InSTallaTIon InSTRUCTIonS
(ConTInUeD)
ODT
STEAM HUMIDIFIER FAN PACK
APRILAIRE MODULATING
STEAM HUMIDIFIER
WIRE
– 18 AWG ACCEPTABLE FOR 24 VAC APPLICATION.
ADMC
MODULATING
STEAM HUMIDIFIER
DIP SWITCH POSITION
FA
N P
ACK
24VAC
+24V
IN
GND
1
2
6
12
13
14
36.
7
%RH
ON
1
2
3
4
fIGURe 20 – aDMC with Model 866
90-1995
MODULATING STEAM HUMIDIFIER
HUMIDISTAT TERMINAL
MODULATING STEAM HUMIDIFIER
HUMIDISTAT TERMINAL
MODULATING STEAM HUMIDIFIER
HUMIDISTAT TERMINAL
+24V
IN
GND
+24V
IN
GND
+24V
IN
GND
+
-
+
-
P6
1
2
3
P6
3
2
1
P6
3
2
1
RECOMMEND USING BLOWER ACTIVATION RELAY PART # 4851
HUMIDISTAT
ON / OFF
0-10 VDC, 0-20 VDC OR 2-10 VDC
0-20 MA OR 4-10 MA
fIGURe 21 – Third Party Control Signals
90-1993
When the Modulating Steam Humidifier is
installed with the Fan Pack, wire the ADMC as
shown in
figure 20
.
The Aprilaire Automatic Digital Modulating
Control is the recommended humidity
controller for the Model 801 and Model 866
Modulating Steam Humidifier . However, the
Modulating Steam Humidifier can accept a
number of different control signals . If using a
third party control, configure the Modulating
Steam Humidifier internal controller for the
third party control signal . See
figure 21
for
configuration options .
ConTRol DIP SwITCH SeTTInGS
DIP2
DIP3
HUMIDISTaT SIGnal TyPe
OFF
OFF
ON / OFF
ON
OFF
0-20 VDC
OFF
ON
0-10 VDC or 0-20 mA
ON
ON
2-10 VDC or 4-20 mA
23
