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INDIRECT-FIRED - Bradford White

1. Hot Water Coil Heat Pressure Drop at Availability Transfer Area Rated Heat source Minutes Sq Ft Plow Rae MODEL Feet of Head 30 Gal Res 5 5 14 2 1 5 40 Gal R Res 7 5 14 2 1 5 50 Gal R Res 9 0 14 2 1 5 65 Gal Res 11 0 14 2 1 5 65 Gal Com 10 5 27 2 5 0 80 Gal Res 13 5 14 2 1 5 80 Gal Com 13 2 27 2 5 0 120 Gal Res 20 8 14 2 1 5 120 Gal Com 20 6 27 2 5 0 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 and 180 300 Btu hr for commercial models Potable water temperature is limited to below 210 F and nominal water containing capacity is below 120 gallons for all indirect fired models Accordingly per Part HLW 101 2 Section IV of the ASME Boiler and Pressure Vessel Code all indirect fired products listed are exempted from compliance with the code SECTION HI GENERAL INFORMATION FEATURES This water heater contains the following features HEAT EXCHANGER The heat exchanger coil has 1 NPT female fittings These water heate
2. j i 3 4 NPT TO BOILER RETURN 1 NPT DRAIN COUPLING 3 4 NPT DRAIN VALVE 5 8 NH Figure 1 Tank Layout Table 1 Water Heater Dimension Inches MODEL A B C D E F 30 Gal Res 22 33 5 8 28 1 4 34 3 8 5 3 8 27 1 2 40 Gal R Res 2 41 1 8 34 3 8 41 7 8 5 3 8 27 1 2 50 Gal R Res 2 46 1 4 40 1 8 47 5 3 8 2 65 Gal Res 22 59 14 8 60 5 3 8 2 65 Gal Com 22 59 1 4 8 00 5 3 8 4 80 Gal Res 24 59 52 7 8 59 3 4 5 3 8 2 80 Gal Com 24 59 52 7 8 59 3 4 5 3 8 47 3 4 120 Gal Res 28 1 4 62 1 2 55 3 4 63 1 4 6 3 8 28 1 2 120 Gal Com 28 1 4 62 1 2 55 3 4 63 1 4 6 3 8 4 Specifications continued Table 2 Water Heater Capacities Tank Coil Dry Weight Wet Weight Capacity Volume Lbs Lbs MODEL Gal Gal 30 Gal Res 30 2 7 140 404 40 Gal R Res 38 2 7 172 486 50 Gal R Res 48 2 7 180 576 65 Gal Res 60 2 7 196 704 65 Gal Com 58 5 0 265 768 80 Gal Res 75 2 7 224 861 80 Gal Com 73 5 0 293 920 120 Gal Res 116 2 7 355 1324 120 Gal Com 114 5 0 415 1370 Table 3 AHRI Certified Water Heater Ratings First Hour Continuous peat Loss Output Rate of Heat Source ating Draw Rating Rating Ithe Heat Source Flow Rat Gal Hr Gal Hr a
3. d Wait for water flow from the hose to stop Remove the anode using a socket of the appropriate size Do not use an impact wrench e Inspect and replace the anode as required Use pipe tape or sealant when reinstalling the anode f Close the drain valve Open a hot water fixture to allow air to escape Open the cold water supply to the heater and allow the tank to fill g Check your anode and drain valve for leaks h Turn the water heater electricity on for the zone containing the indirect fired heater Sediment Annual but harsh water quality may dictate more frequent service Depending on water conditions a varying amount of sediment may collect in the tank Levels requiring service are indicated by a small temperature difference in the supply and return lines See also Scale below Repeated flushing usually clears such material As a preventive measure water should be drawn from the tank at the drain valve until it runs clear Scale Annual Hard water may cause scale to build up on the outside of the heat exchanger coil A water softener will prevent this problem See also Sediment above Symptoms would be reduced recovery capacity or reduced temperature differential between boiler supply and return lines Repeated flushing should resolve the problem 31 SECTION IX TROUBLE SHOOTING GUIDE PROBLEM CAUSE SOLUTION No hot water at faucet Boiler does not operate Refer to boiler
4. Insert the aquastat capillary bulb to the well bottom as shown and screw the aquastat clamp securely in the well groove The aquastat acts as a thermostat for zone control and should be wired accordingly Refer to the boiler or zone control manufacturer s instructions if any additional wiring is required The control is factory set at 120 F and care should be made to not rotate this dial while wiring the control Once electrical connections are complete secure the aquastat cover back in place AT NO TIME SHOULD WATER HEATER OPERATION TAKE PLACE WITHOUT THE COVER ON THE CONTROL 25 Electrical Connections continued TEMPERATURE DIAL BACK OF AQUASTAT A WIRE TERMINALS 6 z es D INSERT BULB AS SHOWN CLAMP SCREWS CROSS SECTIONAL VIEW Figure 5 Aquastat Control SECTION VII OPERATING INSTRUCTIONS N 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 UNDER NO CIRCUMSTANCES SHALL FLAMMABLE MATERIALS SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THE WATER HEATER OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER Installation or service of this water heater requires ability equivalent to that of a licensed tradesman
