6 720 220 343
Subject to change without prior notice Revised 07-12
figure #3
step 5:
Mount the self tapping saddle valve or code
valve on either a cold or a hot water pipe. A side or
top mount is best to avoid clogging from pipe
sediment. Connect 1/4” O.D. tubing to the saddle
valve. Copper tubing requires a brass compression
nut and brass sleeve. Plastic tubing requires a brass
insert inside the tubing, a plastic sleeve on the
outside with a brass compression nut. See Figure 4.
Caution
Do not use plastic tubing on hot water or in
contact with any hot plenum surface or duct.
Installation of this saddle valve must meet or
exceed local codes and ordinances.
1
2
2
3
4
5
COPPER
TUBING
PLASTIC
TUBING
figure #4
step 6:
Connect 1/4” water supply tube to brass
filter at inlet of solenoid. See Figure 5.
Caution
Do not use plastic tubing on hot water or in
contact with any hot plenum surface or duct. If
using plastic tubing, use tube support and plastic
compression sleeve.
figure #5
sTeP 7:
Replace the evaporator pad with the drain
pan and distributor trough attached. Ensure that the
drain pan is on the bottom and that the spout aligns
with the outlet in the cabinet. The evaporator pad
assembly can only be installed in one direction.
Ensure that the notch at the top in the distributor
trough goes in first. Do not force the evaporator pad
assembly. If it does not go in easily, it might be
backwards.
sTeP 8:
Replace the humidifier cover, ensuring that
both tabs snap into place.
step 9:
Turn damper knob to the “winter” (open)
position. Turn on water supply and check operation
of humidifier. Set humidistat to a demand setting.
(See Humidistat section for installation and
settings) With the air handler off, the solenoid valve
should be closed. Start the air handler, the solenoid
valve should open when the blower motor is
energized. Check flow of water through distributor
trough and evaporator pad. The standard yellow
orifice will supply approximately 3.5 GPH of water at
a line water pressure of 60 psi. For low water
pressures (20-40 psi) a larger orange orifice (P/N
7738002989) is available to provide the same flow.
Leave humidistat set at the recommended setting.
Connect drain hose to 1/2” spout on humidifier
cabinet using hose clamp. Run 1/2” hose to suitable
drain such as floor drain, sewer or laundry sink. Be
sure hose has continuous slope and is not kinked at
any point.
4 IaQ series
Installation