7 Any _mproper operation of the common venting system should be corrected so the installation conforms with the National Fuel Gas Code, ANSI Z223.1
For boilers for connection to gas vents or chimneys, vent installations shall be in accordance with Part 7, Venting of Equipment, of the National Fuel Gas Code, ANSI
Vent connectors serving appliances vented by natural draft shall not be connected into any portion of mechanical draft systems operating under positive pressure.
HT
ROOF
RIDGE
3/4 HT MAXIMUM
'MUST SLOPE UP AT LEAST 1/4 INCH PER FOOT OF
HORIZONTAL RUN
HORIZONTAL INSTALLATION
| FLOW _ |
| NO |
|
|
TO FURNACE | VENT | TO CHIMNEY |
|
|
|
OR BOILER | DAMPER | INSTALL | VENT | DAMPER | WITH |
|
| ACTUATOR | TO SIDES | OF | |
|
| VENT ONLY. DO NOT MOUNT | |||
|
| ABOVE | OR BELOW VENT |
VERTICAL INSTALLATION
TO | CHIMNEY |
|
|
| FLOW | VENT |
|
|
| DAMPER |
|
|
| ACTUATOR | MAY BE |
TO | FURNACE_ | iNSTALLEDIN | ANY POSITION |
OR BOILER | U |
|
C_N: IX) NOT INSTALL
THE VENT DAMPER
WITHIN 6 in. (152 mm) OF
COMBUS33BLE MATERIAL
3HIMNEY
BOILERWATER HEATER
TYPICAL INSTALLA'nON FOR VENT DAMPER
NOTE CAUTION AND FOOTNOTES
1Install the vent damper to service only the single ap_iance for which it is intended,if improperly installed, a hazardous cond_on, such as an explosionor carbon monoxide pe,,sening, could result.
2_ Do not install the vent damper on vent pipecurve.
3Do not run wires near high temperature surfaces. Use staed_ff brackets Jfnecessary
8