5. discharge temperature in branch supply lines Such valves are available from the manufacturer of this water heater or a local plumbing supplier Please consult with a plumbing professional 27 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 oe a TIME TEMPERATURE Con RELATIONSHIPS IN SCALDS we IR 120 F More than 5 minutes 4 EN 125 F 1 to 2 minutes 12E oO E EEO o About 10 seconds a ROA 140 F Less than 5 seconds si oa 145 F Less than 3 seconds cc EA e 150 F About 1 seconds 155 F About 1 second igure b scac aro Table 8 Scald Relationships 2 For the most energy efficient operation adjust the aquastat for the minimum water temperature necessary to meet domestic hot water needs Refer to Figure 7 Use a small flat screwdriver to rotate the temperature dial through the hole directly below the temperature indication window The temperature setting is aligned with the notch in this window IT IS NOT NECESSARY TO REMOVE THE COVER TO ADJUST THE TEMPERATURE SETTING THE AQUASTAT COVER SHOULD NEVER BE REMOVED WITHOUT ELECTRICITY BEING FIRST DISCONNECTED TEMPERATURE INDICATION WINDOW Figure 7 Aquastat Control 28 Electrical Connections continued 3 A
6. ea ie baa ai MODEL F Hr BTU Hr Gal Min 30 Gal Res 255 235 1 2 157 000 13 7 40 Gal R Res 260 235 1 1 157 000 13 7 50 Gal R Res 265 235 0 9 157 000 13 7 65 Gal Res 275 235 0 8 157 000 13 7 65 Gal Com 405 370 0 8 245 000 14 0 80 Gal Res 295 235 0 6 157 000 13 7 80 Gal Com 415 370 0 6 245 000 14 0 120 Gal Res 315 235 0 4 157 000 13 7 120 Gal Com 445 370 0 4 245 000 14 0 NOTES These ratings were obtained with a heat source output rate and flow rate as specified in Table 3 and a 180 F boiler water supply temperature Other results will be obtained under different conditions Specifications continued Table 4 Water Heater Performance Maximum First Continuous Approximate Boiler Output Hour Rating Draw Rating Needed F Gal Hr Gal Min eee Ratings MODEL 140 F 115 F 140 F 115 F BTU hr 30 Gal Res 279 429 4 2 6 7 220 000 40 Gal R Res 288 438 4 2 6 7 220 000 50 Gal R Res 297 447 4 2 6 7 220 000 65 Gal Res 306 456 4 2 6 7 220 000 65 Gal Com 534 820 8 0 12 8 420 000 80 Gal Res 321 470 4 2 6 7 220 000 80 Gal Com 546 834 8 0 12 8 420 000 120 Gal Res 357 507 4 2 6 7 220 000 120 Gal Com 583 871 8 0 12 8 420 000 NOTES Based on 200 F boiler water temperature and 50 F potable water inlet temperature Table 5 Water Heater Performance
7. from whom your water heater was purchased For your records we recommend that you write the model serial number and installation date of your water heater in the back of this manual This manual should be kept with the water heater We re committed to providing you with the finest water heater made N 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 TABLE OF CONTENTS SECTION I IMPORTANT INFORMATION READ CAREFULLY The equipment must be installed in accordance with those installation regulations required in the area where the installation is to be made These regulations must be carefully followed in all cases Authorities having jurisdiction shall be consulted before installations are made All wiring on water heaters installed in the USA must be in accordance with the National Electrical Code and or local regulations or in Canada installed in accordance with the Canadian Electrical Code and or local regulations The following terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning product life A DANGER Indicates an imminently hazardous situation which if
8. not avoided will result in death serious injury or substantial property damage A WARNING Indicates a potentially hazardous situation which if not avoided could result in death serious injury or substantial property damage CAUTION Indicates a potentially hazardous situation which if not avoided may result in moderate or minor injury or property damage NOTICE Indicates special instructions on installation operation or maintenance which are important but not related to personal injury hazards Important Information continued AN 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 DO NOT touch any electric switch do not use any telephone in your building Immediately call your gas supplier from a telephone in another building Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department DO NOT OPERATE THE APPLIANCE UNTIL THE LEAKAGE IS CORRECTED Liquefied petroleum gas propane gas is heavier than air and will remain at floor level if there is a leak Basements crawl spaces closets and areas below ground level will serve as pockets for accumulation of leaking gas This water heater is supplied with an adjustable thermostat to control water temperature Hot water temperatures required
