Initial pressure of the
expansion vessel
Volume of the opened expansion vessel depending on the volume of the installation (in litres)
100
125
150
175
200
250
300
> 300
0.5 bar
4,8
6,0
7,2
8,4
9,6
12,0
14,4
Volume of the installation x 0,048
1 bar
8,0
10,0
12,0
(1)
14,0
16,0
20,0
24,0
Volume of the installation x 0,080
1.5 bar
13,3
16,6
20,0
23,3
26,6
33,3
39,9
Volume of the installation x 0,133
(1) Factory configuration
4.6.5.
Connecting the condensate discharge pipe
1. Mount a standard drainage pipe, Ø 32 mm or more, leading to the
mains drainage system.
2. Mount the flow collector.
3. Into this, insert the condensate collector hose coming from the
siphon
j
and the safety valve
ê
.
4. Into this, insert the discharge hose from the disconnector.
5. Mount a trap or a siphon in the discharge pipe.
CAUTION
Do not make a fixed connection owing to maintenance
work on the siphon.
4
Do not plug the condensate discharge pipe.
4
Set the discharge pipe at a gradient of at least 30
mm per metre, maximum horizontal length 5 metres.
4
Do not drain condensation water into a roof gutter at
any time.
4
Connect the condensate discharge pipe in
accordance with prevailing standards.
4.6.6.
Filling the siphon
1. Remove the siphon.
2. Fill the siphon with water. This must be filled up to the level
markers.
3. Re-assemble the siphon.
CAUTION
4
Fill the water siphon before starting the boiler to avoid
combustion products escaping from the boiler.
4
Mount the vent hose above the siphon.
T001873-C
T001523-B
4. Installation
MCA 15 - MCA 25 MCA 25/28 MI
24
29/04/2010 - 300022146-001-B
