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NKV 400х200-4
Parameter | Value | Unit | |
---|---|---|---|
Weight | 8.1 | kg | |
Number of water coil rows | 4 | ||
Rectangular duct size | 400х200 | mm |
![NKV 400х200-4](/images/it/859_schema.gif)
Sizes | B | B1 | B2 | B3 | H | H1 | H2 | H3 | L | L1 | L2 | K |
---|---|---|---|---|---|---|---|---|---|---|---|---|
mm | 400 | 420 | 440 | 565 | 200 | 220 | 240 | 150 | 200 | 38 | 65 | G 3/4'' |
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How to use water heater diagrams:
Air Speed. Starting from 950 m3/h on the air flow scale draw a vertical line 1 till the air speed axis which makes about 3.35 m/s.
- Supply air temperature. Prolong the line 1 up to the point where it crosses the outside air temperature (blue curve), e.g. -15°C; then draw a horizontal line 2 from this point to the left till crossing water in/out temperature curve (70/50 °C). From this point draw a vertical line 3 to the supply air temperature axis on top of the graphic (+29°С).
- Heating coil capacity. Prolong the line 1 up to the point where it crosses the outside air temperature indicated as red curve (e.g., -15°С) and draw a horizontal line 4 from this point to the right to the intersection of water in/out temperature curve (e.g., 70/50 °С). From this point draw a vertical line 5 up to the scale of heating coil capacity (16.0 kW).
- Water discharge. Prolong the line 5 down to water discharge axis at the bottom of the graphic 6 (0.2 l/s).
- Water pressure drop. Draw the line 7 from the point where line 6 crosses the black curve to the pressure drop axis (2.1 kPa).
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