power Wiring Connections; Fig. 11 — Field Control Thermostat Wiring
# (| )FPT DRAIN CONNECTION^ U (HALF COUPLING) BASE RAIL- u TO TRAP -!> Fig. 9 — Condensate Drain Piping Details Step 6 — Make Electrical Connections FIELD POWER SUPPLY ^ Unit is factory wired for voltage shown on nameplate. Units are provided with terminal bloek. When installing units, provide a ...
Page 10 - HOOD; UNIT MODEL
Step 8 — Install Outdoor Air Hood — The out door air hood is common to 25% air ventilation and economizer. If economizer is used, all electrical connec tions have been made and adjusted at the factory. Assemble and install hood in the field. NOTE: The hood top cover, upper and lower filter retaine...
Page 11 - Table 4 — Air Quantity Limits
w Table 4 — Air Quantity Limits UNIT MODEL MIN CFM MAX CFM 50DP,DPE012 3000 5000 50DP,DPE014 3750 6250 50DP016 4500 7500* 50DP020 5400 9000 'Indoor Fan Max Watts = 3000 HEATING — Turn on main power to unit. Set system selector switch at HEAT, fan switch at AUTO.; and thermostat at a setting above ro...
Page 12 - POWER; Fig. 18 — Control Panel, Variable Volume Limits
Variable Volume Units — Units suitable for use with variable volume air handling systems are equipped with 2 electric unloaders on the compressor. The control panel for these units (Fig. 18) consists of a step controller, a proportional thermostat, a 7-day timer and a power switch. Before starting u...
Page 13 - Fig. 20 — Step Controller Cam Adjusting; STEP CONTROL SWITCH; Fig. 19 — Step Controller Sequence
STEP CONTROLLER — The step controller consists of a reversible electric motor which drives a set of cams that activate up to 5 snap-acting switches. Each cam is adjust able to operate at any point on the 160 angular degrees of camshaft rotation. The differential of each system may be adjusted from ...
Page 14 - WARNING; ’Vi6 ± Vs; Fig. 22 — Outdoor Air Fan Adjustment
SERVICE A WARNING Before performing service or maintenance operations on unit, turn off main power switch to unit. Turn off accessory heater power switch if applicable. Elec trical shock could cause personal injury. Cleaning — Inspect unit interior at beginning of each heating and cooling season or...
Page 16 - SUCTION LINE TEMPERATURE F; Fig. 25 — Cooling Charging Chart —; Fig. 26 — Cooling Charging Chart; Printed in U S A
SUCTION LINE TEMPERATURE F Fig. 25 — Cooling Charging Chart — 50DPE012. 50DP014 (T D V) CO u z z o 20 30 40 50 60 SUCTION LINE TEMP (F) 70 Fig. 26 — Cooling Charging Chart 50DPE014, 50DP016 20 3 0 4 5 50 6 0 65 SUCTION LINE TEMPERATURE (F) Fig. 27 — Cooling Charging Chart — 50DP020 70 Manufacturer r...