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Model condensing/non condensing storage tanks (select "combo…
Model condensing/non condensing storage tanks
select "combo heating/DHW"
Click on combo heating /dhw tab
Select Energy Source, then Equipment type
Under output capacity select Calculated
Do not change Efficiency defaults
use default flue diameter
Make and model when efficiency is known
fill in tank volume
Select user specified and Enter the EF
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Non Condensing tankless combo with no storage tank
Under type 1 heating, select Boiler
Select fuel source and eqpt type. If it has an EF of less than .9 use induced draft boiler, no pilot
Under output capacity select Calculated, do not change eff or units, use default flue diameter, Make and model if default values not known
Go to DHW section, use same energy source as boiler unless it's a solar system
Tank type, use instantaneous
Enter EF, if known, otherwise use defaults
Select tank location
Enter 0 for flue size
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Condensing or non condensing storage tanks HW combo system
Select Combo heating DHW