Carrier 40QNB Installation, Start-up And Service Instructions Manual
Also see for 40QNB018: Owner's manualInstallation, Start-Up and Service Instructions
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Step 5 — Connect Condensate Drain Line —Observe all local sanitary codes when installing condensatedrains.1. Connect drain line by inserting a 5⁄ 8-in. rigid PVC pipeover the drain connection. Refer to Fig. 11.The drain tube extension must be securely fastenedto the condensate drain. Failure to do so can resultin condensate water dripping onto the floor.2. To ensure regular flow of condensate water, the drain pipeshould be pitched toward an open drain or sump at a down-ward slope of at least 1 ⁄4 -in. per foot. Refer to Fig. 12.IMPORTANT: Be sure the drain piping has no slackwhich might form a trap. Do not insert a trap in thedrain line; the drain is internally trapped.3. Insulate condensate drain line(s). Insulate the condensatedrain lines that are located in or above an occupied areawith a condensate proof material such as polyurethane orneoprene.Table 5 — Required Piston Sizes for AccuRater Metering DeviceOUTDOORUNIT 38INDOORUNIT 40QNINDOORPISTONINDOORPISTON TYPEOUTDOORPISTONOUTDOORPISTON TYPEREQUIRED SYSTEMCHARGE (lb)*HDC, HDL018 B018 49 B N/A N/A 4.6HDC024 B024 57 B N/A N/A 5.3BK018 H018 51 B 47 B 5.0BK024 H024 59 B 52 B 5.1LEGENDN/A — Not ApplicableTXV — Thermostatic Expansion Valve*Charge amount determined based on 25 ft of line. Check charge forlonger lines using superheat method. See 38HDC, HDL and BK in-stallation, start-up, and service instructions for system chargingprocedures.NOTE: The 38HDS systems do not use the AccuRater device. The38HDS systems have a TXV in the condensing unit for refrigerantmetering and control.NOTE: Arrow on AccuRaterT body points infree flow direction awayfrom the coil.Fig. 9 — AccuRater Metering Device in LiquidLine (Bypass Type Components); CoolingFig. 10 — AccuRater Metering Device at ServiceValve (Bypass Type Components); HeatingFig. 11 — Drain Connection (Right Side Shown WhenFacing Fan Coil Unit)11 |
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