User manual

Technical Data
TowiTek differential temperature control module
Dimensions: 50 x 51 x 22 mm
Stromversorgung: 9-12V~(AC) or
12-15V= (DC)
@ 60mA max.
Rating for relay contact: 250VAC / 5A
Allowed environment temp.: 0°C .... 40°C (no condensing water)
Sensor specification: 2 x NTC 5kOhm @ 25°C B
25/85
= 3500
Limit range for Sensor 1 min. 0...100°C
Limit range for t1-t2 0...20°C
Disposal after end of using life for this product
Electronic devices of all kinds must not be disposed thru regular
household waste disposal but should be turned in to a collection
point for proper recycling. Please check with your local
requirements.
Limited Warranty
This product was designed and manufactured with great care and comes with a
warranty against material or manufacturing defects at time of purchase. This
warranty is valid for 24 months starting with the day of purchase and can be claimed
with original sales receipt. The warraty of TowiTek is limited to cost free repairing or
replacement of the defective unit. Expenses and risk of transportation; compensation
for installation and de-installation and all other expenses which may be related to the
repair or exchange of this product are not refunded by TowiTek. The liability for
consequential damages resulting from the use of this product – no matter of which
exact kind – is generally ruled out.
TowiTek
differential temperature
control module
Nr. 19 12 53
User Guide
www.conrad.com
Thank you for purchasing this product of TowiTek!
This user guide contains many important instructions on
safe and proper use of this product. The purpose of this
user guide is to make sure you always will get best
performance andan reliable operation of your new product.
PLEASE FULLY READ THIS USER GUIDE!
The handling of products operating with electric current requires you to
follow the rules from VDE such as VDE 0100, VDE0550/0551, VDE 0700,
VDE 0711 and VDE 0860 or other local rules in your country.
• TowiTek modules are not designed and authorized for use in life support
or life saving applications! Do not use the product for applications in
which a temporary or permanent failure or malfunction could cause
damage to persons or propery.
• If the module is used to switch currents greater 24V it is necessary to
have the installation done with no voltage applied and performed by a
trained professional authorized for such work. The module may only be
used in such application if it was installed in a safe to touch enclosure.
• The module must only be used in dry and clean environment. The use
near water, heavy dirt and/or high humidity is dangerous and not
permitted.
• The product must not be used in conjunction with any type of flammable
liquid or gas or other environment with risk of spark triggered
explosions.
• Never exceed the limits or ratings listed in the 'Technical Data' section at
the end of this user guide.
• If the module is used in schools or educational facilities or similar
institutions the operation must be supervised by trained and authorized
staff.
• The product itself and all parts thereof (including packing material) are
not suitable toys for childern! (choking hazard, risk of electric shock, ...)
Intended of use for this product
The TowiTek differential temperature control module can be used for
many regulating applications for heating systems. Typical use for this
product is controlling circulation pump in various kinds of heating systems,
including solar heating systems.
Features of the differential temperature control module
• Connection of two temperature sensors (included with the product)
• Two conditional rules for activating the output:
Condition #1: minimum temperature on Sensor 1 must be above
specified Limit (0...100°C)
Condition #2: temperature on Sensor 1 must exceed temperature on
Sensor 2 by at least specified Limit (0..20°C)
• Manual mode for controlling the output without need to change limits
• Easy adjustment of limits using rotary knobs
• Digital signal processing with microcontroller using analog/digital
conversion for measuring signal inputs.
Operational instructions
Manual control of the relay output
button 'Manual Override' LED activity function
press about 0.5 sec. yellow on / red on override ON
again press about 0.5 sec. yellow on / red off override OFF
again press about 0.5 sec. yellow off or blinking normal mode
The manual override mode can be recognized by the yellow LED being
permanently lit and the red LED shoing the state of the output.