9. the hot water system If hydrogen is present there will be an unusual sound such as air escaping through the pipes as hot water begins to flow Do not smoke or have open flame near the faucet at the time it is open Keep clear of the temperature and pressure relief valve discharge line outlet The discharge may be hot enough to cause scald injury The water is under pressure and may splash CAUTION If sweat fittings are to be used DO NOT apply heat to the nipples on top of the water heater Sweat the tubing to the adapter before fitting the adapter to the water connections It is imperative that heat is not applied to the nipples containing a plastic liner 20 Water Connections continued INSTALL TEMPERATURE AND PRESSURE RELIEF VALVE if not factory installed N WARNING Temperature and pressure relief valve discharge piping must be piped near the floor to eliminate potential of severe burns Do not pipe in any area where freezing could occur Do not install any shut off valves plugs or caps to the temperature and pressure relief valve or piping 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 After the pressure has been relieved close the faucet The C
10. AM 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 The use of an in line Y style strainer is required to prevent accumulation of sludge in the water heater s coil VACUUM BREAKER a MINIMUM LOW COLD WATER WATER LINE HOT WATER OUTLET SUPPLY LA 1 MINIMUM PIPING TO CIRCULATOR Pa TEMPERATURE i AND PRESSURE RELIEF VALVE de BOILER SUPPLY WATER Lo TANTA TEMPERATURE IF NEEDED LIMIT Y STRAINER e H HH CIRCULATOR MOUNTED BOILER RETURN Lo CLOSE TO FLOOR AL wy X INDIRECT FIRED WATER HEATER BOILER DRAIN VALVE Figure 4 Typical Steam Boiler Connections connections available below the water line 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 FILL BOILER SYSTEM 1 On new boiler installations do not purge the boiler or space heating system through the wat
11. ATURE AND PRESSURE RELIEF VALVE THIS IS NOT A SOLUTION AND CAN CREATE A HAZARDOUS SITUATION 3 Anode Inspection and Replacement This water heater is equipped with multiple sacrificial anodes Anodes protect the glass lined tank from corrosion by sacrificing themselves through electrolysis When the anode material is consumed there is no more protection and corrosion of the tank accelerates Inspection of the anode every year allows you to identify a spent anode and replace Replace the anode when its diameter is 3 8 of an inch or every other year which ever is first Aggressive very hot and softened water causes rapid consumption of the anode requiring frequent inspections Anodes are available from your distributor or from the manufacturer 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 30 Maintenance continued 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 Connect a hose to the drain valve Locate the hose s discharge in an area where any remaining hot water will not cause any damage or injury b Open the drain valve to flush any sediment out of the bottom to the heater c Shut off the cold water supply Make sure all hot water fixtures and circulating pumps are turned off
12. 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 fabrica cuyo nombre aparece in la placa de especificaciones A 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 a Do not store or use gasoline or other flammable liquids in the vicinity of this water heater or any other appliance INSTALLA TIONOPERATING 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 238 43480 00G REV 10 13 CONGRATULATIONS You have just 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 We require that you carefully read this manual as well as the enclosed warranty and refer to it if questions arise you have any specific questions concerning your warranty please consult the plumbing professional
13. OLD water inlet and HOT water outlet are identified on the top of the water heater Make the proper plumbing connections between the water heater and the plumbing system to the house Install a shut off valve in the cold water supply line 2 If this water heater is installed in a closed water supply system such as one having a back flow preventer in the cold water supply provisions must be made to control thermal expansion DO NOT operate this water heater in a closed system without provisions for controlling thermal expansion Warranties do not cover damages from thermal expansions such as pressure bulges and or deformities A properly sized expansion tank will alleviate most problems Your water supplier or local plumbing inspector should be contacted on how to control this situation 3 After installation of the water lines open the main water supply valve and fill the water heater While the water heater is filling open several hot water faucets to allow air to escape from the water system When steady streams of water flow through the faucets close them and check all water connections for possible leaks 21 Water Connections continued 4 NEVER OPERATE THE WATER HEATER WITHOUT FIRST BEING CERTAIN THAT IT IS FILLED WITH WATER INSTRUCTIONS FOR BOILER CONNECTIONS The indirect fired heater connection labeled To Boiler Return should be piped to the boiler return piping as close to the boiler as possible and especially after
