Thermal Control In The; Mode; Thermal Control In The " " Mode - Biasi RIVA PLUS M90S.24S Service Manual

Electronic control p.c.b.
9.11

Thermal control in the " " mode

See functioning with the function
control in the

mode

(sec. 9.12)
Fig. 39
9.12

Thermal control in the "

Supplies the ignition device
Fig. 40
24
Switch in the
water from the domestic hot
YES
YES
temperature higher than that
NO
Circulator off
Operates motorised valve
Ignition device off
" mode
Switch in the
YES water from the domestic hot
Circulator on
hot water outlet temperature
YES
function mode
Taking
water circuit?
Is primary circuit
selected?
Request for heat from
room thermostat?
Starts the circulator
Operates motorised valve
Supplies the ignition device
function mode
Taking
water circuit?
Is domestic
lower than that
required?
NO
NO
YES
Circulator off
NO
Ignition device off
NO
Ignition device off