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ELECTRONIC HUMIDISTAT: H200
• ONE OR TWO STAGES
DESCRIPTION
The H200 series low voltage, microcomputer-based PI
(proportional and integral) humidistats are designed for
accurate humidification and/or dehumidification control
in non-corrosive commercial applications such as:
hospitals, schools, office buildings, retail stores,
museums, computer rooms, etc.
The H200 series is available with one or two outputs
for maximum flexibility. Outputs can be of the following
type: proportional, on/off, and pulse width modulation
(PWM). In addition, a wide variety of mounting
configurations is available. Sensing options include
remote duct and room as well as integral room and
duct.
Setpoint adjustment can be either concealed or
exposed, adding even more versatility to the product.
Exposed models feature internally selectable minimum
and maximum setpoint knob stops.
In order to facilitate periodic recalibration, the H200
series contains a unique autocal key, which permits
instant recalibration (see dimension drawing on page 5
for location).
Each humidistat is computer calibrated and factory
programmed with default parameters. All control
parameters (such as proportional band, stage
differential, etc.) may be changed in the field with the
H263 programming tool without having to remove the
thermostat cover. The H263 also doubles as a
diagnostic tool and indicates the status of all the inputs
and outputs, and will reduce troubleshooting time by
quickly identifying the specific problem.
Fig.1: Wall mounted humidistat
Features Benefits
• Microcomputer-based design with PI algorithm ⇒
• One or two outputs ⇒
• On/off and/or proportional outputs ⇒
• Direct or reverse acting outputs ⇒
• Integrated and remote sensing ⇒
• Autocal button ⇒
• Concealed or exposed set point ⇒
• Ouput signal to digital indicating devices ⇒
• Optional H263 diagnostic tool with digital display ⇒
• Sensor failure protection ⇒
• CE approved ⇒
Exceptional accuracy
Controls humidification and dehumidification equipment
Greater flexibility
Controls humidification and dehumidification equipment
Larger choice of mounting options
Permits instant recalibration
Can be used in a large variety of environments
Increases functionality of product
Simplifies troubleshooting
Prevent water dammage
Can be sold in European markets
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TABLE 1: ORDER CODE
WIRING
H200 - A-B - C-D - E-F
A Output no. 1 ( controlled device )
1 ON/OFF (15 min. time base)
4 (PWM) 24 VAC
5 (PWM) 5 VDC
6 Analog 0-10 VDC
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
1Humidify
2 Dehumidify
3 Humidify ( no. 1 ) and dehumidify ( no. 2 )
4 Dehumidify ( no. 1 ) and humidify ( no. 2 )
2 ON/OFF OUTPUTS
Single transformer
+
-
+
-
BLACK
WHITE
RED
RELAY
or 24 Vac VALVE
RELAY
or 24 Vac VALVE
HUMIDITY SENSOR
FOR CONTROL
24 Vac
INPUT
N/A
N/A
1
2
3
4
5
6
7
8
9
10
24 Vac
OUTPUT #2
ON / OFF
OUTPUT #1
ON / OFF
COMMON
♦
MAIN SENSOR
♦
+10 Vdc
Fig.2: Wiring diagram with single transformer
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 Rem ote wall mount H80
E Setpoint adjustment
1 User adjustable
2 Blind cover
F Future option
0 Unused
Example: H200 - 61 - 32 – 10
One “SCR” 0 to 10 volts humidify output and one relay
dehumidify output.
Humidistat and sensor are duct mount. Setpoint is user
adjustable.
♦ Resolution: 0.5 % for retransmit only
See sensor specifications for dimensions of sensors
Note: the complete order code includes the sensor that will
be shipped with the humidistat.
Multiple transformers
24 Vac
+
-
+
-
BLACK
WHITE
RED
RELAY
or 24 Vac VALVE
RELAY
or 24 Vac VALVE
HUMIDITY SENSOR
FOR CONTROL
24 Vac
INPUT
N/A
N/A
1
2
3
4
5
6
7
8
9
10
24 Vac
24 Vac
OUTPUT # 2
ON / OFF
OUTPUT # 1
ON / OFF
COMMON
MAIN SENSOR
+10 Vdc
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 Fig.4 and
Fig.5 on next page.
