www.resourcedm.com
Revision 2.3
Page 66 of 72
Commissioning & Service Guide DMTouch
Warning
Please Note
The specifications of the product detailed on this
Set-Up Guide may change without notice. RDM
Ltd. shall not be liable for errors or for incidental
or consequential damages, directly and indirectly,
in connection with the furnishing, performance or
misuse of this product or document.
Ensure that all power is
switched off before
installing or maintaining
this product
www.resourcedm.com
Defrost Timer Device Setup
Once you have pressed on the channel number you will see the following
screen.
Channel name
give the channel a meaningful description such as: -
“Defrost
Timer for Bay 1”
Defrost hold
prevents any single controller from entering the recovery
process until all the controllers operating from that defrost timer channel have
completed the defrost.
Max Df
(Mins) Length
– (If using header control). Maximum period the valve
is opened for (Minutes). If all devices operating from this defrost timer
channel complete the defrost before this value is reached then the selected
relay will be turned off. Note this is also the maximum defrost length used in
Defrost Hold. If the d
mTouch doesn’t receive confirmation from all devices
operating on the defrost timer channel that they have successfully completed
the defrost then the dmTouch will send a defrost termination network
command to those devices when this value is reached.
Valve Device
– (If using header control). From the drop down menu select
the appropriate defrost header controller.
Valve Item
– (If using header control) Enter the number of the relay to
operate on. E.g. 1 would operate relay 1
Defrost every
– Enter a number between 1 and 7 to determine the
frequency of a defrost. If 1 is entered the defrost schedule will execute every
day. If 2 is entered the defrost schedule will execute every second day etc.
Number per day
– Enter a number between 1 and 8 to determine the
number of defrost events per day.
Enter the desired defrost start time in Defrost 1. Repeat for further entries
then press recalculate the dmTouch will calculate and populate the other
times needed.
When a device channel type is set to auto the defrost timer channel will
operate on devices whose names have their middle 2 characters the
same as the configured defrost timer channel number. For example
defrost timer channel 22 will operate on all devices that have 22 as
their middle characters, such as RC22-1, RC22-2 & RC22-3.
When a device channel type is set to a defrost timer channel number
between 1 and 100 then the defrost timer channel mapped will operate
on the devices configured. As shown in the example defrost timer
channel 1 will operate on controller RC23-1as it has been mapped to
channel 1.
On the channel column, you have the option to select Auto or a defrost
channel number between 1 and 100 for each device
.
