Glow-worm Ultracom2 cxi - Manual (Page 25)

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INSTALLATION
11.4 External accessories
e
Under no circumstances must any mains voltage
be applied to any of the terminals on the 24v
connection plug.
230
V
X17
X18
RT 24V T° ext BUS
BUS 24 V
1
2 3
4
Key
1 24V room thermostat connector
2 Ebus room thermostat connector or Ebus radio receiver
3 Outdoor sensor connector
4 Overheating safety connector for heating floor
• Fit external controls in accordance with the rules in force.
• When installing a non eBus controller, the link fitted to the
24V terminals (RT/24V) must be removed.
11.5 Testing the electrical connections
Carry out preliminary electrical system checks as below:
• Resistance to earth (<1 Ohm)
• Short circuit test (L-N)
• Resistance to earth (L-E)
• Polarity check