Ventilation and smoke damper in fire pump room

[Volt Viper]

Hi everyone,

I recently signed up and excited to absorb all the amazing content I can find on this site! Firstly, pardon me if this question already popped up somewhere. The answer might seem obvious to some of your, but this area is totally new to me.

I am working on a fire pump system and trying to understand the wiring required for the fan and smoke/fire damper to activate whenever the diesel fire pump will activate. I can imagine the fan is to evacuate any smoke that is present in the area, but I am unaware if the damper is supposed to remain open at all time except when the fan kicks in, or should the damper remain closed and only opens when the engine and fan are activated. I’ve been trying to find a witing diagram and information regarding if the fan and damper must remain in the new state for a cerrain period of time.

Here is what I am working with:
-Diesel fire pump
-Tornatech GPD control panel
-120V Fan (located on exterior wall)
-Damper (with Belimo NFBUP actuator) located on same exterior wall, about 10’ from fan

From my point of view, I would either run 120V > transformer > 24Vac > GDP controler (Engine Run) > NO aux terminals of a contactor

Then, the same 120V sent to the transformer would be parallelled to the line side of the contactor. from the load side of the contactor, I would sent the power to both the fan and the actuator (damper). One person told me to simply get a combination starter which will include an integrated 120/24v transformer and contactor.

I am guessing that there are different possibilities, therefore I am all ears. Also, are there any online trainings regarding wiring every component of the fire pump and ventilation?

Thanks in advance.

 

[tom baker]

The DFP room I worked on had a spring open motor closed damper and a roof exhaust fan, both controlled thru aux contacts in DFP controller. If power was lost damper would open for combustion air. This was a 1975 design, likely a better system for ventilating room today.
Also get a copy of NFPA 20 on fire pumps, it has really good details that art 695 does not.

Online training? Likely not. Search IAEI journal, trade nags and mfg literature.
NFPA 20 is a must

 

[Volt Viper]

Thanks @tom baker . I am located in Canada so I will take a look at both the NFPA 20 and NFCC.

I find it sad the fact that people have to dig for all this info as if it was gold. Maybe it is gold for those who know how to do it A to Z.