Brochure

There can be extensive demands for domestic (potable)
hot water in both residential and commercial applications.
Alliance LT and SL indirect-fired water heaters meet the
need for domestic hot water with unique designs and
uncompromising reliability.
Indirect Water Heaters vs.
Conventional Direct-Fired Water Heaters
All “tank” water heaters store hot water to be used for
household needs. A conventional direct-fired tank uses a
34,000 BTU heat source. By comparison, a similar indirect
tank uses over 100,000 BTUs of boiler power! With its
vastly greater heating capacity, an indirect water heater
can actually create hot water faster than it leaves the tank.
Your supply of hot water is virtually limitless!
Alliance
™
Indirect Water Heaters
A Lifetime of Abundant
Domestic Hot Water
Supply To Heating System
Return
From
Heating
System
Supply To Indirect
Return
From
Indirect
Hot Water Supply to Home
Cold Water Supply
How it Works
Cold domestic water entering the tank is
heated as it is diffused across the surface
of a uniquely designed heating coil. This
heating coil contains hot water circulated by
the boiler. An external control monitors tank
water temperature for comfort and efficiency.
Not Created Equal
Indirect water heaters come with several
kinds of tank lining. Alliance is available as
Thermoplastic (LT) or Hydrastone Lined (SL).
Both have distinct advantages over other
types of tank lining:
Alliance
Indirect
Water Heater
Boiler
Glass-Lined Tanks
– Defects in glaze can expose tank
to premature failure
– Sacrificial anode rod required
– Regular maintenance required
– Sensitive to high temps
Stainless Steel-Lined Tanks
– Sensitivity to chlorides in
domestic water can lead to
shortened lifespan in some areas
– Construction welds become
structural weak points on non-
passivated tanks
Alliance LT (thermoplastic) &
Alliance SL (hydrastone)
✓ Seamless construction
✓ No anode rod/replacement needed
✓ Minimal maintenance
✓ Withstands all water conditions
✓ Tolerates high temp & pressure