Ventilation/construction requirements
Ventilation/construction requirements
(OP)
Thank you in advance!!
Have a client (in house eng)who is installing an enhanced walk in oven. Disagreement over construction standards.
stats:
480v/3ph/6o hz---115 amps-oven
recirculating 7,000 CFM @ 7 1/2 HP fan motor
exhaust-600 CFM @ 1/2 HP fan motor
TEMP- 500 deg F maximum
150 to 350 deg F normal operating temp
75 deg F above ambient minimum.
I suggest single wall spiral (incorporate a high temp flex connection)with a double wall posi vent thru roof with stack terminating +/- 6'-0" above roof line. Exhaust duct would be under positive pressure. This would meet NFPA 70 & 86. verus a welded schedule 40 pipe run (his Idea).
Please comment.
Have a client (in house eng)who is installing an enhanced walk in oven. Disagreement over construction standards.
stats:
480v/3ph/6o hz---115 amps-oven
recirculating 7,000 CFM @ 7 1/2 HP fan motor
exhaust-600 CFM @ 1/2 HP fan motor
TEMP- 500 deg F maximum
150 to 350 deg F normal operating temp
75 deg F above ambient minimum.
I suggest single wall spiral (incorporate a high temp flex connection)with a double wall posi vent thru roof with stack terminating +/- 6'-0" above roof line. Exhaust duct would be under positive pressure. This would meet NFPA 70 & 86. verus a welded schedule 40 pipe run (his Idea).
Please comment.





RE: Ventilation/construction requirements
RE: Ventilation/construction requirements
RE: Ventilation/construction requirements
RE: Ventilation/construction requirements
Depending on local code and your design spec, you could get by with single wall material up to the positive pressure material at the roof. Local codes may require a heavy gauge single wall and extended distance to combustibles.