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Bradford-White Corp 500-1825 manual

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Table of contents for the manual

  • Page 1

    Internet Version for Reference Only FOR YOUR SAFETY : This product must be installed and serviced by a professional service technician, qualied in hot water heater installation and maintenance. Improper installation and/or operation could create carbon monoxide gas in ue gases which could cause serious injury , property damage, or death. Impr[...]

  • Page 2

    Internet Version for Reference Only BRADFORD WHITE Page 2 B4 V olume Water Heater Page 3 T ABLE OF CONTENTS SECTION 1. General Information 1.1 Introduction .................................................... 3 1.2 Heater Identication....................................... 3 1.3 Flow Requirements........................................ 3 1.4 W a[...]

  • Page 3

    Internet Version for Reference Only BRADFORD WHITE Page 2 B4 V olume Water Heater Page 3 SECTION 1. General Information 1.1 Introduction This manual provides information for the installation and operation of Bradford White volume water heaters. It is strongly recommended that all application and installation procedures be reviewed completely before[...]

  • Page 4

    Internet Version for Reference Only BRADFORD WHITE Page 4 B4 V olume Water Heater Page 5 1.4 W ater Chemistry Bradford White equipment is designed for use in a wide variety of water conditions. The water velocity maintained in the heat exchanger tubes is kept high enough to prevent scaling from hard water and low enough to avoid corrosion from soft[...]

  • Page 5

    Internet Version for Reference Only BRADFORD WHITE Page 4 B4 V olume Water Heater Page 5 Figure 2. T ypical Heater Installation with Base for Com- bustible Floors, Example A. Concrete Slab Must Extend Out A Base For Combustible Floors Concrete Slab - 4 " Minimum Minimum Of 12" On All Sides Roof - W ood & S teel Construction Unit (End [...]

  • Page 6

    Internet Version for Reference Only BRADFORD WHITE Page 6 B4 V olume Water Heater Page 7 ducts, each opening shall have a minimum free area of 1 square inch per 4000 Btu/hr (5.5 square cm/kW) of total input rating of all equipment in the enclosure. When communicating to the outdoors through horizontal ducts, each opening shall have a minimum free a[...]

  • Page 7

    Internet Version for Reference Only BRADFORD WHITE Page 6 B4 V olume Water Heater Page 7 3. A void using long horizontal runs of the vent pipe, and too many 90° elbows, reductions or restrictions. Horizontal runs should have at least a 1/4" rise per foot in the direction of ow . A vent connector should be supported for the design and weigh[...]

  • Page 8

    Internet Version for Reference Only BRADFORD WHITE Page 8 B4 V olume Water Heater Page 9 2. Use the gures in T able 3 to provide adequate gas piping from the gas meter to the heater . 3. A trap (drip leg) must be provided ahead of the gas controls (see Figure 8 ). A manual gas shutoff valve must also be provided for service convenience and safet[...]

  • Page 9

    Internet Version for Reference Only BRADFORD WHITE Page 8 B4 V olume Water Heater Page 9 Figure 9), must be piped, but not fastened, to a drain or oor sink. The drain pipe must be the same size as the valve outlet and must pitch downward from the valve. Special attention must be given to relief valve settings in installations where the heater is[...]

  • Page 10

    Internet Version for Reference Only BRADFORD WHITE Page 10 B4 V olume Water Heater Page 1 1 If the heater-to-tank circulating loop contains more than 6 elbows or 30 feet of pipe , use pipe or ttings in the loop no smaller than the following: Model Pipe Size 500 through 850 2-1/2" 1010 through 1825 3" Pump performance requirements are p[...]

  • Page 11

    Internet Version for Reference Only BRADFORD WHITE Page 10 B4 V olume Water Heater Page 1 1 5 1 2 3 4 CWMU SUPPL Y RECIRC . 5 1 2 3 4 RECIRC. CWMU SUPPL Y Figure 1 1. Hot W ater Supply System With V ertical T ank With Horizontal T ank 2.1 1 T wo-T emperature System See Figures 13 and 14 for piping schematics. This system is designed to maintain the[...]

  • Page 12

    Internet Version for Reference Only BRADFORD WHITE Page 12 B4 V olume Water Heater Page 13 5 3 2 1 2 4 CWMU SUPPL Y CIRC. RETURN Figure 12. Hot W ater Supply System with Dual T anks, Building Loop Return and Circulating Pump. Figure 13. T wo-T emperature Hot Water Supply System with V ertical T ank. D B K J C C H C H J 180°F W ater T o Bldg. Conve[...]

  • Page 13

    Internet Version for Reference Only BRADFORD WHITE Page 12 B4 V olume Water Heater Page 13 Figure 14. T wo-T emperature Hot Water Supply System. Cold W ater 180° W ater T o Bldg. Conventional T ank T o Drain 24" Min. T o Drain Pump 140° W ater T o Bldg. 140° W ater Return From Bldg. 180° W ater Return From Bldg. H H C C B D K K E J Cold W [...]

  • Page 14

    Internet Version for Reference Only BRADFORD WHITE Page 14 B4 V olume Water Heater Page 15 SECTION 3. Operation 3.1 Controls - General See Figure 15 for control locations. 3.1.1 Electronic Ignition Controls: a. Intermittent Ignition: Pilots are automatically lit when the operating aquastat calls for heat (System #9). The unit performs its own safet[...]

  • Page 15

    Internet Version for Reference Only BRADFORD WHITE Page 14 B4 V olume Water Heater Page 15 2. Make sure the heater ’ s power switch is in the “ON” position. After placing the manual pilot gas valve in the open position and resetting all safety devices, (high limit, pressure switch, low- water cutoff, etc.) pilot(s) can be lit following the pr[...]

  • Page 16

    Internet Version for Reference Only BRADFORD WHITE Page 16 B4 V olume Water Heater Page 17 When a tank aquastat is not used: The pump on the heater must run continuously , so the heater's temperature control will sense the tank's water temperature. Set the heater temperature control to the desired tank temperature. Set the manual reset hi[...]

  • Page 17

    Internet Version for Reference Only BRADFORD WHITE Page 16 B4 V olume Water Heater Page 17 Caution Black carbon or green soot on a dirty heat exchanger can, under certain conditions, be ignited by a random spark or open ame. T o prevent this unlikely occurrence, dampen the soot deposits with wet brush or ne water spray before servicing or cle[...]

  • Page 18

    Internet Version for Reference Only BRADFORD WHITE Page 18 B4 V olume Water Heater Page 19 II. HEA TER IS POUNDING, KNOCKING OR EMIT - TING STEAM FROM RELIEF V AL VES. Possible Cause What T o Do A. Low or no water ow . A. This condition is usually caused by lack of adequate water ow through heater . Check the following: 1. Is the heater wired[...]

  • Page 19

    Internet Version for Reference Only BRADFORD WHITE Page 18 B4 V olume Water Heater Page 19 This page intentionally left blank.[...]

  • Page 20

    Internet Version for Reference Only BRADFORD WHITE Page 20 C O R P O R A T I O N B W R A D FO R D H ITE ® H2317100- Ambler , P A 19002 T ech. Service (800) 334-3393 Service Parts (800) 538-2020 W arranty Service (800) 531-211 1 ® www .Bradford White.com Litho in U.S.A. © Bradford White 0602 Document 2144[...]