Installation and operating instruction
Gas condensing unit WTC-GB 15-B Compact and WTC-GB 25-B Compact
12 Technical documentation
83309302 1/2018-05 La
147-196
Hydraulic version
Components / settings
Explanation
KI3 (A)
WTC version K
Components:
WAS 100
Plate heat exchanger
External heating circuit pump
Settings:
Direct DHW circuit: yes
Direct heating circuit: yes
Factory setting:
P
2.2.1
: Load proportional
The condensing unit loads the DHW stor-
age tank or supplies the plate heat ex-
changer via the internal three-way valve.
The external heating circuit pump down-
stream of the plate heat exchanger supplies
heating circuit 1.
The condensing unit controls DHW loading
and heating circuit 1.
WTC connection:
MFA1: pump HK1
VA2: circulation pump WW1 (if available)
B1: external sensor
B2: plate heat exchanger sensor
B3: DHW sensor
T1: circulation sensor (if available)
KI3 (B)
WTC version K
Components:
WAS 100
Plate heat exchanger
Settings:
Direct DHW circuit: yes
Direct heating circuit: no
Factory setting:
P
2.2.1
: Load proportional
The condensing unit loads the DHW stor-
age tank or supplies the plate heat ex-
changer via the internal three-way valve.
The condensing unit controls DHW loading.
Extension modules control the heating cir-
cuits downstream of the plate heat ex-
changer.
WTC connection:
MFA1: circulation pump WW1 (if avail-
able)
B1: external sensor
B2: plate heat exchanger sensor
B3: DHW sensor
T1: circulation sensor (if available)