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IMPORTANT

IT IS RECOMMENDED THAT A QUALIFIED PERSON PERFORM
THE INITIAL FIRING OF THE BOILER.  AT THIS TIME THE USER
SHOULD NOT HESITATE TO ASK THE INDIVIDUAL ANY
QUESTIONS WHICH HE MAY HAVE IN REGARD TO THE
OPERATION AND MAINTENANCE OF THE UNIT.

FILLING AND VENTING

1.

Fast fill system through bypass until pressure approaches

desired system pressure.  Close bypass valve and permit
pressure to be established by the pressure reducing valve.

2.

Vent all high points in system to purge system of air.

If pressure bleeding of system is desired, install valves as shown
in fig. 1.

Where cast iron radiation and motorized valves are used,
conventional system pressure and installation practices should
be followed.

Provisions should be made to permit manual venting of radiators
or convectors.

PRECAUTIONS

If the unit is exposed to the following, do not operate boiler until all
corrective steps have been made by a qualified serviceman:

1.

Flooding to level of burner or controls or higher.

2.

Exposure to fire.

3.

If damaged.

4.

Firing without water.

5.

Sooting

 

 

 CAUTION

SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO
SHUT OFF, DO NOT TURN OFF OR DISCONNECT THE
ELECTRICAL SUPPLY TO THE PUMP.  INSTEAD, SHUTOFF THE
GAS SUPPLY AT A LOCATION EXTERNAL TO THE APPLIANCE.

PILOT AND MAIN BURNER

To maintain safe operation and the greatest efficiency from the
boiler, check the pilot and the main burner once every six months
for proper flame characteristics.

1.

MAIN BURNER

The main burner, fig. 41, should display the following

characteristics:

• Provide complete combustion of gas.

• Cause rapid ignition and carryover of flame across entire

burner.

• Give reasonably quiet operation during ignition, burning

and extinction.

• Cause no excessive lifting of flame from burner ports.

If the proceeding burner characteristics are not evident, check for
accumulation of lint or other foreign material that restricts or blocks
the air openings to the burner or boiler.

Also check for good flow of combustion and ventilating air to the
unit.  Maintain a clear area around the boiler at all times.

FIGURE 41

The boiler should be periodically inspected by a qualified servicer
for continuous safe operation.

Qualified servicers should follow this procedure when the boiler’s
burners need cleaning.

1.

Turn off the electrical power and close the main manual

gas shutoff valve.

Allow boiler parts to cool before disassembly.

2.

Remove main burner manifold assembly from boiler.

Refer to parts list supplied with this manual for

disassembly aid.

3.

Remove any loose foreign material such as dust or lint

with a vacuum.  Check all ports, orifices, and air openings
for blockage.  Dislodge any foreign material causing
blockage.  Remove any soot or carbon deposits with a rag
making sure to remove any lint left on burner by vacuuming
again.

4.

Reinstall the burner manifold assembly on boiler.

5.

Restore electrical power and gas supply to boiler.

Put the boiler back in operation by following the lighting
instructions in this manual or on the lighting and
operating label on the boiler.

Check for gas leaks and proper boiler and vent
operation.

2.

PILOT BURNER - ELECTRONIC IGNITION

To establish pilot flame without main burner operation, it will
be necessary to perform the following steps:

Servicing of the pilot burner (every six months) includes keeping
pilot shield (not shown) free of lint, cleaning the burner head,
the primary air opening and the orifice of the pilot burner,
fig. 42.

1.

Open fused disconnect switch or shut off electrical power
to the boiler.

2.

Turn the gas valve control knob counterclockwise to the
“PILOT” position.

3.

Close fused disconnect switch to restore electrical power
to the boiler.

The pilot will now ignite provided the combination gas
valve knob is set at “PILOT” and the system is calling for
heat.

(Continued on Page49)

Содержание Burkay HW-300

Страница 1: ...ONTAINS INFORMATION RELATIVE TO YOUR SAFETY PLEASE READ THOROUGHLY BEFORE USING APPLIANCE WARNING If the information in this manual is not followed exactly a fire or explosion may result causing prope...

