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DOMINATOR SERIES FINNED COPPER 

GAS BOILERS (MODEL DB) & 

WATER HEATERS (MODEL DW)

INSTALLATION & OPERATION MANUAL

DOM-IOM-5

82-0262

260 North Elm Street  

7555 Tranmere Drive

Westfi eld, MA 01085 

 

 

Mississauga, Ontario L5S 1L4 Canada 

Phone: (413) 568-9571

 

 

Phone: (905) 670-5888

Fax: (413) 568-9613 

Fax: (905) 670-5782

INSTALLER, THESE INSTRUCTIONS TO BE AFFIXED ADJACENT TO THE UNIT.

CONSUMER, RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE PURPOSES.

WARNING: If the information in this manual is not followed exactly, a fire 
or explosion may result causing property damage, personal injury or loss of life.

Do not store or use gasoline or other fl ammable 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 phone. Follow the gas 

supplier’s instructions.

•  If you cannot reach your gas supplier, call the fi re department.
Installation and service must be performed by a qualifi ed installer, service agency or 
the gas supplier.

MEA#117-96-E

DESIGNED AND TESTED ACCORDING TO A.S.M.E. BOILER AND PRESSURE 
VESSEL CODE, SECTION IV FOR A MAXIMUM ALLOWABLE WORKING PRESSURE 
OF 160 PSI, 

1103 kPa

 WATER.

WARNING: Failure to properly vent this unit can cause excessive amounts of carbon 
monoxide resulting in severe personal injury or death!

Summary of Contents for DOMINATOR Series

Page 1: ...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 us...

Page 2: ...tallation must conform to the Standard for Controls and Safety Devices for Automatically Fired Boilers ANSI ASME CSD 1 In Canada the installation must be in accordance with the requirements of CSA B14...

Page 3: ...ed directly on combustible flooring but never on carpeting 4 Locate the boiler water heater in an area that will prevent water damage to adjacent construction should a leak occur or during routine mai...

Page 4: ...the enclosure The bottom opening must be within 12 in 305 mm of but not less than 3 in 76 mm from the bottom of the enclosure Figure 1 Vertical Venting with a Metal Chimney System and Inside Air CAUT...

Page 5: ...ical Venting using a Masonry Chimney and Inside Air Figure 3 Horizontal Venting using Inside Air 1 5 FT 0 5 m 1 4 IN PER F00T 20 mm m Table 2 305 TO 457 127 TO 254 VENT PIPE DIAMETER 5 TO 10 12 TO 18...

Page 6: ...2 per 7 000 Btuh 310 mm2 per kW up to and including 1 million Btuh plus 1 in2 per 14 000 Btuh 155 mm2 per kW in excess of 1 million Btuh Intake Air Option General Guidelines This configuration provide...

Page 7: ...ts exhaust and combustion air terminals must be installed on the same plane outside wall in order to prevent pressure differences due to prevailing winds In cold climates double wall or insulated inle...

Page 8: ...d Venting Metal Chimney System Shown Locate exhaust terminal downwind from air intake to reduce potential for flue gas recirculation Figure 7 Combination Air Intake And Venting Masonry Chimney Shown 1...

Page 9: ...ied by installer All venting material must be approved for the application Consult the vent manufacturer s product literature GENERAL VENTING GUIDELINES WARNING The vent installation must be in accord...

Page 10: ...chimneys the connector must terminate flush with the inside of the chimney flue Figure 2 Fasten each single wall vent connection with at least 3 corrosion resistant sheet metal screws WARNING Never i...

Page 11: ...ow unless a 4 ft 1 2 m horizontal distance is maintained from electric meters gas meters regulators and relief equipment and not less than 7 ft 2 1 m from any adjacent public walkway The bottom of the...

Page 12: ...zontale qui conviennent et s assurer que le syst me est exempt d obstruction d tranglement de fruite de corrosion et autres d faillances qui pourraient pr senter des risques c Insofar as is practical...

Page 13: ...r supplies MUST be shut off and the unit and its pump completely drained CAUTION Improper outdoor installation of this boiler water heater can cause boiler failure voiding the manufacturer s warranty...

Page 14: ...t L s kPa 300 34 0 0 22 2 1 0 6 400 45 4 0 49 2 9 1 5 600 68 1 1 30 4 3 3 8 750 85 1 2 35 5 4 6 9 900 102 1 3 84 6 4 11 3 1050 119 1 6 23 7 5 18 4 T 20 F T 11 1 C Model Flow Rate Pres Drop Flow Rate P...

