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5. Start-up
0
2
4
6
8
E
1
TEMP.: 68°
2
1
D
2
#
F
% $
AUTO
J
I
5"
"Installer" level - #PRIMARY LIMITS menu
Parameter
Adjustment range Description
20 to 90 °C
BOILER MAX
(1)
0-100%
MAX.R.HEAT(%)
0-100%
(1)(2)
MAX.DHW(%)
1000-5000 rpm
(1)
MIN.VENT.
(1)
1000-7000 rpm
MAX.VENT.BOIL
1000-7000 rpm
(1)
MAX.VENT.DHW
(1)
1000-5000 rpm
START SP.
20-100%
MAX.PUMP SPEED
(1)
20-100%
MIN.PUMP SPEED
(1)
(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED
(2) The parameter is only displayed if P.DHW is set to PUMP
Type of gas used Parameter
Gas H (G20)
MIN.VENT.
MAX.VENT.BOIL rpm 4500
MAX.VENT.DHW rpm 4500
START SP.
Gas L (G25)
MIN.VENT.
MAX.VENT.BOIL rpm 4400
MAX.VENT.DHW rpm 4400
START SP.
Propane (G31)
MIN.VENT.
MAX.VENT.BOIL rpm 4400
MAX.VENT.DHW rpm 4400
START SP.
82
10
12
14
16
18
20
22
24
SUNDAY 11:45
!
:
<
STD
C002235-F-04
Maximum boiler temperature
Maximum boiler output during heating
Maximum boiler output in DHW
Minimum fan speed
Maximum fan speed setting in heating
Maximum fan speed setting in domestic hot
water
Optimum start-up speed setting
Maximum pump speed
Minimum pump speed
Unit MCA 15 MCA 25 MCA 25/28 MI
rpm 1800
rpm 3700
rpm 1800
rpm 3700
rpm 2200
rpm 3700
5.7.3.
"Professional" settings
1. Access the "installer" level: Press key - for around 5 seconds.
2. To set the following parameters:
Turn the rotary button to scroll through the menus or
4
modify a value.
Press the rotary button to access the menu selected
4
or confirm a value modification.
¼ For a detailed explanation of menu browsing, refer
to the chapter: "Browsing in the menus", page 62
1800
1800
5600
4600
5600
6200
3000
3000
1800
1800
5300
4300
5300
5900
3000
3000
1800
1800
5300
4300
5300
5900
3000
3000
MCA 15 - MCA 25 MCA 25/28 MI
Factory setting Customer setting
75 °C
100%
100%
See table below
See table below
See table below
See table below
See table below
See table below
29/04/2010 - 300022146-001-B
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