Nortec GS Series - Manual (Page 54)

51 | GS Series Installation
Undo the 3 screws of the pressure switch support bracket and remove the assembly from the gas valve.
Reverse the sequence above to install the new gas pressure regulating valve. Inspect and replace any
gaskets that may be damaged. When mounting the gas valve/air inlet assembly to the combustion blower,
ensure that the cork gasket is properly oriented or gas flow through the valve will be impeded.
Leak test the gas train before re-commissioning the humidifier.
Air Switch Replacement
Shut off electrical power to the appliance.
Remove right side service panel.
Remove wiring connections to switch.
Remove pressure hose(s) from switch noting proper location.
Remove screws (2) holding the switch.
Reverse above procedure to re-install.
Float Chamber Replacement
Drain the contents of the tank and then shut off electrical power and water supply to the humidifier.
Remove the left front service access door.
Remove the cable connection to the float board.
Remove the hose clamps on the float chamber and remove all hoses (note the correct hose assignment).
Squeeze both sides of the mounting bracket to release it from the slots in the support bracket behind the
float chamber.
Reverse the above sequence to install the new module.
Leak test all water connections before re-commissioning the humidifier.
Figure 36: Air Switch Replacement Figure 37: Float Chamber Replacement