Page 15: ...must be used to prevent the chilled water from entering the boiler When a boiler is connected to a heating coil that may be exposed to refrigerated air from an air handling device the piping system m...

Page 16: ...ation and valving Check with local codes and ordinances for specific requirements Adjustment Procedure To Maintain Inlet Temperature Above Dew Point T1 Temp Min 110 For Atmospheric T1 Temp Min 125 Sea...

Page 17: ...l codes and ordinances for specific requirements Adjustment Procedure To Maintain Inlet Temperature Above Dew Point T1 Temp Min 110 For Atmospheric T1 Temp Min 125 Sealed Combustion 1 Turn heater on a...

Page 18: ...exceeding 350 ppm Water having a hardness less than 8 grains can cause excessive errosion of the heat exchanger Water that has a hardness greater than 18 grains per gallon and or a level of dissolved...

Page 19: ...DOMINATOR INSTALLATION AND OPERATION INSTRUCTIONS Page 19 Table 8A Dominator Heat Exchanger Selection Graph Table 8B Dominator Pumping Performance Requirement...

Page 20: ...he warranty The method outlined below can be employed to prevent this condition from occurring A balancing valve should be installed on the outlet side of the water heater for purposes of adjusting th...

Page 21: ...ion 6 Common piping must be sized for maximum combined heater flow 7 Hot water tanks should be equipped with a combination temperature pressure relief valve 8 MA Code requires an 1 8 hole in check val...

Page 22: ...tom of the vertical section of the gas supply pipe upstream of the gas controls A ground joint union should be installed between the boiler gas controls and the supply piping Each of these items are n...

Page 23: ...hecked to ensure that the correct water level in the tank is maintained The tank should be less than half full of water with the system full and adjusted to the correct operating pressure WARNING Neve...

Page 24: ...r trapped in the heating system piping Close the make up water valve and check and clean the strainers and make up water pressure reducing valve Open the make up water valve and adjust the system pres...

Page 25: ...for as long as the call for heat exists The blower pump and power venter will remain for as long as a call for heat exists On the four stage units the left low fire and high fire switches will interr...

Page 26: ...ls 2 A powered alarm contact 2A max 24 VAC is available to provide an audio or visual indication of faults related only to the staging control s operation This contact is wired to the junction box for...

Page 27: ...be switched or turned off as required Stage 1 will be on first last and whenever the boiler operates NOTE For a change from stage 2 to 3 or 3 to 4 10 second DOM time delays were added to the pressure...

Page 28: ...hones se trouvant dans le b timent Appelez imm diatement votre fournisseur de gaz depuis un voisin Suives les instructions du fournisseur Si vous ne pouvez rejoindre le fournisseur appelez le service...

Page 29: ...cific job site requirements Table 19 Pilot Manifold Settings Table 20 Combustion Readings Instructions De Mise En Marche 1 ARR TEZ Lisez les instructions de s curit sur la portion sup rieure de cette...

Page 30: ...me that it takes to burn 10 ft3 0 28 m3 of gas and divide this time by 10 6 Insert the heating value and the time in seconds into the formula below 7 Input heating value Btu hr 3600 time seconds 8 If...

Page 31: ...ow Adjustment 1 Remove the upper front jacket panel 2 Connect both sides of a manometer to the pressure switch tee Figure 18 going to one of the pressure switches 3 With the unit operating at high fir...

Page 32: ...r flow These time delays are set within the separate time delay board connected to the relay board Gas Pressure Switch An optional low and or high gas pressure switch will shut down the 24V circuit if...

Page 33: ...wired to these terminals In this case the control will temporarily override outdoor reset and increase the target temperature to 180 F 82 C to provide sufficient heat to satisfy the DHW requirement M...

Page 34: ...d impair the boiler water heater s performance Refer to page 39 for component identification CAUTION Improper burner servicing can result in premature burner failure voiding the warranty Burner Inspec...

Page 35: ...nuts and washers holding the upper combustion chamber front panel in place and carefully remove it 9 Carefully slide the heat exchanger out of the unit 10 Remove the V baffle straps and V baffles 11...

Page 36: ...ter at normal system pressure If it does contact a qualified service technician to have it inspected NEVER try to clean or repair the relief valve If the valve fails to operate properly have it replac...

