Slant/Fin V-33 User Manual

Page 16

ICTORY

APPENDIX A

Removal Of Existing Boiler From Common Vent System

"At the time of removal of an existing boiler, the following

steps shall be followed with each appliance remaining con-

nected to the common venting system placed in operation,

while the other appliances remaining connected to the com-

mon venting system are not in operation."

(a) Visually inspect the venting system for proper size and

horizontal pitch and determine there is no blockage or

restriction, leakage, corrosion and other deficiencies

which could cause an unsafe condition.

(b) Insofar as is practical, close all building doors and win-

dows and all doors between the space in which the appli-

ances remaining connected to the common venting sys-

tem are located and other spaces of the building. Turn on

clothes dryers and any appliance not connected to the

common venting system. Turn on any exhaust fans, such

as range hoods and bathroom exhausts, so they will oper-

ate at maximum speed. DO NOT operate a summer

exhaust fan. Close fireplace dampers.

the lighting instructions. Adjust thermostat so appliance

will operate continuously.

(d) 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.

(e) After it has been determined that each appliance remain-

ing 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.

(f) Any improper operation of the common venting system

should be corrected so the installation conforms with the

National Fuel Gas Code, ANSI Z223.1-latest edition.

When resizing any portion of the common venting sys-

tem, the common venting system should be resized to

approach the minimum size as determined using the

appropriate tables in part 11 in the National Fuel Gas

Code, ANSI Z223.1-latest edition.

APPENDIX B

Vent System Location and Condensation

Drain Requirements

1. The venting system shall terminate at least 3 feet above

any forced air inlet located within 10 feet.

2. The venting system shall terminate at least 4 feet below,

4 feet horizontally from, or 1 foot above any door, window

or gravity air inlet into any building. The bottom of the

vent terminal shall be at least 12 inches above grade

or the normal snow level, whichever is greater.

3. Through the wall vents for Category II and IV appliances

shall not terminate over public walkways or over areas

where condensate or vapor could create a nuisance or

hazard or could be detrimental to the operation of regula-

tors, relief valves or other equipment. Minimum clearance

of 4' horizontally from, and in no case above or below,

unless a 4' horizontal distance is maintained, from electric

meters, gas meters, regulators and relief equipment.

Where local experience indicates that condensate may be

a problem with Category I and III appliances, this provi-

sion shall also apply.

4. Provision shall be made to collect and dispose of conden-

sate from venting systems serving Category I, II, III and

IV appliances.

Caution

Flue gases exiting from the vent terminal will condense.

Building materials in the area of the vent terminal should be

protected from discoloration and degradation.

This manual is related to the following products:

V-180