Technical Specifications; Brine Loop Dimensions; Brine Mixture - Zehnder ComfoFond-L Eco 350 L Manuel De L'installateur

8 Technical specifications

Description
Mass ComfoFond-L Eco
Unit dimensions (l x b x h)
Air inlet dimensions
Air outlet dimensions
Outside temperature operating area
IP class
Power supply
Maximum power consumption
Power consumption nominal
Energy consumption maximum
Energy consumption nominal
Heating capacity (water based)
Cooling capacity (water based)
Maximum sound power level
Ideal brine pressure
Brine volume ComfoFond-L Eco
Brine flow rate
Brine composition
Brine connections
Pump Class circulation pump
Maximum head circulation pump
Condensation drain connection
Colour
Geothermal collector: 100 m, 25/20.4 mm, 6 l/min
1
Geothermal collector: 100 m, 25/20.4 mm, 8 l/min
2
Linear adjustment of the energy consumption is possible
3
Q = 350 m /h, T
4 3
v
Q = 350 m /h, T
5 3
v
Q = 550 m /h, T
6 3
v
Q = 550 m /h, T
7 3
v

8.1 Brine loop dimensions

The ComfoFond-L Eco terrestrial heat collector (recommendations)
Type
ComfoFond-L Eco 350
ComfoFond-L Eco 550

8.2 Brine mixture

Desired ethylene glycol percentage
Maximum outside temperature [ºC]
-15
-20
-25
-30
EN - 28
ComfoFond-L Eco 350
46 kg
476 x 551 x 760 mm
180 mm
160 mm
-22ºC to 45ºC
44
220/230V AC, 50/60Hz, 1 phase
0.58 A
0,12 A
1
3 70 W
3 11 W 1
1864 W
4
1961 W
5
40 dB(A)
1.5 bar
+/- 2 l
6-8 l/min.
30%-50% ethylene glycol
water mixture
¾" straight male-threaded
A
7m
1¼" male-threaded with
32 mm adapter
RAL7035
= -12 °C, T
outside air brine flow
= 35 °C, T
outside air brine flow
= -12 °C, T
outside air brine flow
= 35 °C, T
outside air brine flow
Pipe type
25/20.4 PE
32/26.2 PE
Percentage [%]
35
40
45
50
= 8 °C, v
brine flow
= 12 °C, v
brine flow
= 8 °C, v
brine flow
= 12 °C, v
brine flow
Brine volume per 10 Minimum length pipe in
metre pipe [l] solid ground [m]
3,3 65
5,3 100
Higher concentrations of ethylene glycol can
cause flow-related problems on account of the
viscosity of the mixture. Irreversible damage will
be caused to the machine if concentrations in
excess of 50% are used.
ComfoFond-L Eco 550
47 kg
476 x 551 x 760 mm
180 mm
180 mm
-22ºC to 45ºC
44
220/230V AC, 50/60Hz, 1 phase
0.58 A
0,19 A
2
70 W
19 W 2
2670 W
6
2784 W
7
40 dB(A)
1.5 bar
+/- 2 l
8-10 l/min.
30%-50% ethylene glycol
water mixture
¾" straight male-threaded
A
7m
1¼" male-threaded with
32 mm adapter
RAL7035
= 6 l/min, T
supply air
= 6 l/min, T
supply air
= 8 l/min, T
supply air
= 8 l/min, T
supply air
Minimum length pipe
in sandy ground [m]
130
200
= 2,3 °C.
= 17,3 °C.
= 1,3 °C.
= 18,9 °C.