A.O. Smith Burkay HW-300, Instruction Manual

Page 1: ...t followed exactly a fire or explosion may result causing property damage personal injury or death Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s...

Page 2: ...Instructions 40 Venting Maintenance 41 WIRING 42 Wiring Connections 42 PIPING DIAGRAMS 47 LIMITED WARRANTY 61 TABLE OF CONTENTS TABLE OF CONTENTS 2 SAFE INSTALLATION USE AND SERVICE 3 GENERAL SAFETY 4 INTRODUCTION 5 Abbreviations Used 5 Qualifications 5 DIMENSIONS AND CAPACITY DATA 6 CONTROL COMPONENTS 8 BOILER INSTALLATION CONSIDERATIONS 12 Hydronic System 12 Hot Water Supply Boiler System Genera...

Page 3: ...azardous situation which if not avoided could result in property damage WARNING CAUTION CAUTION DANGER All safety messages will generally tell you about the type of hazard what can happen if you do not follow the safety message and how to avoid the risk of injury The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of substances known t...

Page 4: ...ction safely on propane LP gas and no attempt should be made to convert a boiler from natural gas to propane LP gas Propane LP gas must be used with great caution It is highly explosive and heavier than air It collects first in the low areas making its odor difficult to detect at nose level If propane LP gas is present or even suspected do not attempt to find the cause yourself Leave the building ...

Page 5: ...rly installed and maintained it should give you years of trouble free service Abbreviations Used Abbreviations found in this Instruction Manual include ANSI American National Standards Institute ASME American Society of Mechanical Engineers NEC National Electrical Code NFPA National Fire Protection Association UL Underwriters Laboratory CSA Canadian Standards Association INTRODUCTION Qualification...

Page 6: ... 1 4 1 1 2 1 1 2 2 2 M Pipe Size of Water Outlet NPT 1 1 4 1 1 2 1 1 2 2 2 N Pipe Size of Gas Inlet NPT 3 4 3 4 1 1 1 P Control String Plus 1 2 Jacket Diameter approx 26 5 8 676 27 1 2 699 27 1 2 699 24 1 2 622 24 1 2 622 S Horizontal Length between Water Inlet and Outlet 5 3 8 137 5 1 2 140 5 1 2 140 5 3 4 146 5 3 4 146 T Control String from Jacket 5 127 5 127 5 127 7 178 7 178 Approximate shippi...

Page 7: ...582 509 Propane LPH 7 708 3 854 3 083 2 569 2 202 1 927 HW 520 Natural 520 000 152 GPH 2 521 1 261 1 008 840 720 630 Propane LPH 9 544 4 772 3 818 3 181 2 727 2 386 HW 670 Natural 660 000 193 GPH 3 200 1 600 1 280 1 067 914 800 LPH 12 113 6 057 4 845 4 038 3 461 3 028 HW 670 Propane 670 000 196 GPH 3 248 1 624 1 299 1 083 928 812 LPH 12 297 6 148 4 919 4 099 3 513 3 074 ELECTRICAL REQUIREMENTS Mod...

Page 8: ...8 Figure 2 COMPONENT LOCATIONs CONTROL COMPONENTS ...

Page 9: ... push the reset button The high limit switch may be reset after the coil surface cools to 6 F 3 3 C below the trip setting AUTO RESET HIGH LIMIT The high limit is a safety device wired in series with the ignition system Set the high limit control to approximately 100 F above the maximum designed system temperature If the boiler outlet water temperature should exceed the high limit setting the main...

Page 10: ...mply with ASME code Properly sized Pressure Relief Valve must be installed in opening provided Can result in overheating and excessive tank pressure Can cause serious injury or death Water Damage Hazard Pressure Relief Valve discharge pipe must terminate at adequate drain CAUTION If any pressure relief valve is replaced the replacement valve must comply with the current editions of the ASME Boiler...

Page 11: ...ing It is further recommended in all cases that the water temperature be set for the lowest temperature which satisfies the user s hot water needs This will also provide the most energy efficient operation of the boiler and minimize scale formation The boiler should be located in an area where the general public does not have access to set temperatures Setting the water temperature at 120 F 49 C w...

