Table of Contents
Advertisement
Cooling layout
The coolant pipes must be connected to the units using pipe flaring.
As indicated in the diagram, a dehydrator filter must be fitted (one or two, depending on model) on the
liquid pipe of the installation.
1. Indoor coil
2. Check valve
3. Expansion valve
4. Service valve
5. Suction accumulator
6. Liquid sight glass
7. Expansion valve
8. Check valve
9. Liquid probe
10. Outdoor air probe
11. Outdoor coil
12. 4-way reversing valve.
13. Discharge probe
14. Compressor
15. Suction probe
16. Dehydrator filter (obligatory in the installation)
Vacuum and dehydrating
The presence of air and dampness in the cooling circuit must be completely eliminated to avoid:
•
Damage to the compressor and other parts of the cooling circuit.
•
A drop in unit performance.
•
Capillary blocking due to freezing.
•
Unwanted high pressure increases.
•
Increased electricity consumption.
N O T E
Prior to the vacuum process, nitrogen gas can be swept through the system to remove most of the
dampness and other contaminants in the cooling circuit. The vacuum should be broken on several
occasions using nitrogen to ensure dampness is eliminated.
The vacuum is ensure in each cooling circuit as follows:
Instructions for installation and connection of the unit
VAH
1
3
2
16
VAC
1
3
16
Quick installation guide
12
13
10
HP
14
LP
15
5
6
4
13
4
14
11
15
6
1
1.5
11
9
8
7
4
10
9
15
Hide quick links:
Advertisement
Table of Contents
