DOMUSA TEKNIK Dualtherm 25, Инструкция по установке и эксплуатации

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8 OPERATION
DualTherm is set by default as an “Only Heating” boiler. In option, it is possible to connect a DHW tank
( Sanit ) and/or a BT buffer tank and/or a BT DUO tank and/or a BIO Hydraulic Kit to increase the
features offered.
8.1 “Only heating” operation
In this operation mode, it is needed to set a temperature of the boiler (see
“Boiler temperature set
point selection”
), of the room thermostat ( TA1 ) or of the LAGO FB OT+ remote control (if there is
any connected) in order to start the boiler up.
It is possible to disable the heating service (
Summer
mode) by setting to "
OFF
" the boiler
temperature set point. In this operating mode only the DHW service is available if there is a DHW
tank installed.
NOTE: When the heating service is disabled, they will be disabled all the circuits of the BIO
Hydraulic Kit, if there is any connected.
8.2 Operating with a Sanit DHW tank (Option)
DualTherm
boiler could be installed together with a DHW tank
Sanit
, within the product range
offered by DOMUSA TEKNIK , to obtain Domestic Hot Water service. Follow the instructions
described in section
“Installing a Sanit hot water tank”
to assure a correct installation.
In this operating mode, it is needed to set a DHW temperature set point (see
“DHW temperature set
point selection”
) in order to start DHW service up. The burner will start running and the DHW pump
or valve will switch on if the boiler's temperature overtakes 70 ºC and it is higher than the one into
DHW tank. When DHW tank temperature reaches the set point temperature, after a period of time
(parameter
P.16 of “Technical Menu”), the boiler will be able to heat the heating installation by
switching on the heating pump. The burner modulates the heat output level to maintain the boiler
temperature set point. The heating pump will stop when the room temperature reaches the set
point set at the room thermostat or remote control (if there is any connected).
It is possible to disable the DHW by setting to "
OFF
" the DHW temperature set point.
NOTE: To assure the optimal DHW service, the heating service will not be available while the
DHW service is activated to heat the DHW tank.