Power Wiring; Control Wiring - GeneralAire Elite Steam Manuel D'utilisation

3.5 Power wiring

L1 L2
Fig. 3.o
Fig. 3.q
Power supply
Model (single phase)
DS15 110Vac 50/60Hz
RS15 110Vac 50/60Hz
DS35 230Vac 50/60Hz
RS35 230Vac 50/60Hz
(Since 25A breakers are not readily available in the Canadian market, use a 30A DP breaker.)
3.6

Control wiring

Fig. 3.r
Fig. 3.t Fig. 3.u
Elite Steam +030222075 Rev. 4.0 – 2 Mar. 2015
Check that the power supply voltage to be connected matches the value indicated on
the rating plate inside the electrical panel.
Insert the power and ground connection cables into the electrical panel compartment
using the strain reliefs supplied, and connect to the terminals. An external fused
disconnect must be installed. See Fig. 3.o
All wiring must be in accordance with local, state and national electric codes.
NOTE: to avoid unwanted interference, the power cables should be kept separate
from any control wiring.
Fig. 3.p
Connect power wires to the power terminal block located at the bottom left of the
control module, polarity does not matter. See Fig. 3.p
Connect the ground wire to the unit's chassis ground, located just behind the power
wiring terminal block. See Fig. 3.q
Steam Output Steam Output
(lbs/hr) (kg/h)
5.5 2.5
5.5 2.5
12 5.4
12 5.4
Elite Steam allows connection of any simple or automatic humidistat, and safety
devices such as high-limit humidistat, air flow proving switch, and remote on/off.
The humidifier is operated by the closing of a mechanical humidistat H, or by the
closing of a voltage-free remote contact, or alternatively by a combination of both.
The most common is a combination of a humidistat and pressure switch. The
diagrams in the figures show the connections to be made on the terminal block, in
case of:
Fig. 3.u Operation performed by a simple enabling contact;
Fig. 3.t Operation controlled by an external mechanical humidistat;
Fig. 3.v A combination of both humidistat and pressure switch (most common).
Contact AB-AB:
Fig. 3.s
Fig. 3.v
NOTE: Tolerance allowed on main voltage =-15% to +10%.
POWER CURRENT
(kW) (A)
1.80 16.40
1.80 16.40
3.89 16.95
3.89 16.95
• closed: humidifier enabled to produce steam (production starts when
humidistat closes);
• open: steam production is immediately stopped.
The remote on/off contact is usually a series of external potential-free
contacts that enable the humidifier to produce steam when all of them
are closed, indicating the duct/AHU is ready to accept steam. Connect
the 12500 Pressure Switch NO and C terminals to the AB-AB contacts.
For example,
• fan contact closes when fan is running;
• downstream cooling coil contact closes when coil is off; etc.
Contact IN-GND:
• closed: steam production starts if contact AB-AB is closed
• open: steam production is stopped after 5 sec.
13
EXTERNAL EXTERNAL FUSE (A)
POWER WIRES OR BREAKER
AWG10
AWG10
AWG10
AWG10
25
25
25
25