Hydrovar Pump Controller Installation & Operation Manual
Hydrovar Pump Controller Installation & Operation Manual
Hydrovar Pump Controller Installation & Operation Manual
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System Design<br />
Section 2<br />
The following diagrams show typical single and multi-pump systems using the HYDROVAR Variable Speed<br />
Drive. Connect directly to water supply. Use of a low suction pressure switch is recommended.<br />
General<br />
NOTE<br />
Systems MUST be designed by qualified technicians only and meet all applicable state and local<br />
code requirements.<br />
CAUTION<br />
Hazardous<br />
Pressure<br />
Single <strong>Pump</strong> Layout Multi-<strong>Pump</strong> Layout<br />
6 7 7<br />
1<br />
4 5 4<br />
8<br />
2<br />
4<br />
9<br />
(1) pump with HYDROVAR (4) gate valve (7) pressure gauge<br />
(2) diaphragm tank (5) check valve or ball valve (8) pressure transducer<br />
(3) fusible disconnect (6) low suction pressure switch (9) pressure relief valve<br />
Note<br />
All plumbing work must be performed by a qualified technician. Always follow all local, state and<br />
provincial codes.<br />
A proper installation requires a pressure relief valve, a ¼" female N.P.T. threaded fitting for the pressure sensor,<br />
and properly sized pipe. Piping should be no smaller than the pump discharge and/or suction connections.<br />
Piping should be kept as short as possible. Avoid the use of unnecessary fittings to minimize friction losses.<br />
Some pump and motor combinations supplied with this system can create dangerous pressure.<br />
Select pipe and fittings according to your pipe suppliers’ recommendation. Consult local codes for<br />
piping requirements in your area.<br />
All joints must be airtight. Use Teflon tape or another type of pipe sealant to seal threaded connections. Use<br />
caution when using thread sealant as any excess that gets inside the pipe may plug the pressure sensor.<br />
Galvanized fittings or pipe should never be connected directly to the stainless steel discharge head or casing as<br />
galvanic corrosion may occur. Barb type connectors should always be double clamped.<br />
5<br />
3<br />
1<br />
6 7 4 5 4<br />
8<br />
1<br />
4 5 4<br />
8<br />
1<br />
4 5 4<br />
8<br />
7<br />
2<br />
9<br />
4