14. REY X HEATING ZONE S COLD WATER X SUPPLY BOILER SPACE HEATING EXPANSION TANK ZONE VALVE 1 RETURN DK i t TO BOILER RETURN 5 E o oem vase Li INDIRECT FIRED WATER HEATER Figure 2 Water Boiler Piping with Zone Valves 2 For a space heating system that utilizes CIRCULATORS refer to Figure 3 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 The use of shut off valves and unions are recommended for future service convenience The use of an air separator and vent is recommended to eliminate air in the system Pipe and fittings between the boiler and indirect fired water heater must be 34 diameter or larger VACUUM BREAKER COLD WATER HOT WATER OUTLET SUPPLY TEMPERATURE AIR VENT CIRCULATOR AND PRESSURE 9 RELIEF VALVE AIR SEPARATOR 4 pre FROM BOILER oO VALVE SUPPLY pK OHN Dl HA EXPANSION TANK IF NEEDED IAS TO SPACE SUPPLY ER toi HEATING ZONE S SUPPLY See BOILER SPACE HEATING EXPANSION TANK CIRCULATOR RETURN DEE HA y 4 TO BOILER RETURN 5 E FROM SPACE DRAIN VALVE S E HEATING ZONE S INDIRECT FIRED WATER HEATE Figure 3 Water Boiler Piping with Circulators 23 R Water Connections continued CONNECT STE
15. anadian Patents 1 272 914 1 280 043 1 289 832 2 045 862 2 092 105 2 107 012 2 108 186 2 112 515 Complete the following information and retain for future reference Model No Serial No Service Phone Days Nights Address Supplier Supplier Phone No 35 NOTES 36
16. any flow control or check valves in the space heating return piping The use of a union and a shut off valve is recommended The use of a flow control or check valve is required to prevent back flow through the water heater during operation of the space heating system Pipe and fittings between the boiler and indirect fired water heater should be 34 diameter or larger 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 The use of shut off valves and unions are recommended for future service convenience The use of an air separator and vent is recommended to eliminate air in the system Pipe and fittings between the boiler and indirect fired water heater must be 34 diameter or larger A CAUTION Maximum boiler water supply temperature to the indirect heat exchanger must not exceed 240 F 116 C 22 Water Connections continued VACUUM BREAKER COLD WATER HOT WATER OUTLET SUPPLY TEMPERATURE E AIR VENT AND PRESSURE CIRCULATOR RELIEF VALVE AR SEPARATOR PRESSURE FRON BOILER Of VALVE x SUPPLY py gt 1 DR Da EXPANSION E IF NEEDED TO SPACE SUR
17. control system that was under water This water heater is suitable for installation on combustible flooring DO NOT install this water heater on carpeting DO NOT operate this water heater without first being certain it is filled with water Flammable items pressurized containers or any other potential fire hazardous articles must never be placed on or adjacent to the heater Containers of flammable gases should not be stored or used in the same room with this water heater 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 generally two weeks or more Hydrogen gas is extremely flammable To prevent the possibility of injury under these conditions we recommend that the water faucet be opened for several minutes at the kitchen sink before you use any electrical appliance that is connected to the hot water system If hydrogen is present there will be unusual sounds such as air escaping through the pipes as hot water begins to flow Do not smoke or have open flame near the faucet at the time it is open RES 3 4 NPI 1 NPT COM SECTION II SPECIFICATIONS POTABLE WATER FITTINGS gz Nae y e 5 ANODES 3 COLD WAT os HOT WATE COM 1 NPT 1 NPT ER INLET R OUTLET TEMPERATURE AND PRESSURE RES 3 4 RELIEF VALVE NPT FROM BOILER SUPPLY AQUASTAT WELL COUPLING
