Hydraulic Connection For Models Fcx To A Single Heating Circuit - geminox FCX 22 C Technical Instructions

Example:
- Installation: 100 litres
- Domestic hot water tank: 5 litres
- Boiler: 16 litres
- Total water capacity: 121 litres
Conditions: Using a vessel pre-loaded to 1 bar
(under floor boiler = ground floor hea-
ting + 1 floor), heating safety valve
calibrated at 3 bars, installation filled
cold at 1 bar.
- Vessel efficiency calculation (R):
(
Safety Pressure - Filling pressure
R = ----------------------------------------------------------------------------------- -
Safety Pressure
( )
3 + 1 –
R = --------------------------------------- -
(
3 +

7.3 - Hydraulic connection for models FCX to a single heating circuit

Fig. 44
2
3
1) Boiler
st
2) 1 heating circuit flow
st
3) 1 heating circuit return
4) Cold water inlet
5) Filling system**
6) Filling valves **
7) Heating flow/return isolating valves **
8) Boiler drain
9) Condensate drain
10) Filling system outlet
)
( )
1 + 1
0 5 ,
=
)
1
1
7
2
3
7
11
+ 1) = the transformation of relative pressures into abolute
pressures
- Calculation of the useful capacity of the vessel
(Cu):
Cu
Cu
- Calculation of the real capacity of the vessel (Cr):
Cr
12 13
9
8
14
11) Sewer drain
nd
12) 2 heating circuit outlet/ Primary flow - (outlet
from the boiler to the domestic hot water produc-
tion system) - (option)
nd
13) 2 heating circuit return/ Primary return - (return
from the domestic hot water production system
to the boiler) - (option)
14) Isolating valve **
** accessories not supplied
- 27 -
INSTALLATION
×
= total volume expansion
3
× , ,
= 121 0 06 = 7 26dm
Cu
Cr = ------ -
R
,
7 26
,
= ----------- - = 14 5litres
0 5 ,
5 6
10
4