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Ansul systems #8293 03/17/02 05:10 PM
Joined: Feb 2001
Posts: 89
electrician02125 Offline OP

I have a commercial cooking hood protected by a brand new Ansul system. The hood has exhaust as well as make up air fans. The Ansul installer walked away from the job w/o tying in the make up air to his Ansul panel. His panel provides two sets of auxilliary contacts. Both with N/O and N/C options.

My question is this: Is he responsible for NFPA 96 compliance ?

NFPA 96 reads that when the Ansul system discharges the make up air to the hood must shut down. Obviously his panel provides the contacts for this yet he did nothing.

The feed to the contactor is ten feet away from his Ansul panel so tying it into his N/C contacts is easy but how does one go about testing functionality ? Shouldn't the

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Re: Ansul systems #8294 03/17/02 05:15 PM
Joined: Feb 2001
Posts: 89
electrician02125 Offline OP
Part 2

Shouldn't the Ansul installer have tested the entire system including the make up air disconnect ?

Re: Ansul systems #8295 03/18/02 12:21 AM
Joined: Aug 2001
Posts: 599
Nick Offline
I don’t know the particulars of your area but generally the electrician is responsible for the hook up, and testing of the make up air shut down. The ansul system can be tested without discharging the product if coordinated with the ansul installer. Usually all power under the hood must be shut down also.

Re: Ansul systems #8296 03/18/02 07:17 AM
Joined: Dec 2001
Posts: 300
maintenanceguy Offline
I've never had a fire suppression guy that would touch electric or fire alarm. Both of those trades had to come in after work was done to hook up their respective equipment.

But I've also always been told this ahead of time and found it written in the contract before work started.

Re: Ansul systems #8297 03/18/02 08:37 AM
Joined: Feb 2001
Posts: 89
electrician02125 Offline OP
Thank you for your replies.

Re: Ansul systems #8298 03/18/02 06:20 PM
Joined: Dec 2000
Posts: 4,286
electure Offline
Just a suggestion. Use electrically held contactors for the circuits you need to shut down rather than the often suggested shunt trip c/b's. More reliable, easier and less $$.
You'll just use a contact in the Ansul Panel.
Don't know your particular case scenario, but should get a Change Order if it's not shown on the plans.

Re: Ansul systems #8299 03/20/02 07:40 PM
Joined: Feb 2002
Posts: 14
kenrod3020 Offline
french fryers- grills under the hood must shut down when ansul trips .remove four screws on front of panel,with pin in case system is charged.(if cables are running thur the hood and lead link is installed) should be able to pull pin that go in red button on front of ansul panel being careful not to push it in (then un screw co-2 cartrige .you will need contactors for appliance that requires shut-down

Re: Ansul systems #8300 03/20/02 09:00 PM
Joined: Dec 2000
Posts: 4,286
electure Offline
Everything under the hood has to shut down when the Ansul goes.

Re: Ansul systems #8301 03/21/02 06:35 AM
Joined: Feb 2001
Posts: 89
electrician02125 Offline OP
All of my loads under the hood are fed from contactors with common coil feed. The hood has two weatherproof light fixtures underneath it. When you hit the single pole switch to power the lights you simultaneously energize the coils for these motor feeds. I simply need to interupt this switch leg line side with the N/C contacts on the ansul system. My worry is about testing the functioanlity after the fact. I am going to start leaning on this Ansul installer.

Thanks for all of the replies. This forum is a great knowledge sharing resource that makes us all better electricians.

Re: Ansul systems #8302 03/22/02 10:59 PM
Joined: Apr 2001
Posts: 507
golf junkie Offline
"Everything under the hood has to shut down when the Ansul goes."

Is this NEC or building code???


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