MHS Boilers Ultramax 115, Руководство по эксплуатации и техническому обслуживанию, Страница: 35 / 46

MHS Boilers Ltd ©
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6 operation mode 2 optical I/O
night time reduction (no heating demand) 3 reset/programming push-button
heating mode (heating demand) 4 alarm LED
(flashing) burning 5 parameter/value selector
6 output status
7 current/desired parameter value
8 fault/parameter indication
9 input status
* P3 set load (in combination with KKM)
Operating mode (cover closed)
With the cover closed and by using the rotational switch (pos. No. 2) clockwise or anti-clockwise
the boilers’ operating mode can be set.
The operating modes are:-
standby the boiler switched off but frost protection is active
automatic the boiler can operate in heating or hot water mode
summer mode the boiler will only react to a hot water demand
service, low capacity the boiler will run at low capacity (adjusted by [P17])
service, high capacity the boiler will run at full capacity (adjusted by [P19]).
Information mode
With the cover open and by turning the rotational switch (Pos. No 5) clockwise or anti-clockwise it
is possible to read out certain information from the boiler management unit.
There are 10 possibilities. An arrow at the bottom of the LCD display will indicate which parameter
has been selected. The following parameters are readable:-
Parameter
P1 actual/setting flow temperature
P2 actual/setting direct hot water temperature (if used)
P3 set point temperature (* P3 set load in comb. with KKM)
P5 actual outside temperature (if used)
P8 temperature at the low velocity header (if used)
P9 actual / setting boiler capacity
P10 only for MHS trained service engineers.
Summary of input and output indications (cover open)