I n s t a l l a t i o n , O p e r a t i o n , & M a i n t e n a n c e M a n u a l
11
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9.
After approximately a five-second delay, the fill valve
energizes and water begins to fill the cylinder to the preset
amp level or cylinder full condition, depending on the
incoming water supply. When starting up the unit, it is best
to put an amp clamp on the power leg that passes through
the toroid transformer. Ensure that the humidifier fills
to “cylinder full” (approximately 1.5” from the top of the
cylinder), or that the amperage reaches the data label
maximum and the fill valve de-energizes.
10. All units are equipped with a drain tempering feature which
mixes cold fill water with the hot drain water to protect drain
piping.
Unit is factory set with drain tempering inactive.
To activate, move drain tempering jumper to ON
position from circuit board.
(See Figure 13.) Depending
on your fill water pressure, some adjustment of the fill
metering valve may be necessary to ensure drain water of
less than 140°F. (See Figure 11.)
11. Reset control and high limit humidistats to their desired
settings. Refer to instructions supplied with humidistat.
NOTE: The capacity of the humidifier can be adjusted be-
tween 50% and 100% of the maximum level by adjusting
the Capacity Adjustment Pot on the main circuit board.
CAUTION!
Inadequate airflow may allow humidity to collect in areas
causing condensation.
Herrtronic
®
Model 6500
CYLINDER FULL
INTERFACE
ELECTRODE
RELAY
FILL VALVE
ADJUSTING SCREW
POWER
TERMINAL BLOCK
TRANSFORMER
24VAC COM
TERMINAL BLOCK
TERMINAL
STRIP
MAIN CIRCUIT
BOARD
AUXILIARY
RELAY
DRAIN SWITCH
COVER INTERLOCK
SWITCH
NOTE: If upon initial start-up of this humidifier the cylin-
der is slow in heating and/or the service light continues
to come on, drain the tank to 1/4 full. Turn off power at
disconnect, obtain some Alka-Seltzer tablets and crum-
ble 1/2 of one tablet (Alka-Seltzer) into the grey fill tee.
Then turn the disconnect on and run the unit. If you have
had to use this step on a 230V unit (6500-2), it is advisable
that you order a GT-176-1 replacement cylinder rather
than the standard replacement cylinder in the future so
this procedure will not need to be repeated.
SECTION IV OPERATING INSTRUCTIONS
Start-up Instructions
1.
Check that the humidifier is properly mounted and level.
2.
Check that the water fill and drain are properly connected.
3. Check that the correct voltage and amperage service are
supplied.
4. Check all controls are wired properly.
5. Check that the steam distributor is properly installed and
that the steam hose has been properly routed without any
kinks or flat spots.
6.
With power OFF, double check all electrical connections
and plumbing connections to insure that they did not loosen
during shipment.
7. With the control and high limit humidistats at their lowest
settings, turn on the main disconnect. The unit should not
begin operation.
8. Turn the control and high limit humidistats up to their highest
setting. The relay should energize.
Figure 11 (View in from Right Side of Unit)
