Mr. Heater MHVFGH30LPBT - Ventilation Requirements; Confined Space Warning; Establishing Adequate Ventilation; Indoor Ventilation Methods

5
Installation Instructions and Owner’s Manual
Unvented LP-Gas Vent Free Heaters
DETERMINING THE TYPE OF HEATER
LOCATION SPACE:
Note:
-
WARNING:
National Fuel Gas Code, NFPA 54/ ANSI Z223.1,
You must provide additional fresh air. Your options
are as follows:
-
VENTILATION AIR
Ventilation from Inside Building
Ventilation
Gills into
Adjoining
Room -
Option 1
Ventilation Gills into
Adjoining Room - Option 2
12”
12”
Or remove
door into
Adjoining
Room -
Option 3
OUTLET
Figure 2.
Figure 3.