Prevent Combustion Air Contamination; Removing A Boiler From A Common Vent System - NTI FTVN085 Installation Start-Up Maintenance

Part 3 - Prepare the Boiler for Installation
WARNING
Do not attempt to vent this appliance by any means other than those
described in this manual. Doing so will void the warranty and may
result in severe personal injury or death.
Approved Carbon Monoxide Detectors: Each carbon monoxide
detector as required in accordance with the above provisions shall
comply with NFPA 70 and be ANSI/UL 2034 listed and IAS certified.
I. Prevent Combustion Air Contamination
Install intake air piping for the boiler as described in the Venting
Section, this manual. Do not terminate exhaust in locations that can
allow contamination of intake air.
WARNING
Ensure that the intake air will not contain any of the contaminants
in Table 6. Contaminated air will damage the boiler, resulting in
possible substantial property damage, severe personal injury, or
death. For example, do not pipe intake air near a swimming pool or
laundry facilities. These areas always contain contaminants.
Products to Avoid
Spray cans containing fluorocarbons
Permanent wave solutions
Chlorinated waxes / cleaners
Chlorine-based swimming
chemicals
Calcium chloride used for
thawing
Sodium chloride used for water sof-
tening
Refrigerant leaks
Paint or varnish removers
Hydrochloric or Muriatic acid
Cements and glues
Antistatic fabric softeners used in
clothes dryers
Chlorine-type bleaches,
detergents, and cleaning solvents
Adhesives used to fasten building
products
Table 6 - Products and Areas Likely to Have Contaminants
NOTE: DAMAGE TO THE BOILER CAUSED BY EXPOSURE TO
CORROSIVE VAPORS IS NOT COVERED BY WARRANTY. (Refer to
the limited warranty for complete terms and conditions.)
J. Removing a Boiler from a Common Vent System
DANGER
Do not install the boiler into a common vent with any other appliance.
This will cause flue gas spillage or appliance malfunction, resulting
in possible substantial property damage, severe personal injury, or
death.
WARNING
Failure to follow all instructions can result in flue gas spillage and
carbon monoxide emissions, causing severe personal injury or
death.
16
Areas Likely to Have
Contaminants
Dry cleaning / laundry areas
and establishments
Swimming pools
Metal fabrication plants
pool
Beauty shops
Refrigeration repair shops
Photo processing plants
Auto body shops
Plastic manufacturing plants
Furniture refinishing areas
and establishments
New building construction
Remodeling areas
laundry
Garages and workshops
When removing an existing boiler, follow the steps below.
1. Seal any unused openings in the common venting system.
2. Visually inspect the venting system for proper size and horizontal
pitch to determine if there is blockage, leakage, corrosion, or other
deficiencies that could cause an unsafe condition.
3. If practical, close all building doors, windows, and doors between
the space in which the boiler remains connected to the common
venting system and other spaces in the building. Turn on clothes
dryers and any appliances not connected to the common venting
system. Turn on any exhaust fans, such as range hoods and
bathroom exhausts, at maximum speed. Do not operate a summer
exhaust fan. Close all fireplace dampers.
4. Place in operation the appliance being inspected. Follow the
lighting instructions. Adjust the thermostat so the 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.
6. After it has been determined that each appliance remaining
connected to the common venting system properly vents when
tested as outlined, return doors, windows, exhaust fans, fireplace
dampers, and any other gas burning appliances to their previous
condition of use.
7. Any improper operation of the common venting system should be
corrected to conform to the National Fuel Gas Code, ANSI Z223.1.
When resizing any portion of the common venting system, the
system should approach the minimum size as determined using the
appropriate tables in Appendix G of ANSI Z223.1.
Figure 7 - CO Warning Label