Carrier AIRSTREAM 42BHE Installation, Start-up And Service Instructions Manual

Also see for AIRSTREAM 42BHE: Product data

Contents

4Step 6 — Make Piping Connections (SeeTable 1 and Fig. 2 and 3)DRAIN — The unit has a double-sloped condensate drain panto ensure proper drainage. The condensate drain must be atleast 3/4-in. copper, galvanized, black iron, or PVC piping. In-stall the trapped drain line in accordance with all applicablecodes. Slope drain away from unit to prevent overflowing andinsulate the line to prevent sweating.Drain piping should be sloped a minimum of 1/8-in. per ftaway from the unit. Condensate drain must be trapped forproper drainage and odor control. The differential height of thetrap inlet to outlet must be at least 1-in. wg greater than the totalstatic pressure of the unit. The differential height of the outlet tothe bottom of the trap must not be less than the total static pres-sure of the unit.The 42BVE units should be installed on a pad. The heightof the pad should be adequate to allow for a proper condensatetrap. The condensate trap shown in Fig. 4 is for a unit with atotal static pressure (TSP) of 2-in. wg with a 1-in. wg safetyfactor for any change in operating conditions. The A dimensionmust equal the system TSP plus 1-in. wg. The B dimension isone half of A, and C is the total of A + B + pipe diameter.The unit drain pan is equipped with a secondary connectionthat must be piped to an open-site drain. This will prevent over-flow and possible building damage if the primary drain isblocked. The secondary drain connection can be capped if po-tential overflow will not damage the building or unit.WATER SUPPLY/RETURN CONNECTIONS — Install pip-ing in accordance with all applicable codes. The supply andreturn connections are marked on the coil stub ends with an “S”on the supply (inlet) and an “R” on the return (outlet). Blueletters mark chilled water connections, red letters indicatesteam or hot water connections. Install valves in lines inaccordance with valve manufacturer’s instructions. Be surevalves are in proper operating position and are easily accessiblefor adjustment.HYDROSTATIC TEST — When all joints are completed,perform hydrostatic test for leaks. Hydronic systems should betested with water (some components are not designed to holdgas). If gas testing is necessary, pressure must NOT exceed80 psig. All chilled water piping and valves not located overdrain pans or drip lips must be insulated to prevent damagefrom sweating. Vent all coils during final preparations. (SeeStep 10, section 6.)Check interior unit piping for signs of leakage from ship-ping damage or mishandling. If leaks are found, notify your lo-cal Carrier representative before initiating any repairs.INSULATION — Following the hydrostatic test, insulate allpiping to unit to prevent sweating.Table 1 — Unit Physical DataWARNINGNever pressurize unit beyond the specified test pressure.Always pressure test with an inert gas or fluid (nitrogen orclear water) to avoid possible unit damage or personalinjury in the event of a leak during testing.CAUTIONAll water coils must be protected from freezing after initialfilling with water. Even if system is drained, unit coils maystill hold enough water to cause damage when exposed totemperatures below freezing.UNIT SIZE 42BHE, BVE 06 08 10 12 16 20 30 40NOMINAL CFM 600 800 1000 1200 1600 2000 3000 400042BHE OPERATING WT (lb)(no heat/ with heat) 203/234 205/236 253/287 256/290 312/346 344/380 437/474 553/59042BVE OPERATING WT (lb)(no heat/ with heat) 200/231 202/233 243/277 247/281 289/323 351/387 436/473 522/559FILTERS (2 in. pleated)Number...Size (in.) 1...161 / 2 x 24 1...161 / 2 x 24 1...18 1/ 4 x 33 1...18 1 /4 x 33 2...18 1/ 4 x 211/ 2 2...203 / 4 x 22 2...29 x 22 2...29 x 29Face Area (sq ft) 2.8 2.8 4.2 4.2 5.5 6.3 8.9 11.7HYDRONIC COILSSize (in.) 15 x 20 15 x 20 15 x 29 15 x 29 15 x 39 18 x 40 27 x 40 27 x 54Face Area (sq ft) 2.1 2.1 3.0 3.0 4.1 4.9 7.7 10.3Fins per inch 10Coil Water Volume (approx. gal.per row of coil) 0.240 0.240 0.324 0.324 0.420 0.492 0.768 1.020FANSQty...Size (in.) 1...9 x 4 1...9 x 6 1...10 x 4 1...10 x 7 1...11 x 10 1...12 x 9 1...12 x 12 1...15 x 12HYDRONIC COIL CONN. (in.)8 ROW (Cooling) 1 nominal, 1.125 OD 11/2 nominal, 1.625 OD4 AND 6 ROW (Cooling) 3/ 4 nominal, 0.875 OD 1 nominal, 1.125 OD 11/2 nominal, 1.625 OD1 ROW (Heating) 1/2 nominal, 0.625 OD 11/2 nominal, 1.625 OD2 ROW (Heating) 1/ 2 nominal, 0.625 OD 1 nominal, 1.125 OD 11/2 nominal, 1.625 ODDX COIL CONN. LIQUID LINE (in.) 1/4 nominal, 0.375 OD 1/ 2 nominal, 0.625 ODDX COIL CONN. SUCTION LINE (in.) 3/ 4 nominal, 0.875 OD 1 nominal, 1.125 OD 11/2 nominal, 1.625 ODDRAIN CONN. SIZES (in.) 3/4 MPT42BHE/BVEUNITCASING3.01.5CLEAN-OUTALLOW A MINIMUM OF“C” INCHES FROM BOTTOMOF UNIT TO FINISHED FLOOR(42BVE UNIT) OR TO FALSECEILING (42BHE UNIT).CBAFig. 4 — Condensate TrapNOTE: Dimension C is the total of A + B + the pipe diameter.