Appendix H - Exhaust Terminals And Air Inlet Clearances - Riello Array AR 399 SE Installation, Operation And Service Manual

APPENDIX
RECYCLING AND DISPOSAL APPENDIX

APPENDIX H - EXHAUST TERMINALS AND AIR INLET CLEARANCES

Direct vent (sealed combustion)
1 Forced air inlet
2 Gravity air inlet
3 Exhaust terminal
X1 1 foot (305 mm)
X2 See Note 1)
X3 1 foot (305 mm) USA
3 feet (915 mm) Canada
X4 See Note 1)
X5 7 feet (2135 mm)
YA At least 1 foot (305 mm) above grade or snow line
YB Exhaust terminal must be at least:
3 feet (915 mm) above forced air inlet within
10 feet (3050 mm) horizontally – USA
6 feet (915 mm) above forced air inlet - Canada
It is not recommended to terminate vent above any door or window, condensate can freeze causing ice formations.
Do not use chimney as a raceway if another boiler or fireplace is vented into or through chimney.
All CPVC vent pipes must be glued, except for the flue gas adapter pipe connection.
Vent terminations must keep the following minimum clearances from electric meters, gas meters, regulators and relief equipment: 4
feet (1220 mm) [Canada 6 feet (1830 mm)] horizontally and in no case above and below, unless a horizontal distance of 4 feet (1220 mm)
[Canada 6 feet (1830 mm)] is maintained.
NOTE
1) For Clearances not specified in ANSI Z223.1 / NFPA 54 or CSA B149.1 Clearance in accordance with local installation codes and the require-
ments of the gas supplier including the Authority having jurisdiction.
3
X
3
3
3
X
2
X
3
1
Fan assisted appliance (Room air for combustion)
1 Forced air inlet
2 Gravity air inlet
3 Exhaust terminal
X1 1 foot (305 mm)
X2 See Note 1)
X3 1 foot (305 mm) USA
3 feet (915 mm) Canada
X4 See Note 1)
X5 7 feet (2135 mm)
YA At least 1 foot (305 mm) above grade or snow line
YB Exhaust terminal must be at least:
3 feet (915 mm) above forced air inlet within
10 feet (3050 mm) horizontally – USA
6 feet (915 mm) above forced air inlet - Canada
62 62
3
X
2
2