Page 12: ... 2 1 1 2 1 1 4 1 HW 399 20 10 35 15 40 20 40 20 32 18 16 16 60 13 1 1 2 HV 150 125 2 1 1 2 1 1 2 1 1 4 HW 420 20 10 35 15 40 20 40 20 34 19 17 17 60 13 1 1 2 HV 150 125 2 1 1 2 1 1 2 1 1 4 HW 520 20 10 20 10 35 17 40 20 42 42 24 21 2 1 2 1 1 2 HV 1 1 2 HV 150 2 1 2 2 1 1 2 1 1 2 HW 670 20 10 30 15 35 17 40 20 54 36 31 27 60 13 2 1 2 2 1 1 2 HV 3 2 1 2 2 1 1 2 NOTE Pipe loop sizes and pump selectio...

Page 13: ... increase in water pressure due to thermal expansion Thermal expansion can cause premature tank failure leakage This type of failure is not covered under the limited warranty Thermal expansion can also cause intermittent Temperature Pressure Relief Valve operation water discharged from the valve due to excessive pressure build up This condition is not covered under the limited warranty The Tempera...

Page 14: ...dle to the proper pipe size see Figure 9 below If a standard tee is used install a face or hex bushing in the top opening The paddle must be adjusted or trimmed to the size of the pipe in which it will be installed Any part of the paddle must not touch the pipe or any restrictions in the pipe Screw the flow switch in position so the flat of the paddle is at right angles to the flow The arrow on th...

Page 15: ...s in the common venting system 2 Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage or restriction leakage corrosion and other deficiencies which could cause an unsafe condition 3 Insofar as is practical close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting syst...

Page 16: ...ventilation air must be taken from outdoors Do not place chemical vapor emitting products near the boiler Breathing carbon monoxide can cause brain damage or death Always read and understand instruction manual Chemical Vapor Corrosion Boiler corrosion and component failure can be caused by the heating and breakdown of airborne chemical vapors Spray can propellants cleaning sol vents refrigerator a...

Page 17: ...ign and free area are not known it shall be assumed that wood louvers will have 25 free area and metal louvers and grilles will have 75 free area Non motorized louvers and grilles shall be fixed in the open position Fresh Air Openings for Confined Spaces The following instructions shall be used to calculate the size number and placement of openings providing fresh air for combustion ventilation an...

Page 18: ...inimum free area of 1 square inch per 1 000 Btu hr 1100 mm2 per kW of the aggregate input rating of all appliances installed in the enclosure Each opening shall not be less than 100 square inches 645 cm2 OUTDOOR AIR THROUGH TWO HORIZONTAL DUCTS The confined space shall be provided with two permanent horizontal ducts one commencing within 12 inches 300 mm of the top and one commencing within 12 inc...

Page 19: ...er gas regulation the lock up style regulators must be installed no closer than a minimum of 3 feet from the boiler and a maximum of 8 feet away from the boiler Exposure to higher gas supply pressure may cause damage to gas control valves which can result in fire or explosion If overpressure has occurred such as through improper testing of gas lines or emergency malfunction of supply system the ga...

Page 20: ... 3 749 3 192 2 841 2 577 2 372 2 197 2 109 1 962 1 757 1 611 1 464 1 347 Table 13 Suggested Pipe Size For Multiple Gas Appliances Propane Gas Nominal Maximum Capacity of Pipe in BTU hr and kW for Gas Pressures of 14 in W C 0 5 psi or Less and Iron Pipe a Pressure Drop of 0 5 in W C based on 0 60 Specific Gravity Gas w Heating Value of 1 000 BTU s Ft3 Size Length of Pipe in Feet Meters Inches 10 3 ...

Page 21: ... methods or if a suitable draft cannot be obtained a blower type flue gas exhauster may be employed to ensure proper venting and correct combustion if permitted by local codes Vent connectors serving appliances vented by natural draft shall not be connected into any portion of mechanical draft systems operating under positive pressure CONNECTING BOILER TO A COMMON VENT Do not connect the boiler to...

Page 22: ...lage at the draft hood relief opening after five minutes of main burner operation Use the flame of a match or candle After it has been determined that each appliance remaining connected to the common venting system properly vents when tested as outlined above return doors windows exhaust fans fireplace dampers and any other gas burning appliance to their previous conditions of use Any improper ope...

