Ansul System

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Alwayslearningelec

Senior Member
Location
NJ
Occupation
Estimator
Any of you guys install/wire one before? It's part of fire protection system and usually in kitchen.
Is it involved on the electrician's part?
 
Electrical is definitely involved.
Among other things all receptacles under the hood, the exhaust fans, and the air make-up fans are controlled by the switches on the Ansul.
On a lot jobs the fan controls are prewired for connection to the system.
For receptacles check your panel schedule for shunt-trip breakers.
 
augie47 said:
Electrical is definitely involved.
Among other things all receptacles under the hood, the exhaust fans, and the air make-up fans are controlled by the switches on the Ansul.
On a lot jobs the fan controls are prewired for connection to the system.
For receptacles check your panel schedule for shunt-trip breakers.
Click to expand...
Thank you. Any wiring to roof hvac equipment usually?
 
Alwayslearningelec said:
New.
Click to expand...
Are there plans from the hood company? That's where you should start.

Some come with a wired control box, some only a pair of micro-switches.

First:
The usual rules are, when there's a system trip:
The exhaust fan must come on or stay on.
The make-up air fan must turn off or stay off.
All electricity under the hood must lose power.
Electric gas valve: exhaust on, gas reset button.
Mech. gas valve: T-stat w/10-minute exhaust.
Horn/strobe or building alarm connection.

Tell me:
1. Are you THE electrician, or are you working under someone?
2. Is this a designed system, with contactors matching the fans?
3. Has anything been run yet, or is construction just starting?
4. Are switches supplied? Which ones? Exhaust, intake, lights?
5. Is there any gas under either hood, or all electric appliances?
6. Are the appliances hard-wired, or are there any receptacles?
7. Is there a building alarm system?
 
Your engineered drawings should show the connection(s) involved.

Larry did an excellent job of showing you what is involved. The amount of field wiring depends a lot on the equipment supplied.
A lot of hoods have a number of the items he listed configured in a control panel.
 
Last edited:
LarryFine said:
Are there plans from the hood company? That's where you should start.

Some come with a wired control box, some only a pair of micro-switches.

First:
The usual rules are, when there's a system trip:
The exhaust fan must come on or stay on.
The make-up air fan must turn off or stay off.
All electricity under the hood must lose power.
Electric gas valve: exhaust on, gas reset button.
Mech. gas valve: T-stat w/10-minute exhaust.
Horn/strobe or building alarm connection.

Tell me:
1. Are you THE electrician, or are you working under someone?
2. Is this a designed system, with contactors matching the fans?
3. Has anything been run yet, or is construction just starting?
4. Are switches supplied? Which ones? Exhaust, intake, lights?
5. Is there any gas under either hood, or all electric appliances?
6. Are the appliances hard-wired, or are there any receptacles?
7. Is there a building alarm system?
Click to expand...
Yes electrician.
No construction started yet.
Yes fire alarm system.
 
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