6
1 .4
FUNCTIONAL DIAGRAM (fig . 2)
18
31
29
M2
R3
18
31
29
M2
R3
8
12
3
11
13
14
16
17
1
2
15
21
22
19
20
M
R
G
S3
4
6
5
7
8
12
3
4
6
5
7
11
13
14
16
1
15
17
21
22
30
26
28
27
24
19
20
2
S3
G
R
M
EXPORT
ITALIA
25
23
23
KEY
1 Gas valve
2 Condensate drainage siphon
3 Heating return sensor (SR)
4 Fan
5 Heating delivery probe (SM)
6 Safety thermostat 100°C
7 Flue gas probe (SF)
8 Primary heat exchanger
11 Water pressure transducer
12 Automatic bleed
13 High-efficiency system pump
14 Boiler drain
15 Gas valve (not included)
16 Check valve
17 5 bar system relief valve
18 Check valve (not included)
19 Hydraulic compensator
20 Drain valve
21 8 litre expansion vessel
(admissible pre-charge
pressure given in PAR . 1 .3)
22 Automatic bleed
23 Oblique filter (not included)
24 Thermometer
25 0-10 bar pressure gauge with valve
26 Water max pressure switch (4 bar)
27 Safety thermostat 100°C
28 4.5 bar relief valve
29 Storage tank (not included)
30 Water min pressure switch (0.9 bar)
31
Storage tank pump (not included)
FITTINGS
M System delivery
R System return
G Gas
S3 Condensate outlet
M2 Hot water tank delivery
R3 Hot water tank return
600
1000
4500
4000
3500
3000
2500
2000
1500
PORTATA (l/h)
PERDITE DI CARICO TRA GLI
AT
TACCHI R3 e M2 (mbar
)
500
400
100
200
300
700
800
5000 5500
Murelle HE 92.5 R ErP
Murelle HE 110 R ErP
600
200
1600
1400
1200
1000
800
600
400
PORTATA (l/h)
PERDITE DI CARICO TR
A
GLI
AT
TA
CCHI R3 e M2 (mbar)
500
400
100
200
300
Murelle HE 50 R ErP
Murelle HE 70 R ErP
2200
2000
1800
600
200
1600
1400
1200
1000
800
600
400
PORTATA (l/h)
PERDITE DI CARICO TRA GLI
AT
TA
CCHI R3 e M2 (mbar
)
500
400
100
200
300
700
800
Murelle HE 35 R ErP
LOAD/FLOW RATE LOSS CURVES BETWEEN FITTINGS R3 AND M2
Fig. 2
WARNING:
The storage tank pump (31) must be
rated for the domestic hot water cir-
cuit losses (tank and pipes) and the
minimum required flow rate (3,800
l/h) .
The tank (29) must be controlled by an
RVS controller (configure the installer
parameter PAR 10) .
For indoors installations of the
MURELLE 110 BOX ErP ONLY,when
hooking up the tank (29):
- configure installer parameter PAR
2=6 .
- hook up the storage tank pump (31)
to terminals 18-20 of connector CN9
on the boiler board .
- move the capillary from the siphon
antifreeze probe (2) to the boiler so
that it acts as a hot water tank sensor .
FLOW RATE (l/h)
LO
AD
/FL
O
W
RA
TE
L
OS
S CURVES
BETWEEN
FITTINGS
R
3
and
M
2 (
mbar)
Summary of Contents for MURELLE 110 BOX ErP
Page 29: ...29 5 EXPLODED VIEWS FOR SPARE PARTS...
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