ULC 112.1

1 Scope

1.1 These requirements cover dampers intended for use in heating, ventilating and air conditioning (HVAC) systems.

1.2 Leakage-rated dampers (smoke dampers) are intended to restrict the spread of smoke in HVAC systems that are designed to control the movement of smoke within a building when the HVAC system is operational in engineered smoke control systems.

1.3 Combination Fire and Smoke Dampers are intended to restrict the spread of smoke in HVAC systems that are designed to control the movement of smoke within a building when the HVAC system is operational in engineered smoke control systems, and provide a barrier to passage of flame and hot gases. Combination Fire and Smoke Dampers shall meet the requirements of ULC-S112-10, Standard Method of Fire Test of Fire Damper Assemblies and this Standard (see ).

Test

Section

Leakage-rated dampers

Combination fire and smoke leakage dampers

Fire-Endurance and Hose-Stream

1

–

X

Cycling

11

X

X

Salt-Spray Exposure

12

X

X

Spring Closing Force

13

–

X

Dynamic Closure

14

–

X

Duct Impact

15

–

X

Hydrostatic (Actuators)

16

X

X

Temperature Degradation

17

X

X

Leakage

18

X

X

Operation

19

X

X

Mutiple Assembly

20

X

X

Accelerated Aging (Gaskets)

21

X

X

Rigidity

22

X

X