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www.generalfilters.com
Model 570 Humidifier Installation Manual
®
5.
GCV3412 Code Valve Installation Instructions*
Copper Pipe:
1. CAUTION
: Turn off water supply.
2. Clean pipe, fittings and valve with sandpaper or wire brush.
3. Apply a thin layer of flux to all surfaces to be soldered.
4. Assemble valve to pipe and/or fittings.
5. Cooling the valve by wrapping a wetted rag around the valve is optional.
6. WARNING:
For your safety, this should be performed by a licensed contractor
only.
Heat the joints with a torch. Apply solder to each joint. Continue to apply
heat sufficient to keep solder liquid.
7. After solder has filled the entire joint area, remove heat and allow the joint to cool.
Do not move or disturb.
8. Slide compression nut over 1/4” copper tube followed by compression sleeve.
9. Insert tube into valve fully and tighten nut.
10. Turn on water supply and check for leaks.
*Code Valve Is Included With Automatic Models Only
Connect 1/4" water supply tube to brass filter at
inlet of solenoid.
CAUTION
:
do not use plastic tubing in contact
with any hot plenum surface or duct. If using
plastic tubing, use tube insert P189 and plastic
compression sleeve P190 (available as part of
assembly 747-38 tubing kit - GFI #7078).
Installation Cont.
!
!
!
4. 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.
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.
COPPER
TUBING
PLASTIC
TUBING
Plastic
Sleeve
Brass
Insert
Brass
Sleeve
Compression
Nut
6.
Turn the damper knob to the WINTER position. Turn on water supply and check operation of humidifier.
Set humidistat to a demand setting. With the furnace off, the solenoid valve should be closed. Start the
furnace, the solenoid valve should open when the blower or burner circuit is energized. Check flow of water
through distributor trough and evaporator pad. The standard Yellow Orifice GA4231 (GFI #7580) 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 GA4299 (GFI #7581) 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, laundry sink or to a condensate pump
(sold separately). Be sure hose has continuous slope and is not kinked at any point.
1/2” TEE
3/4” TEE
