Lync AEGIS
3: INSTALLATION
L-OMM-012_A
•
4/20/2022
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3.3.1. Recommended Hydraulic Circuit
1.
Union joint: Be sure to install in to enable the unit to be removed for maintenance or replacement.
2.
Thermometer: Be sure to install for capacity check and operation monitoring.
3.
Water pressure gauge: Be sure to install it for checking operation status.
4.
Valve: Be sure to install for cleaning heat exchanger and/or replacing unit.
5.
Flexible joint: Recommended for preventing vibration through system piping.
6.
Strainer (60 mesh or more): Install strainer at inlet port to avoid intrusion of foreign matter into the unit.
7.
Check valves: Must be installed when installing multiple heat pumps.
8.
Air purge valve: install at the highest point in the piping where air may accumulate.
9.
Water piping: Water piping work shall be done by a qualified installer.
10.
Drain valve: Be sure to install in order to drain off the water from the system at servicing.
Figure 3: Recommended Water Piping
3.3.2. Key Considerations For Water Piping
Water quality: It is important to check in advance whether the feed water and hot water have
good quality
.
Be sure to use water within the ranges specified in Section 4.3
Foreign matter in water: If solid matter such as sand piping debris, scale deposits, and/or
floating suspended solids such as corrosion product exist in water, the heat- transfer surface of
heat exchanger is directly attacked by water flow, and corrosion may be created locally. In order
to avoid such corrosion by these foreign matters, be sure to fit a cleanable strainer (60 mesh
/0.25mm or smaller) at the water inlet port of the unit to remove foreign matters.
Contact of dissimilar metals: Depending on the type of metal, certain metals when placed in
contact with each other may cause localized corrosion. Special measures should be taken to
limit corrosion, such as the inclusion of non-conductive materials in between metals
.
Water piping should have no leaks or air intrusion
.
If air is introduced at the suction side of
pumps, the pump may create excess noise and performance may decrease.
For installations exposed to freezing temperatures, take precautions to prevent the freezing of
piping. Note: Aegis A has a freeze protection function, Aegis W does not. In either case it is
recommended to include a proper glycol mixture in the primary loop in the case of power loss.
Contact your glycol supplier for further details on freeze protection.
