Hearthstone Quality Home Heating Products, Inc.
Bristol DX Model 8763
24
Convertible regulators are designed to deliver either
of two fixed outlet pressures for Natural Gas (NG) or
LP Gas. To change from one gas to the other, turn
the outlet pressure screw housing
(see Figures 18 &
19)
counter-clockwise to remove.
Be careful not to
engage the small flat slot on the screw itself but
use the larger slot of the screw housing to remove
the unit.
Unsnap and remove the plastic part, rotate
it 180°, and then slide it back on the conversion plug
until it snaps. Reinstall the conversion plug by
screwing it clockwise until it bottoms out. The low
pressure orifice must also be changed (
see Figures
20-25
, pages 24-26).
NOTE: Do NOT adjust and/or alter any component s
mark ed with tamper indicating paint.
To Switch the Valve to LP Operation:
(
Refer to Figures 18-25)
1. Remove the conversion plug from the valve
body.
2. Carefully and without turning the adjusting
screw, grasp the plastic conversion plug at
the end of the pressure screw and remove it
from the shaft by gently pulling away from the
screw head.
3. Flip the conversion plug 180
0
.
4. Slide the conversion plug back on the
pressure screw shaft and gently push until is
clicks in place.
5. Reinstall the screw assembly using only the
outer screw head slot for driving and seat it
fully in the valve.
Figure 18
– GV60 Valve Top
6. Loosen the valve mounting bracket front two
screws and swing the front of the valve
assembly down.
7.
Using a 4mm (5/32”) allen wrench, loosen
and remove the existing low pressure NG
screw by turning counter-clockwise until it
spins freely. It may be necessary to grasp the
screw head with your fingernails or gently pry
it free of the valve body with a small flat blade
screwdriver as the screw has an o-ring at the
top that may gently hold it in the valve body
even after fully loosening
(see Figure 22).
Figure 19 - GV60 LP Conversion Steps
8. Insert the LP low pressure orifice in the
receptacle, press firmly with finger to push o-
ring past threads and tighten using the
enclosed tool. Fully seat the orifice body in
the valve (snug it down until it stops turning
by turning clockwise).
9. Swing the valve mounting bracket back up
into its original position.
10. Tighten the two front mounting screws and
assure valve bracket is firmly held in position.
