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Page 29
2008-08-28
Table 1. NHTC/NHPC Components
Item Number Component Name Description
1 Steam Connector Used to allow easy replacement of cylinders without disconnecting
the steam line.
2 Condensate Return This inlet is to return condensate to the unit.
3 Fill Cup The fill cup allows isolation from the fill line by supplying an air gap.
It will also overflow any water that cannot enter the cylinder to drain.
4 Float Chamber (Optional) Detection OPTION – Used with the advanced foam detection
setting.
5 Manual Drain Button By pushing this button, manual drain is initiated with software
support. Software support supplies drain cooling if enabled and will
disable manual drain after 10 minutes.
6 Door Interlock The door interlock prevents the unit from running when the front
door is off. For startup and troubleshooting, pulling this interlock will
overide this safety feature.
7 Back-up Drain Back-up drain switch allows the draining of the cylinder without
electronic support.
8 Fill Valve The fill valve allows water to flow up to the fill cup. In units with
Drain Water Cooling to 120 degrees option, this valve is a dual
valve. The second valve is wired in parrallel with the drain valve to
quench the water with fresh cold water everytime the drain is
activated.
9 Drain Canal The drain canal allows all drainable water to accumulate into one
location to then be drained away.
10 Drain Valve Drain valve when energized will allow water to flow down to the
drain canal. When not energized, water flowing from the fill cup will
flow up into the cylinder.
11 Transformer The transformer converts the primary supply voltage to the required
24 VAC to the unit electronics. It is protected by a fuse to ensure
that the 24 VAC electronics are protected from surges or shorts.
12 On/Off Switch Turns the unit power on and off. Be aware that high voltage will still
enter the unit even though the 24VAC electronic are disabled. The
contactor will not be energized. Main shut-off should be open before
any servicing is performed.
13 Graphical Display and Menu
Buttons
The graphical display and buttons are used to navigate through the
software. Use software flowchart as a reference.
14 Remote Relay Board (Optional) The remote relay board is a set of 4 dry contacts, rated for 24 VAC
1A, which activate in conjunction with humidifier on, steam
production, service and error conditions.
15 NORTEC Cylinder The NORTEC disposable cylinder contains electrodes that become
energized when the contactor is closed. This allows current to pass
through the water from one electrode to another, generating heat
within the water. The water then boils and the output is clean pure
steam.