Gree FP-170WAF-R

Unit Installation
64
1.2 Materials
 Pipes
The condensate pipe is generally the U-PVC pipe, connected with the special glue. Besides, PP-R
pipes, PP-C pipes and galvanized steel pipes also are selectable, which all are with thread connectors.
 Sheets
Sheets are main materials for ducts, including the galvanized steel sheets, mild steel sheets, and
aluminum sheets etc.
 Galvanized sheets
The galvanized sheet steel is made the general steel sheet Q195 or Q235A coated with zinc.
Generally it is 0.5~1.5mm thick. No paint is required as its coating is corrosion-proof. It is widely used for
the duct system under the moisture environment without acid mist.
See the table for the thickness of the galvanized steel sheets, unless there is special requirement
on the thickness.
Diameter of the round duct or the larger side of the
rectangular duct
（
mm
）
Thickness
（
mm
）
General duct
Return/exhaust duct
δ≤
320
320<
δ≤
450
450<
δ≤
630
630<
δ≤
1000
1000<
δ≤
1250
1250<
δ≤
2000
2000<
δ≤
4000
0.5
0.6
0.6
0.75
1.0
1.0
1.2
0.6
0.75
0.75
1.0
1.2
As designed
As designed