Gree GMV-224WM/B-X, Service Manual

Page: 43 / 375

GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
40
Part 4 Requirements on Foundation
Installation
I. ODU Foundation
The concrete foundation of the ODU must be strong enough. Ensure that the drainage is smooth
and that the ground drainage or floor drainage is not affected.
Requirements on the concrete foundation are as follows:
A. The concrete foundation must be flat and have enough rigidity a
nd strength to undertake the unit‘s
weight during running. The height of the foundation is 200 mm to 300 mm, which is determined
based on the size of the unit.
B. The proportion of the cement, sand, and stone for the concrete is 1:2:4. Place 10 reinforced steel
bars (φ10 mm) with a space between of 30 mm.
C. Use the mortar to flatten the surface of the foundation. Sharp edges must be chamfered.
D. When the foundation is built on a concrete floor, crushed stones are not required. But the foundation
surface must be roughened.
E. Clear the oil stains, crushed stones, dirt, and water in the reserved bolt hole of the foundation and
install a temporary cover before installing bolts.
F. Build a drainage ditch around the foundation to discharge the condensate water.
G. If the air conditioner is installed on the roof, check the intensity of the building and take waterproof
measures.
H. If a u-steel foundation is adopted, the structure must be designed with sufficient rigidity and strength.
Anchor bolt with a nominal
diameter of 12 mm
Minimum width: 100 mm
Proportion of the cement, sand, and
stone for the concrete is 1:2:4.
Drain tank: 100 mm×20 mm
This distance is determined based on the actual size of the unit.
Cement foundation diagram
200 mm~300 mm
30 mm