1 is the low pressure come from inside your house (should feel cold) 2 is the high pressure going into your house (should feel warm0 3 is control signal wire to the board. 4 is the 220V ac that actually runs the compressor. B is called service disconnect, it is to protect the repair men not to get shocked accidentally. If the box is not rust through, you can just remove the rust and paint over, some box use fuse inside, you can just replace them with copper pipe if you want to. http://www.pexsup
【在 g*****9 的大作中提到】 : 1 is the low pressure come from inside your house (should feel cold) : 2 is the high pressure going into your house (should feel warm0 : 3 is control signal wire to the board. : 4 is the 220V ac that actually runs the compressor. : B is called service disconnect, it is to protect the repair men not to get : shocked accidentally. : If the box is not rust through, you can just remove the rust and paint over, : some box use fuse inside, you can just replace them with copper pipe if you : want to. : http://www.pexsup
t*o
15 楼
是啊是啊. 这个是townhouse,有condo association 管,所以不能随便改. 否则我肯定把下面两层木板改水泥了. 怎么处理比较好? 就把那些绿色东西刷掉就可以了么?
The high pressure one #2 going into the house should feel cold instead of warm. That's how cold gets into the house. #1 should be warmer than it because some cold from #2 has been transferred to the house and warm transferred from the house. Thanks for the links. Actually I should get my pipe insulation replaced too because a lot of cold can be lost during transport. The hole on OP's wall where pipe #2 enters should definitely be sealed. I would use expansion foam for that.
【在 g*****9 的大作中提到】 : It is self adhesive, you just cut to length, put on and peel off the plastic : or paper, it will glue itself shut, very easy to do.
【在 C*******d 的大作中提到】 : The high pressure one #2 going into the house should feel cold instead of : warm. That's how cold gets into the house. #1 should be warmer than it : because some cold from #2 has been transferred to the house and warm : transferred from the house. : Thanks for the links. Actually I should get my pipe insulation replaced too : because a lot of cold can be lost during transport. : The hole on OP's wall where pipe #2 enters should definitely be sealed. I : would use expansion foam for that.
t*o
20 楼
谢谢.
plastic
【在 g*****9 的大作中提到】 : It is self adhesive, you just cut to length, put on and peel off the plastic : or paper, it will glue itself shut, very easy to do.
【在 C*******d 的大作中提到】 : The high pressure one #2 going into the house should feel cold instead of : warm. That's how cold gets into the house. #1 should be warmer than it : because some cold from #2 has been transferred to the house and warm : transferred from the house. : Thanks for the links. Actually I should get my pipe insulation replaced too : because a lot of cold can be lost during transport. : The hole on OP's wall where pipe #2 enters should definitely be sealed. I : would use expansion foam for that.
No problem at all. The important part is I should not make any mistake on this since I wrote my doctoral thesis on how to improve HVAC efficiency and I worked as an HVAC engineer for a few years.
【在 g*****9 的大作中提到】 : No problem at all. The important part is I should not make any mistake on : this since I wrote my doctoral thesis on how to improve HVAC efficiency and : I worked as an HVAC engineer for a few years.
s*d
31 楼
防锈不是包泡沫能防的。 外面的防也没有意义,屋里的一定是锈的快。
【在 t*o 的大作中提到】 : 赞.hehe. : 那你说那个热管到底是包(防锈?)好还是不包(多散热?)好啊? : : and
g*9
32 楼
It does not matter that much. The main reason the cold pipe (bigger one) is insulated is because if it is not water will condensate on it and drip down on to area should not get wet and cause other problems. If possible you can wrap them both together, use the cold pipe to help cool down the hot pipe part of the way. If you system is very efficient, the cold return pipe should be just a few degree cooler than the room temp. Most over sized system is not, and the pipe is much colder than the air.
【在 t*o 的大作中提到】 : 赞.hehe. : 那你说那个热管到底是包(防锈?)好还是不包(多散热?)好啊? : : and
C*d
33 楼
Thanks so much again, gezhi! I am very glad to have people like you and sharpdressed to keep on enlightening us.
and
【在 g*****9 的大作中提到】 : No problem at all. The important part is I should not make any mistake on : this since I wrote my doctoral thesis on how to improve HVAC efficiency and : I worked as an HVAC engineer for a few years.