Abstract u112.1_3_20251222_abstract.html1 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 ).
Table 1.1 Various Damper Tests
Test
Section
Leakage-rated dampers
Combination fire and smoke leakage dampers
Fire-Endurance and Hose-Stream
10
–
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