Zehnder Rittling ComfoFond-L Series, Руководство по установке

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19 - EN
8. Technical specifications
Description ComfoFond-L 350 ComfoFond-L 550
Mass ComfoFond-L 42 kg 42 kg
Unit dimensions (l x b x h) 476 x 551 x 760 mm 476 x 551 x 760 mm
Air inlet dimensions 180 mm 180 mm
Air outlet dimensions 160 mm 180 mm
Outside temperature operating area -22ºC to 45ºC -22ºC to 45ºC
IP class 44 44
Power supply 220/230V AC, 50/60Hz, 1 phase 220/230V AC, 50/60Hz, 1 phase
Maximum power consumption 0.58 A 0.58 A
Power consumption nominal 0.20 A 0.20 A
Energy consumption maximum * 70 W 70 W
Energy consumption nominal * 46 W 46 W
Energy consumption minimum setting * 5 W 5 W
Heating capacity 1800 W** 2500 W****
Cooling capacity 2000 W*** 3000 W*****
Maximum sound capacity 40 dB(A) 40 dB(A)
Ideal brine pressure 1.5 bar 1.5 bar
Brine volume ComfoFond-L +/- 2 l +/- 2 l
Brine flow rate 6-8 l/min. 8-10 l/min.
Brine composition 30%-50% ethylene glycol
water mixture 30%-50% ethylene glycol
water mixture
Brine connections ¾” conical male-threaded ¾” conical male-threaded
Pump Class circulation pump A A
Maximum head circulation pump 7m 7m
Condensation drain connection 1¼” male-threaded with
32 mm adapter 1¼” male-threaded with
32 mm adapter
Colour RAL7035 RAL7035
* Linear adjustment of the energy consumption is possible
** Qv = 350 m3/h, Toutside air = -12 °C, Tbrine flow = 8 °C, vbrine flow = 6 l/min, Tsupply air = 1 °C.
*** Qv = 350 m3/h, Toutside air = 35 °C, Tbrine flow = 12 °C, vbrine flow = 6 l/min, Tsupply air = 25,5 °C.
**** Qv = 550 m3/h, Toutside air = -12 °C, Tbrine flow = 8 °C, vbrine flow = 8 l/min, Tsupply air = 1 °C.
***** Qv = 550 m3/h, Toutside air = 35 °C, Tbrine flow = 12 °C, vbrine flow = 8 l/min, Tsupply air = 25 °C.
8.1 Brine loop dimensions
The ComfoFond-L terrestrial heat collector (recommendations)
Type Pipe type Brine volume per 10
metre pipe [l] Minimum length pipe in
solid ground [m] Minimum length pipe
in sandy ground [m]
ComfoFond-L 350 25/20.4 PE 3,3 65 130
ComfoFond-L 550 32/26.2 PE 5,3 100 200
8.2 Brine mixture
Desired ethylene glycol percentage
Maximum outside temperature [ºC]
Percentage [%]
-15 35
-20 40
-25 45
-30 50
Higher concentrations of ethylene gly-
col 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.