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THERM CONNECT defrost
07
WOLF run around coil systems
7. THERM-CONNECT defrost
07.01 General description
The high efficiency run around coil system consists of two heat exchangers with a high counterflow ratio and a
series connection of the individual heat transfer stages.
The heat is transferred via an intermediate medium consisting of a water-glycol mixture between the exhaust air coil
and the outdoor air coil.
The brine mass flow is controlled by the frequency converter depending on the power demand of the BMS.
The power and frost protection control is also performed by the three-way mixing valve with high control accuracy.
This allows the brine mass flow to bypass the supply air register to prevent ice formation on the register.
All parameters are already programmed on the frequency converter. Since the pumps are designed separately for
each system, the flow rate must be adapted to the particular system. For this purpose, the flow rate is read off the
integrated TacoSetter and set as the maximum setpoint on the frequency inverter
flow rate" on page 17
ed to avoid damage to the pump.
Exhaust Air
DN
VL
Transfer points
A3
A4
Z1
" IG
Z2
" IG
A3
" IG
A4
" IG
TacoSetter
m³
Fabr. Taconova Bypass
Delivery limit
WOLF Geisenfeld
T
Three-way valve
AB
Fabr. Belimo
M
B
A
Z2
Z1
RL
VL
DN
Outside air
For this purpose, the system must be filled up to operating pressure and completely vent-
Exhaust Air
T
DN
Supply air
On-site BMS:
from external:
1x 1 x enable contact as normally open contact
1x power request 1-10 V DC
to external:
1x operating message portfree normally open contact for 230 V
1x collective fault signal port-free NC contact for 230 V
Verriegelung min.
Fabr. Fema DWR
P
High pressure pump
Fabr. EBARA
EVMSG
FU
Frequency converter
Fabr. Danfoss
FC102
WOLF Anlagen-Technik
Qualitätsmanagement
GmbH & Co.KG
Münchener Str. 54
zertifiziert nach
85290 Geisenfeld
DIN EN ISO 9001
Tel. 08452 / 99-0
Fax.08452 / 99-250
21.10.2019
F.Franz
2018
19.01.2019
Bearb.
Gepr.
Norm
Zust.
Änderung
Datum
Name
Diese Zeichnung darf ohne unsere ausdrückliche Genehmigung weder vervielfältigt, noch dritten Personen oder Konkurrenzfirmen im Original oder
als Kopie ausgehändigt werden. Eigentums- und Urheberrecht vorbehalten.
14
„07.05.03 Setting the maximum
Safety valve
Fabr. SYR 2115
P
Expansion tank
Fabr. Reflex S
Drainage and venting on site
MAßSTAB
Maßstab
Kom. THERM-CONNECT defrost
Datum
Name
Prinzipschema
F.Franz
Hochleistungs-KVS
AB-
Änderungen vorbehalten
Blatt
Bl
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