Bradford White SW-2-40R-L Installation And Operating Manual
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Bradford White SW-2-40R-L Installation And Operating Manual

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A Spanish language version of these instructions is available by contacting
the manufacturer listed on the rating plate.
La version espanola de estas instruccions se puede obtener al escribirle a
la fábrica cuyo nombre aparece in la placa de especificaciones.
INSTALLATION/OPERATING MANUAL
WITH PARTS LISTING AND TROUBLESHOOTING GUIDE
For your family's comfort, safety, and convenience, we
recommend this water heater be installed and serviced by a
plumbing professional.
INDIRECT-FIRED
WATER HEATER
WARNING
To avoid damage or injury, there
must be no materials stored
against the indirect water heater
and proper care shall be taken
to avoid unnecessary contact
(especially by children) with the
indirect water heater.
• DO NOT store or use
gasoline or other flammable
liquids in the vicinity of this
water heater or any other
appliance.
238-43480-00L REV 8/20

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  • Page 1 INDIRECT-FIRED WATER HEATER A Spanish language version of these instructions is available by contacting the manufacturer listed on the rating plate. La version espanola de estas instruccions se puede obtener al escribirle a la fábrica cuyo nombre aparece in la placa de especificaciones. INSTALLATION/OPERATING MANUAL WITH PARTS LISTING AND TROUBLESHOOTING GUIDE WARNING...

  • Page 2: Table Of Contents

    CONGRATULATIONS! You have purchased one of the finest water heaters on the market today! This installation, operation, and instruction manual will explain in detail the installation and maintenance of your new indirect water heater. We strongly recommend that you contact a plumbing professional for the installation of this water heater.

  • Page 3: Important Information

    CAUTION The maximum boiler water supply temperature to the indirect heat exchanger must NOT exceed 240°F (115°C). NOTICE Insulation blankets are not required for this water heater. This water heater meets or exceeds the ASHRAE/IES 90.1b standards with respect to insulation and standby loss requirements. SECTION I IMPORTANT INFORMATION -READ CAREFULLY-...
  • Page 4 Important Information continued- DANGER DO NOT store or use gasoline or other flammable, combustible, or corrosive vapors and/or liquids in the vicinity of this or any other appliance. IF YOU SMELL GAS: • DO NOT try to light any appliance. •...
  • Page 5 Important Information continued- WARNING Installation is not complete unless a pressure and temperature relief valve is installed into the side of the water heater. See the Water Connections section of this manual for details. This water heater contains very hot water under high pressure. Do NOT unscrew any pipe fittings or attempt to disconnect any components of this water heater without positively assuring the water is cool and has no pressure.
  • Page 6 Important Information continued- WARNING It is the responsibility of the installing contractor to see that all controls are correctly installed and are operating properly when the installation is complete. DO NOT operate the water heater with jumpered or absent controls or safety devices.

  • Page 7: Ii- Specifications

    SECTION II SPECIFICATIONS Figure 1 – Tank Layout Table 1: Water Heater Dimension (Inches) Model 30-Gal. / Res. 33-5/8 28-1/4 34-3/8 5-3/8 27-1/2 40-Gal. “R” / Res. 41-1/8 34-3/8 41-7/8 5-3/8 27-1/2 50-Gal. “R” / Res. 46-1/4 40-1/8 5-3/8 27-1/2 65-Gal.
  • Page 8 Specifications continued- Table 2: Water Heater Capacities Tank Coil Volume Dry Weight Wet Weight Model Capacity (Gal) (Lbs) (Lbs) (Gal) 30-Gal. / Res. 40-Gal. “R” / Res. 50-Gal. “R” / Res. 65-Gal. / Res. 65-Gal. / Com. 80-Gal. / Res. 80-Gal.
  • Page 9 Specifications continued- Table 4: Water Heater Performance Maximum First Continuous Approximate Hour Rating Draw Rating Boiler Output Model (Gal/Hr) @ (Gal/Min) @ Needed For Ratings (BTU/hr) 140°F 115°F 140°F 115°F 30-Gal. / Res. 180,000 40-Gal. “R” / Res. 180,000 50-Gal. “R” / Res. 180,000 65-Gal.

