What does PCB stand for in miner operating temperature range?

[henryvuong]

I am new to mining. Can someone tell me what PCB stand for in this table (Miner normal operating temperature range):

https://support.bitmain.com/hc/en-us/articles/360005088914-Miner-normal-operating-temperature-range

[1715154133]

1715154133

[1715154133]

1715154133

[NotFuzzyWarm]

That should be self-explanatory: Printed Circuit Board.
They are talking about the maximum temperature the PCB is rated to be able safely operate at.

[BitMaxz]

It's a temp of the PCB or the hashboard and the ASIC chip itself has its own temp sensor.

You can use that link as your reference you can find the PCB temp under the miner status.
And this is the sample image below



Temp(PCB) this must be what you talking about. It has a 4 PCB temp sensor as you can see from the image above. Those sensors are under the heat sink look at the image below

[henryvuong]

Thanks for the explanation. So what would be a safe ambient temperature for the miners? In summer when temperature rises to 90+ Fahrenheit how do you keep the miners from overheating?

My friend and I are planning to run some S19 Pro Antminer in his home in Houston, TX. Right now the weather is good for cooling, but in summer the temperature can reach 100+ Fahrenheit, I assume we must install some AC to cool them down? We plan to have up to 10 units in a shed. Do you think running an AC is sufficient?

[BitMaxz]

Thanks for the explanation. So what would be a safe ambient temperature for the miners? In summer when temperature rises to 90+ Fahrenheit how do you keep the miners from overheating?

My friend and I are planning to run some S19 Pro Antminer in his home in Houston, TX. Right now the weather is good for cooling, but in summer the temperature can reach 100+ Fahrenheit, I assume we must install some AC to cool them down? We plan to have up to 10 units in a shed. Do you think running an AC is sufficient?

Just keep monitoring your miner and keep your miner lower than the recommended PCB temp according to the link you provided above.
S19 pro has PCB max. 80c more than that it could melt or damage some parts or ASIC chips.

If you can afford to pay much for Electricity you can install AC but actually, for me, it's not necessary to buy AC if you want to cool them down you should set up your room with proper room airflow you must have an intake fan(Air from outside) then exhaust(to exhaust hot air) you can also separate them hot and cold air you can check the link below as a sample.

- https://bitcointalk.org/index.php?topic=5263722.0

[henryvuong]

80°C is a very high degree to reach, so am I correct to assume that with proper air circulation, you can keep you miners running even in summer when the temperature reaches 38-40°C (100-104°K)?  

[Artemis3]

Yes, that's what they published in their specifications for the original S9, for the modern miners like the S19 they lowered the max ambient temp to 35°C.

What you need to do in summer is move that air. 200~250CFM for S9s and 400~500CFM for the others. And when i mean move, it means fresh air from the outside, into the miners, and then to outside again, without mixing. You can (and should) take advantage of the typical wind direction in your place.

I have seen the S9s work with 40°C ambient temp just fine. Hundreds of them.