Connecting An External Interlock; Connecting Remote Alarm, Boiler Run Indication And External Pump Relay; Connecting A Pc/Pda - REMEHA Avanta 24c Installation And Service Manual

2. Installation
fig. 29 Wiring diagram for an external interlock
R000195-A
X7
fig. 30 Connecting remote alarm
R000196-A
fig. 31 X10 socket connector
LT.AL.W7H.000.035
26
X9
R000195-A
R000196-A
LTALW7H000035b
2.7.8

Connecting an external interlock

The Remeha Avanta Plus is supplied with an external interlock
function. A volt free switching device (i.e. external gas pres-
sure switch, safety thermostat for under floor heating) can be
connected to connectors 5 and 6. When this circuit is open the
boiler will shut down with the display showing (code 9) and
will restart when the circuit is closed.
2.7.9 Connecting remote alarm, boiler run indication
and external pump relay
As standard the boiler is supplied with 3 volt free connectors
on terminal X7. They can be used for an external gas valve,
remote alarm and boiler run indication.
• C ommon alarm signal connect to connectors 1 and 2 on
terminal X7. Contact closes on lock out. For this purpose set
parameter 24 from 0 to 1.
• B oiler run signal connect to connectors 1 and 3 on terminal
X7. Contact closes on heat demand. For this purpose set
parameter 24 from 0 to 2.
• C onnect an external gas valve to connectors 1 and 3 on
terminal X7. Contact closes when the gas valve is activated.
For this purpose set parameter 24 from 0 to 3.
• C onnect an external pump relay* to connectors 1 and 3 on
terminal X7. Contact closes on heat demand. For this pur-
pose set parameter 24 from 0 to 4.
 * n ever connect a pump directly to connectors 1 and 3
on terminal X7, but only via a relay.
2.7.10

Connecting a PC/PDA

Using the optional Recom interface package a PC or PDA can
be connected to the X10 "telephone connector". Using the
Recom PDA service software you can load, change and down-
load various boiler settings and readings. See the user instruc-
tions supplied with the software/hardware.
X10
Remeha Avanta Plus
127768-271011