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G. removing a boiler from a common vent system – HTP 850 LPHL User Manual

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13

LP- 205 REV. 3.28.14


PRODUCTS TO AVOID

AREAS LIKELY TO HAVE CONTAMINANTS

Spray cans containing fluorocarbons

Dry cleaning/laundry areas and establishments

Permanent wave solutions

Swimming pools

Chlorinated waxes/cleaners

Metal fabrication plants

Chlorine-based swimming pool chemicals

Beauty shops

Calcium chloride used for thawing

Refrigeration repair shops

Sodium chloride used for water softening

Photo processing plants

Refrigerant leaks

Auto body shops

Paint or varnish removers

Plastic manufacturing plants

Hydrochloric or Muriatic acid

Furniture refinishing areas and establishments

Cements and glues

New building construction

Antistatic fabric softeners used in clothes dryers

Remodeling areas

Chlorine-type bleaches, laundry detergents, and cleaning solvents

Garages and workshops

Adhesives used to fasten building products

Table 1

– 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).

G. REMOVING A BOILER FROM A COMMON VENT SYSTEM

Do not install the boiler into a common vent with any other boiler.
This will cause flue gas spillage or boiler malfunction, resulting in
possible substantial property damage, severe personal injury, or
death.

Failure to follow all instructions can result in flue gas spillage and
carbon monoxide emissions, causing severe personal injury or
death.

When removing an existing boiler, the following steps must be followed.

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 all doors between 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 common venting system properly vents when tested as
outlined, return doors, windows, exhaust fans, fireplace dampers and any other gas burning appliance to their previous condition of use.

7. Any improper operation of the common venting system should be corrected so the installation conforms to the National Fuel Gas
Code, ANSI Z223.1
. When resizing any portion of the common venting system, the common venting system should be resized to
approach the minimum size as determined using the appropriate tables in Appendix G in the National Fuel Gas Code, ANSI Z 223.1.


Figure 4

– CO Warning Label

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