Страница 2: ...1451 68 5 16 1735 67 1702 64 3 4 1645 B Height to top of jacket 43 1 4 1099 45 1 8 1146 45 1 8 1146 56 1 4 1429 56 1 4 1429 56 1 4 1429 C Floor to center line water inlet 36 914 38 3 4 984 38 3 4 984...

Страница 3: ...831 1 627 1 464 1 331 1 220 1 127 1 046 GPH 1 935 1 290 967 774 645 553 484 430 387 352 322 298 276 HW 420 420 000 LPH 7 708 5 138 3 854 3 083 2 569 2 202 1 927 1 713 1 542 1 401 1 285 1 186 1 101 GPH...

Страница 4: ...MMON VENTINGSYSTEM 54 GENERALMAINTENANCE 55 Relief Valve 55 CLEANINGANDFLUSHINGINSTRUCTIONS 55 Internal Contaminants 55 Hot Water Supply Boilers Preventive Maintenance 55 Deliming 55 56 Deliming Solve...

Страница 5: ...OF AIR WILL CAUSE RECIRCULATION OF COMBUSTION PRODUCTS RESULTING IN AIR CONTAMINATION THAT MAY BE HAZARDOUS TO LIFE SUCH A CONDITION OFTEN WILL RESULT IN A YELLOW LUMINOUS BURNER FLAME CAUSING CARBONI...

Страница 6: ...y uncontaminated air should be obtained from remote or outside sources INSTALLATION CLEARANCES These boilers are approved for installation on combustible flooring in an alcove with minimum clearance t...

Страница 7: ...w Installations A O Smith LINEAR TEMP systems have been designed to provide efficient trouble free operation of the boiler sizes covered in this manual with any of the following conditions a Unknown s...

Страница 8: ...stallation is an excellent way to modernize the system The A O Smith boiler s should be installed on a pipe loop with a separate circulating pump selected from PUMPAND PIPE SIZING DATATABLE Figure 3 s...

Страница 9: ...PIPINGISOLATION OFTHEBOILERFROMTHECHILLER FIGURE4 If the boiler is connected to chilled water piping or its heating coils are exposed to refrigerated air the boiler piping system must be equipped with...

Страница 10: ...ched to the piping system When table 6 is to be used to select the piping size calculate the gas demand in terms of cubic feet per hour for each piping system outlet The gas demand for an appliance ca...

Страница 11: ...ith a cubic foot per hour demand of 2 060 and with 50 lineal feet of gas supply line table 6 shows a pipe size of 3 76mm is required NOTE For other than 60 specific gravity apply multiplier factor as...

Страница 12: ...or chimney must be a minimum height of 12 305mm above the annual snow fall to prevent blockage Building materials must not come in contact with combustion products from stack or chimney due to the de...

Страница 13: ...NAND UNSAFE CONDITIONS Vent connectors serving appliances vented by natural draft shall not be connected into any portion of mechanical draft systems operating under positive pressure 3 CONNECTING BOI...

Страница 14: ...12 12 12 12 12 12 12 2 12 12 12 10 10 10 10 10 10 3 12 10 10 10 10 10 10 10 10 4 or more 10 10 10 10 10 10 10 10 10 Number Total Total Vent Height Measured in Feet Above Draft Hood if Units Input 10...

Страница 15: ...he combustion products are going up the chimney or gas vent properly by passing a lighted match or taper around the edge of the relief opening of the draft hood If the chimney or gas vent is drawing p...

Страница 16: ...L REGULATIONS The boiler when installed must be electrically bonded to ground in accordance with the requirements of the authority having jurisdiction or in the absence of such requirements with the N...

Страница 17: ...ECTIONDIAGRAM HWB HW 300 399 420 500 610 NATURALGAS SINGLESTAGEI I D ROBERTSHAW GASVALVE HWB HW 300 399 420 520 610 NATURAL GAS ONLY CANADIAN MODELS FIGURE10 Robertshaw is a registered trademark of Fu...

