Nortec HP Series - Manual (Page 25)

HP Series Installation Manual | 22
High Pressure Piping
Install high pressure piping between the valve blocks and the HP pump module. The valve
blocks are threaded to accept ½” G fittings. For short runs, it is recommended to install flexible
piping for this purpose. For longer runs use flexible piping at the pump outlet and valve inlet to
minimize vibration transmission. Ensure that flexible piping is rated for pressure and water type
in the application.
Flush piping prior to installation to clear any debris. Debris will inhibit nozzle operation.
Low Pressure Piping
Low-pressure piping should be connected to the inlet of the pump. Ensure that water inlet
pressure is between 20 and 100 psig.
The pump inlet accepts a 3/4” NPT threaded connection. The low-pressure inlet connection
can be a flexible hose or a stainless steel pipe. Stainless steel pipe is recommended for longer
runs of piping, while flexible hose is recommended for shorter runs. If stainless lines are used,
it is recommended to install a length of flexible hose between the metal piping and the pump
inlet to minimize vibration transmission.
Flush low pressure piping with water prior to installation to clear any debris.
A drain line for the pump must also be connected; this line should connect flow to an open-air
funnel or floor drain to prevent backpressure on the pump. Water can also be reclaimed and
returned to the RO or DI system for processing. The pump drain port is threaded to accept a ¼”
NPT connection.
Valve Controller Installation
The valve controller should be located near the pump and valve blocks. Refer to schematics
for valve controller dimensions.
Using suitable screws, mount the control panel at a convenient height on a wall or suitable
structure.
Refer to the spec label on the valve controller; ensure that the voltage matches the electrical
voltage being supplied to it. In most cases this voltage will be 120VAC 60Hz single phase. At
this voltage, the controller draws 2.7A (except high resolution systems). Install a dedicated
disconnect on the electricity source to allow the controller to be isolated.