18. e the risk of scalds Some states require settings to specific lower temperatures General Information continued TEMPERATURE AND PRESSURE RELIEF VALVE N WARNING Keep clear of the combination temperature and pressure relief valve discharge line outlet The discharge may be hot enough to cause scald injury The water is under pressure and may splash For protection against excessive temperatures and pressure install temperature and pressure protective equipment required by local codes but not less than a combination temperature and pressure relief valve certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials as meeting the requirements of the Standard for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems ANSI Z21 22 and the Standard CAN1 4 4 Temperature Pressure Temperature and Pressure Relief Valves and Vacuum Relief Valves The combination temperature and pressure relief valve must be marked with a maximum set pressure not to exceed the maximum working pressure of the water heater The combination temperature and pressure relief valve must also have an hourly rated temperature steam BTU discharge capacity not less than the hourly rating of the water heater The supplied combination temperature and pressure relief valve when properly installed and unrestricted will discharge the maximum input produced by a 240 F 115 C boiler s
19. er heater During any boiler or space heating system flushing cleaning or purging the water heater should be isolated to avoid possible attack on the carbon steel coil by chemical additives 2 Purge air from boiler water heater piping 3 Check system for leaks Repair as necessary 24 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 N DANGER Positively assure all electrical connections are unpowered before attempting installation or service of electrical components or connections of the water heater or building Lock out all electrical boxes with padlock once power is turned off N WARNING When installed the water heater must be electrically grounded in accordance with local codes or in the absence of local codes with the National Electrical Code ANSI NFPA 70 and or the CSA C22 1 Electric Code Failure to properly wire electrical connections to the water heater may result in serious physical harm Electrical power may be from more than one source Make sure all power is off before attempting any electrical work This indirect fired water heater is supplied with an aquastat temperature control This aquastat must be installed in the aquastat well location of the water heater Refer to Figure 5 Remove the cover and loosen the clamping screws
20. for automatic dishwasher and laundry use can cause scald burns resulting in serious personal injury and or death The temperature at which injury occurs varies with the person s age and the time of exposure The slower response time of disabled persons increases the hazards to them NEVER allow small children to use a hot water tap or to draw their own bath water NEVER leave a child or disabled person unattended in a bathtub or shower Important Information continued A 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 Always wear protective clothing and equipment when installing starting up or servicing this water heater to prevent scald injuries Do not rely on the pressure and temperature gauges to determine the temperature and pressure of the water heater This water heater contains components that become very hot Do not touch any components unless they are cool Improper installation adjustments alteration service or maintenance can cause property damage personal injury or loss of life Failure to follow all instructions in the proper order can cause personal in
21. fter 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 Adjusting to a lower temperature setting will not immediately affect water temperature Draw sufficient water or allow the water heater to remain idle until a heat up cycle is initiated Repeat step 3 b Adjusting to a higher temperature may not immediately affect water temperature If a heat up cycle begins return to step 3 If a heat up cycle does not begin draw sufficient water or allow the water heater to remain idle until a heat up cycle is initiated Repeat step 3 SECTION VIII MAINTENANCE This indirect fired water heater is intended to provide a service life of many years Components that require service however may be subject to failure Failure to use the correct procedures or parts in these circumstances may make the water heater unsafe The owner should arrange to have the following inspections and simple maintenance procedure performed by qualified service personnel at the frequencies suggested Boiler and Domestic Water Piping Annual Check all piping for signs of leakage at joints unions and shut off valves Repair as needed Temperature Pressure Relief Valve Annual The temperature pressure relief valve should be checked to ensure that it is in operating conditio
