Gas Supply And Piping - Suburban DynaPack S Series Architects And Engineers' Manual

GAS SUPPLY AND PIPING

Suburban DynaPack A&E Manual 07/2019 Rev.6
GAS SUPPLY
All DynaPack units are built to operate on natural gas. The unit must be
converted using the manufacturers conversion kit in order to operate on
LP gas*.
WARNING! Any conversion of a natural gas unit to liquefied
petroleum (LP) gas* must be done by qualified personnel using
a conversion kit available from the manufacturer, following the
instructions in the conversion kit. If done improperly, over firing
of the burners and improper burner operation can result. This can
create carbon monoxide which could cause asphyxiation.
Minimum gas supply pressure for purposes of input adjustment:
FUEL
Natural Gas
Liquified Petroleum (LP) Gas* (Available for S Series Only)
GAS PIPING
The DynaPack unit has a 1/2" pipe connection for the gas line. The size of the
gas piping must be based on the length of the run and not the connection
size. for reference pipe sizing.
See Table 8
Consult with the local gas utility or code authority for gas piping installation.
If local codes allow the use of a flexible gas appliance connector, always use
a new listed connector. Do not use a connector which has previously serviced
another gas appliance.
The gas piping should contain a manual shut off valve with test port near
the furnace in addition to a drip leg and a ground joint union for servicing.
The test port needs to be upstream of the manual shut off valve for leak testing
and adjusting the supply pressure regulator.
The manual shut off valve must be rated for the gas piping test pressure. If not,
then the shut off valve must be removed from the piping system during
testing. Once the gas piping up to the shut off valve has been tested, the
remaining piping to the unit gas valve must be tested. Do not exceed1/2 psig
or 14" water column for this test or the gas valve may be damaged.
CAUTION: Suburban does not recommend the use of flex tubing to make the
gas connections to the unit unless the flex tubing is a high quality stainless
certified by CSA and approved for use by local code.
*
LP gas available for S Series only.
28
MINIMUM
5" Water Column
11" Water Column
(continued on next page)
MAXIMUM
10" Water Column
13" Water Column