6. Installation
Air-to-Water Heat Pump _ 8
Part 2. Desing and installation
6.2 Water Piping and Water Circuit Connection
1) General considerations
Followings are should be considered before beginning water circuit connection.
• Service space should be secured.
• Water pipes and connections should be cleaned using water.
• Space for installing external water pump should be provided if internal water pump capacity is not enough for
installation field.
• Never connect electric power while proceeding water charging.
2) Water piping and water circuit connection
Definition of terms are as follow :
• Water piping : Installing pipes where water is flowing inside the pipe.
• Water circuit connecting : Making connection between the unit and water pipes or between pipes and pipes.
Connecting valves or elbows are, for example, in this category.
Configuration of water circuit is shown in 6.3 Installation Scenes. All connections should be complied with presented
diagram.
While installing water pipes, followings should be considered :
•
While inserting or putting water pipes, close the end of the pipe with pipe cap to avoid dust entering.
• When cutting or welding the pipe, always be careful that inner section of the pipe should not be defective. For example,
no weldments or no burrs are found inside the pipe.
• Drain piping should be provided in case of water discharge by the operation of the safety valve. This situation can be
happened when the internal pressure is over 3.0 bar and water inside the unit will be discharged to drain hose.
• Pipe fittings (e.g. L-shape elbow, T-shape tee, diameter reducer, etc) should be tightened strongly to be free from water
leakage.
• Connected sections should be leakage-proof treatment by applying tefron tape, rubber bushing, sealant solution, etc.
•
Appropriate tools and tooling methods should be applied to prevent mechanical breakage of the connections.
• Operation time of flow valve(e.g. 3way valve or 2way valve) should be less than 90 seconds.
• While supplying water, pressure of supplying water should be 2.0 bar approximately.
• Pipe is insulated to prevent heat loss to external environment and to prevent dew generation on the surface of the pipe
in cooling operation.
When the water pipes are connected.
It must be tightened the nut with two wrench.
Otherwise pipes can be deformed.
To Next Page
Loading...
Need help?
General