22. in the field involved Plumbing and electrical work are required 26 Electrical Connections continued SYSTEM START UP Follow boiler installation instructions to place boiler in operation SEQUENCE OF OPERATIONS 1 Aquastat senses stored water temperature drops below desired setting a Domestic hot water priority only Normally closed contacts open to interrupt space heating 2 Aquastat satisfied a Aquastat contacts open turning off domestic hot water circulator and de energizing relay Normally open contacts open stopping boiler operation c Domestic hot water priority only Normally closed contacts close returning boiler control to space heating WATER TEMPERATURE ADJUSTMENT 1 The aquastat controls the maximum water temperature in the tank The differential is variable 5 to 30 F with a 160 F maximum setting set at the factory to a 5 F differential and 120 F temperature N WARNING SCALDING This water heater can deliver scalding temperature water at any faucet in the system Be careful whenever using hot water to avoid scalding injury By setting the aquastat on this water heater to obtain an increased water temperature you may create the potential for scald injury To protect against injury you should install an ASSE approved mixing valve a device to limit the temperature of water to protect against scald injury via mixing hot and cold water supply in the water system This valve will reduce point of
23. installation instructions Check main service switch Check fused disconnect Circulator does not operate Check power supply Replace as necessary Improper aquastat setting or calibration Turn tank aquastat to appropriate setting Zone valve does not open if used Check power supply Replace as necessary Electrical problem relay wiring etc Check fuse and replace Check circuit breaker and reset if applicable Check power supply Scale build up If boiler circulator and tank are operating satisfactorily coil may have scale coating See Section VII Maintenance Clogged cold water filter or boiler supply strainer if used 32 Clean or replace filter or strainer Trouble Shooting Guide continued PROBLEM Water at faucet too hot Insufficient hot water CAUSE Aquastat set too high SOLUTION Lower aquastat setting See Section VII Improper system plumbing Compare plumbing to Section V Water Connections Improper system wiring Aquastat setting too low Undersized boiler with no priority to domestic hot water Compare wiring to Section VI Electrical Connections Adjust aquastat to higher setting See Section VII Rewire for priority Peak use of hot water is greater than tank storage capacity Determine peak usage and compare to tank capacity Faulty tank aquastat Replace aquastat Boi
24. jury or death Read and understand all instructions including all those contained in component manufacturer s manuals which are provided with the appliance before installing starting up operating maintaining or servicing this appliance Keep this manual and literature in legible condition and posted near the appliance for reference by owner and service technician This water heater requires regular maintenance and service to operate safely Follow the instructions contained in this manual Installation maintenance and service must be performed only by an experienced skilled and knowledgeable installer or service agency To comply with NSF requirements this water heater is to be a Sealed to the floor with sealant in a smooth and easily cleanable way or b Installed with an optional leg kit that includes legs and or extensions that provide a minimum clearance of 6 beneath the water heater Important Information continued A 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 DO NOT tamper with or alter the water heater and or controls DO NOT operate the water heater if any external part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the
25. lators With space heating zones using circulators the indirect fired heater should be added as an additional zone with a circulator 2 Zone Valves Select a valve with a low pressure drop to assure adequate flow through the water heater 3 Hybrid The space heating zone can be zoned using zone valves and the indirect fired heater zoned with a circulator Pre installation continued DOMESTIC HOT WATER PRIORITY Two options are available Priority and Non Priority 1 Priority Demand for space heating is interrupted or postponed until the domestic hot water demand is satisfied This option provides maximum delivery of domestic hot water Priority is recommended when a Boiler net output is 100 000 Btu per hour or less or b When boiler output required to satisfy domestic hot water demand is at least 50 of the boiler output required to satisfy space heating demand or c When an interruption in space heating can be tolerated during a long domestic hot water draw Non Priority Boiler output is divided between space heating and domestic hot water heating Delivery of domestic hot water can be reduced during simultaneous space and domestic hot water heating operations depending on such factors as boiler output boiler over sizing number of space heating zones calling for heat and the ratio of domestic hot water load to space heating load Pre installation continued Component Location A CAUTION Thi