Страница 18: ...18 18 18 18 18 CONNECTIONDIAGRAM HWB HW 420 520 610 PROPANEGAS SINGLESTAGEPROPANE ROBERTSHAWGASVALVE 24 VOLT HW HWB 420 520 610 CANADIAN MODELS FIGURE11...

Страница 19: ...19 19 19 19 19 SINGLESTAGEPROPANEROBERTSHAWGASVALVE 24 VOLT HWB HW 300 399 CANADIAN MODELS FIGURE11A CONNECTION DIAGRAM HWB HW 300 399 PROPANEGAS FIGURE13...

Страница 20: ...20 20 20 20 20 HW 300 HW 399 HW 420 HW 500 HW 670 NATURALGAS SINGLESTAGEI I D ROBERTSHAWGASVALVE HW 300 399 420 520 670 NATURAL GAS ONLY U S MODELS FIGURE11B...

Страница 21: ...21 21 21 21 21 HW 300 HW 399 HW 420 HW 500 HW 670 PROPANEGAS FIGURE12 SINGLESTAGEI I D ROBERTSHAWGASVALVE HW 300 399 420 520 670 PROPANE GAS ONLY U S MODELS FIGURE11C...

Страница 22: ...emperature thermostats A single bulb outdoor sensing control will prevent overheating of halls stairways or other uncontrolled areas There are occasions when outdoor temperatures are temporarily too w...

Страница 23: ...IAGRAM TWO BOILER LINEAR TEMP INSTALLATION WITH TWO CIRCULATORS FIGURE13 CONTROLAPPLICATIONDIAGRAM THREEBOILERLINEAR TEMP INSTALLATIONWITHTHREECIRCULATORS FIGURE14 NOTE 1 Building temperature controls...

Страница 24: ...ATION WITH TWO CIRCULATORS FIGURE15 NOTE 1 Building temperature controls supply electric power to building circulator 2 Main flow switch proves main water flow before energizing sequencing and resetti...

Страница 25: ...UNIT INSTALLATION FOR HOT WATER SUPPLY APPLICATION CANADIAN MODELS JUNCTION BOX W 6 TERMINALS FIGURE 17 FIGURE 19 CER TEMP 80 1 UNIT INSTALLATION FOR HOT WATER SUPPLY APPLICATION U S MODELS JUCNTION...

Страница 26: ...26 26 26 26 26 CER TEMP 80 2 OR 3 UNIT INSTALLATION FOR HOT WATER SUPPLY APPLICATION CANADIAN MODELS JUNCTION BOX W 6 TERMINALS FIGURE 20...

Страница 27: ...27 27 27 27 27 FIGURE 21 SCHEMATIC CANADIAN MODELS JUNCTION BOX W 6 TERMINALS...

Страница 28: ...28 28 28 28 28 CER TEMP 80 2 OR 3 UNIT INSTALLATION CONNECTION DIAGRAM FOR HOT WATER SUPPLY APPLICATION U S MODELS JUNCTION BOX W 4 TERMINALS FIGURE 22...

Страница 29: ...29 29 29 29 29 CER TEMP 80 2 OR 3 UNIT INSTALLATION SCHEMATIC DIAGRAM FOR HOT WATER SUPPLY APPLICATION U S MODELS JUNCTION BOX W 4 TERMINALS FIGURE 23...

Страница 30: ...30 30 FIGURE 24 BOOSTER RECOVERY WIRING DIAGRAM CANADIAN MODELS JUNCTION BOX W 6 TERMINALS SHURE TEMP BOOSTER RECOVERY WIRING DIAGRAM TWO TEMPERATURE SYSTEM CANADIAN MODELS JUNCTION BOX W 6 TERMINALS...

