Air Pressure Differential Sensor (Lds); Connections - REMEHA 610 ECO Technical Information

Remeha Gas 610 ECO

8.2.8 Air pressure differential sensor (LDS)

At the start of a heat demand the system checks
whether the LDS input is open. If not, there are (max.) 4
restarts, before the boiler module is locked out (E61).
If the LDS input is open, the fan will speed up and a
pressure difference is built up across the boiler module.
When the LDS control speed is reached the LDS input
must close. If not, there are (max.) 4 restarts, before the
boiler module is locked out (E08).
Once started the LDS function is switched off for modu-
lation purposes.

8.3 Connections

The terminal strips and boiler connectors can be seen
once the control box cover is removed. The left-hand
terminal strip (X29) is used for 24-volt connections. The
right-hand terminal strip (X27) is used for 230-volt con-
nections. All external connections (low and high voltage)
are made on these terminal strips (see fig. 16). The
various connection options are detailed in the following
sections.
g
Important!!
Each boiler module must be con-
nected separately.
fig. 16 Terminal strip per module
04.31H.79.00001
24