26. ler cycles more than 5 times per day in summer Excessive demand Reduce demand or consider larger tank Faulty aquastat Replace aquastat Boiler high limit set too low Increase boiler high limit setting 33 SECTION X PARTS LIST PPE PART NAME amp 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 amp P Relief Valve 12 Control Escutcheon 34 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 Manufactured under one or more of the following U S Patents RE 34 534 B1 5 341 770 4 416 222 4 628 184 4 669 448 4 672 919 4 808 356 4 829 983 4 861 968 4 904 428 5 000 893 5 023 031 5 052 346 5 081 696 5 092 519 5 115 767 5 199 385 5 277 171 5 372 185 5 485 879 5 574 822 5 596 952 5 660 165 5 682 666 5 761 379 5 943 984 5 954 492 5 988 117 6 142 216 6 395 280 6 684 821 7 007 748 7 063 132 Other U S and Foreign patent applications pending Current C
27. llows water heater movement during service if adequate clearance cannot be provided 3 Thermal Expansion Tank If the water heater is installed in a closed water supply system such as one having a back flow preventer in the cold water line provide thermal expansion control Contact the water supplier or local plumbing inspector for additional information N WARNING Do not plug the inlet and outlet tappings of tankless heater left installed in the boiler MOVE THE WATER HEATER TO A PERMANENT POSITION BY SLIDING OR WALKING NOTICE For California installation this water heater must be braced anchored or strapped to avoid falling or moving during an earthquake See instructions for correct installation procedures Instructions may be obtained from DSA Headquarters Office 1102 Q Street Suite 5100 Sacramento California 95811 SECTION V WATER CONNECTIONS N 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 HYDROGEN GAS IS EXTREMELY FLAMMABLE To prevent the possibility of injury under these conditions we recommend the hot water faucet be opened for several minutes at the kitchen sink before you use any electrical appliance that is connected to
28. n To check the relief valve lift the lever at the end of the valve several times The valve should seat properly and operate freely If water does not flow remove and inspect for obstructions or corrosion Replace with a new valve of the recommended size as necessary Do not attempt to repair the valve as this could result in improper operation and a tank explosion In areas with poor water conditions it may be necessary to inspect the temperature pressure relief valve more often than once a year 29 Maintenance continued N 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 If the temperature pressure relief valve on the heater discharges periodically or continuously it may be due to thermal expansion of water in a closed water supply system or it may be due to a faulty relief valve Thermal expansion is the normal response of water when it is heated In a closed system thermal expansion will cause the system pressure to build until the relief valve actuation pressure is equaled Then the relief valve will open allowing some water to escape slightly lowering the pressure Contact your water supplier or local plumbing inspector on how to control this situation ABOVE ALL DO NOT PLUG THE TEMPER
29. rs with single wall heat exchangers meets the Uniform Plumbing Code for installation in all potable water systems provided that e The boiler water including additives is practically non toxic having toxicity rating of class of 1 as listed in Clinical Toxicology of Commercial Products e The boiler water pressure is limited to maximum 30 psig by approved relief valve e The heat transfer medium is potable water or contains only substances that are recognized as safe by the U S Food and Drug Administration FDA e The pressure of the heat transfer medium is maintained less than the normal minimum operating pressure of the potable water system e The equipment is permanently labeled to indicate that only additives recognized as safe by the FDA shall be used in the heat transfer medium ADJUSTABLE AQUASTAT The temperature may be adjusted from 80 F to 160 F 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 Refer to the Warnings and the section on SCALDING in Section VII Operating Instructions It is further recommended in all cases that the water temperature be set for the lowest temperature that satisfies your hot water needs This will also provide the most energy efficient operation of the water heater and minimizes scale formation Setting the water heater temperature at 120 F will reduc
