LAARS Mighty Therm IW (Sizes 500-1825) - Installation, Operation and Maintenance Instructions - Manual (Page 32)

Pump Rotating Sections and Repair Parts
Check pump assembly on heater for H.P. rating and find correct Laars part number from table below.
Description 1/4 HP 1/3 HP 3/4 HP
Pump Rotating Assembly, B&G, 1522 w/3 “ IMP, Bronze, 1P A0048700 —— ——
Pump Rotating Assembly, B&G, Series 90 w/3 “ Impeller, 1P A0077100 —— ——
Pump Rotating Assembly, TACO 1630 w/3 “ Impeller, 1P A0071000 —— ——
Pump Rotating Assembly, TACO 1630 w/4" Impeller, 1P —— A0071200 ——
Pump Rotating Assembly, B&G, 1522 w/4" Impeller, Bronze, 1P —— A0047500 ——
Pump Rotating Assembly, B&G Series 90, w/4" Impeller, 1P —— A0077200 ——
Pump Rotating Assembly, TACO 1630 w/5 “ Impeller, 1P —— —— A0071400
Pump Rotating Assembly, B&G 1522 w/5 “ Impeller, Bronze, 1P —— —— A0047700
Pump Rotating Assembly, B&G Series 90, w/5 “, Impeller, 1P —— —— A0077300
Motor, Pump, B&G 1522 - I P A0054400 A0054800 A0055600
Coupler, Pump, B&G - Universal A0020200 A0020200 A0020200
Bearing Assembly, Pump, B&G 1522 - Universal A0021600 A0021600 A0021600
Bearing Assembly, Pump, B&G 1522, Bronze A0022100 A0022100 A0022100
Gasket, Pump, B&G 1522 - #PW1 -2151 A0021400 A0021400 A0021400
Mounting Ring, B&G 1522 Motors A0065100 A0065100 A0065100
Impeller, B&G 1522 - 3" A0058100 A0058100 A0058100
Impeller, B&G 1522 - 4" A0058200 A0058200 A0058200
Impeller, B&G 1522 - 5" A0058400 A0058400 A0058400
Automatic Reset Temp. Limit Switch ..................................................................................................................... E0014400
Manual Reset High Gas Pressure Switch ............................................................................................................... E0023300
Manual Reset Low Gas Pressure Switch ................................................................................................................ E0023500
Alarm Bell, 110 Volts ............................................................................................................................................... A0014200
Outdoor Reset, Single Stage 30' Bulb ..................................................................................................................... E0067600
Outdoor Reset, Two Stage, 30' Bulb ....................................................................................................................... E0084200
Low-water Cut-off, Electronic, Manual Reset .......................................................................................................... E0067900
Low-water Cut-off, Electronic, Automatic Reset With Test Button ........................................................................... E2024200
Gas valve types and sizes vary with different boiler models, with different fuels and with different firing options. For service and replacement,
copy exact number from nameplate giving manufacturer’s name and pipe size.
SECTION 8. Optional Parts Descriptions and Order Numbers
Energy Management Monitor (EM 2 )
STANDARD COMPONENTS
Description Part No.
On/Off Auto Switch E0109200
Time Delay Relay, 24 VAC E2077700
Time Delay Relay, 120 VAC E2077800
OPTIONAL EQUIPMENT
Description Part No.
Remote Aquastat, 110-240F E0014400
Immersion Well E0025900
Note: The Remote Aquastat and the Immersion Well, when
required, should be ordered separately.
H0105000D
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 0805 Document 2040D