High Limit Humidistat
Remove the jumper tab from ground and in of high limit/pressure switch connections and wire the high
limit stat between these terminals. Refer to Figure10-1 (the overall wiring diagram) for more inform
ation. A duct mounted high limit humidistat is recommended to prevent over-saturation of the duct air.
Use an on-off controller that opens on fault (high humidity). Humidistat should be set for a maximum
of 90% RH. Alternately, a modulating high limit humidistat may be used on applications such as
variable air volume (VAV). Locate the high limit humidistat approximately 3m (10 feet) downstream of
the dispersion manifold. If 3m (10 feet) is not available, consult the factory. Note: High limit humidistat
will be wired in series with duct pressure switch, if used, see Figure 10-1.
Airflow/Pressure Switch
An airflow switch is recommended to deactivate the humidifier when there is insufficient air flow in a
duct system. A duct pressure switch is preferred as an airflow sensor. The pressure switch should
open on insufficient airflow (opens on fault). Airflow switch should be mounted in supply air duct
upstream of humidifier dispersion. Remove the jumper tab from ground and in of high limit/pressure
switch connections and wire the airflow sensor between these terminals. See Figure 10-1 (the overall
wiring diagram) for more information. Complete installation and wiring instructions are contained in the
duct pressure switch package.
Note:
Duct pressure switch will be wired in series with high limit
humidistat, if used, see Figure 10-1.
State light will flash green if either high limit or air pressure switches are open.
Alarm Circuit
The terminals 3 & 4 (normally open relay external alarm) are connections for a class II NEC alarm
circuit (switch closure only, 1 amp. maximum @ 24 Vdc or 0.5 amp. @ 125 Vac). The switch will close
if the unit encounters an error or when service life has expired it will not engage if high humidity/sail
switch circuit is open.
12
Summary of Contents for HumidiClean HC-6100 Series
Page 28: ...HC6100 Wye Wiring layout 28...
Page 29: ...HC6100 Delta Wiring layout 29...
Page 30: ...30 HC6100 PAR Single Phase Wiring Layout...
Page 31: ...HC6300 Wye Wiring layout 31...
Page 32: ...HC6300 Delta Wiring layout 32...
Page 33: ...HC6500 Wye Wiring layout 33...
Page 34: ...HC6500 Delta Wiring layout 34...
Page 35: ...35 HC6500 WYE 2 contactors Wiring Layout...
Page 36: ...36 HC6500 Delta 2 contactors Wiring Layout...
Page 37: ...HC6700 Wye Wiring layout 37...
