The following are being proposed:
1. Revise 7.4 of the Expansion Pressure Test in UL 1479 to add back in the requirements that were inadvertently deleted.
2. Reinstate 7.4.2 of UL 1479 which covers sample size for the Expansion Pressure Test.
3. Reinstate 7.5.2 of UL 1479 which covers sample size for the Expansion Factor Test.
4. Revise the air leakage test method in UL 1479.
5. Revise the furnace pressure control requirements in UL 1479.