Water System Treatment; Plumbing Connections - Sime ESTELLE HE 3 ErP Manual De Uso, Instalación Y Mantenimiento

6.7

Water system treatment

When filling and restoring the system it is good practice to use
water with:
– appearance: clear
– pH: 6,5 ÷ 8,5
– hardness: < 19.96°F
– the maximum allowed content of chlorides is 250 mg/l
– it is recommended that the total quantity of water to use, in-
cluding top-ups, with a total hardness of 20°F DOES NOT ex-
ceed 20 litres/kW
If the water hardness is more than 20°F, to calculate the total
quantity of water to use, use the formula: (20°F/hardness meas-
ured °F) x 20.
Example with water hardness of 25°F: (20/25) x 20 = 16 l/kW
If the water characteristics are different from those indicated,
it is advisable to use a safety filter on the water delivery pipe
to trap impurities, and a chemical treatment system to protect
against possible deposits and corrosion which could adversely
affect boiler operation.
the conversion factor between °dH (German degrees) and
NOTE:
°F (French degrees) is 0.56 (1°dH = 0.56 x °F).
m
CAUTION
It is useful to note the quantities of water to fill the
system and top it up, and the values of the quality of
water used.
6.8

Plumbing connections

The dimensions of the water fittings of Sime ESTELLE HE ErP
boilers are given below.
ESTELLE 3-4 ErP
B
M
A
SI
Description
A (mm)
B (mm)
C (mm)
D (mm)
M - System delivery
R - System return
SI - System drainage outlet
82
C
R
D
Fig. 25
ESTELLE HE
3 ErP 4 ErP
330
28
28
330
G 1"
G 1"
Rp 1/2"
ESTELLE 5-6-7 ErP
B
M
A
SI
Description
A (mm)
B (mm)
C (mm)
D (mm)
M - System delivery
R - System return
SI - System drainage outlet
m
CAUTION
The installation of a by-pass or flow switch (not sup-
plied) is mandatory for installations in systems with
thermostatic valves or two-way motor-driven valves.
The system's minimum flow rate, which must be guar-
anteed, must not be below the value shown below:
Description
System minimum flow rate (l/h)
3 ErP
4 ErP
5 ErP
6 ErP
7 ErP
EN
C
R
D
Fig. 26
ESTELLE HE
5 ErP 6 ErP 7 ErP
325
128
33
390
G 1"
G 1"
Rp 1/2"
ESTELLE HE
∆=30°C
750
900
1200
1400
1750