Страница 31: ...1 31 31 31 BOOSTER RECOVERY WIRING DIAGRAM U S MODELS JUNCTION BOX W 4 TERMINALS FIGURE 26 SHURE TEMP BOOSTER RECOVERY WIRING DIAGRAM TWO TEMPERATURE SYSTEM U S MODELS JUNCTION BOX W 4 TERMINALS FIGUR...

Страница 32: ...nt is recommended This will protect the dishwashers coffee urns water boilers water piping and other equipment When water softening or water treatment is not practical a comparatively easy method of p...

Страница 33: ...as shown in the installation diagrams Thermometers are installed in the system as a means of detecting a possible liming condition in the boiler An increase of 3 C 5 F over the normal temperature rise...

Страница 34: ...ON HW 520 HW 610 HW 670 WIRING FIGURES 17 18 19 INSTALLINACCORDANCE WITH ALL LOCAL CODES ONE HW 300 HW 399 HW 420 HW 520 HW 610 OR ONE HW 670 UP FLOW MODEL COMMERCIALBOILERWITHVERTICALTANK USETHISTAB...

Страница 35: ...EIR USAGE PRESSURE RELIEF VALVE RATING SHOULD NOT EXCEED PRESSURE CAPACITY OF ANY COMPONENT IN THE SYSTEM INSTALL THERMOMETER AND PRESSURE RELIEF IN OPENINGS PROVIDED ON HW 520 HW 610 HW 670 USETHISTA...

Страница 36: ...F ANY COMPONENT IN THE SYSTEM INSTALL THERMOMETER AND PRESSURE RELIEF IN OPENINGS PROVIDED ON HW 520 HW 610 HW 670 WIRING FIGURES 20 21 22 OR 23 HEATERS SPACED 30 APART INSTALLINACCORDANCE WITH ALL LO...

Страница 37: ...ED PRESSURE CAPACITY OF ANY COMPONENT IN THE SYSTEM INSTALL THERMOMETER AND PRESSURE RELIEF IN OPENINGS PROVIDED ON HW 520 HW 610 HW 670 WIRING FIGURES 20 21 22 or 23 INSTALLINACCORDANCE WITH ALL LOCA...

Страница 38: ...SHOULD NOT EXCEED PRESSURE CAPACITY OF ANY COMPONENT IN THE SYSTEM INSTALLTHERMOMETER AND PRESSURE RELIEF IN OPENINGS PROVIDED ON HW 520 HW 610 HW 670 FIGURE 33 USETHISTABLEFORCORRECT PUMPAND WATER PI...

Страница 39: ...EXCEED PRESSURE CAPACITY OF ANY COMPONENT IN THE SYSTEM INSTALLTHERMOMETERAND PRESSURE RELIEF IN OPENINGS PROVIDED ON HW 520 HW 610 HW 670 WIRING FIGURES 20 21 22 OR 23 HEATERS SPACED 24 APART INSTAL...

Страница 40: ...F IN OPENINGS PROVIDED ON HW 520 HW 610 HW 670 IMPORTANT THE INSTALLATION OF SAFETY FLOW SWITCH AS SHOWN IS REQUIRED TO PROTECT THE BOILER IN CASE OF WATER SERVICE INTERRUPTION OR CIRCULATOR FAILURE A...

Страница 41: ...E BOOSTER OUTPUT ADD ANANTI SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES USETHISTABLEFORCORRECT PUMPAND WATER PIPE SIZE Minimum B G Armstrong Model Pipe Size Pump Pump Number Inches Size Size HW 300...

Страница 42: ...STALLATION OF SAFETY FLOW SWITCH AS SHOWN IS REQUIRED TO PROTECT THE BOILER IN CASE OF WATER SERVICE INTERRUPTION OR CIRCULATOR FAILURE A O SMITH PKG NO 211480 WIRING FIGURE 24 OR 26 INSTALLINACCORDAN...

Страница 43: ...160 F with 20 F differential minimum Right Dial Tank Temperature Adjust to 140 F with 8 F differential minimum May be adjusted slightly higher if total demand of 180 F water requires higher tank tempe...

