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Split Inverter Air-to-Water Heat Pump
Install Flare Connections
1. The tapered end of the connection pipe is aligned with the conical surface of corresponding valve connector;
2. Tighten the connection nut firmly with a wrench.
• Connect line set to indoor unit before connecting to outdoor unit. Ensure proper routing of line set to avoid kinks or damage.
• Make sure tightening torque of the nut is in accordance with the following table, otherwise connection may leak;
• Line set is provided with proper insulation. During installation inspect the line set for any rips or tears. If any, please repair using
insulation tape.
Unit Installation
29
Installation Instructions
●
Install Connection Pipe
1.
The taper end of the connection pipe is aligned with the conical surface of corresponding valve
connector;
2. Tighten the connection pip nut firmly with a wrench.
The standard connection pipe is long in 5 meters;
●
Connect the connection pipe first to the indoor unit and then to the outdoor unit;
●
The piping should be carefully arranged so as not to damage the connection pipe;
●
Make sure tightening torque of the nut is in accordance with the following table,
otherwise it will cause leakage;
●
A layer of cotton insulation is added to the outer surface of the connection pipe to
prevent mechanical damage during installation, maintenance and handling of the
heater.
Pipe Dia.
Tightening torque (N·m)
Φ6
15~20
Φ9.52
31~35
Φ12.7
50~55
Φ15.88
60~65
Φ19.05
70~75
Conical
nut
Connect outdoor
unit valve
Connection Pipe Diagram
Unit
fixing;
install
dampin
g device
Apply proper POE oil on flare surfaces
to ensure secure connection. Be sure to
use proper wrenches to tighten all flare
connections.
Flare nut
Lineset
3.8 Line Set Connection Diagram
Line Set Diameter
Tightening Torque (ft-lbs)
3/8"
23-26
5/8"
44-48