Carrier 50TJ016 Installation, Start-up And Service Instructions Manual

Also see for 50TJ016: Installation, Start-Up and Service Instructions Installation instructions

Contents

Install Motormastert I Controls — Only one Motormaster Icontrol is required per unit. The Motormaster I control mustbe used in conjunction with the Accessory 0° F Low Am-bient Kit (purchased separately). The Motormaster I devicecontrols outdoor fan no. 1 while outdoor fans no. 2 and 3 aresequenced off by the Accessory 0° F Low Ambient Kit.Accessory 0° F Low Ambient Kit — Install the Accessory0° F Low Ambient Kit per instruction supplied withaccessory.Sensor Assembly — Install the sensor assembly in the loca-tion shown in Fig. 23.Motor Mount — To ensure proper fan height, replace the ex-isting motor mount with the new motor mount provided withaccessory.Transformer (460 and 575-v Units Only) — On 460 and575-volt units a transformer is required. The transformer isprovided with the accessory and must be field-installed.Motormaster I Control — Recommended mounting locationis on the inside of the panel to the left of the control box.The control should be mounted on the inside of the panel,vertically, with leads protruding from bottom of extrusion.MOTORMASTER III CONTROL INSTALLATION(50TJ024 and 028 Only)Install Field-Fabricated Wind Baffles — Wind baffles mustbe field-fabricated for all units to ensure proper cooling cycleoperation at low ambient temperatures. See Fig. 22 for baffledetails. Use 20-gage, galvanized sheet metal, or similarcorrosion-resistant metal for baffles. Use field-supplied screwsto attach baffles to unit. Screws should be 1 ⁄4 -in. diameterand 5⁄8-in. long. Drill required screw holes for mounting baffles.Fig. 17 — Outdoor-Air Hood Component LocationFig. 18 — Seal Strip Location(Air Hood Cross-Sectional View)HOOD TOPPANELHOOD SIDEPANELS (2)BAFFLE(028 ONLY)LOWERFILTERRETAINERFILTER SUPPORTBRACKETHOOD DRAIN PANUPPER FILTER RETAINERBAFFLE (028 ONLY)LOWER FILTERRETAINERFILTER SUPPORTBRACKETNOTE: The outdoor-air hood comes with a baffle which is used on028 units only; discard baffle for 016-024 units.Fig. 19 — Outdoor-Air Hood Details+ENTHALPY SENSORFig. 20 — Outdoor-Air and Return-airEnthalpy Sensor13