Nortec GS Series - Manual (Page 28)

25 | GS Series Installation
Plumbing
Note: All water supply and drain line connections should be installed in accordance with local plumbing
codes.
Fill Water Supply Line
Each unit is supplied with an adapter for the fill valve (½”NPT). Fill rate 10 l/min all unit sizes. Size of piping
is a minimum ½” copper; recommend ¾” up to within 4 feet of unit.
Standard fill valves are sized for water pressure ranging from 30 to 80 psig (ideally 55 to 60 psig). For other
pressures, consult factory. This pressure should be measured at the humidifier if the water pressure is
suspect.
It is recommended to have a faucet installed close to the humidifier to allow quick filling of the system on
initial start up. This can also be very useful for mandatory cleaning of the unit.
ALWAYS supply and install a shut off valve and union in the water supply line dedicated to the humidifier to
facilitate servicing.
If water hammer occurs, install a shock arrester on the fill water line just before the inlet to the fill valve.
Water hammer will damage the fill valve.
A 1” air gap is designed into the fill system of the GS humidifier. Some local plumbing codes may still
require the installation of a double check valve on the fill line to the humidifier to prevent contamination of
the supply water system. Verify with local codes and install if necessary.
Figure 16: Plumbing Connections