Viconics H270 - Manual (Page 2)

2
TABLE 1: ORDER CODE
H270 - A-B - C-D - E-F G-H
A Output no. 1 ( controlled device )
1 ON/OFF (15 min. time based)
4 (PWM) 24 VAC
5 (PWM) 5 VDC
6 Analog 0-10 Volts DC
B Output no. 2 ( controlled device )
0 Not installed
1 ON/OFF (15 min. time based)
4 (PWM) 24 Volts AC
5 (PWM) 5 Volts DC
6 Analog 0-10 Volts DC
8 Signal transmitter (0-10 VDC)
(1V= 10% , 9V-90%) ♦
9 Signal transmitter (0-5 VDC)
(0.5V= 10% ; 4.5 V=90%) ♦
C Output no. 1 and 2 control mode
1 Humidify
2 Dehumidify
3 Humidify ( no. 1 ) and dehumidify ( no. 2 )
4 Dehumidify ( no. 1 ) and humidify ( no. 2 )
D Main sensor location Sensor
0 Not installed None
1 Inside humidistat ( Local ) H50
2 Duct mount ( stat on duct ) H60
3 Duct mount ( stat on wall ) H71
4 Remote wall mount H80
E Setpoint adjustment
1 User adjustable
2 Blind cover
F Future option
0 Unused
G Duct humidity supply high limit
0
Without sensor
3 With H71 duct mounted humidity sensor
H Outdoor temperature reset input
0 Without sensor
1 With S71 duct mounted outdoor temp.
sensor
Example: H270 - 61 - 32 – 10 - 31
One “SCR” 0 to 10 volts humidify output and one relay
dehumidify output. Humidistat and sensor are duct mount.
Setpoint is user adjustable. A remote duct mounted high limit
is installed in the supply. An outdoor temperature sensor is
installed to reset the humidity setpoint.
♦ Resolution: 0.5 % for retransmit only
See sensor specications for dimensions of sensors
Note: the complete order code includes the sensor that will be
shipped with the humidistat.
WIRING
2 ON/OFF OUTPUTS
Single transformer
Fig.2: Wiring diagram with single transformer
Multiple transformers
Fig.3: Wiring diagram with multiple transformers
Note: both of the above wiring diagrams show how to
wire output of type 1, 2, 3 and 4 (switched 24 vac).
For outputs of type 5 and 6 (vdc out) refer to wiring diagrams
3 and 4 on next page.
BLACK
BLACK
RESET
SIGNAL
HIGH LIMIT
HUMIDITY
OUTDOOR
+10 Vdc 10
9
8
24 Vac
INPUT
COMMON
MAIN SENSOR
OUTPUT #1
ON / OFF
OUTPUT #2
ON / OFF
3
5
7
6
4
24 Vac
1
2
FOR CONTROL RED
HUMIDITY SENSOR
HIGH LIMIT
TEMPERATURE SENSOR
S71
WHITE
RED
HUMIDITY SENSOR
RELAY
+
or 24 Vac VALVE
WHITE
-
RELAY
or 24 Vac VALVE
+
-
WHITE
BLACK
WHITE
BLACK
INPUT
7
RESET
SIGNAL
HIGH LIMIT
HUMIDITY
OUTDOOR
+10 Vdc
10
9
8
24 Vac
COMMON
MAIN SENSOR
OUTPUT #1
ON / OFF
OUTPUT #2
ON / OFF
24 Vac
5
6
4
3
24 Vac
1
2
24 Vac
FOR CONTROL
HUMIDITY SENSOR
TEMPERATURE SENSOR
S71
RED
RED
HIGH LIMIT
HUMIDITY SENSOR
RELAY
or 24 Vac VALVE
-
+
RELAY
or 24 Vac VALVE
+
-