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2
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2answers
78 views

How should I apply ambient air temperature ampacity correction factors when exact temperature is unknown?

Is there a good method or rule of thumb for determining ambient air temperature for wire runs through non-climate controlled areas in residential applications (e.g. attics -- I've read literature from ...
2
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0answers
601 views

What are good Relative Humidity and Temperature settings on an MHRV and are the settings related?

I need to configure the threshold Relative Humidity and Temperature settings on an whole house MHRV system. The way the system works is that if the RH threshold is exceeded the system increases the ...
1
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0answers
17 views

Should I install a doorway fan or dehumidifier?

I have central air in a rancher (one floor), and the living room is on one end of the house. That room is on a slab, and has always been noticeably hotter in the summer and colder in the winter than ...
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0answers
64 views

How do I maximize light gain and minimize heat gain for my glass wall?

How to get maximum benefit of daylight while optimizing air-conditioner benefit for a glass wall (currently) of size 11' * 8' (total 88 square feet exposed). Facts: The glass wall never gets direct ...
1
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0answers
337 views

Can poly plastic water storage tank be used to store hot water?

Another set of questions in context of my home-brew solar water heater: Can poly-plastic water storage tanks, be used to store hot water (140deg F / 60deg C) ? How can I thermally insulate a 50 ...
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0answers
15 views

How to avoid heat when using a dehumidifier?

I bought a Stadler Form Albert. When not in use the RH is 75% nowadays, and 30C. Room is 18m2. If I let it run a couple of hours, it gets down to 50% but at the cost of heating the air to ~35C. ...
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0answers
25 views

New water heater, now shower goes cold if hot water is used anywhere else in the house

We just replaced a 40 gallon water heater, power vent. The plumbing company said upgrading to code was needed for the plumbing of this water heater. We replaced it with an almost identical model, ...
0
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0answers
15 views

Where should the isolation be in a false ceiling?

I am building a false ceiling in plasterboard. I bought some boards for isolation. Where should this be installed? Should I put it next to the roof leaving a air chamber between the plasterboard and ...