1. Scope
1.1 These requirements apply to natural and liquefied petroleum gas-fired packaged furnaces designed and manufactured primarily for the purpose of building heating.
1.2 These requirements apply to a package furnace having a manufacturer’s maximum input rating within the range of over 400,000 BTUH and up t
1.1 These requirements apply to natural and liquefied petroleum gas-fired packaged furnaces designed and manufactured primarily for the purpose of building heating.
1.2 These requirements apply to a package furnace having a manufacturer’s maximum input rating within the range of over 400,000 BTUH and up t