FM90 - Field Control® Fresh Mist Central System Humidifier
Freshmist 90
Owners Manual
Installation - water supplyInstallation
WATER SUPPLYNOTE: Tubing must not contact flue pipe or hot air plenum.
- Water for the humidifier must be taken from
a nearby cold water line. Do not use any line connected to an air conditioner.
Turn off the water supply. Drain by opening a faucet at a lower level
of the
line.
- Position the saddle valve on the water line as close to the
humidifier as possible. You have been supplied with 10
feet of 1/4" plastic tubing.
SPECIAL NOTE: When measuring the distance from the saddle valve location to the humidifier, keep in mind that the tubing must be supported; therefore, it must run along ceiling and walls. Measure along the path the tubing will follow.
- Back out the piercing pin by turning the 'T' handle counter clockwise and
then clamp the saddle valve body securely on the water line with rubber gasket
positioned as shown
(Fig. 15). On galvanized or copper pipe over 5/8", first drill a
5/32" hole.
CAUTION: For safety, use a hand drill or grounded electric drill.
- Turn handle clockwise until it has pierced the water line and valve
is completely closed (Fig. 15).
- Partially uncoil the tubing. Slide
the brass
compression nut over the tubing. The threads in the nut must face the
tubing end. Place brass compression sleeve as shown in Fig. 15. Slip
brass insert into
end of tubing.
- Insert the tubing end into the saddle valve at
threaded "A" (Fig. 15) as far as it will go. Thread the brass compression
nut onto the valve, then tighten gently with a wrench. Take care not
to over tighten
the nut.
- Unwind the rest of the tubing. Take care not to kink it. Run the
tubing along flat surfaces to the humidifier. Sup port the tubing as
needed to avoid contact with furnace.
- Close previously opened faucet.
Turn on main water
supply. Place a pail under the end of the tubing. Open the saddle valve.
Flush the line. Make sure there are no leaks along the line or at the
valve. Turn valve
off.
- Complete installation of water supply by first sliding plastic
compression nut onto the water supply tubing. Insert brass insert into
the end of water supply
tubing. Insert the tubing into humidifier valve body, making sure it
is fully seated. Tighten plastic nut securely, finger tight (no wrench)
(Fig. 16).
- Install reservoir, making sure overflow drain is on left side. Install
media wheel. Be sure that media wheel is property engaged with the
media motor and
that media wheel shaft is in groove in plastic bearing (Fig. 17).
- Install float assembly. Place float assembly on valve body; align
hole. Slide pivot pin
through holes to fasten. Float should have slight up and down movement
(Fig. 18).
- Open saddle valve and allow reservoir to fill. Check
water level (Fig.
19). If adjustment is necessary, turn off water and remove float assembly.
See instructions on bottom of float. To raise water level, turn float
clockwise viewing
bottom
of float. Water should be 9/16" below the top edge of the reservoir.
- Lower top cover. Install plastic front cover by inserting top edge up under top cover front flange, with side flanges outside casing. Swing bottom of cover in against case and lower down against flange.
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