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Produttore : Bryant
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File Nome : 39451d7.pdf
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Read entire instruction before starting installation. Position unit and remove wooden shipping crate base as shown in Figure 1. 1. Saw wood stringers as shown. 2. Remove unit access panels and remove 3 ship-ing bolts from crate base. 3. Tilt one end of unit and remove half-section of crate base; then remove remaining section while tilting the other end. I. LOCATE AND MOUNT ABSORPTION UNIT The absorption unit may be located at ground level or on the roof. Consult local codes for information concerning proximity to property lines, height above roof, obstructions, etc. A. MOUNTING BASE 1. Use non-combustible materials. 2. Suggested types of mounting base for ground installation: a. Precast concrete lintels. Use two lintels across complete width of unit, one located under front and one under rear, or three lintels the depth of unit, one each under right and left end of unit and one at center of unit. b. Concrete blocks. Use one block at each corner of unit plus a fifth block under the front midway between the front corner blocks. c. Concrete slab. Minimum thickness 4 inches. 3. On roof installations, leave sufficient clearance between unit base and roof for proper air circulation. Use precast concrete lintels or concrete blocks as described in Paragraph 2 above or steel beams. B. CLEARANCES See Figures 2 and 3 for typical locations. 1. Absorption unit should have a minimum clearance of 2 feet on all sides from any adjacent obstruction. 2. Avoid locating the unit where hot condenser discharge air can impinge on nearby obstructions and mix with the inlet air supply. The condenser air discharges upward at a small angle toward the front of the unit. With the condenser facing the wall the unit can be located at, or outside of the plumb line from any over-hang. ELECTRICAL CONNECTIONS (ALTERNATE) -— j DlA.- 2 KNOCKOUTS (IN BACK) _ oi. H6 ELECTRICAL CONNECTIONS 7", DIA.-2 KNOCKOUTS WATER OUTLET 1" FPT 1 WATER INLET 1" FPT G- GAS CONNECTION Model A B c D E F G H 36-451 46 31 52 9-1/16 23-9/64 26-1/8 17-5/16 3-7/64 54-451 55 38 59 11-1/16 28-3/4 32-7/16 23 3-39/64 36-451 54-451 Cooling Capacity Btuh 35,000 54,000 Heat Input Btuh 110,000 165,000 Condenser Air Delivery Cfm 4,500 6,700 Water Flow (Min. Required) Gpm 7.5 11 Max. Frictional Loss Handled by Chiller Pump Ft Head 30 26 Max. Elevation of Coil above Chiller Ft 30 30 Pump and Fan Drive 115V, 60 Cy., 1 Phase HP 1/3 1/2 Minimum Wire Size * AW G 14 * 12 * Refrigerant Type 717 717 Refrigerant Amount Lb 18 31 Approximate Shipping Wt. Lb 780 1,095 *Satisfactory where distance, measured a-long wire path, between unit and connection into main panel does not exceed 100 ft. Where distances are longer, wire sizes should be increased accordingly. 39451D7 TABLE I Nominal Pipe Size Inches Allowable Distance* between Coil and Chiller Polyethylene Pipe Copper Pipe Galvanized Pipe Size 36 Size 54 Size 36 Size 54 Size 36 Size 54 3/4 65' - - 55' - - 50' - - 1 240' 85' 210’ 65' 180' 70' 1-1/4 880* 295' 565' 190' 720' 240’ * Note: Values shown in above table are for one direction only. The total length of pipe from chiller to coil and return would be double the above table values. The above table applies to single unit installations only. Figure 1 II. CONNECT CHILLED WATER LINES A. MATERIALS Refer to section on “Cold Weather Protection" at the end of this instruction. 1. Piping a. Polyethylene Plastic Pipe - use medium density flexible pipe whose wall thickness approximates Schedule 40 pipe (Commercial Standard CS 197-60). Pipe must be virgin plastic. Do not use pipe manufactured from re-claimed plastic. □ AVOID OPEN WINDOWS SLEEPING QUARTERS AVOID ELLS" GARAGE LIVING AREA □ GOOD LOCATION Figure 3 b. Copper - satisfactory substitute. c. Galvanized - satisfactory substitute. 2. Fittings a. Galvanized - use when possible. b. Brass - satisfactory substitute. c. Nylon - satisfactory substitute. B. PIPE LENGTH AND DIAMETER Table I shows maximum length of pipe of different diameters that can be used between the pump discharge and the coil inlet and still maintain minimum allowable (design) water flow rate. 1. Multiply table values by two to obtain the total length of pipe from chiller to coil and return. 2. Length is measured along the pipe path and therefore includes vertical distance between the water coil and the chiller. 3. Lengths shown in Table I are based on using a total of eight elbows in the entire water line (chiller to coil and return). Lengths are predicated on the use of a Bryant matching water coil. For greater distances use larger pipe or add a pump.. 39451D7 C. INSULATION 1. Insulate supply and return lines separately. 2. Material should be of good quality and be covered with a good vapor barrier. Armaflex or equivalent is recommended. Wall thickness: 1/2" wall thickness - south of 40° N. latitude 3/8" wall thickness - north of 40° N. latitude D. HEIGHT OF COIL ABOVE ...