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2 PROPORTIONNAL OUTPUT
1 PROPORTIONNAL AND 1 TRANSMITTER OUTPUT
24 Vac
INPUT
N/A
N/A
1
2
3
4
5
6
7
8
9
10
24 Vac
OUTPUT #2
0 to 10 Vdc
OUTPUT #1
0 to 10 Vdc
COMMON
MAIN SENSOR
+10 Vdc
Fig.4: Wiring diagram with two analog outputs
+
-
+
-
BLACK
WHITE
RED
ELECTRONIC MOTOR
or "SCR"
ELECTRONIC MOTOR
or "SCR"
HUMIDITY SENSOR
FOR CONTROL
OUTPUT #2
0 to 5 Vdc
0 to 10 Vdc
TRANSMITTER
OUTPUT #1
0 to 10 Vdc
COMMON
MAIN SENSOR
+10 Vdc
Fig.5: W iring diagram with one analog and one trans mitter output
24 Vac
INPUT
N/A
N/A
1
2
3
4
5
6
7
8
9
10
24 Vac
+
DDC SYSTEM
or METER
-
ELECTRONIC MOTOR
+
or "SCR"
-
BLACK
WHITE
RED
HUMIDITY SENSOR
FOR CONTROL
APPLICATION EXAMPLE:
Steam humidification system controled by a 0 to 10 Vdc valve wired to output #1. R emote humidity display using 0 to 5 Vdc signal is wired to
output #2. The humidity sensor is located in the return air duct.
Humidistat model number: H200-69- 13-10
Fig.6: Applicat ion example
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TABLE 2: HUMIDISTAT ACCESSORIES
H50 Internal humidity sensor for H200 humidistat and for H80 remote wall sensor.
H60 Duct humidity sensor to mount directly onto the back of any H200 humidistat.
H71 Duct humidity sensor to mount directly onto the supply or return of the ventilation duct.
H80 Wall humidity sensor to mount in any remote location.
H263 Programming tool for troubleshooting, viewing and modifying humidistat parameters.
008-0089 Replacement lexan (cover sticker) for H200 humidistat.
024-0048 Humidistat replacement base with connector (H50 internal humidity sensor not included).
H50 INTERNAL SENSOR H60 DUCT SENSOR H71 REMOTE DUCT SENSOR
This humidity sensor can be
mounted directly on 024-0048
humidistat base.
H80 REMOTE WALL SENSOR H263 PROGRAMMING TOOL
This humidity sensor can be wall
mounted in any remote location.
The humidistat may be located
on the duct or other location, with
humidity sensing from the H80
sensor location.
This humidity sensor can be
mounted directly onto the back of
any H200 humidistat, with the
supplied hardware. This
transforms the humidistat into a
duct-mounted humidistat.
This tool is used to change
humidistat parameters. It is also
useful for troubleshooting. Just
plug it in the humidistat through
the casing. See page 6 for more
details.
This humidity sensor can be
mounted directly onto the supply
or return of the ventilation duct.
The H200 may be located on the
wall with humidity sensing from
the remote H71 sensor location.
WARNING:
All H200 humidistats are
intended to control equipment
under normal operating
conditions. Where failure or
malfunction of H200 series
humidistats could lead to an
abnormal operating condition
that could cause personal injury
or dam age to the equipment or
other property, other devices
(limit or safety controls) or
systems (alarm or supervisory)
intended to warn of, or protect
against, failure or malfunction of
H200 humidistats must be
incorporated into and maintained
as part of the control system.
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CONTROL SCHEMATIC:
100%
OUTPUT #2
HUMIDIFICATION
HUMIDIFICATION
Fig.7: Control schematic
100%
OUTPUT #1
35%30%
d2
pb
0%
SET POINT
100%
OUTPUT #2
DEHUMIDIFICATION
0%
d2
100%
OUTPUT #1
DEHUMIDIFICATION
0%
0%
45%40%
50%
db
55% 60%
pb = proportionnal band
d2 = differential between output #1 and #2
db = dead band between humidification
and dehumidification
65%
70%
TABLE 3: H200 PARAMETERS
CODE
Db 0 to 40 % R.H. 25% R.H. Dead Band between humidification and dehumidific ation.
SL 30 to 100 % R.H. 85% R.H. Supply Limitation: High humidit y limit in the supply duct (H270 only)
d2 0 to 199 % (of pr oportional
Pb 0 = 1.6 % R.H.
o1 0 = Humidific ation
o2 0 = Humidific ation
cc 2 = Without int egral
t1 0 = On/off
t2 0 = On/off
rA 0 = °C
Ca
hA 0 à 127 "Hardware ass embly" Code related to thermostat model and entered at initial setup at
it 1 to 99 = 1 TO 99 MINUTES 60 "Integral time" Error integration time.
