Control Wiring for Make Up Air

	Control Wiring for Make Up Air

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Subject

Author

Date

Control Wiring for Make Up Air

matheson_adam

11-26-2006

Re: Control Wiring for Make Up Air

Stormin Mormon

11-26-2006

Re: Control Wiring for Make Up Air

-Hate

11-27-2006

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Posted by on November 26, 2006, 3:25 pm

I am renovating my kitchen and have added a 600 cfm hood fan. Local
codes required a make up air system to be interlocked with the furnace.
Because I live in Calgary Alberta I was also required to have heated
make up air.

My system consists of a heater and a device that opens and closes.

I need some help on the control wiring for the system. Please note
that I am not planning on doing the 24V wiring myself; I just want to
make sure I understand what I am asking someone to do.

When the hood fan is turned on I need the heater to turn on; the
flapper to open and the furnace blower to engage.

1. Is a current sensing switch (on the dedicated hood fan circuit) the
best way to tell the make up air system to turn on or turn off?

2. Is there a current sensing switch that can control both the 240V
(for heater) and the 24V circuits?

3. Can any electrician do this type of wiring or do I need someone that
specializes in HVAC systems?

Thanks!

Posted by Stormin Mormon on November 26, 2006, 3:48 pm

1. Is a current sensing switch (on the dedicated hood fan circuit) the
best way to tell the make up air system to turn on or turn off?
CY: No, I'd just tap power off the fan, and use that to run a
transformer. Why bother with a current sensing relay when you have 110
volt power?

2. Is there a current sensing switch that can control both the 240V
(for heater) and the 24V circuits?
CY: Why bother? Use a relay since you have the 24 volt signal.

3. Can any electrician do this type of wiring or do I need someone
that
specializes in HVAC systems?
CY: I'd vote for a HVAC guy. Cause the HVAC guy would be more likely
to understand ducts, air flow, filters, and a few other factors.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
.

I am renovating my kitchen and have added a 600 cfm hood fan. Local
codes required a make up air system to be interlocked with the
furnace.
Because I live in Calgary Alberta I was also required to have heated
make up air.

My system consists of a heater and a device that opens and closes.

I need some help on the control wiring for the system. Please note
that I am not planning on doing the 24V wiring myself; I just want to
make sure I understand what I am asking someone to do.

When the hood fan is turned on I need the heater to turn on; the
flapper to open and the furnace blower to engage.

1. Is a current sensing switch (on the dedicated hood fan circuit) the
best way to tell the make up air system to turn on or turn off?

2. Is there a current sensing switch that can control both the 240V
(for heater) and the 24V circuits?

3. Can any electrician do this type of wiring or do I need someone
that
specializes in HVAC systems?

Thanks!

Posted by -Hate on November 27, 2006, 9:26 am

> 1. Is a current sensing switch (on the dedicated hood fan circuit) the

> best way to tell the make up air system to turn on or turn off?

> CY: No, I'd just tap power off the fan, and use that to run a

> transformer. Why bother with a current sensing relay when you have 110

> volt power?

> 2. Is there a current sensing switch that can control both the 240V

> (for heater) and the 24V circuits?

> CY: Why bother? Use a relay since you have the 24 volt signal.

Is it just a coincidence that you posted almost the EXACT WORDS of
PJM less than 10 minutes after he answered the question?

Not only are you a slime.....Not only are you a magic underwear wearing
mormon.....Not only are you a hack of the first water, you are a plagiarist
as well.

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