Lochinvar Boiler E B N 150 User Manual

High Efficiency,  
Gas Fired  
Heating Boiler  
Taking Comfort and Efficiency to the Next Level  
An Investment You’ll Feel Right at Home with  
Heating your home or business is one of the biggest investments you’ll  
ever make…and you deserve a heating system that delivers unmatched  
comfort, dependability and energy savings, year after year. That’s why  
Efficiency+ from Lochinvar is the smart choice for heating.  
Efficiency+, with inputs ranging from 150,000 to 300,000 Btu/hr, more  
than lives up to its name, with an outstanding 84% AFUE. It has two-  
stage firing that saves fuel by closely matching heat output to system  
demand, maximizing operating efficiency.  
Two-Stage Firing  
During the majority of the heating season less than full boiler input is  
required to satisfy a heat load. For this reason Lochinvar has developed  
a two-stage firing system. Two-stage firing — standard equipment on all  
Efficiency+ boilers —provides dramatic fuel savings by reducing heat  
output 50%. That means when outdoor temperatures become warmer,  
the boiler will use less fuel to maintain comfortable indoor temperatures.  
Efficiency+ is also designed to operate on low gas pressure — a key  
consideration in regions where natural gas supply pressure is in the  
4 - 5 inch range.  
High Fire  
With standard two-stage firing,  
Efficiency+ reduces gas consumption.  
Space-Saving Design  
With Efficiency+, you get high efficiency heating in a surprisingly  
compact unit. It fits easily where other boilers won’t.  
Low Fire  
On colder days the boiler fires  
at full input.  
In warmer conditions Efficiency+  
reduces heat output to save energy  
and reduce cycling.  
The Efficiency+ is remarkably light  
because of its copper tube heat exchanger  
and other design breakthroughs. For  
Stage 2  
Stage 1  
example, Efficiency+ uses Loch-Heat™  
Trouble-Free Operation  
tile to reduce unit weight by 25% as  
There’s nothing more irritating than a boiler that sputters out when you  
need it most. That’s why Efficiency+ has an integrated boiler control  
that ensures safe burner operation and prevents nuisance flame-failures.  
compared to conventional cast refractory  
materials. Loch-Heat tile also increases efficiency by reflecting heat  
back into the combustion chamber rather than absorbing it.  
Thermal Efficiency—Your Reliable Yardstick For Savings  
Thermal Efficiency  
Combustion Efficiency  
Efficiency has an 84% thermal efficiency rating, which means 84 cents out of every fuel dollar are used to create heat.  
+
Other efficiency ratings can be misleading and result in artificially high ratings.  
 

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