  • Page 10: Iii- General Information

    Specifications continued- NOTICE If the boiler takes longer to heat up from a cold start than the water availability as noted above, hot water shortage may occur. Hot water availability is based off drawing 80% of the heated tank volume at 4 gallons per minute flow rate. The maximum heat transfer through the coil (heat input) of the water heater at 240°F boiler water supply temperature and 210°F potable water temperature is 94,100 Btu/hr for residential models...
  • Page 11 ADJUSTABLE AQUASTAT – The thermostat can read from 40°F to 180°F. The temperature may be adjusted from 80°F to 160°F with installed factory stops. The aquastat (thermostat) was adjusted to 120°F before the heater was shipped from the factory. It is recommended that lower temperatures be used to avoid the risk of scalding.

  • Page 12: Iv- Pre-Installation

    General Information continued- WARNING Install a discharge line so that water discharged from the temperature and pressure relief valve will exit within six (6) inches above, or any distance below, the structural floor and cannot contact any live electrical part. The discharge line is to be installed to allow for complete drainage of both the temperature and pressure relief valve and the discharge line.
  • Page 13 Pre-installation continued- IMPORTANT DECISIONS REQUIRED BEFORE INSTALLATION SIZING 1. Boiler DOE Heating Capacity – The indirect-fired water heater will provide the rated performance only if used in conjunction with a heat source with a DOE heating capacity (Boiler Output) at least as much as the minimum noted in Table 3.
  • Page 14 Pre-installation continued- SYSTEM ZONE CONTROL The indirect-fired water heater must be installed as a zone separate from the space heating system. The domestic hot water zone’s piping and circulator must be sized for a minimum flow rate with all zones in use and a maximum flow rate with only the water heater in use.
  • Page 15 Pre-installation continued- COMPONENT LOCATION CAUTION This water heater must be located in an area where leakage of the tank, water line connections, or the temperature and pressure relief valve will not result in damage to the area adjacent to the water heater or to lower floors of the structure.
  • Page 16 Pre-installation continued- APPLIANCE LOCATION 1. Boiler Location – Locate the indirect-fired water heater as close to the boiler as practical. 2. Fixture Locations – For fastest delivery of hot water, place the indirect-fired water heater close to points of use. ADDITIONAL RECOMMENDED COMPONENTS 1.

  • Page 17: Water Connections

    SECTION V WATER CONNECTIONS WARNING FAILURE TO INSTALL AND MAINTAIN A NEW, LISTED TEMPERATURE AND PRESSURE RELIEF VALVE WILL RELEASE THE MANUFACTURER FROM ANY CLAIM WHICH MIGHT RESULT FROM EXCESSIVE TEMPERATURE AND PRESSURES. Hydrogen gas can be produced in an operating water heater that has not had water drawn from the tank for a long period of time.
  • Page 18 Water Connections continued- INSTRUCTIONS FOR POTABLE CONNECTIONS 1. BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE MAIN WATER SUPPLY VALVE. After shutting off the main water supply, open a faucet to relieve the water line pressure to prevent any water from leaking out of the pipes while making the water connections to the water heater.
  • Page 19 Water Connections continued- CONNECT WATER BOILER SUPPLY PIPING 1. For a space heating system that utilizes ZONE VALVES, refer to Figure 2. The indirect-fired water heater connection labeled “FROM BOILER SUPPLY” should be piped to the boiler supply piping. Mount the circulator making sure the flow arrow points toward the water heater.
  • Page 20 Water Connections continued- Figure 3 - Water Boiler Piping with Circulators CONNECT STEAM BOILER SUPPLY PIPING Figure 4 represents a typical steam boiler connection diagram. Refer to the boiler installation manual or contact the boiler manufacturer for an appropriate piping diagram. The use of a union, shut-off valves, and a drain valve is recommended for future service convenience.
  • Page 21 Water Connections continued- NOTICE Typical steam boiler without connections available below the water line is not recommended due to insufficient water temperature, especially during warmer months when the space heating system is not operational. Boiler water temperature at the bottom of a steam boiler can be 50°F lower than the boiler’s water temperature limit setting during such periods.

