TIMER
ON
OFF
REMOTEAIR SENSOR
RT+SL
DS-SB
NL RT-
TIMER
ON
OFF
REMOTEAIR SENSOR
RT+SL
DS-SB
NL RT-
TIMER
ON
OFF
REMOTEAIR SENSOR
RT+SL
DS-SB
NL RT-
L
L L
ZONE 8YES
NOTE 1Gr - Grey Wire, Or - Orange WireSome valves use di�erent
colours. If the endswitch is not being used put a link between Gr
and Or
230VACTUATOR
UP TO 4 PER ZONE
IF THIS SWITCH IS SET TO YES, ZONE 8
ENABLES THE BOILER, PUMP AND VALVE.
IF SET TO NO, ZONE 8 ISISOLATED.
NO
N NL L
ZONE 2N NL L
ZONE 1
TIME CLOCK ZONE 1 ZONE 2 ZONE 8
N NGr Or
UFH VALVEUFH
PUMPBOILERMAINS
UH3
L E NL E NL E N IN OUT
N SL1 2
L N1 2 3 4
5 AMP FUSETIME DELAY
230VACTUATOR
UP TO 4 PER ZONE
MAINSSUPPLYFROMFUSEDSPUR
This equipment should be installed by an appropriately quali�ed
/ registered electrician.Fully read the instructions for proper
wiring before applying power.The warranty does not cover damage
from improper wiring or installation.
FROMVALVEENDSWITCH
*SEE NOTE 1
LRLS
TO VALVE
TO MANIFOLDPUMP
230VACTUATOR
UP TO 4 PER ZONE
DS-SB CONNECTED TO TIME CLOCK 2
DS-SB CONNECTED TO TIME CLOCK 2
DS-SB CONNECTED TO TIME CLOCK 1
TM4-TS4 CHANNEL TIME CLOCK
L N SL1 2
L N SL1 2
N L
TM4-TS
CH1CH2CH3CH4
230VAC
N.B. For boilers requiring a switched live signal connect LS to
permanent live and LR to the boiler.
Wiring Diagram - UH3
Wiring Centre Model: UH3
This equipment should be installed by an appropriately qualified
/ registered electrician.Ensure all wiring is correct before
applying power. The warranty does not cover any damages caused by
incorrect wiring and installation.
Want More Information?Call our support team on: +44 (0)1254
669090Or view technical specifications directly on our website:
www.heatmiser.com
PDF FAQ
Heating Professionals:Request a copy of our product installation
guide containing detailed technical specifications for our complete
product range:www.heatmiser.com/guide
Products Commonly Used With UH3 Wiring Centre:
Twitter: heatmiserukFacebook:facebook.com/thermostats
TM4-TS DS-SB
UH1-W
Other Heatmiser Wiring Centres:
UH1 UH2