Page 23: ...ft Hood Outlet 10 Required Connector or Smoke Pipe Diameter Connector Rise in Feet Total Vent Height Measured in Feet Above Draft Hood 10 15 20 30 40 50 60 80 100 Connector Diameter in Inches 1 14 14 14 12 12 12 12 12 12 2 12 12 12 12 12 12 12 12 12 3 12 12 12 12 10 10 10 10 10 4 or more 12 12 12 12 10 10 10 10 10 Number if Units Combined Total Input Btuh x 1000 Total Vent Height Measured in Feet ...

Page 24: ...ial severe personal injury death or substantial property damage GAS SUPPLY CONNECTIONS GAS supply PIPE CONNECTIONS 1 Make sure to install ground joint union for servicing In Canada When using manual main shutoff to support the weight of the piping with valves ensure that it is identified by the installer 2 Install sediment trap per NFPA 54 for US and CAN B149 1 for Canada 3 Support the piping with...

Page 25: ...ell as increased risk of fire sooting and asphyxiation If gas pressure regulator cannot be adjusted to correct pressure with sufficient gas pressure at the valve replace with new gas control valve Gas Manifold Pressure Regulators The gas manifold pressure regulator is included in the combination gas control valve Figure 18 and is set to operate on the gas specified on the boiler model and rating p...

Page 26: ...ectors Precautions If the unit is exposed to the following do not operate boiler until all corrective steps have been made by a qualified service technician Flooding to level of burner or controls or higher Exposure to fire If damaged Firing without water Sooting Pilot and Main Burner To maintain safe operation of the boiler check the pilot and the main burner once every six months for proper flam...

Page 27: ... See Figure 20 Check for good terminal connection at the sensing probe at the pilot burner assembly if pilot does not light Check for electrical power to the valve If electrical power and gas are present at the valve and the pilot does not operate when system calls for heat replace valve e Low gas pressure Adjust pilot flame by means of the pilot gas adjustment located in the gas control valve The...

Page 28: ...is formula to clock the meter Be sure that other gas consuming appliances are not ON during this interval 3600 x H Btuh T Btuh The approximate actual input rate T Time in seconds to burn one cubic foot of gas H HeatingvalueofthefuelgasinBtupercubicfootofgas EXAMPLE T 9 0 seconds ft3 H 1050 Btu ft3 natural gas Btuh Gas flow through meter 3600 x 1050 420 000 Btuh 9 0 Small changes in the input rate ...

Page 29: ...0M After 15 sec ignition shut down 5 minute time delay before re try S 8600H After 15 sec ignition system locks out must be manually reset FLAME CURRENT SENSED Spark generator off Second valve operator main opens MAIN BURNER OPERATION Module monitors pilot flame current THERMOSTAT CONTROLLER SATISFIED Valves close pilot and main burners are off POWER INTERRUPTION System shuts off restarts when pow...

Page 30: ...30 LIGHTING AND OPERATING INSTRUCTIONS NATURAL AND PROPANE FOR HW300 HW399 ...

Page 31: ...31 LIGHTING AND OPERATING INSTRUCTIONS NATURAL AND PROPANE WITH I I D FOR HW420 UP ...

Page 32: ... off delay of approximately 2 minutes Pump and burner remain on Tank temperature control thermostat defective Replace System wiring is incorrect Correct wiring Circulating pump on Pump wired for continuous operation Correct wiring Burner on Gas control valve stuck or defective Correct or replace valve System wiring is incorrect Correct wiring Set tank temperature control thermostat 20 F 10 C above...

Page 33: ... ceramic insulator surrounding the electrode cracked or broken Replace pilot burner assembly Replace ignition module Turn on gas supply Turn on power supply Securely connect cable and or ground wire Carefully bend downward top of ground strap to achieve 1 8 spark gap Replace Ignition Module YES NO YES YES NO NO NO Is voltage 24 Vac across the PV MV PV terminals on call for heat YES NO NOTE S 8600M...

