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What is the whole heat exchange fresh air ventilator?
Depends on the main control panel is not cold and warm, single cold common motherboard. Only a generic motherboard can be changed. In the single cold air-conditioning on the outdoor machine to install the appropriate specifications of the four-way valve, adjust the amount of refrigerant to the appropriate level can be.
I added the space 18 degrees opened for 5 hours or not cold, we all know how is it? More
The general level of more than 12 layers when you need to use.
Air to water heater host and air conditioning host is not the same
This test with a small sample length 127mm, width 12.7mm, the maximum thickness of 3.2mm. In the absence of ventilation test chamber. The top of the specimen (6.4 mm place) is clamped with a clamp on the bracket and the longitudinal axis of the specimen is kept vertical. The lower end of the specimen is 9.5mm from the lamp tip and 305mm from the dry absorbent cotton surface. Bring the Bunsen burner and adjust it to produce a blue flame with a height of 19mm. Place the Bunsen Lights flame at the bottom of the sample for 10s, then remove the flame (at least 152mm away from the specimen) and write down the sample. Burning time. If the flame of the sample within 30s after removal of the flame is extinguished, the original lamp must be moved under the specimen again, re-ignite the sample for 10s, and then remove the Bunsen burner again and note the flame burning And flames burning the burning time. If the sample droplets drip, let it fall into the sample under the 305mm cotton, to see whether it ignited cotton. If the absorbent cotton is on fire, the rating should be taken into account. Specific grading indicators are as follows. Test Item 94V-094V-194V-21 Ten-time ignition Total flame burning time Maximum value (S) Individual flame burning time Maximum value (s) Flameless burning time (s) Yes Flame drop No No Allow only short time Burning general UL yellow card on the thickness of the test strip is divided into: 1/8 inch, 1/16 inch, 1/32 inch thickness, that is, 3.2mm, 1.6mm, 0.8mm three grades test.
Air conditioning machine work when the sound is too much reason
Color steel plate, refers to the color coated steel plate, color coated steel plate is a kind of organic coating with steel plate
HVAC Heating: What are the main components of the air distribution system?
Geothermal construction, the heating pipe spacing can not be less than 100mm, the construction can not be achieved, big brother!
Do 3cm thick wall insulation how much kilogram of slurry and how many kilograms of polystyrene particles
You are talking about the construction measures it is not the house measures it, because the house has a construction of Huohuohuohuo number of leather and bronze sculpture drawings and specifications, high-rise building scaffolding should be lightning protection measures, that is, under the scaffolding around Reliable grounding (not less than four times, not less than 16 square copper core BV line), if it is pick plus, and the house can be connected to the pressure ring. Tower crane I will not say, upstairs has been said.
External wall insulation method of operation There are several combinations of materials
30-150 per square meter has, mainly to see the material, thickness and so on
Air conditioning ventilation when the sound is a big reason
No matter, it is best to cut the distance between the material and the roof, like an arbor. Otherwise it is not foam board with it