Propane Conversion; Propane Restrictor Installation - Beckett CG10-24 Manual

Propane Conversion

Explosion, Fire, and
Asphyxiation Hazard
This conversion kit shall be installed
by a qualified service agency in
accordance with the manufacturer's
instructions and all applicable codes
and requirements of the authority
having jurisdiction. (In Canada, in accordance
with the requirements of the CAN/CGA-B149
Installation Code.) If the information in these
instructions is not followed exactly, a fire,
explosion, or production of carbon monoxide
may result causing property damage, personal
injury or loss of life. The qualified service agency
is responsible for the proper installation of this
kit. The installation is not proper and complete
until the operation of the converted appliance
is checked, as specified in the manufacturer's
instructions supplied with the kit.
The Beckett Propane Restrictor Conversion Kit allows for
the conversion of CG10 burners for use with propane
gas. With the proper installation of the restrictor and
attached O-ring, initial adjustments and settings for
propane will be the same as the initial adjustments and
settings for natural gas.
Propane (LP) – When the correct propane restrictor
is added to a burner's gas pipe assembly it changes
the burner's gas pressure drop so that the propane
pressure drop is equal to the natural gas pressure drop
of the same BTU firing rate. That is why the Manifold to
Furnace Pressure Drop curves of Figure 19 and Figure
20 on page 26 are correct for both propane and
natural gas. That is also why the initial burner settings,
Table 8 on page 25, are appropriate for natural gas;
or propane with the correct orifice. R. W. Beckett
provides the same pressure regulating safety shutoff
valve in the gas train for both natural gas and propane.
The valve is marked for natural gas due to its primary
usage in a pressure range normally used by natural gas
appliances. It is safe and effective for propane usage in
this design application.

Propane Restrictor Installation

Note that Steps 1 and 2 on the following page refer to
fully assembled burners. Skip to Step 3 when converting
a burner without the air tube assembly installed.
Refer to Figure 13 and Figure 14 on page 18 when
performing the following steps.
1. Remove the jacking screw (B) from the air tube/
manifold assembly to free the internal gas tube (C).
Burner Manual — CG10-24
Section: PROPANE CONVERSION
Figure 13 – Propane Conversion Major Components
A
B
F
E
2. Gently rock the internal gas tube (C) to loosen the tube
from the union (F).
3. Inspect the O-rings and insure that they are properly
lubricated. (A silicon O-ring lubricant is recommended,
but automotive chassis or bearing grease is an
acceptable substitute.)
4. Referring to Figure 13 , place the restrictor (E) with
pre-attached, pre-lubricated O-ring (G) into the internal
gas tube (C). Use your hand to press the restrictor into
the tube. The O-ring will hold the restrictor in place.
5. Insure that the O-ring (H), attached to the outside
diameter of internal gas tube, is properly lubricated
and seated against the flange on the internal gas tube.
6. Install the internal gas tube (C) back into the air tube
(A) housing, refer to Figure 14 . Fit the end of the tube
into the union (F) on the air tube.
7. Re-install the jacking screw (B). (Refer to the above
notice for installation details.)
8. Fill out and place the supplied Conversion Data Plate
(Part No. 61712) adjacent to the rating plate.
9. Complete and attach the supplied Adjustment Data
Tag (Part No. 61711).
C
H
G
17