Page 34: ...attached to pilot assembly and GND terminal on module Are ignition cable and ground wire in good condition not brittle burnt or cracked Ensure ground strap is the closest metal to the igniter sensor rod electrode to prevent the spark from shorting out to other metal parts pilot screen pilot shield etc Ignition cable must not touch metal surfaces or current carrying wires Is there a 1 8 gap between...

Page 35: ...r sensor rod in good condition not broken or cracked Is the igniter sensor rod in good condition not worn corroded sooted or damaged Replace ignition module Correct the situation by consulting the installation or user s manual on how to adjust pilot flame Is voltage 24 Vac across terminals MV MV PV Are the wires securely attached to the main valve operator on the gas control and to terminals MV MV...

Page 36: ...ilot ground wire firmly attached to the pilot assembly and GND terminal on module Are high voltage cable and ground wire in good condition not brittle burnt or cracked Make sure pilot flame spreader hood is the closest metal to the electrode to prevent the spark from shorting out to other metal parts pilot screen pilot shield etc High voltage cable must not touch metal surfaces or current carrying...

Page 37: ...F No Flame or Flame Signal below minimum threshold for system operation not applicable A Flash Code Descriptions Heartbeat Constant 1 2 second bright 1 2 second dim cycles The flash code number signifies that the LED flashes X times at 2Hz remains off for two seconds and then repeats the sequence Table 18 YELLOW LED FLAME CODES The following procedures are provided as a general guide Any module sh...

Page 38: ...Control remains in wait mode When the fault corrects control resumes normal operation after a one minute delay Check transformer and AC line for proper input voltage to the control Check with full system load on the transformer 6 2 5 minute Retry Delay On every third retry on the same Call for Heat Initiate new trial for ignition after retry delay completed Check gas supply line pilot burner spark...

Page 39: ...or proper input voltage to the control Check with full system load on the transformer 6 2 Failed trial for ignition resulting in lockout Remain in lockout until Call for Heat is cycled Check gas supply line pilot burner spark and flame sense wiring flame sensor contaminated or out of position burner ground connection 6 3 More than 5 flame failures during run on the same Call for Heat resulting in ...

Page 40: ...read zero the switch is defective and must be replaced Pressure Relief Valve Test Burn hazard Hot water discharge Keep clear of Pressure Relief Valve discharge outlet If after manually operating the valve it fails to completely reset and continues to release water turn off power to the boiler at the main disconnect switch or breaker Close the cold water inlet to the boiler and follow the draining ...

Page 41: ...ow boiler parts and vent to cool before disassembly 2 Remove the boiler draft diverter and vent pipe running to the chimney Check parts and chimney for obstructions and clean as necessary 3 Remove burner from boiler and other metal parts as required to clean and vacuum the heat exchanger and combustion coils Refer to parts list supplied with this manual for disassembly aid 4 Reinstall the parts re...

Page 42: ...e or its equivalent except for the flame sensor and ignition cable which are 250 0 c and wires connected to the coil protector which are 2000 c WIRING Wiring Connections CONVENTIONAL INSTALLATIONS All electrical work must be installed in accordance with current editions National Electrical Code ANSI NFPA 70 and or the Canadian Electrical Code PART 1 CSA C22 1 Electrical Code and must conform to lo...

Page 43: ...ND MUST BE SUPPLIED BY THE INSTALLER GAS CONTROL VALVE COIL LIMIT GND 4 X 4 JUNCTION BOX WITH TERMINAL STRIP WHITE GAS CONTROL VALVE BROWN IGNITION MODULE WHITE YELLOW WHITE RED MV MV PV PV 24V GND GND GND SPARK TO PILOT 24V MV PV MV PV MV PV MV PV THERMAL BALANCER THERMAL BALANCER FUSED DISCONNECT SWITCH FUSED DISCONNECT SWITCH TANK TEMP PROBE TANK TEMP PROBE WATER PUMP SAFETY FLOW SWITCH REQUIRE...

Page 44: ...44 Figure 25 CER TEMP 80 1 UNIT INSTALLATION FOR HOT WATER SUPPLY APPLICATION Figure 26 SCHEMATIC CER TEMP 80 1 UNIT INSTALLATION FOR HOT WATER SUPPLY APPLICATION ...

