Nortec SETC Outdoor - Manual (Page 15)

Installation | 12
Plumbing
Note: Use 212ºF (100ºC) rated material for freeze protection drain line
Figure 8: SETC Outdoor Water Supply and Drain Connection
Caution:
 See Plumbing on page 14 of SE Series Installation Manual for additional plumbing
requirements. This Information provided only to show routing and location of
plumbing connections on SETC outdoor model.
 When installing the SETC Outdoor in conditions where freezing temperatures may
occur follow instructions in Freeze Protecting Water Supply on page 13 to prevent
damage in case of power failure or humidifier fault.
 Internal heaters will not keep the SETC from freezing in cold climates. They are
intended to maintain electronics at a minimum operating temperature for cold
weather startup.
Note: The freeze protection valve is normally open and will drain the tank whenever the
humidifier is turned off or faults. Close manual shut off valve while troubleshooting.
Min. 1 1/4 in. OD drain line.
Slope down. Increase size
if combining multiple drains.
Drain Connection
.
0.75 in. (19 mm). OD
un-threaded
Air gap required
2 1/2 in. to 1 1/4 in. copper
reducer is ideal.
Hose/line must not touch
the bottom of the funnel.
Always install a water
shut-off valve. See “Freeze
Protecting Water Supply”.
Fill Connection
1/2 in. male NPT
*Pipe, unions, insulation, heat trace, and water shut-off valve not supplied by NORTEC.
Freeze Protection
Valve Connection
. 1/2 in. male NPT
Fill Valve
Insulate and heat trace
water supply line up to fill
valve if installed where
freezing can occur.
Freeze
Protection
Valve
Pipe
Chase