38
parameter is very important, because setting
of too high value may cause the risk of
burning the users with hot utility water. On
the other hand, too low value of this
parameter will cause that in case of boiler
overheating excessive heat cannot be
removed to HUW container.
When designing HUW system,
possibility of regulator failure should
be considered. In case of regulator
failure, water in HUW container may
heat-up to hazardous temperature,
which may create the risk of
burning.
THEREFORE,
SOME
OTHER
PROTECTION (E.G. THERMOSTATIC
VALVES) SHOULD BE USED.
15.5
Increase of boiler temperature by
HUW, mixer circuit and buffer
status
This parameter determines by how many
degrees the preset boiler temperature will be
increased to fill HUW container, buffer and
mixer circuit. Temperature is increased only
if required. Once the preset boiler
temperature has reached sufficient value to
fill HUW container, buffer and mixer circuit,
the regulator stops its further increase.
The process of increasing preset
boiler temperature to fill HUW
container is indicated by "C" letter
on main display.
15.6
HUW operations ext.
Once HUW container has been filled and
HUW pump has been stopped, a boiler
overheating risk may occur. It occurs in case
the pre-set HUW temperature is higher than
the pre-set boiler temperature. This issue
refers particularly to the operation of HUW
pump in SUMMER mode, when CH pump is
OFF. To cool down the boiler, HUW pump
operation may be extended by the time set
in
"HUW pump operation extension time.
It is not recommended to set this
parameter at the value other than
"0" if preset HUW temperature is
lower
than
preset
boiler
temperature.
15.7
Heat exchanger
When the parameter
Heat exchanger
is set
at
,YES”,
CH pump does not stop, when HUW
priority is set nor in HUW SUMMER mode.
This parameter is intended only for hydraulic
systems with heat exchangers, where HUW
container is installed at the side of closed
circuit, and heat exchanger isolates open
boiler circuit from close CH circuit.
Continuous pump operation allows heat
transfer from the boiler through the heat
exchanger to HUW container.
16
MIXER SERVICE SETTINGS
16.1
MIXER SUPPORT
Following options are available:
OFF
– mixer servo and mixer are OFF,
ON
– is used when the mixer circuit supplies
CH radiator system. Max. temperature of
mixer circuit is not limited and mixer is fully
opened
during
alarms
e.g.
boiler
overheating.
Note: do not activate this option if the
pipes used are not high-temperature
resistant. In such conditions it is
recommended to set "MIXER SUPPORT"
at "Floor On.
Floor On
– is used when the mixer circuit
supplies underfloor heating system. Max.
temperature of mixer circuit is limited to the
value set in the parameter of
Max. pre-set
mixer temp.
Note: upon selection of the option of
Floor
On
" set the parameter
Max. preset mixer
temp.
at such value, which will prevent the
floor destruction and occurrence of burn risk.
Pump only
–
once the mixer circuit
temperature has exceeded the value set in
"
mixer preset value
"
, power supply to the
mixer pump stops. Once the mixer circuit
temperature has dropped by 2 ºC, the pump
switches on again. This option is mainly used
to control the underfloor heating pump in
case it works with thermostatic valve without
servo. However, it is not a recommended
manner of operation. It is recommended to
use a standard heating circuit composed of
valve, servo and mixer pump for underfloor
heating. Other possible solution is the use of
Summary of Contents for ecoMAX810P3-L TOUCH
Page 2: ......
Page 8: ...8 REGULATOR INSTRUCTION MANUAL ecoMAX810P3 L TOUCH...
Page 20: ...REGULATOR INSTALLATION AND SERVICE SETTINGS MANUAL ecoMAX810P3 L TOUCH...
Page 46: ......
Page 47: ...47...