Carrier Omnizone 50XCR06 Installation, Start-up And Service Instructions Manual

Contents

8Step 3 — Install Evaporator (Supply)Ductwork — Connect ducts to evaporator section withflexible connections. Attach ducts to building structure and in-sulate with fiberglass and vapor barrier to prevent sound trans-mission and condensation.Step 4 — Install Return-Air Ductwork — Unit isdesigned for free return through the unit-mounted grille and fil-ters. When installing ductwork and filter rack, use acceptedductwork installation procedures and do not hang the ductworkfrom the unit. Follow all applicable codes.Step 5 — Check Return-Air Filters — Be sure fil-ters shipped with unit are the correct size (see Table 2). Neveroperate unit without return-air filters in place.Step 6 — Make Condenser Connections — In-stall air-cooled condenser in accordance with the installationinstructions provided with condenser. Connection locations forliquid and refrigerant discharge service lines are shown inFig. 1-5. Recommended line sizes are given in Table 3. Referto Carrier System Design Manual, Part 3, for standard refriger-ant piping techniques.Remote condenser units are shipped with a holding chargeof nitrogen. After refrigerant connections are made, release ni-trogen, evacuate, leak test, and charge system as described inthe Checking System Charge section on page 20.Step 7 — Install Condensate Drain Line — The50XCR unit has a drain connection for evaporator condensate.When connecting condensate drains from the unit to floordrains, sinks, or hoppers, connect drains downstream of trap toensure that condensate does not drain back into the unit.Make connections through the unit side panel. Some appli-cations may require connection to either galvanized steel orcopper drain pipe; consult local code requirements for details.See Fig. 8.Pitch drain pipe downward at a slope of at least 1/4-in. per ftfor proper drainage. Provide tees plugged on one side for cleanouts. Leave clearance for servicing, and observe all local sani-tary codes.The condensate trap should have a depth adequate to allow3-in. of water in the trap (see Fig. 8) with the unit running.Table 3 — Recommended Line Sizes (in.)LEGENDSPREADER BARSUPPORTSUNDER SKIDFig. 6 — 50XCR Unit Rigginga50-6556efFig. 7 — Unit ClearancesNOTE: Dimensions are in inches.a50-866024 (TYP)3636IMPORTANT: NEVER use pipe smaller than 3/4 inchesin the drain run.50XCUNIT SIZE CIRCUITLENGTH OF RUN (ft)0 to 15 16 to 25 26 to 50 51 to 75 76 to 100DIS LIQ DIS LIQ DIS LIQ DIS LIQ DIS LIQ06 1 5/8 1/2 7/8 1/2 7/8 1/2 7/8 5/8 7/8 5/808 1 5/8 1/2 7/8 1/2 7/8 1/2 7/8 5/8 7/8 5/812 1 7/8 5/8 7/8 5/8 11/8 5/8 11/8 5/8 11/8 5/814 1 7/8 5/8 7/8 5/8 11/8 5/8 11/8 5/8 11/8 5/816 2 11/8 5/8 11/8 5/8 11/8 5/8 13/8 7/8 7/8 7/824 2 11/8 5/8 11/8 5/8 13/8 5/8 13/8 7/8 11/8 7/8HG — Hot Gas (Refrigerant Discharge)LIQ — Liquid