Smoke alarms on a single line

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Jul 15th, 2021 11:49 am

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Jul 15th, 2021 9:26 am

pchang [OP]: Newbie; Sep 27, 2009; 69 posts; 16 upvotes; RICHMOND HILL

Jul 15th, 2021 9:26 am

Smoke alarms on a single line

Hi forum

I need some advice here.

I just moved into an older house and need to replace all the smoke alarms (3 in total for each floor) that are all connected on one line.

I have disconnected and removed all the old alarms and ready to install the new ones.

Can I install one at a time and test or do all 3 alarms have to be connected first before I can do my test?

Thanks

5 replies

Jul 15th, 2021 9:35 am

BDSL: Deal Addict; Sep 22, 2009; 3272 posts; 2152 upvotes; Markham

Jul 15th, 2021 9:35 am

What do you mean "connected on one line"?

Jul 15th, 2021 9:40 am

pchang [OP]: Newbie; Sep 27, 2009; 69 posts; 16 upvotes; RICHMOND HILL

Jul 15th, 2021 9:40 am

If I switch off the breaker on the panel, the power is turned off for all alarms.

Jul 15th, 2021 9:42 am

miscbrah1: Sr. Member; Dec 9, 2013; 791 posts; 759 upvotes; Toronto

Jul 15th, 2021 9:42 am

You can install one at a time. Just ensure the breaker is off.

Jul 15th, 2021 10:57 am

insertname2020: Deal Addict; Oct 19, 2020; 1047 posts; 673 upvotes; GTA

Jul 15th, 2021 10:57 am

pchang wrote: ↑ Hi forum

I need some advice here.

I just moved into an older house and need to replace all the smoke alarms (3 in total for each floor) that are all connected on one line.

I have disconnected and removed all the old alarms and ready to install the new ones.

Can I install one at a time and test or do all 3 alarms have to be connected first before I can do my test?

Thanks

Just about all hard-wired alarms have battery backup.

You can put in/enable the battery and test each unit before putting it up.

When all of the alarms are up, be sure to test the interconnect; when one is tested, they should all go off.
This is, if you have an interconnect wire in the circuit.

The alarms can work stand-alone.

Hvac advice warning - inaccurate information on forum, vested interests in selling builder's equipment. Selling dealer-only brands without being authorized is a red flag. Report to CRA if offered no tax cash-deal. If it's 2 good to b tru, it is.

Jul 15th, 2021 11:49 am

pchang [OP]: Newbie; Sep 27, 2009; 69 posts; 16 upvotes; RICHMOND HILL

Jul 15th, 2021 11:49 am

Thanks guys for all of your inputs.

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