e) Complete your connection to the heating appliance following all applicable codes.
Universal Connectors or other terminations:
The universal connector may be connected to the exhaust collar of an appliance following the manufacturer’s fastening specifications.
Universal Take-Off (UTO) Installation
The universal take-off (UTO) may be used when additional gas or oil appliances need to be vented into a Rock-Flex™ liner or when a UTO is
used in place of a standard round tee section on an ovalized, rectangularized or squarized liner. When using a UTO the liner must be at least
1” (25mm) larger in diameter than the diameter of the UTO.
To install a UTO:
a) If none exists, cut a hole in the masonry chimney at the point where the UTO will be installed into the liner.
b) Cut a hole in the liner using the appropriate diameter hole saw (with a pilot drill bit). Make the pilot hole through the liner, then switch the
drill to reverse when cutting the main hole. Press the hole saw into the liner firmly until the hole is cut completely through. Remove the
cutout from the liner.
c) Feed the UTO drawband around the liner and into the turnbuckle. Tighten the drawband firmly around the liner.
d) Apply a bead of high-temp RTV silicone between the UTO and the liner.
Congratulations!
You’ve successfully completed your installation. Please review the maintenance and warranty information with the end-user. Your compliance
with these installation instructions and applicable codes will ensure your customer long-lasting satisfaction. NOTE: As with any venting
system, the performance & safety of Rock-Flex
TM
lining systems is dependent on the use of parts and materials specified in these instructions.
Substitution of unauthorized parts may increase the risk of fire, appliance malfunction, property damage, personal injury or death. All
installations must be in accordance with local codes, NFPA 211 standards, and/or the National Building Code of Canada, and the
manufacturer’s instructions.
Maintenance Instructions
The lining system must be installed and serviced by a qualified chimney or venting professional. The criteria for the inspection and
maintenance must be in conformance with local or state building codes, whichever has jurisdiction. It is recommended you use an inspection
form and make notes that you can review with the homeowner.
Warning For Solid Fuel Applications
Creosote and Soot-Formation and Need for Removal:
When wood is burned slowly, it produces tar and other organic vapors, which
combine with expelled moisture to form creosote. The creosote vapors may condense on the inside of the chimney liner during slow-burning
firing periods. As a result, creosote residue accumulates on the chimney liner. When ignited, this creosote makes an extremely hot fire. The
chimney liner system should be inspected at least once every two months during the heating season to determine if a creosote or soot
buildup has occurred.
If creosote or soot has accumulated, it should be removed to reduce the risk of a chimney fire.
Maintenance Procedures
It is important that the chimney lining system be checked and cleaned annually. This is for the safety of the homeowner and necessary to
meet the warranty requirements of Rock-Flex
TM
. As noted above, in the case of solid fuel burning appliances, more frequent maintenance may
be required, depending on use. The entire system, from the connection at the appliance to the top of the liner, must be completely inspected
and cleaned.
To clean the chimney lining system, the following steps are recommended :
1. Remove cap.
2. Select the proper sized nylon, poly or natural bristle chimney brush to clean the liner. Be sure the brush head passes throughout the
complete length of the liner, including the connectors, terminals and tees.
3. In some instances, proper cleaning will require removing the appliance and disassembling the connector assembly to thoroughly inspect
and clean parts that cannot be reached otherwise.
4. Inspect and clean the chimney cap. Spark arrestors and other screens may be necessary or required in some areas, but may be
susceptible to blockage from creosote or through freezing moisture in areas of low ambient temperature.
5. Reinstall chimney cap.
6. Before the initial firing of the appliance, check the appliance’s operating instructions for initial firing precautions.
Additional Information
1. Rock-Flex
TM
lining systems are intended for use with heating appliances burning home heating oil, natural or LP gas and solid fuels (pellet,
wood, and coal). Use of experimental fuels is not permitted and voids warranty.
2. Use only components listed for use with the Rock-Flex
TM
lining system.
3. For solid-fuels, the chimney liner is not to be sized less than that specified in the appliance manufacturer’s instructions.
4. If not already in place, post notices near the point where the connection is made to the gas vent or roof jack, concerning limitations to use
with either gas or gas and oil appliances only, when a liner is for use with either gas or gas and oil fuel only.
Rockford Chimney Supply, Inc.
www.rockfordchimneysupply.com
1-866-708-2446
Revision 042314