GeneralAire DS50 LC Elite Steam - Manual (Page 16)

DS 50 / DS 50 LC +030222065 Rev. 1.2 16
3.6.1 Connect the GFX50 Humidistat for Modulating operation
Connect Elite Steam terminals 24V and GND to GFX50 terminals GO5 and G6
respectively. Do not reverse these connections. Connect GFX50 terminal A OUT 6
to Elite Steam terminal IN. See fig. 3.t.
NOTE:
1. MODULATING OPERATION requires Elite Steam signal type be changed,
SEC. 5.1.1 page 19
2. The GFX50 is capable of ON-OFF operation. See the GFX50 manual.
3. The GFX50 is capable of Outdoor Temperature Compensation see the
GFX50 manual.
4. The GFX50 is designed to wall mount. It is not intended for duct
installation.
5. Reversing the 24V and GND leads will result in humidifier malfunction.
3.6.2
Connect the E2 Humidistat ON-OFF Operation
Connect Elite Steam terminals 24V and GND to E2 terminals ACL, ACN. Connect E2
terminals HUM to Elite Steam terminals GND and IN.
NOTE:
1. To remove humidistat from the base, squeeze the louvered base at the top
and bottom. To remove from wall, lift up on the humidistat and pivot top
away.
2. Terminal block may be pulled off humidistat for easy connecting.
3. The E2 is capable of Outdoor Temperature Compensation see E2 manual.
4. The E2 may be wall or duct mounted.
3.6.3
Air pressure, Safety and High Limit Switches
Remove the jumper between terminals AB-AB and connect 12500 pressure switch,
High Limit Humidistat, safety switch or remote contact in series. If none are to be
installed the jumper must remain in place. DO NOT apply any voltage to AB-AB.
3.6.4
Air Conditioner Relay Interlock
Auxiliary DPDT safety relay: Use this method in the following situations:
1. To prevent the air conditioner from running when there is a call from humidity.
The DPDT relay will open the “Y” circuit and close the “G” circuit for operation while
a call for humidity is present. Demand for humidity will override call for cooling.
2. In systems using a thermostat where G and Y are a single circuit. The DPDT
relay will allow blower operation to occur without back-feeding the compressor.
Do not use this method when simultaneous humidification and cooling will be
desired. Use a high limit humidistat in to avoid condensation in ductwork.
The humidistat should be set to OFF during the air conditioning season if
humidification is not desired.
For variable speed or DC systems, consult furnace manufacturer.
Thread control wiring through the bottom of the unit and the strain relief (Fig. 3.m and 3.n) then up the side of the control module to
the wiring terminal blocks.
Fig. 3.t
Fig. 3.u
Fig. 3.v
Elite Steam
ON
D
IP
1 2 3 4
ON
OFF
OFF
ON
N2
GND
N1
AB
AB
GND
IN
NO
C
NC
C
NO
GND
24V
AC
L
AC N HUM SNSR
OUTDOOR TEMP. SENSOR
(not used in manual mode)
W
Y
R
G
C
NO
C
NC
C
NO
GND
24V
N2
GND
N1
AB
AB
GND
IN
Furnace Control Circuit Board
DPDT RELAY
(FIELD SUPPLIED)
CO
IL
2
4
V
Elite Steam
C1
NO2 NC2 NC1
C2
TO AIR
CONDITIONING
CONTACTOR
GFX50 HUMIDISTAT
E2 HUMIDISTAT
AIR CONDITIONER RELAY