HT/S Space Humidity and Temperature Sensor Installation Instructions TG200990 Issue 2, 19-Mar-2013 1
Installation Instructions
HT/S
Space Humidity and Temperature Sensor
Important: Retain these instructions
These instructions shall be used by trained service personnel only
If the equipment is used in a manner not specied by these instructions, the protection provided by the equipment may be impaired.
1
Dimensions
2
Mounting Requirements
1 UNPACKING
2 INSTALLATION
It is recommended that the installation should comply
with the local electrical safety installation practices (e.g.
HSE Memorandum of Guidance on Electricity at Work
Regulations 1989, USA National Electric Code).
CONTENTS
1 Unpacking .....................................................................1
2 Installation .....................................................................1
3 Maintenance ..................................................................4
4 Disposal .........................................................................4
HT/S Installation Instructions (TG200990)
> 50 cm (20”)
86 mm (3.39”)
26 mm (1.02”)
86 mm (3.39”)
1.5 m (5 ft)
Replacing an HT/S with HT/S V2: Re-wire the humidity
connection as described below, set the controller’s input
connected to sensor’s humidity output to voltage, and change
the scaling used by the sensor type module to use the correct
scaling see step (9).
2 HT/S Space Humidity and Temperature Sensor Installation Instructions TG200990 Issue 2, 19-Mar-2013
HT/S Installation Instructions
2
Mounting Requirements (continued)
4
Mount Backplate
5
Remove Cutouts (as required)
3
Remove Backplate
Either Back Box (BESA)
or Wall Box or Wall
6
Route Cables
2 INSTALLATION (continued)
-5 °C
(23 °F)
+55 °C
(131 °F)
0 °C
(32 °F)
+40 °C measurement
(104 °F)
HO
2
0 %RH
100 %RH
non -condensing
60 mm (2.36”)
FR
ABS
35 mm
(1.38”)
35 mm (1.38”)
35 mm (1.38”)
35 mm (1.38”)
HT/S Space Humidity and Temperature Sensor Installation Instructions TG200990 Issue 2, 19-Mar-2013 3
Installation Instructions HT/S
HT/S/2%
7
Connect to Controller
8
Assemble unit
I1N
I-P
I2N
I4N
earth (ground)
screen at IQ end
I-P
IN
+24Vdc
I2N
humidity
linked for current (I)
temperature
linked for current (I)
+24Vdc
IN
+24Vdc
2 INSTALLATION (continued)
In order to maintain the HT/S/2% temperature sensor accuracy, the temperature sensor should only be used if the humidity
sensor is also used.
‘click’
HT/S V2
I1N
I-P
I2N
I4N
earth (ground)
screen at IQ end
I-P
20/24Vdc
IN
I2N
humidity
linked for current (I)
temperature
linked for current (I)
IN
When connecting to an IQ3, in order to provide sufcient supply current to the sensor, the sensor I-P terminal must be connected
to both channels’ 24 V terminals as shown below.
COM
earth (ground)
screen at IQ end
15 to 30Vdc
HUM
IN
20
/24Vdc
C(0V)
IN
C(0V)
NTC
humidity
linked for voltage (V)
temperature
linked for thermistor (T)
1
~/+
5
4 HT/S Space Humidity and Temperature Sensor Installation Instructions TG200990 Issue 2, 19-Mar-2013
HT/S Installation Instructions
Please send any comments about this or any other Trend technical publication to [email protected]
© 2013 Honeywell Technologies Sàrl, ECC Division. All rights reserved. Manufactured for and on behalf of the Environmental and Combustion Controls
Division of Honeywell Technologies Sàrl, Z.A. La Pièce, 16, 1180 Rolle, Switzerland by its Authorized Representative, Trend Control Systems Limited.
Trend Control Systems Limited reserves the right to revise this publication from time to time and make changes to the content hereof without obligation
to notify any person of such revisions or changes.
Trend Control Systems Limited
Albery House, Springeld Road, Horsham, West Sussex, RH12 2PQ, UK. Tel:+44 (0)1403 211888 Fax:+44 (0)1403 241608 www.trendcontrols.com
Trend Control System USA
6670 185th Avenue NE, Redmond, Washington 98052, USA. Tel:(425) 869-3900 Fax:(425) 869-8445 www.trend-americas.com
9
Congure Controller
10
Test System
3 MAINTENANCE
4 DISPOSAL
WEEE Directive:
At the end of their useful life the packaging and
product should be disposed of by a suitable
recycling centre.
Do not dispose of with normal household waste.
Do not burn.
SET should be used to congure the controller’s sensor
type modules to use the following SET Unique Sensor
References:
Humidity Input
SET Unique
Sensor Reference
HT/S V2 Humidity V
Set input channel for
voltage
HT/S/2% Humidity I Link input channel for
current
Temperature input
SET Unique Sensor
Reference
HT/S V2 Thermistor HTST DT (°C)
or
Thermistor HTST DT F (°F)
Set input channel
for thermistor
HT/S/2% PRTI 0+40 (°C)
or
PRTI +32+104 F (°F).
Set input channel
for current
For manual scaling see the HT/S Data Sheet (TA200989).
∆ T
Temperature
Humidity
∆ H
2 INSTALLATION (continued)
Over time, the sensing element may become covered in dust.
The dust can be removed using compressed air. Under no
circumstances should water or cleansing agents be used on the
sensing elements.
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