7 . L I N K C O N N EC T I O N S
LINK CABLES ARE ONLY NEEDED IN SINGLE HEATERS USED ON THEIR OWN OR IN A MASTER HEATER AND DEPEND UPON WHICH
CONTROLS YOU USE
NEVER
ADD ANY LINKS TO SLAVE HEATERS- THIS COULD DAMAGE YOUR HEATERS AND IS NOT COVERED BY THE GUARANTEE
SINGLE HEATERS or MASTER HEATER LINKS
If you don’t fit a PROTIM-7 Timer or a RT16 Digital Thermostat to a single heater or the master
heater in a Master / Slave set up LINK Terminals 1 & 2 as shown in drawing to the right.
DO NOT PUT THIS LINK CABLE IN ANY OF THE SLAVE HEATERS
If you don’t fit an OUH2-S Heater Control Switch or RST-TP or RST2-IN External Thermostat
or a PROSTAT4 Thermostat to a single heater or the master heater in a Master / Slave set up
LINK Terminals 3 & 5 as shown in drawing to the right.
DO NOT PUT THIS LINK CABLE IN
ANY OF THE SLAVE HEATERS
8 . F A N O VE R R U N
The heater incorporates a fan over run device that ensures that when the elements turn off the heater case temperature or internal
components do not increase significantly. This may either work by allowing the fan to continue running for a while when the elements
turn off or by turning the fan back on if the temperature rises when the heater elements and fan turn off. This will normally only occur
for a couple of minutes after the heating elements turn off. It is for the above reason that you must turn off the heater using a control
device or the internal thermostat and NOT by isolating the mains power. Continuous turning on and off of the heater using the mains
supply isolator whilst it is running can damage the heater and is not covered by the guarantee.
9 . T R O U B L E S H O O T I N G A N D SO L U T I O N S
Wall thermostat does not work correctly in a Master / Slave set up or single heater.
Check that you have turned up fully the inbuilt thermostat on the back of the heater as this will turn off the heater if set to a lower
temperature than the wall thermostat.
Single hea
ter won’t turn on from new.
Check that you have fitted any links that are required correctly
– See section 7.
I have a OUH2-S heater
control switch it is set to “OFF” but the heaters are still coming on.
This will happen if you have a FST-IN frost Thermostat fitted as it overrides everything to help protect your building from damage by
cool temperatures.
Can I add different controllers or additional heaters at a later date?
Yes you can add additional controllers or additional OUH2 heaters at a later date contact you electrician or electrical wholesale for
further information.
Why does one heater turn on using a Master / Slave set up but the others stay off?
If you are using the internal thermostat in the heaters this is perfectly normal and one of the new advance features. Each heater turns
on / off on its own thermostat so that if one heater was mounted near an outside door or in a cooler part of the building it would turn
on more often. The remaining heaters in the warmer areas would stay off. The OUH2-S heater control switch overrides all internal
thermostats and turns off every heater.
I need help!
If you have read these instructions and still need help please call us on the number on the back page during office hours and our
technical department will assist you. Please have these instructions in front of you when calling as this will assist us in helping you.
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