Nortec Industries GSTC Outdoor, GSTC Indoor, GSP Indoor manual 10-10, Humidifier Tank, Page

1.WATER MANAGEMENT – BETTER EFFICIENCY THAN EVER A. Introduction

(1)The GS Series of humidifiers is equipped with a unique float chamber water level monitoring device. Two magnetic floats (one is a backup) measure 5 different water levels in the humidifier for proper operation. The float chamber and board are located away from the boiling action to increase reading accuracy and reduce mineral build- up since it is not in the boiling water.

(2)The float chamber is connected to the tank under the water level and above the water level to ensure equalization of pressure between the tank and float chamber. In addition cooling water is introduced in the float chamber to reduce scale build-up.

(3)The unit also includes an internal 1” air gap and a vacuum breaker to prevent siphoning effect.

(4)On initial start-up, the solenoid operated fill valve fills the tank. The water level will reach the backup float first and then the main float. As a safety precaution, if the back-up and main float read a different water level at any time during the operation of the unit, the unit will shut down on a fault.

(5)On initial start-up, the unit will fill to the top yellow position, and activate an internal test to confirm operation of the drain pump to ensure the drain is not blocked.

(6)The drain pump is then activated until the water level goes down to the green middle level, and the combustion sequence will start upon a demand for humidity. During the steam production, the unit will also self-check if the floats and drain pump are operational by activating a drain sequence every 24 hours (adjustable to time of day).

Figure 1. Humidifier Tank

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