Duct humidistat TDC-BH-U-W24
Duct humidistat TDC-BH-U-W24
Duct humidistat TDC-BH-U-W24
Doc: 70-07-0114B-24, V1.4, 20160912
© Vector Controls GmbH, Switzerland
Subject to alterations
TDC-BH-U Intelligent duct humidistat
General description
The TDC-BH-U is a stand-alone electronic binary humidity stat. The TDC-BH-U features one duct humidity
sensor, one external NTC temperature sensor input and two binary outputs (Relays).
A detailed parameterization is possible with the use of a simple configuration routine. The TDC-BH-U can be
configured using the standard operation terminal. No special tools or software is required.
Ordering, Name convention
TDC-BH-U
│ ││ └─────
Housing:
U = Conduit connector, Blank: Cable gland
│ │└───────
Function
H = Humidity
│ └────────
Output:
B = Binary
└──────────
Series Indication
TDC
Item name
Item code
Variant
Features
TDC-BH-U-W20
TDC-BH-U-W24
TDC-BH-U-W25
40-10 0059-20
40-10 0059-24
40-10 0059-25
standard
humidifying
de-humidifying
Binary controller with:
1 Internal humidity input
1 external temperature input (For set point
shift)
1 DO (Relay) for humidifier or dehumidifier
1 DO (Relay) for fan (optional)
TDC-BH-U-D-W20
TDC-BH-U-D-W24
TDC-BH-U-D-W25
40-10 0060-20
40-10 0060-24
40-10 0060-25
Deluxe
humidifying
de-humidifying
Accessories
SOD-Tn10-1
AES3-HT-A5
40-20 0108
40-50 0104
Outdoor sensor
Replacement humidity sensor 5% accuracy
Selection of actuators and sensors
External temperature sensors: Use only our approved NTC sensors to achieve maximum accuracy.
Recommended is SDB-Tn10-15 as Duct sensor and SOA-Tn10 as outdoor sensor.
Binary auxiliary devices: E.g. humidifiers, de-humidifiers and fans. Do not directly connect devices that
exceed 2(1.2) A. Observe startup current on inductive loads!
Mounting location
The Duct controller should be installed directly on the duct, in an area where the air stream is well mixed:
Locate a supply air sensor two or three meters downstream from the nearest fan and coil.
Mount the return air sensor close to the air inlet but downstream from a return fan if one is present.
Installation
1.
Drill a hole with a diameter of 16
mm (5/8”) in the air duct.
2.
Connect the wires to be connected to the terminals of the back part according to wiring
diagram.
3.
Insert the probe in the hole; secure the back part to the duct with two
–self-tapping screws.
4.
Connect the cable of the operating unit to the matching connector on the back part.
5.
Slide the two latches located on the left side of the front part into the hooks at the upper left
side of the back part.
6.
Carefully lower the front part until the interconnector reaches the back part. Continue
pressing in a gentle way until the front part is fully connected.
7.
With a Philips-type screw driver of size #2, carefully tighten the front holding screw to secure
the front part to the back part. This screw is located on the front right side of the front part.
There is no need to tighten the screw too much.
Technical specification
Important Notice!
These controllers are for use as operation controls only and are not suitable for use as safety
devices. Whenever a control failure could result in a loss of property or lead to personal injury, it is the responsibility
of the installer, designer or user to incorporate additional safety devices to prevent such events. Tampering with the
device or misapplication will void warranty. Observe switching currents on relays and local rules and regulations
Power Supply
Operating Voltage
24 VAC ±10%, 50/60 Hz, Class 2, 48 VA max.
Power Consumption
Max. 1.5 VA
Electrical Connection
Terminal Connectors,
wire 0.34…2.5 mm
2
(AWG 24…12)
Deluxe type only:
Power backup for real time clock
Min 48h if charged for 24h
Signal Inputs
Humidity Input:
Range
Accuracy
Hysteresis
Element: Polymer-Based Capacity Sensor
0…100% r.H.
10%...90% r.H.
5.0%
0…10% and 90…100%
7.0%
±1% r.H.
Temperature Input
Range
External NTC (Sxx-Tn10 sensor):
-
40…70°C (-40…158°F)
Accuracy
-
40…0°C (-40…32°F): 0.5 K
0…50°C (32…122°F): 0.2 K
50…70°C (122…158°F): 0.5 K
Signal Outputs
Digital Switching Outputs
Switching type
AC Switching power
DO1…DO2
Relays, Normally open
2(1.2) A
Environment
Operation
Climatic Conditions
Temperature
Humidity
To IEC 721-3-3
class 3 K5
0…50 °C (32…122 °F)
<95 % r.H. non-condensing
Transport & Storage
Climatic Conditions
Temperature
Humidity
Mechanical Conditions
To IEC 721-3-2 and IEC 721-3-1
class 3 K3 and class 1 K3
-
25…70 °C (-13…158 °F)
<95 % r.H. non-condensing
class 2M2
Standards
conform according to
EMC Standard
EMEI Standard 73/23/EEC EN 61 000-6-1/ EN 61 000-6-3
Product standards
Automatic electrical controls
for household and similar use
Special requirement on
temperature dependent
controls
EN 60 730
–1
EN 60 730
– 2 - 9
Degree of Protection
IP52 to EN 60 529
Safety Class
III (IEC 60536)
Housing
Cover, back part
Filter material
Polycarbonate PC (UL94 class V-0)
PTFE coated 1μm pores
General
Dimensions (H x W x D):
Transmitter case:
Probe:
91 x
68 x 47mm (3.7” x 2.7” x 1.9”)
14 x 77 mm (
0.55 x 3”)
Weight (including package)
220g
Power failure
Upon power-interruption, all parameters and set points are memorized in non-volatile memory and therefore do not
have to be re-entered again.
Error messages
Err1:
Humidity sensor faulty. The humidity sensor is damaged.
Err2:
External input for temperature setback missing or damaged.
Wiring diagram
Terminal connections
Dimensions mm (in)
0V (GND)
24V AC
2
G
TDC-BH-U
1
G0
0…24V AC
3
Q13
7 8
B1 M
R
T
5
Q23
Y
B1
4
Q14
Y
B2
6
Q24
Description:
1. Connection for power-supply (24 V AC/DC, ±10%). In
case of DC, connect the negative power-terminal.
Common connection for analog in- and outputs.
2. Connection for power-supply (24 V AC/DC, ±10%). In
case of DC, connect the positive power-terminal
3.
Normally open contact “DO 1” Humidify or Fan
4.
Normally open contact “DO 1” Humidify or Fan
5.
Normally open contact “DO 2” Dehumidify or Fan
6.
Normally open contact “DO 2” Dehumidify or Fan
7.
Thermistor input “RT” (Thermistor Sxx-Tn10)
8.
Thermistor input “RT” (Thermistor Sxx-Tn10)
9.
Observe maximum switching power of
2(1.2)A per output!
76 (3.0)
47 (1.9)
91 (3.6)
6
8
(2
.7
)
