Making Electrical Connections - Thermolec ACU-STEAM User And Maintenance Manual

18.

Making Electrical Connections

NOTE : All internal wiring is done at the factory. All external wiring shall be done by a qualifi ed electrician and
must conform to procedures, regulations and local codes.
18.1 A dedicated breaker in the main panel (or fused disconnect) must be installed.
18.2 The voltage of the available power supply must be the same as the one required by the humidifi er.
18.3 Ensure that the wire size and protection equipment conform to the sizes required by the Electrical
Code.
18.4 Wire according to the wiring diagram supplied in the cover of the unit.
18.5 Adjusting the DIP switches, located on the lower right corner of the circuit board, will change how the
humidifi er handles automatic tank fl ushes. The humidifi er will completely drain and refi ll with fresh water after
a predetermined number of "refi ll cycles". Every time the unit replenishes the tank while producing steam is
counted as one cycle. The table below shows how to set the DIP switches in order to make the unit fl ush the
tank at different intervals. Every 30 cycles equals approximately 5 hours of operation.
NOTE: Cycles are cumulative across humidistat cycles. This means that if the humidistat satisfi es when the
counter is at 15 cycles, the count will resume from 15 upon a new call for humidity. After the number of cycles,
as set by the DIP switches, the tank will drain and refi ll. If there is no call for humidity for 7 consecutive days,
the tank will be drained and wait for future demand from the humidistat.
Switch numbers on top of DIP-switch (not the numbers below the DIP switch)
1
OFF
ON
OFF
OFF
Fan
Relay
FAN
2
OFF
OFF
ON
OFF
G 24V IN
H-STAT A
Fig 18a
3 Cycles Before Tank Flush
OFF
OFF
OFF
ON 30 (DEFAULT)
ON
ON
OFF
1 2 3
A A
Page 22
180
120
60
Fill LED
Drain LED