Electric heat conversion

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nickelec

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I'm going to look at a job tomorrow for a client

He has a 6unit building and is looking to install electric baseboard heaters in place of the old steam system..

Besides the obvious . Service size ,.riser size etc. What should I be looking for

1. How do you even calculate the amount of heat needed I'm assuming kw per sqft

2 . Can anyone recommend a good system with controls/thermostat preferably wall mount

3.im also assuming there's a demand factor for the service as well . I'm looking for that info now as well


Basically Ive installed these plenty of times jsut never for a whole building. Here in NYC it's not common because of harsh winters and old drafty buildings but there's seems to be a trend of landlords getting rid of gas in Total Any tips or pointers would be appreciated

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nick
I would recommend you avoid the heat design, or at least I would. Can you or owner get a equipment rep to run calcs and willing to stand by them. They are going to ask for floor plans, building envelope insulation ratings plus the roof.

In preparation for htg info I would generate a 220 standard calc, you are going to need suite sq ft. When you verify you are over 100a per unit, you can move on to optional calc 220,80. From here you can then move on to 220.84 and work through overall service discounts.

They are getting rid of the steam to save money. Owner paid for the heat most likely and now it is direct to the tenant.

Range in each suite is gas or elect ? I ask because you stated getting rid of gas, or is this just related to htg ?

What about hot water ?
 
nick
Forgot to ask how well you know or trust customer. Where I am headed is you are basically designing this so share no load calc detail, sketches, or drawings just so they can run out and get 10 more guys to price the job.
 
MyCleveland said:
nick
Forgot to ask how well you know or trust customer. Where I am headed is you are basically designing this so share no load calc detail, sketches, or drawings just so they can run out and get 10 more guys to price the job.
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I completely agree with hal also ... Bad idea. I won't be Designing this I'm going to take a look at it tomorrow and see what happens.. I'll update

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mbrooke said:
10 watts of heat per foot.
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Good starting point. Other considerations is age of building, how much insulation, how many windows and doors, north/south exposures, ceiling heights, etc.
If owner has been providing the heat I can definitely understand the desire to put the heating onto the residents. I had a building that was an owner supplied heat and cant tell you how many times I've had tenants that would have the thermostat up and open the windows ("I like the fresh air"). They no longer liked the fresh air when they began paying for the heat when it got changed to each unit having independent heat units and bill.
 
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