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5 - INSTALLATION AND INSTALLATION CONNECTIONS
- This translates as ΔP22-11 > 0 (for example: P22 = -300 Pa → P11 = -350 Pa)
- Ideally, the minimum value between P22 and P11 should be 20 Pa
- The pressure should be lower at P11 as per the above; if not the case, adjust the damper or dampers present in the return air
duct
5.4 - Maintenance / Space in front of the units
Ideally, for all simple and complex maintenance work (removal of the exchanger, coils, etc.),
sufficient free space should be left at the front to perform these operations:
L = machine length
H = operator height for small models / machine height for Sizes > 6000
l
010
020
700
900
030
040/050
1100
1400
060/075
100
1700
1800
150
2100
31
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