RESIDENTIALAIR HANDLERS AR SERIES
AR Multi-positionelectric air handler • Versatile up flow, right or left horizontal, and counter flow multi-position • May be located in closet, utility room, attic, or basement • Equipped with a check flow rater for Heat pump and Cooling Unit Operation • Power supply entry at top
Airflow Orientation Important: Remove the horizontal pan when unit is installed in unconditioned i.e. (Garage, Attic) application, or downflow applications, and install insulation kit on vertical (donut shape) drain pan. Insulation kits should be ordered as follows: DPI 18-30/20 (AR18-32) DPI 36-42/20 (AR36-42) DPI 48-61/20 (AR48-61) *Horizontal Right Discharge Tube and Drain conn. front Downflow discharge (with plastic vertical pan only) *Upflow Discharge Horizontal Left Discharge Tube and Drain conn. front
AR Air Handlers • All air handlers use direct drive motors. Power supply is 208/230 Volts, 60 HZ, 1 Phase • AR is designed for zero (0”) inch clearance, however, adequate access for service or replacement must be considered
Refrigerant tubing • Refrigerant tubing should be installed as to avoid undue stress. • Suction tube should be insulated with a closed cell insulation and the seams sealed
Condensate Removal • AR air handlers employ a draw-through coil, therefore a trap must be installed in the drain lines. • A “P” trap is required. • Precautions must be used not to over tighten the adapter at the drain pan connection. • A joint compound should be used to prevent leakage and act as a lubricant. • All condensate drain lines and drain traps should be adequately insulated. • The unit and the auxiliary drain pan must be adequately elevated to insure proper drainage.
Electrical connections • Copper wire is recommended for all electrical connections. • 24 Volt thermostat connections • Goodman Cooling and Heating thermostat part number is CHT18-60. • Goodman Heat Pump thermostat part number is HPT18-60.
Operating Tolerances & Ranges • +80 to -40 Degrees Celsius (+176 to -40 F) • 5% to 95% R.H. Non-Condensing • 18 to 30VAC Control Voltage • Frequency - 60Hz/50Hz • Approved to UL353
Normal Operation • Blower On Delay • “G” Input Energizes • Blower Motor energized after a 7 second delay • Blower Off Delay • “G” Input De-energizes • 65 Second Delay before Blower Motor turns off. • Field And Factory Speedup Test Mode • If “R” applied to “SPEEDUP” Terminal • Both “G” Delay Timings On & Off are Immediate • If “C” applied to SPEEDUP Terminal • Delay On Timing is 3 Seconds • Delay Off Timing is 5 Seconds
Field Returns • Handling Boards by Edges or Use ESD Ground Strap • Boxes or Bags for Field Returns • No Repeated Control Change-out • Moisture Control in Board Area • Return Tag Information
Ground Check • Meter set to Ohms or Resistance Setting • Place Meter from GROUND quick connect to chassis ground • Reading should be near Zero ohms • Issue: GROUND Quick Connect Loose ; causes board resetting when blower starts • Issue: Flame Sensing problems if improper grounding in system
Low Voltage Wiring for Heat Pumps 10 KW and Below
Low Voltage Wiring for Heat Pumps 15 KW and Above
Orifice Change • The restrictor (orifice) included in this unit should match the comparable capacity of the outdoor unit. • The restrictor (orifice) should be replaced before any tubing connections are made. • The capacity of the outdoor unit should never exceed the capacity of the indoor unit.
any questions? Thank you!