Page 37: ...Venter Power venter contact not wired Wire power venter contact to J box Power venter not wired to Wire power venter as shown in external power connection diagram Relay fault Replace relay Power vente...

Page 38: ...just as necessary Main valve s malfunctioning Replace main valve s Insufficient Heating Target temperature too low Increase stage control target temperature Primary safety high limit set Increase limi...

Page 39: ...DOMINATOR INSTALLATION AND OPERATION INSTRUCTIONS Page 39 Figure 28 Replacement Parts RIOM 22 REV B...

Page 40: ...06 1 1 70 2707 1 1 70 2708 1 1 70 2709 1 1 70 2710 1 1 70 2711 1 1 70 2712 1 1 70 2713 1 1 70 2714 1 1 70 2715 1 1 3 Jacket Left Side Panel 03 1822 1 1 1 1 1 1 1 1 1 1 Jacket Left Side Panel SS 03 182...

Page 41: ...09 1 03 1810 1 Jacket Top Panel SS 03 1801 1 1 03 1802 1 1 03 1803 1 1 03 1804 1 1 03 1805 1 1 03 1806 1 1 03 1807 1 1 03 1808 1 1 03 1809 1 1 03 1810 1 1 Jacket Top Panel Outdoor 70 2969 1 70 2970 1...

Page 42: ...1 1 1 1 1 1 Comb Chamber Lower Right Side Panel 70 2773 1 1 1 1 1 1 1 1 1 1 18 Comb Chamber Upper Left Side Panel 70 2770 1 1 1 1 1 1 1 1 1 1 Comb Chamber Upper Right Side Panel 70 2771 1 1 1 1 1 1 1...

Page 43: ...04 0652 1 04 0653 1 04 0654 1 29 Main Orifice NG 10 0087 3 7 9 11 13 17 19 25 27 Main Orifice LP 10 0088 3 7 9 11 13 17 19 25 27 Main Orifice NG 10 0115 5 Main Orifice LP 10 0116 5 NS Pilot Orifice NG...

Page 44: ...0 1 70 2861 1 70 2862 1 70 2863 1 70 2864 1 70 2865 1 32 Tube Bundle Copper 70 2901 1 70 2902 1 70 2903 1 70 2904 1 70 2905 1 70 2906 1 70 2907 1 70 2908 1 70 2909 1 70 2910 1 Tube Bundle Cupronickel...

Page 45: ...ss 40 0267 1 1 1 1 1 Right Side J3 4 Stage Harness 40 0268 1 1 1 1 1 Power Vent J5 Harness 40 0270 1 1 1 1 1 Power Vent J5 Harness 40 0271 1 1 1 1 1 1 Stage Control J8 Harness 2 Stage 40 0274 1 1 1 1...

Page 46: ...1 1 1 1 1 1 1 1 NS Silicone 66 0151 1 1 1 1 1 1 1 1 1 1 NS Sidewall Vent Kit HS1 12 0009K1 1 Sidewall Vent Kit HS2 12 0010K1 1 1 Sidewall Vent Kit HS3 12 0011K1 1 1 Sidewall Vent Kit HS4 12 0001K1 1 1...

Page 47: ...R PROVIDED VENT STACK CONNECTED PROPER SERVICE CLEARANCE PROVIDED IS VENT VERTICAL THROUGH THE ROOF OUTDOOR AIR SENSOR INSTALLED WIRED IS VENT THROUGH THE WALL ARE UNITS RACKED IS POWER VENT INSTALLED...

Page 48: ...Temp CO PPM Stack Draft Must Be Negative Pilot Signal SAFETY CONTROL CHECK Low Water Cut Off PPM Factory Flow Switch Operating Control High Limit Differential Air Switch STG 1 2 Differential Air Switc...

Page 49: ...izontally vented gas fueled heating appliance or equipment The sign shall read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTRUCTIONS g INSPECTION...

Page 50: ...DOMINATOR INSTALLATION AND OPERATION INSTRUCTIONS Page 50...

Page 51: ...nd erosion on the inside of the heat exchanger tubes caused by high water velocity through the tubes and is not covered by the manufacturer s warranty See Installation Instructions for proper pump per...

Page 52: ...260 North Elm Street 7555 Tranmere Drive Westfield MA 01085 Mississauga Ontario L5S 1L4 Canada Phone 413 568 9571 Phone 905 670 5888 Fax 413 568 9613 Fax 905 670 5782...

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