Heating & Cooling

Alliance SL indirect water heater.

Alliance SL Indirect Water Heater

To meet the needs of virtually any residential or commercial property, the Alliance SL indirect water heaters are available in five sizes: 27, 35, 50, 70 and 119. Whether it is a three-story house or a 30-story apartment building, there's an Alliance SL indirect water heater for the job. Trust your equipment needs to the Leffler Energy folks who live and work where you do.

Overview

Key Features

  • Seamless hydrastone-lined tank
  • Great use with any Burnham brand boiler
  • Very low standby heat loss
  • Easy installation and servicing
  • Five sizes available
  • Optional lifetime warranty available



Model
Number
Maximum
First Hour
Rating at 135°F
(gal./hr.)
Continuous
Draw Rating
at 135°F
(gal./hr.)
Standby Loss
(°F/hr.)
Minimum
Boiler Output
(MBtu/hr.)
Boiler Water
Flow Rate
(gal./min.)
Pressure
Dropthrough
Coil
(ft. w.c.)
AL27SL 1921620.97 99 6 9
AL35SL200162 0.72996 9
AL50SL225171 0.56110 69.5
AL70SL294217 0.45120 610
AL119SL*3392350.39 14914 17
Specifications
Model
Number
Storage
Capacity
(gal.)
Height
Dim.
'A' (in.)
Diameter
Dim.
'C' (in.)
Maximum
Allowable
Working
Pressure
Approximate
Shipping
Weight
(lbs.)
AL27SL 2739-1/420 150 PSI 170
AL35SL 3539-1/4 22-3/4 150 PSI198
AL50SL5040-3/4 26150 PSI 248
AL70SL 7045-3/4 28 150 PSI300
AL119SL 11967-3/4 28 150 PSI480

Pricing
Please call us at 877.827.9317 to speak with a qualified representative.

Service
Service is key to maintaining the longevity of your home heating system. With over 20 years of experience, our certified service technicians are all licensed and bonded. From installations of new equipment to tune-ups for existing equipment, our local customer service teams and technicians have everything they need and are always available to help you, whenever you need them, 24/7, all year. The Alliance SL Indirect Water Heater is available with an optional lifetime warranty. Please see your representative for more details. Find out more about our heating equipment Service Plans >

Service Tips

  • Have Furnace Nozzle Cleaned Regularly
  • Pump Should Be Serviced for Draining
  • Clean Chimney Base Connected to the Furnace Ask About Equipment Upgrade Programs