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5. Commissioning
Parameter
HRU connected (Optional)
p42
Mains detection phase
p43
Maintenance message
p44
Service operating hours
p45
Service burning hours
p46
ΔT Modulate down
p47
DHW stabilization time
p48
Display units
p49
Flue gas tempreature
p51
Detection of connected
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SCUs
and
(1)
Do not modify these factory settings unless absolutely necessary. E.g. to adapt the boiler to:Propane
DANGER
In the standard configuration the MCA Pro series
boiler can supply water temperatures up to 170°F,
when using a PVC flue system. A proper anti-
legionella functionality cannot be guaranteed when
the MCA Pro boiler is used in conjection with PVC
venting system.
5.7.2. Modification of the user-level parameters
Parameters p1 to p8 can be modified by the user in
order to meet heating system and DHW comfort needs.
CAUTION
Modification of the factory settings may be
detrimental to the functioning of the appliance.
MCA-Pro ISM Rv.4.1 2/2017
Description
0 = Not connected
1 = Connected
0 = Off
1 = On
Do not modify
Do not modify
Do not modify
50 to 104ºF
10 to 40ºC
10 to 100 seconds
0 = ºC/bar
1 = ºF/psig
0 = PVC
1 = CPVC 90°C / 194°F
2 = PP/SS 110°C / 230°F
0 = No detection
1 = Detection
MCA Pro 45/65/90/115
Adjustment range
65°C / 149°F
45
65
90
115
77
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