Table of Contents
Advertisement
J. Removing Existing Appliance
When an existing appliance is removed from
a common venting system, the common venting
system is likely to be too large for proper venting of
the remaining appliances. At the time of removal of
an existing appliance, the following steps should be
performed with each appliance remaining connected
to the common venting system. Make sure the
appliances are not in operation while carrying out
these steps.
1. Seal any unused openings in the common
venting system.
2. Visually inspect the venting system for proper
size and horizontal pitch and ensure there is
no blockage or restriction, leakage, corrosion,
or other deficiencies which could cause an
unsafe condition.
3. Insofar as is practical, close all exterior doors
and windows, and all doors between the
space where the appliances connect to the
common venting system and other spaces of
the building. Turn on any exhaust fans, such
as range-hoods and bathroom exhausts, so
they will operate at maxi mum speed. Do not
operate a summer exhaust fan. Close fireplace
dampers.
4. Place in operation the appliance being
inspected. Follow the Lighting (or Operating)
Instructions. Adjust thermo stat so appliance
will operate continuously.
5. Test for spillage at the draft hood relief opening
after 5 minutes of main burner operation. Use
the flame of a match or candle, or smoke from
a cigarette, cigar or pipe.
6. After it has been determined that each
appliance connected to the common venting
system properly vents when tested as outlined
above, return doors, win dows, exhaust fans,
fireplace dampers and any other gas burning
appliance to their previous conditions of use.
36
Thermal Solutions, 1175 Manheim Pike, Lancaster, PA 17601 Website: www.thermalsolutions.com
Phone: 717-239-7642 Fax: 877-501-5212 Email: sales@thermalsolutions.com
7. Any improper operation of the common venting
system should be corrected so the installation
conforms with the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 and/or the Natural Gas and
Propane Installation Code, CAN/CSA B149.1.
Resizing of any portion of the common venting
system, should be done in accordance with the
National Fuel Gas Code, ANSI Z223.1/NFPA 54
and/or the Natural Gas and Propane Installation
Code, CAN/CSA B149.1.
K. Special Installation Requirements for Massachusetts
1. For all sidewall horizontally vented gas fueled
equipment installed in every dwelling, building
or structure used in whole or in part for
residential purposes and where the sidewall
exhaust vent termination is less than seven (7)
feet above grade, the following requirements
shall be satisfied:
a. If there is no carbon monoxide detector with
an alarm already installed in compliance with
the most current edition of NFPA 720, NFPA
70 and the Massachusetts State Building Code
in the residential unit served by the sidewall
horizontally vented gas fueled equipment, a
battery operated carbon monoxide detector
with an alarm shall be installed in compliance
with the most current edition of NFPA 720,
NFPA 70 and the Massachusetts State Building
Code.
Advertisement
Table of Contents
