Zurn-Wilkins 1250XL-A Installation Guide
Contents
1. Model 1250XL Water Hammer Arrester sizes A thru F This product contains a weighted average lead content less than 0 25 for wetted surfaces Installation U Maintenance Instructions INSTALLATION 1 Flush lines thoroughly prior to installation of Model 1250XL 2 Determine size of Water Hammer Arrester based on fixture units then refer to charts for proper devices 3 The Model 1250XL should be located as close to the source of shock as possible one each on the hot and cold water lines Use only Teflon tape to seal pipe threads 4 To insure proper performance the Model 1250XL should be installed so that there is an unobstructed path to the arrester 5 Threading the Model 1250XL into the determined location should be done with an appropriate sized wrench on the hex only The fixture unit values shown in Table II represent the standard ratings used by engineers to size water distribution systems and are also used to size water hammer arresters Match total fixture units to correct model of water hammer arresters required from Table I All sizing data in this brochure are based on flow velocities of 10 F P S or less The sizing method was designed with a maximum velocity of 10 F P S to offer assurance that the Water Hammer Arrester is capable of handling shock of maximum intensity that may be encountered EXAMPLE Fig 1 Fig 1 C W 26 Fixture Units B Needs 1250XL B H W 6 Fixture Units Needs 12502. XL A aT LONG RUNS OF PIPING TO REMOTE EQUIPMENT When long runs of piping are employed to serve a remote item of equip ment the Water Hammer Arrester should be located as close as possible to the point of quick closure see Fig 4 The size and quantity of Water Hammer Arrester to be installed in branch lines is shown in Table III Ideally the flow pressure in branch lines serving fixtures should never exceed 55 PSIG Pressure reducing valves should be installed to maintain proper pressure When however flow pressures of 65 to 85 PSIG are used the next larger size Water Hammer Arrester should be selected see Table III TABLE FOR FLOW PRESSURES UP 85 PSIG Nominal Pipe Diameter 1 2 11 2 2 a ee a fB a B B e a fB B fc c 0 E LENGTH OF PIPE 2 5 50 A CF 7s B cic iD n fe ae E F CF EF FF 100 c o o E e fE F cE ce EE er EFF 125 _ c D 0 E E CE AF DE EF FF EFF BEFF so o ee el F Jor or rr Fr Der rrr FEFE Flow Pressure up to 65 psig Flow Pressure over 65 psig and up to 85 psig LEAD FREE ZURN WILKINS SIZING AND SELECTION 1 Determine number of fixture units from Table Il 2 Determine shock arrester size from Table I 3 Finally match arrester to size and length of pipe run from Table Ill TABLE MODEL 1250XL SIZES Pate fe of e fF WATER HAMMER ARRESTER LONG RUN OF PIPING QUICK CLOSURE VALVE Wy
3. contains chemicals known to the State of California to cause cancer or birth defects or other reproductive harm ZURN WILKINS IS1250XL REV 7 13 ZURN WILKINS 1747 Commerce Way Paso Robles CA 93446 Phone 855 663 9876 Fax 805 238 5766 www zurn com
4. is SHOCK OUTLET TABLE Il FIXTURE UNITS SIZING INFORMATION TYPES OF SUPPLY FIXTURE UNITS FIXTURE CONTROL Flush Valve 10 10 na 6 6 Na Flush Tank Flush Valve _ 10 Flush Valve 5 Flush Tank Faucet Mixing Valve 4 lush Valve Closet N A efet ush Tank Coset NA NA NA 6 6 3 MULTI FIXTURE BRANCH LINES Rule 1 Branch lines of 20 feet or less Water Hammer Arrester should be placed at the end of the branch line between the last two fixtures served see fig 2 Select required model using fixture unit sizing Rule 2 Branch lines exceeding 20 feet An additional Water Hammer Arrester should be placed as shown see fig 3 Select required models using fixture unit sizing The sum of the fixture unit ratings of units X and Y shall be equal to or greater than the demand of the branches Fig 2 RISER Fig 3 WATER HAMMER ARRESTER OVER 20 TYPICAL BRANCH LINE ah i a i a i ate UP TO 20 WARRANTY ZURN WILKINS Valves are guaranteed against defects of material or workmanship when used for the services recommended If in any recommended service a defect develops due to material or workmanship and the device is returned freight prepaid to ZURN WILKINS within 12 months from date of purchase it will be repaired or replaced free of charge ZURN WILKINS liability shall be limited to our agreement to repair or replace the valve only Proposition 65 Warning This product
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