30. s have been installed in the tank head to extend tank life The anode rods should be inspected annually to determine the amount of sacrificial decay and replaced when necessary to prolong tank life Water conditions in your area will influence the time interval for inspection and replacement of the anode rod The use of a water softener may increase the speed of anode consumption More frequent inspection of the anode is needed when using softened or phosphate treated water Contact the plumbing professional who installed the water heater or the manufacturer listed on the rating plate for anode replacement information SECTION IV PRE INSTALLATION UNPACKING INSPECT SHIPMENT carefully for any signs of damage If damage is noted do not install the product Contact the shipper or manufacturer All equipment is carefully manufactured inspected and packed Our responsibility ceases upon delivery of the packaged heater to the carrier in good condition NOTE Any claims for damage or shortage in shipment must be filed immediately against the carrier by the consignee IMPORTANT DECISIONS REQUIRED BEFORE INSTALLATION SIZING 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 If the heat source has less capacity the output of the tank will be reduced To de
31. s 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 When such locations cannot be avoided a suitable drain pan must be installed under the water heater The drain pan depth must be suitable for draining and collecting water and have a minimum length and width of at least four 4 inches measured from the jacket of the water heater The drain pan as described above can be purchased from your plumbing professional The drain pan must be piped to an adequate drain The piping must be at least inch in diameter and pitched for proper drainage Pe oe oe oe Table 6 Combustible Material Clearances Recommended Service Clearances Non Piping Front T amp P Relief Side Aquastat Rear Valve Side Table 7 Service Clearances CAUTION Do not drop water heater Do not bump water heater jacket against floor 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 Shut off Valves Allows isolation of water heater from domestic water system and or boiler system during service 2 Unions A
32. termine the approximate reduction in output from the tank use the following formula New Rating maximum continuous draw rating x Actual Boiler Output Capacity Minimum Boiler Output Capacity For example what would the continuous draw rating be if a 50 gallon indirect fired heater were installed with a heat source having a DOE heating capacity of 125 000 BTU h Answer New Rating 235 gal hr x 125 000 BTU h 157 000 BTU h 235 gal hr x 0 796 187 gal hr Pre installation continued NOTICE Increasing the boiler DOE heating capacity above the values listed in Table 3 will not increase the rating of the water heater 2 Circulator Sizing Refer to Table 5 for the corresponding pressure drop through the coil for the given model Calculate the pressure drop of all straight pipe and fittings on the supply and return of the water heater at the selected flow rate Add the piping fitting pressure drop to the pressure drop through the water heater coil Select a circulator that will provide an appropriate flow rate at the combined pressure drop 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 For this reason the preferred method of zone control is with circulators 1 Circu
33. upply temperature A lower boiler supply temperature will reduce the input required to be discharged in the event of excessive potable water temperatures Install the combination temperature and pressure relief valve into the opening provided and marked for this purpose on the water heater Some models may already be equipped or supplied with a temperature and pressure relief valve Verify that the combination temperature and pressure relief valve complies with local codes If the temperature and pressure relief valve does not comply with local codes replace it with one that does General Information continued N 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 The discharge opening must not be subjected to blockage or freezing DO NOT thread plug or cap the discharge line Itis recommended that a minimum clearance of four 4 inches be provided on the side of the water heater for servicing and maintenance of the combination temperature and pressure relief valve Do not place a valve between the combination temperature and pressure relief valve and the tank SACRIFICIAL ANODES Three sacrificial anode rod

INDIRECT-FIRED - Bradford White

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