Does anyone have a link to a diagram showing an interlock between a make up air unit model HE221/MV from EngA and a Exaust Fan? I need to interlock the make up air unit with the Fire alarm panel and the CO system in a parkade. I can go through designing my own interlocks using Isolation Modules, Ice cube relays and contactors however I would like to know if there is a diagram already made that would make my life easyer. tx
Diagram of Make up Air Unit
- Thread starter ianis
- Start date
- Status
cadpoint
Senior Member
- Location
- Durham, NC
- Occupation
- Electrician - but not by NC Law.
I think you need to call your local Engineer!
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
There's no single circuit. It depends on a bunch of stuff, such as: one or two switches, direct or contactor control, new or retro-fit, and about 20 different possibilities.
If you like, PM me for my phone number.
If you like, PM me for my phone number.
matty@snake
New member
many curcuits to cut under hood...
many curcuits to cut under hood...
In the restaurant i'm doing, they have added and changed appliances. 6-120v (20 amp curcuits, 1 pole) one of which is for hood ltg. 2-208v (single phase 40 amp 2 pole) 1-208v (3 phase 50 amp). shunt breakers for this are totalling about $1500... I thought using 2 3 pole contactors, 1 4 pole contactor and another 3 pole contactor for the larger 3 phase unit would do... would using seperate enclosures; each with 1 contactor be viable? total of about 150 amps 3 phase to cut out...
Matt
many curcuits to cut under hood...
In the restaurant i'm doing, they have added and changed appliances. 6-120v (20 amp curcuits, 1 pole) one of which is for hood ltg. 2-208v (single phase 40 amp 2 pole) 1-208v (3 phase 50 amp). shunt breakers for this are totalling about $1500... I thought using 2 3 pole contactors, 1 4 pole contactor and another 3 pole contactor for the larger 3 phase unit would do... would using seperate enclosures; each with 1 contactor be viable? total of about 150 amps 3 phase to cut out...
Matt
- Status