Burner Tray Removal - Pentair Pool Products MiniMax NT Series Service Manual

Maintenance -
At some time during the life of a heater, you may
need to inspect and repair the parts of the heater that
allows the gas to flow from the gas supply line into
the burners. If the heater won't fire and you wish to
check these gas controls:
1. Turn off the gas supply.
2. Disconnect the gas union at the heater.
3. Remove the gas pipe installed into the gas
valve.
4. Remove the gas valve holding bracket.
5. Remove the gas valve wires.
6. Disconnect the ignition wire.
7. Slide the burner tray out.
MINIMAX NT (STANDARD) VERSION
MINIMAX NT (LOW NOx) VERSION
P/N NTSM03

Burner Tray Removal

8. You can remove the gas valve if you need to
9. Remove the bracket that holds the burners in
10. Remove each burner and check for any
11. Remove the main burner orifices and check for
If the heater has been off for the winter or has been
installed, but not fired for an extended period of
time, insects will crawl into these orifices and the
pilot orifice and prevent the heater from firing.
You can use this procedure if you have to change
fuel-type—natural to propane or vice versa. The
parts needed to convert the MiniMax NT Series
are: Gas valve, main burner orifices, pilot
orifice and module.
check the inlet and outlet screens. (You will
have to remove the pilot tubing.)
place.
blockages.
MINIMAX NT (LOW NOx) VERSION
MINIMAX NT (STANDARD) VERSION
blockage.
NOTE
NOTE
26
Rev. B 2-11-04