Standing Pilot; Heat Exchange Return - Regency L390E Owner's Manual

INSTALLATION
The L390E / HZI390E use a heat exchanger and effi cient combustion
technology to provide extreme heating effi ciencies. The more effi cient an ap-
pliance becomes, the lower the fl ue gas temperatures becomes.
On start-up, fl ue temperatures are required to initiate venting action.
Here are some considerations when setting up the L390E / HZI390E:
1) When operating the unit in temperatures below 50° F, run the pilot in
"Standing Pilot" mode, by setting the Surefi re™ switch to ON.
The switch is located to the bottom left of the Firebox Door.
Move the switch to the right to run in Standing Pilot mode, to the left to
run in Intermittent Pilot (electronic ignition) mode. This will aid in keeping
the fl ue slightly warmer than the outside air, making start up a smoother
process.
Standing
Pilot On/Off

HEAT EXCHANGE RETURN

NOTE: Only installed at elevations of 35 feet or higher.
Screw
Heat Exchanger Return
30

STANDING PILOT

Surefi re switch for standing pilot
Heat Exchanger Return
ADDING THE HEAT EXCHANGER RETURN
1) Remove the panels if they are already installed. Remove one screw
in the upper left and upper right of the fi rebox. If the unit has been
previously operated, spray these screws with WD-40. Once the screws
have been removed, lower the front edge of the exhaust baffl e and pull
towards you. There are 3 screws at the rear of the exhaust baffl e that
help to position the baffl e and keep it straight during operation.
2) Install the heat exchange return as shown.
3) Reinstall the exhaust baffl e.
Exhaust Baffle Screws (both sides)
Exhaust Baffle
Screws help to locate
the Exhaust Baffle when
installing in the Firebox
Exhaust Baffle
Exhaust Baffle
L390E-2 / HZI390E-2 Direct Vent Gas Insert