Installation Instructions

GAS FIREPLACE INSTALLATIONS
1. PRO-FLEX
®
CSST may be used to deliver gas directly to the valve for gas fireplaces. This is approved for
decorative and heat generating fireplaces and for gas logs used in masonry and pre-fabricated fireplaces. DO
NOT use PRO-FLEX
®
to connect gas log lighters or gas wands for use in al-fuel (wood burning) fireplaces.
2. Where it is necessary to install PRO-FLEX
®
through masonry materials in a fireplace construction, the plastic
jacket shall remain intact and the tubing should be routed through sleeving that is appropriate for the applica-
tion. Sleeving is not required through ceramic liners in decorative heat generating fireplaces.
3. Where it is necessary to install PRO-FLEX
®
through sheet metal enclosures such as gas fireplaces and vibra-
tion from motors could cause mechanical wear, the yellow jacket should remain intact and the tubing should
be routed or supported to prevent direct contact with the enclosure. If direct contact cannot be avoided, protec-
tions such as grommets, bushing or armor (Floppy-Flex
™
), PVC tape, shrink sleeve material or a minimum of
four (4) wraps of #10 Mil Duct-Tape should be used. This is to ensure no physical contact will be made
between the metal and the CSST tubing that would cause mechanical wear. Note: Remove yellow jacketing
only on the length of CSST that may be exposed to the flame within the firebox.
REQUIREMENTS FOR PENETRATION TO
FIRE RATED WALLS AND AIR PLENUMS
FIRE STOPS: PRO-FLEX
®
CSST with its polyethylene yellow jacket has been tested to the flame
spread and smoke density requirements of ASTME84 and meets AGA limits imposed for this criteria.
Pro-Flex
®
nonmetallic coating has an ASTME-E84 Flame Spread of less than 25 and ASTM-E84 Smoke
Density of less than 50. Other requirements for the fire rated resistive constructions may be imposed by
local codes. The qualified/trained installer must meet local building codes with respects to flame and
smoke density regulations for nonmetallic materials at all times.
Pro-Flex
®
Tubing shall not be installed within a chase and/or enclosure that includes a metallic appliance
vent and/or metallic chimney liner that protrudes through and/or past the roof unless:
• Permitted by local building code,
• An express separation distance as required by local code can be achieved along the entire length.
• The vent and/or liner is directly bonded to the grounding electrode system, AND
• There is no physical contact between the metallic vent and/or liner and the Pro-Flex
®
tubing along the
entire length of the vent.
27
NOTE: In some configurations, the corrugated tubing (CSST) feeding gas logs or
gas fireplaces can cause a humming or whistle sound. This is due to the gas flow
velocity and can usually be prevented by choosing a larger piping size in accordance
with the chart below.
Suggested Maximum Capacity for Gas/Log Fireplace
TUBING SIZE 3/8" (10 mm) 1/2" (15mm) 3/4" (20mm)
FLOW 1,000 BTU 22,000 45,000 80,000
No Physical Contact
No physical contact Grommet
INSTALLATION WITHIN A CHASE
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