Lt -40 à +40 °C (-40 à 105 °F) -20 °F "Lower temperature" minimum outside temperature f or setpoint reset (model H270 only)
Ht -40 à +40 °C (-40 à 105 °F) 32 °F "Higher temperature" maximum outside temperature for setpoint reset (model H270
rE 1 à 99 % R.H. 20 % R.H. "Reset” Minimum humidity value ( % HR ) (model H270 only)
VALUES DEFAULT
band)
1 = 3.2 % R.H.
2 = 6.4 % R.H.
3 = 12.8 % R.H.
4 = 25.6 % R.H.
1 = Dehumidification
1 = Dehumidification
3 = With integr al
1 = 8 minutes
2 = 1 second
1 = 8 minutes
2 = 1 second
1 = °F
± 13 %
VALUE
100% Differential for output #2": Shift for out put 2 relative to output 1
2= 6.4%
R.H.
3 "Control Code"
1 DO NOT
CHANGE
DESCRIPTION
Proportional Band
"Output #1" Action f or output no 1
"Output #2" Action f or output no 2
"Time #1" Time period for output no 1
"Time #2" Time period for output no. 2
"Range" Temperature Scale
Calibration ( deviation mode: DO NOT MODIFY: USE AUTOCAL PROCEDURE;
FOR H100 TRANSMITTER, USE THE ZERO POTENTIOMETER ON THE
TRANSMITTER.
the factory.
only)
Example: rE = 20%. Humidity setpoint will be r eset from selected s etpoint to 20%, from
Ht to Lt
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AUTOCAL PROCEDURE
1. Measure the room humidity near the Viconics
humidistat with an accurate hygrometer.
2. Turn the humidistat set point dial to match the reading
of the hygrometer.
SENSOR FAILURE PROTECTION
The sensor is the most sensitive part of the humidistat and
also the most exposed. In the case of a sensor failure in
humidification mode, the H200 will automatically assume a
failsafe output of 0%.
3. Push and hold the autocal button for few seconds or
until the internal red light turns on. Look through the
slots on the left side of the humidistat.
SPECIFICATIONS
Operating Conditions: 5 °C to 50 °C ( 32 °F to 122 °F )
•Control: 0% to 95% R.H. non-condensing
•Sensor: 0% to 100% R.H. (see Note 1.)
Resolution: ± 0.1 %
Repeatability: 0.5 %
Accuracy and sensor interchangeability:
± 2 % R.H. from 0 to 100 % R.H.
Range: 10 % to 90 % R.H. for 5 to 50 °C
(41 °F to 122 °F )
Temperature effect: 0.05 % / °F
Outputs: Isolated Triac: 30 Vac at ½ A max.*
0 to 5 VDC into 1KΩ resistance min.
0 to 10 VDC into 2KΩ resistance min.
0/5 VDC at 20 mA max.for both outputs
Power: 24 VAC -15%, +10%; 50/60 Hz; 2 VA
Base & casing: Off-white; self extinguishing
ABS plastic
*Triac outputs can only switch AC loads. Use relays when
switching dc loads.
Note 1. Humidity sensor: Solid state humidity sensor.
Suitable for normal, clean air. Not to be used in
corrosive or harmful environment.
DIMENSIONS
Wiring from top
Security screw
3.275" [83mm]
1.275" [32mm]
Fig.8: D imens ion drawing
Note: Specifications and equipment are subject to change without prior notice.
Wiring from back
Cover
2.8" [71mm]
Base
"Autocal" button
1.00" [25mm]
1.275" [32mm]
2.8" [71mm]
1.60" [41mm]
(Invisib le)
4.5" [114mm]
2.0" [50.8mm] 3.77" [95.8mm]
0.9" [22.8mm]
Cover
TABLE 4: SENSOR
CHARACTERISTICS
Voltage between black and white
wire, terminals #6 and #7
HUMIDITY SENSOR OUTPUT
0 % 1.05 V
5 % 1.19 V
10 % 1.34 V
15 % 1.48 V
20 % 1.63 V
25 % 1.77 V
30 % 1.92 V
35 % 2.06 V
40 % 2.20 V
45 % 2.35 V
50 % 2.49 V
55 % 2.64 V
60 % 2.78 V
65 % 2.93 V
70 % 3.07 V
75 % 3.21 V
80 % 3.36 V
85 % 3.50 V
90 % 3.65 V
95 % 3.79 V
100 % 3.94 V
Viconics Electronics Inc.
9245, Langelier Blvd, St-Leonard, Quebec, Canada H1P 3K9
www.viconics.com
sales@viconics.com
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