  • Page 22: Vi- Electrical Connections

    SECTION VI ELECTRICAL CONNECTIONS Install electric wiring in accordance with National Electric Code or the Canadian Electrical Code and local regulations. See the boiler’s installation manual for wiring diagrams. DANGER Positively assure all electrical connections are unpowered before attempting installation or service of electrical components or connections of the water heater or building.

  • Page 23: Vii- Operating Instructions

    Electrical Connections continued- Figure 5 - Aquastat Control SECTION VII OPERATING INSTRUCTIONS WARNING Water heaters are heat-producing appliances. To avoid damage or injury there must be no materials stored against the water heater, and proper care must be taken to avoid unnecessary contact (especially by children) with the water heater.
  • Page 24 Electrical Connections continued- SEQUENCE OF OPERATIONS 1. Aquastat senses stored water temperature drops below desired setting. Domestic hot water priority only: Normally closed contacts open to interrupt space heating. 2. Aquastat satisfied. Aquastat contacts open, turning off domestic hot water circulator and de-energizing relay.
  • Page 25 Electrical Connections continued- Table 8 details the approximate relationship of water temperature and time with regard to scald injury and may be used as a guide in determining the safest water temperature for your applications. APPROXIMATE TIME/TEMPERATURE RELATIONSHIPS IN SCALDS 120°F More than 5 minutes 125°F...

  • Page 26: Viii- Maintenance

    Electrical Connections continued- 3. After the water heater completes a heat-up cycle, check the water temperature at a faucet. Allow enough water to flow to ensure that the water temperature reflects the tank temperature. Adjust the water heater’s temperature setting as necessary. a.
  • Page 27 Maintenance continued- CAUTION Before manually operating the valve, make sure that a drain line has been attached to the valve to direct the discharge to an open drain. Failure to take this precaution could mean contact with extremely hot water discharging from the valve during this checking operation.
  • Page 28 Maintenance continued- To inspect or replace an anode: The anodes on this water heater are easily accessible from the top of the heater making replacement simple and quick. a. Turn the water heater electricity OFF for the zone containing the indirect-fired heater. Flow water until the discharge is cool or allow enough time for the potable water to cool naturally.

  • Page 29: Ix- Troubleshooting Guide

    SECTION IX TROUBLESHOOTING GUIDE PROBLEM CAUSE SOLUTION Refer to boiler installation instructions. Boiler does not Check main service operate switch. Check fused disconnect. Check power supply. Circulator does not operate Replace as necessary. Improper Turn tank aquastat to aquastat setting appropriate setting.
  • Page 30 Troubleshooting Guide continued- PROBLEM CAUSE SOLUTION Lower aquastat Aquastat set too setting. See Section high VII. Compare plumbing to Water at Improper system Section V: Water faucet too hot plumbing Connections. Compare wiring to Improper system Section VI: Electrical wiring Connections.

  • Page 31: Parts List

    SECTION X PARTS LIST PART NAME & DESCRIPTION 1. Aquastat Control 7. Drain Valve 2. Aquastat Well 8. Jacket Head Pan 3. Anode 9. Hole Closure 4. Diptube 10. Heat Exchanger Escutcheon 5. Outlet Nipple 11. Drain Escutcheon 6. T&P Relief Valve 12.

  • Page 32: Notes

    Contact your supplier or plumbing professional for replacement parts or contact the company at the address given on the rating plate of the water heater. Provide the part name, model, and serial numbers of the water heater when ordering parts. READ THE WARRANTY FOR A FULL EXPLANATION OF THE LENGTH OF TIME THAT PARTS AND THE WATER HEATER ARE WARRANTED.

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