22
Mixing Section
When outside and return air mixing is needed, a mixing box section can be selected. The damper on the
mixing box will regulate the amount of outside and return air supplied to the conditioned space. The
proportion of the return air and fresh air depend on the need of the design. In general the amount of return
air is larger than that of the fresh air, so in order to economize the length of the unit, we often put the fresh
air damper on the top of the unit. The damper used for our unit has lower leakage rate at higher static
pressure. It can maximize the energy efficiency.
Dimension of the Mixing Box and Damper
MODEL MDM
AIR FLOW
(m³/h)
L H W A1 A2 B2 D
WEIGHT
(Kg)
0306
2030 640 580 1010 130 90 500 255 124
0308
2908 640 580 1330 190 130 500 415 144
0408
4362 640 740 1330 240 160 600 365 152
0410
5678 640 740 1650 240 160 800 425 170
0509
6693 640 900 1490 250 180 800 425 174
0510
7571 640 900 1650 300 200 800 345 187
0511
8449 640 900 1810 300 200 900 425 197
0610
9464 640 1110 1650 390 260 800 425 206
0611
10561 640 1110 1810 390 260 900 455 216
0612
11659 640 1110 1970 390 260 1000 485 230
0711
12674 640 1270 1810 420 280 1000 380 238
0712
13990 640 1270 1970 450 310 1000 485 256
0713
15307 640 1270 2130 420 280 1200 465 274
0812
16322 640 1430 1970 450 300 1200 385 288
0813
17858 960 1430 2130 500 330 1200 465 408
0913
20409 960 1590 2130 560 375 1200 465 449
0914
22165 960 1590 2290 500 320 1500 395 465
1014
24936 960 1750 2290 550 360 1500 395 500
1015
26911 960 1750 2450 600 400 1500 475 526
1115
29901 960 1910 2450 650 420 1500 475 552
1116
32095 960 1910 2610 580 380 1800 405 578
1216
35305 960 2070 2610 650 430 1800 405 632
1217
37719 960 2070 2770 625 400 2000 385 666
1317
41148 1280 2230 2770 650 450 2000 385 844
1417
44577 1280 2390 2770 740 475 2000 385 880
1518
49734 1280 2550 2770 825 550 2000 465 924
1618
53287 1280 2710 2930 875 575 2000 465 960
1719
60350 1600 2870 3090 900 590 2200 445 1190
1820
67853 1600 3030 3250 1000 680 2200 525 1270
1822
75315 1600 3030 3570 1130 720 2200 685 1330
1825
86507 1600 3030 4050 1150 870 2500 925 1380
1826
90238 1600 3030 4210 1200 800 2500 855 1450
Note: Dimensions in mm
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