Gree GUHD series - Page 61

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c. Matters of Attention
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The joint of Drainage Pipeline must not have leakage.
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The Drainage Pipeline shall be installed with an inclining angel of 5

10°, so as to facilitate the drainage
of condensate. The joints of the Drainage Pipeline must be covered by thermal insulation materials to avoid
generation of exterior condensate. (As shown in Figure 1-1-10)
Figure 1-1-10
1.1.7 Installation of air duct and round duct for duct-type unit
Caution:
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The supply air duct, the return air duct and the fresh air duct must be covered with a layer of thermal
insulation, so as to avoid thermal leakage and condensation. Firstly apply liquid nail on the duct, and then
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adhesive tape to carefully seal the joints; other good thermal insulation materials can also be used.
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using iron supports. The joints of the pipes must be sealed by glue so as to avoid leakage.
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The design and installation of air duct must be in conformity with the relevant state engineering criteria.
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The edge of the return air duct must be at least 150mm away from the wall. The return air inlet must be
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Silencing and shock absorption shall be considered in the design and installation of the air duct.
Additionally, the noise source must be far away from where people stay. The return air inlet shall not be located
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a. Installation of supply air duct
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Installation of rectangular air duct, as shown in Fig. 1-1-11
Supply air
Return air
1
2
3
4
5 3 6
7
Return air
Figure 1-1-11
Serial No. Name Serial No. Name
1
Hanger rod 5 Filter
2
Return air duct 6 Main supply air duct
3
Canvas air duct 7 Supply air outlet
4
Return air inlet
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Installation of round air duct, as shown in Fig. 1-1-12
2
1
3
4
5
6
7
8 9