22
Accessories
Single
ISPESL safety kit (Italy only)
The kit includes a safety valve (4.5
bar), drain valve, connecting possibility
for expansion vessel, manometer,
ther
mometer, maximum water pressure
switch and thermostat.
All components are approved according
to the ISPESL requirements.
ISPESL gas valve (Italy only)
The kit includes an ISPESL gas valve
and connecting material.
The gas valve is approved according to
the ISPESL requirements.
TAS gas valve (Germany only)
The kit includes a TAS gas shut off
valve.
Minimum gas pressure switch
The kit includes a minimum gas
pres
sure switch, connecting material
and
wiring. The gas pressure switch
needs
to be connected inside the boiler.
Wiring for room fan and/or external
gas valve
The kit includes a wiring package for
connecting a room fan and/or external
gas valve to the boiler. The parameter
settings of contact QX2 must be chan-
ged (standard setting = alarm signal).
When using this functionality in combi-
nation with an OK/alarm signal, an
ad
ditional AGU2.550 clip-in is necessary.
In this case, the OK/alarm signal must
be connected to contact QX21 of the
AGU2.550 module.
Pump (3-step)
The kit includes a pump, connecting
material, gaskets and electrical wiring.
See the graph for the residual pump
head of the different boiler types
(next page).
Modulating pump
The kit includes a modulating pump
(R40/65-85 = PWM controlled,
R40/100-150 = 0-10V controlled),
con
necting material, gaskets and
wiring.
See next page for the pump
curves of
the different boiler types.
