9
Boiler type.
For MAS18 and MAS15 boilers, this parameter is 0.
Model.
18 corresponds to model MAS18, 15 corresponds to model MAS15.
Boiler maximum output limit.
Model MAS18 can be limited to 18 - 15 - 12 - 9 - 6 - 3 kW.
Model MAS15 can be limited to 15 - 13 - 12 - 11 - 10 - 9 - 8 - 7 - 6 - 5 - 4 - 3 - 2 kW.
Underfloor heating.
If the boiler is underfloor heating ready this parameter will be 1 (an
especial limiter is required), otherwise it will be 0.
Outdoor temperature probe.
An outdoor temperature probe (not provided) can be
installed. In this case the parameter value will be 1.
Heating temperature differential.
The heating temperature differential can be selected from
2ºC to 10ºC. The default value is 2ºC.
Modulation.
Possible values: 1 (modulation ON), 0 (modulation OFF).
Units.
It is possible to change temperature units (ºC Celsius, ºF Fahrenheit). Default value: ºC.
AUTO heating regulation
. If a fan outdoor temperature probe is installed it is possible to
activate the auto heating regulation by shifting this parameter value to 1.
TIMAX.
Maximum water flow temperature in AUTO heating mode.
TIMIN.
Minimum water flow temperature in AUTO heating mode.
TEMAX.
Outdoor temperature from which the water flow temperature will be TIMIN.
TEMIN.
Outdoor temperature below which the water flow temperature will be TIMAX.
5.2 LIMITING BOILER MAXIMUM OUTPUT
The boiler is supplied for operation on maximum heat output of 15kW or 18 kW depending of the model. The
output can be rated below this maximum to match the heat load required. The setting is realized modifying P03
parameter. See “5.1. INSTALLATIONS PARAMETERS”.
WARNING
: ON INSTALLATIONS WHERE THE INCOMING POWER SUPPLY IS NOT CAPABLE
OF MAXIMUM LOAD THE BOILER CONTROL MUST BE RE-CONFIGURED TO LIMIT THE OUTPUT BEFORE
SWITCHING ON.
The boiler will not exceed this pre-set maximum but will still modulate in heating mode up to this level, adapting
to demand and ensuring economic operation.
Correct configuration for the selected output can be checked on the boiler display panel following the procedure
shown in “7.4 CHECKING RATED HEAT OUTPUT”.
Summary of Contents for MATTIRA MAS15
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