Electrical; Control Wiring - Nortec NH Series Installation Manual

G. ELECTRICAL
(1) Primary Voltage Supply Wiring to Humidifier
(a) Local electrical codes should always be followed when installing a NORTEC
Humidifier. Direct wiring to the high voltage terminal is shown in Figure 7.
H. CONTROL WIRING
(1) Controls are available from NORTEC as accessories. If controls were not ordered
with humidifier, they must be purchased or supplied by others. The following
information is relevant to all controls, factory supplied or otherwise.
(a) On-Off Controls
The method and guidelines for installing on/off controls are displayed in
Figure 8. It can be combined with all control methods.
(b) Demand Signal Controls Installation
Figure 9 uses the Nortec optional Controllers to demonstrate the typical
demand signal installation.
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REGARDLESS OF SELECTING ON/OFF OR MODULATING CONTROL
METHOD, NORTEC HUMIDIFIERS MUST HAVE A CLOSED CIRCUIT
ACROSS ITS ON/OFF SECURITY LOOP CONTROL TERMINAL TO
OPERATE. NORTEC HIGHLY RECOMMENDS THE USE OF A HIGH
LIMIT HUMIDISTAT AND AN AIR PROVING SWITCH IN SERIES FOR
THIS FUNCTION.
CAUTION