Converting To Lp Or Natural Gas - OCI OCIE48EH Installation & Operation Manual

Converting to LP or Natural Gas

Converting to LP or Natural Gas:
In order to change your heater to Natural Gas from LP or vice versa you will
need to change three parts as well as change the gas setting on the fuel control:
1. Main Orifice
2. Pilot Flame level adjustment
3. Minimum Rate screw
4. Gas setting on fuel control
Warning: Using LP gas on the Natural Gas setting on the fuel control can
cause great injury to self as well as to your heater unit. Double check that you
have the gas setting on the appropriate setting for the gas that you are using.
Caution: If you do not feel confident in performing any of these steps contact a
licensed plumber or appliance tech. to do the conversion for you.
Step 1: Remove the control access panel located on the side of the heater
using a phillips screwdriver. Locate the Brass main orifice fitting at the root of
the burner. Using a 1/2" open end wrench remove the orifice fitting and replace
it with the #50 if you are converting to LP or the #35 if you are converting to
Natural Gas.
Step 2: Remove the Stepper motor that looks like a square box with the wires
attached on the bottom of the control with a flat head screwdriver. Lay aside
without damaging wires. Locate the Minimum Rate orifice under where the
Stepper motor mounts. Remove the minimum rate orifice with a flat head
screwdriver. Install the LP or Natural gas minimum rate orifice being careful not
to damage the o-ring attached. Re-install the stepper motor being sure to tight-
en proportionate to previous torque.
PILOT ADJ. LOW SETTING
SCREW ORIFICE
STEPPER
MOTOR
17
GAS SELECTOR SCREW