14
07
THERM CONNECT
defrost
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
„07.05.03 Setting the maximum
flow rate“ on page 17
For this purpose, the system must be filled up to operating pressure and completely vent-
ed to avoid damage to the pump.
VL
RL
M
P
P
FU
AB
B
A
Outside air
Exhaust Air
Supply air
Exhaust Air
m³
A3
Z2
Z1
T
VL
RL
A4
T
Drainage and venting on site
Delivery limit
WOLF Geisenfeld
DN
Transfer points
Z1 " IG
Z2 " IG
A3 " IG
A4 " IG
Three-way valve
Fabr. Belimo
TacoSetter
Fabr. Taconova Bypass
High pressure pump
Fabr. EBARA
EVMSG
Frequency converter
Fabr. Danfoss
FC102
DN
Änderung
Qualitätsmanagement
DIN EN ISO 9001
zertifiziert nach
Zust.
Name
Datum
Norm
Gepr.
Bearb.
2018
Datum
Hochleistungs-KVS
Prinzipschema
Änderungen vorbehalten
MAßSTAB
AB-
Kom. THERM-CONNECT defrost
Maßstab
Name
Bl
Blatt
GmbH & Co.KG
WOLF Anlagen-Technik
85290 Geisenfeld
Münchener Str. 54
Fax.08452 / 99-250
Tel. 08452 / 99-0
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.
DN
19.01.2019
F.Franz
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
Safety valve
Fabr. SYR 2115
Verriegelung min.
Fabr. Fema DWR
Expansion tank
Fabr. Reflex S
21.10.2019
F.Franz
