4
WATER CONNECTION
Water supply for the humidifier should be taken from
a nearby hot water line but cold water is acceptable.
All water connections should be made at ground
floor level. Do not use any water line served by a
water softener. If your home has a water softener,
make the water connection up stream of the water
softener. A water softener is not a de-mineralizer. It
merely exchanges various hard-ions for soft-ions in
the water. These soft-ions or minerals, will build up
in the transfer media in the humidifier, causing the
need for more frequent servicing. The evaporation
of softened water may also produce a white powder
which may be carried in to the duct system and
ultimately in to the home. The saddle tapping valve
should be mounted on top of, or on the side of the
water line. If the valve is installed on the bottom of
the water line it could clog with sediment from the
water line. Refer to the instructions on the saddle
valve package and proceed as follows. For copper
water lines the valve is self piercing. Mount the
saddle valve to the top or side of the water line, then
turn “T” handle to the clockwise until it stops to
pierce and seat the valve to the pipe. Open to flush
the valve and close it again. Then connect plastic
water line from the valve to the humidifier making
sure not to kink it or run it near any hot flue pipes.
Connect water line to valve and humidifier with
supplied hardware. Now open the saddle valve turn-
ing the tee handle counter clockwise until fully open.
Check for water leaks and repair as necessary.
Attic installations are not recommended
INSTALL DOOR AND EVAPORATIVE PAD
DRAIN CONNECTION
Make sure the evaporative pad is positioned in the
door correctly. The black mark on the edge of the
pad indicates the top. The pad slides into the door
and rests against the four legs located inside.
Position the bottom edge of the door in the tray
located on the lower opening in the housing. Then
simply push the top of door closed until is has
snapped into place. To remove door just push down
on the two tabs located at the top of the door and pull
the door away from the housing.
Connect the 1/2” plastic tubing to the drain spout
and secure it. The spout is located at the bottom of
the housing. Keep the tubing as short as possible
and avoid sharp bends. The drain line should be
routed on a continous downward slope and into a
suitable drain. WARNING: failure to connect the
drain tubing could result in a flood.
SETTING THE HUMIDISTAT
Most people feel comfortable between 35% to 45%
RH, but the proper relative humidity for your home
depends upon many factors such as outside air
temperature, type, and placement of insulation,
vapor barrier, effectiveness of weather stripping,
type of windows and doors (including frames and
jams), and whether storm windows and doors are
used. With all of these variables it is nearly impos-
sible to recommend a proper humidity setting. The
best humidstat setting is one that you are comfort-
able with. Also, as the outdoor temperature fluctu-
ates, it may be necessary to adjust the humidity
level a few times during the heating season. Refer
to the “Relative Humidity Chart” as a starting point
for your proper humidistat setting. Generally, in a
tighter and better insulated house, the humidistat
may be set higher than in a drafty, uninsulated
house.
Copyright 2007 © , All Rights Reserved
281 Keyes Ave. Hampshire, IL 60140 • 847-683-7990 • Fax 847-683-7301 • www.bestairpro.com
®
®
BESTAIR PRO MODEL GH2500 FLOW-THRU HUMIDIFIER
INSTALL HUMIDISTAT
The BestAir PRO Humidistat should be installed as
described in the installation instructions supplied
with the humidistat.
