Laars Mighty Stack MS-080 Operating Instructions Manual Download Page 36

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H2350400-

800.900.9276 • Fax 800.559.1583

(Customer Service, Service Advisors)

20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355

1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130

www.Laars.com

Litho in U.S.A. © Laars Heating Systems 1110 Document 2155

Dimensions and specifications subject to change without notice in accordance with our policy of continuous product improvement.

Summary of Contents for Mighty Stack MS-080

Page 1: ...r death Improper installation and or operation will void the warranty For indoor installations as an additional measure of safety Laars strongly recommends installation of suitable Carbon Monoxide det...

Page 2: ...16 4 4 Combined Water Heating potable and Space Heating 16 4 5 Freeze Protection 16 SECTION 5 Electrical Connections 5 1 Main Power 18 5 2 Field Wiring 18 SECTION 6 Operating Instructions 6 1 Filling...

Page 3: ...in this manual or the Laars Heating Systems warranty may be voided The installation must conform to the requirements of the local jurisdiction having authority and in the United States to the latest e...

Page 4: ...r concealed 1 4 Dimensions See Figure 1 1 5 Locating the Appliance The appliance should be located to provide clearances on all sides for maintenance and inspection It should not be located in an area...

Page 5: ...mensional Data Air and vent connections may be on top or back of the Mighty Stack and are field convertible Size A B C D in cm in cm in cm in cm 199 33 0 84 4 10 5 13 8 75 22 300 39 0 99 4 10 6 15 15...

Page 6: ...m 199 5 13 4 10 4 10 50 15 3 CA003101 CA003201 300 6 15 5 13 4 10 50 15 3 CA003102 CA003201 399 7 18 6 15 6 15 50 15 3 CA003103 CA003202 Table 1 Horizontal Vent Combustion Air Parameters Appliance Su...

Page 7: ...communicating with the outdoors or when communicating to the outdoors through vertical ducts each opening shall have a minimum free area of 1 square inch per 4000 Btu hr 5 5 square cm kW of total inp...

Page 8: ...dered Category III In the U S the National Fuel Gas Code ANSI Z223 1 or in Canada the Natural Gas and Propane Installation Code CSA B149 1 defines a Category I vent system and includes rules and table...

Page 9: ...living spaces common venting should not be applied and appliances should each be vented separately 2 2 4 Category III Vent When the Mighty Stack is vented with horizontal discharge it must be installe...

Page 10: ...non mechanical air supply Direct Vent Only 12 inches 30 cm inlet to building or the combustion air inlet Other Than Direct Vent 4 feet 1 2 m below or 36 inches 91 cm to any other appliance to side of...

Page 11: ...ith alarm and battery back up may be installed on the next adjacent floor level b In the event that the requirements of this subdivision cannot be met at the time of completion of installation the own...

Page 12: ...0 feet 3 0m and high enough above the roof line to prevent blockage from snow When the combustion air is taken from the roof the combustion air must terminate at least 12 30cm below the vent terminal...

Page 13: ...ventilateurs d t Fermer les registres des chemin es 4 Mettre l appareil inspect en marche Suivre les instructions d allumage R egler le thermostat de fa on continue 5 Faire fonctionner le br leur prin...

Page 14: ...Laars Heating Systems Page 14 Figure 4 Venting...

Page 15: ...upply is below sea level values 2 The maximum inlet gas pressure must not exceed 13 w c 3 2kPa The minimum inlet gas pressure is 5 in w c 1 2 kPa 3 Refer to Table 7 size supply 4 Run gas supply line i...

Page 16: ...high enough to prevent scaling but low enough to prevent tube erosion For extremely soft or hard water cupro nickel tubes are available Contact a Laars representative if you have questions or concerns...

Page 17: ...Mighty Stack Page 17 Figure 4 Suggested Plumbing Figure 5 Suggested Plumbing Three Units in first out last...

Page 18: ...ode Canadien de l lectricit 1 re partie Canadian Electrical Code Part 1 CSA C22 1 au Canada N utilisez pas les tuyauteries d eau ou de gaz pour mettre la terre les pi ces m talliques de la chaudi re d...

Page 19: ...Mighty Stack Page 19 Figure 7 Wiring Diagram ON OFF Water Heater...

Page 20: ...tches this 24V from the input 6 4 Sequence of Operation The pump time delay relay will receive a signal to initiate The pump terminals on the field wiring terminals strip will energize a pump Once the...

Page 21: ...mproper setup is not covered by the limited warranty 1 Using this manual make sure the installation is complete and fully in compliance with the instructions 2 Determine that the appliance and system...

Page 22: ...justing the air shutter Contact the Technical Services Department at number shown on back page The amount of derate will vary depending on heating value of the fuel and the elevation at the installati...

Page 23: ...functioning It is strongly recommended that a qualified service technician inspect the basic items listed below every year a Ignition control b Ignitor c Water temperature control d Automatic gas val...

Page 24: ...emove the mounting screws and remove the transformer Replace transformer in the reverse order 7 2 8 Flow Switch The Mighty Stack uses a paddle type flow switch to ensure that the unit has water flow b...

Page 25: ...ion of soot or corrosion on the outside of the heat exchanger can be easily removed Use a wire brush to remove loose soot and scale from the heat exchanger 9 NOTE While the heat exchanger is out of th...

Page 26: ...gnition If the gas supply pressure is proper and the gas valves are functioning properly then burners should be inspected There should be no distortion or perforations in the burners outside of the ac...

Page 27: ...utter Blower 2C5000 2C5000 2C5000 20 Assembly Filter Housing 40L3900 40L3900 40L3900 Assembly Removeable Filter 40L3800 40L3800 40L3800 Media Filter R2073200 R2073200 R2073200 21 Hose Duct Flexible 4...

Page 28: ...r Copper R2C4100 R3C4100 R4C4100 Assembly Tube Heat Exchanger Cupro Nickel R2C4120 R3C4120 R4C4120 2 Header Inlet Outlet 2F4122 2F4122 2F4122 3 Header Return 2C4103 2C4103 2C4103 4 Chamber Header Heat...

Page 29: ...0 E2056300 11 Block Terminal Double Row 16 Position E2327500 E2327500 E2327500 12 Jumper Terminal Block E0102000 E0102000 E0102000 13 Label Terminal Control Contacts H2339100 H2339100 H2339100 14 Harn...

Page 30: ...Laars Heating Systems Page 30 Figure 9 Combustion Chamber Components...

Page 31: ...Mighty Stack Page 31 Figure 10 Jacket Components...

Page 32: ...Laars Heating Systems Page 32 Figure 11 Heat Exchanger Components...

Page 33: ...Mighty Stack Page 33 Figure 12 Gas Train Components...

Page 34: ...Laars Heating Systems Page 34 Figure 13 Control Panel Components...

Page 35: ...Mighty Stack Page 35 Figure 14 Pump Assembly Components...

Page 36: ...603 335 6300 Fax 603 335 3355 1869 Sismet Road Mississauga Ontario Canada L4W 1W8 905 238 0100 Fax 905 366 0130 www Laars com Litho in U S A Laars Heating Systems 1110 Document 2155 Dimensions and sp...

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