Страница 44: ...TANKS DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE AT FIXTURES SEE TANK TEMPERATURE CONTROL WARNING ON PAGE 32 IF HIGHER PREHEATTEMPERATURESARENECESSARYTO OBTAIN ADEQUATE BOOSTER...

Страница 45: ...ng causing a call for heat and allowing unit to run until High Limit Temperature Control trips 3 Resetting the High Limit Temperature Control to a higher setting unit should run 4 Reset System Control...

Страница 46: ...ics are not evident check for accumulation of lint or other foreign material that restricts or blocks the air openings to the burner or boiler Also check for good flow of combustion and ventilating ai...

Страница 47: ...OUR GAS SUPPLIER FROM A NEIGHBOR S PHONE FOLLOW THE GAS SUPPLIER S INSTRUCTIONS IF YOU CANNOT REACH YOUR GAS SUPPLIER CALL THEFIREDEPARTMENT C USE ONLY YOUR HAND TO PUSH IN OR TURN THE GAS CONTROL KNO...

Страница 48: ...UCH ANY ELECTRIC SWITCH DO NOT USE ANY PHONE IN YOUR BUILDING IMMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR S PHONE FOLLOW THE GAS SUPPLIER S INSTRUCTIONS IF YOU CANNOT REACH YOUR GAS SUPPLIER CA...

Страница 49: ...ot gas adjustment located in the gas valve The pilot flame should envelop 3 8 to 1 2 inch of the tip of the thermocouple Remove pilot adjustment cover screw fig 43b Turn inner adjustment screw or pilo...

Страница 50: ...eads from a test flashlight The model N22T test kit combination flashlight and continuity tester is manufactured by the RAY O Vac Company Madison WI and available through local suppliers With the flas...

Страница 51: ...S SECONDS Type Value HWB HWB HWB HWB HWB HWB Gas Btu Ft 3 HW 300 HW 399 HW 420 HW 520 HW 610 HW 670 Natural 1050 12 6 9 5 9 0 7 3 6 2 5 7 Propane 2500 30 0 22 6 21 4 17 3 14 8 13 4 IMPORTANT UNDER NO...

Страница 52: ...e check the rating plate before making changes The input reduction is primarily achieved by reducing the size of the main burner orifices To do this the main burner orifices require replacement with o...

Страница 53: ...2 x 1 1 2 x 1 tee for a 1 1 2 pipe application For larger pipe sizes use a reducing tee in order to keep the switch as close to the pipe as possible Install the flow switch in the branch top opening...

Страница 54: ...rdered through A O Smith dealers authorized servicers or distributors Refer to the Yellow Pages for where to call or contact the A O Smith Enterprises Ltd P O Box 310 768 Erie St Stratford Ontario N5A...

Страница 55: ...at may have accumulated during installation This is doubly important when a replacement boiler is installed into an existing system where Stop Leak or other boiler additives have been used Failure to...

Страница 56: ...inue to fill until foaming action stops 9 When foaming action has stopped completely allow 10 to 15 minutes for the solvent to dissolve any remaining scale in the unit 10 Open the drain cock and drain...

Страница 57: ...wiring Repair or defective replace valve Circulating pump Power off or system Check power supply and burner off wiring is incorrect and wiring Tank temperature control Replace thermostat defective Bur...

Страница 58: ...s the 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 w...

Страница 59: ...e firmly 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...

Страница 60: ...he igniter 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 consultin...

Страница 61: ...pilot 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...

Страница 62: ...dministrative charges for forwarding the replacement part from the nearest distributor and returning the claimed defective part to such distributor c All cost necessary or incidental for any materials...

Страница 63: ...63 63 63 63 63...

Страница 64: ...64 64 64 64 64 5621 W 115TH STREET ALSIP IL 60803 PHONE 1 800 433 2545 FAX 1 800 433 2515 E MAIL parts hotwater com www hotwater com REPLACEMENT PARTS...

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