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INST 396 Jacuzzi® J-HN Series Heater V12-16 
 
Take the Flue Cover Indoor Insert. 
Take the Flue and FEED it through the 
Indoor Insert. 
Fit flue pipe to appliance (non-sleeved 
end of flue). Fit by sliding it over the flue 
connection spigot as far as possible. 
Slide Indoor Insert Panel down the flue 
and Screw into position with 4 x Screws. 
Pool Heater – Indoor Model. 
Form extra bends where required.  Care 
should be taken when forming bends to not 
create a low point where condensation may 
collect.  Condensation should be able to 
drain to the heater or out the flue outlet.  
The flue should be bracketed at intervals of 1 
M using standard 5” (125 mm) standoff 
brackets available at most plumbing suppliers.