Page 45: ...45 Figure 27 CER TEMP 80 2 OR 3 UNIT INSTALLATION CONNECTION DIAGRAM FOR HOT WATER SUPPLY APPLICATION ...

Page 46: ...46 Figure 28 CER TEMP 80 2 OR 3 UNIT INSTALLATION SCHEMATIC DIAGRAM FOR HOT WATER SUPPLY APPLICATION ...

Page 47: ... assistance BURKAY HW 300 670 ONE TEMPERATURE ONE BOILER VERTICAL STORAGE TANK RECOVERY SYSTEM LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE WARNING THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITION...

Page 48: ...n assistance BURKAY HW 300 670 ONE TEMPERATURE ONE BOILER HORIZONTAL STORAGE TANK RECOVERY SYSTEM LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE WARNING THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDIT...

Page 49: ...TICAL STORAGE TANK RECOVERY SYSTEM LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE WARNING THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS EXPANSION TANK COLD WATER SUPPLY AOS STORAGE...

Page 50: ...ER HORIZONTAL STORAGE TANK RECOVERY SYSTEM LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE WARNING THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS EXPANSION TANK COLD WATER SUPPLY AOS...

Page 51: ... VERTICAL STORAGE TANK RECOVERY SYSTEM LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE WARNING THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS EXPANSION TANK COLD WATER SUPPLY AOS STO...

Page 52: ...E BOILER HORIZONTAL STORAGE TANK RECOVERY SYSTEM LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE WARNING THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS EXPANSION TANK COLD WATER SUPP...

Page 53: ...CULATING PUMP TEMPERATURE CONTROL PROBE DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE CAUTION THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS HW BOILER BOILER PIPING SIZE A INCH MANIFOLD PIPING SIZE B INCH 300 1 25 NA 399 420 1 50 NA 520 670 2 00 NA EXPANSION TANK MAKE UP WATER AIR SEP...

Page 54: ...EMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TEMPERATURE CONTROL PROBE DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE CAUTION THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS HW BOILER BOILER PIPING SIZE A INCH MANIFOLD PIPING SIZE B INCH 300 1 25 2 00 399 420 ...

Page 55: ...engineer for design assistance HW BURKAY BOILER 300 670 THREE BOILERS PRIMARY SECONDARY HYDRONIC PIPING SYSTEM LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TEMPERATURE CONTROL PROBE DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE CAUTION THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINA...

Page 56: ...engineer for design assistance HW BURKAY BOILER 300 670 FOUR BOILERS PRIMARY SECONDARY HYDRONIC PIPING SYSTEM LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TEMPERATURE CONTROL PROBE DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE CAUTION THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINAN...

Page 57: ...ating of any component in the system 3 Service valves are shown for servicing boiler However local codes shall govern their usage HW BURKAY BOILER 300 670 ZONE PUMPING HORIZONTAL BUFFER TANK HEATING SYSTEM LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TEMPERATURE CONTROL PROBE DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE CAUTION THIS D...

Page 58: ... 670 ZONE PUMPING VERTICAL BUFFER TANK HEATING SYSTEM LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TEMPERATURE CONTROL PROBE DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE CAUTION THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS EXPANSION TANK THERMAL A...

Page 59: ...BURKAY BOILER 300 670 BOILER VERTICAL BUFFER TANK HEATING SYSTEM LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TEMPERATURE CONTROL PROBE DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE CAUTION THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS EXPANSION TAN...

Page 60: ...ILER 300 670 BOILER VERTICAL BUFFER TANK 3 WAY MIXING VALVE HEATING SYSTEM LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TEMPERATURE CONTROL PROBE DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE CAUTION THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS EXP...

Page 61: ...ate or provincial law are limited to one 1 year dura tion for the boiler or any of its parts Some states and provinces do not allow limitations on how long an implied warranty lasts so the above limitation may not apply to you 5 CLAIM PROCEDURE Any claim under this warranty should be initiated with the dealer who sold the boiler or with any other dealer handling the warrantor s products If this is...

Page 62: ...62 25589 Highway 1 McBee SC 29101 Technical Support 800 527 1953 Parts 800 433 2545 Fax 800 644 9306 www hotwater com ...