Weishaupt WTC-G 15 Series Quick start guide

Operating notes
Gas condensing unit WTC-G… 15 … 32-B
83305502 1/2018-03

2-36
1 User instructions ........................................................................................3
1.1 Symbols........................................................................................ 3
2 Safety................................................................................................................4
2.1 Safety instructions...................................................................... 4
2.2 When gas can be smelled ....................................................... 4
2.3 What to do if flue gas can be smelled .................................. 4
3 Operation........................................................................................................5
3.1 Switching the unit on and off................................................... 5
3.2 Operational display.................................................................... 6
3.3 Display and operating unit........................................................ 7
3.4 Display .......................................................................................... 8
3.5 Favourites level .........................................................................10
3.6 User level....................................................................................11
3.6.1 Info........................................................................................12
3.6.2 System operating mode ..................................................14
3.6.3 Heating circuits.................................................................. 15
3.6.4 Domestic hot water  ......................................................... 18
3.6.5 Statistic................................................................................ 19
3.6.6 Settings ...............................................................................20
3.7 Chimney sweep function........................................................21
4 Control options.........................................................................................22
4.1 Constant flow temperature ....................................................22
4.2 Weather compensated control .............................................22
4.3 Room temperature dependent control................................23
4.4 Weather compensated/Room control.................................23
5 Servicing ......................................................................................................24
5.1 System pressure.......................................................................25
6 Procedures for fault conditions.......................................................26
7 Terms.............................................................................................................28
8 Energy saving............................................................................................30
9 Notes..............................................................................................................31
10 Key word index.........................................................................................32

1 User instructions
3-36
1 User instructions
The manual is intended for the operator.
Work on the unit must only be carried out by personnel who have the
relevant training and instruction.
Children must not play with the unit.
1.1 Symbols
DANGER
Immediate danger with high risk.
Non observance can lead to serious injury
or death.
WARNING
Danger with medium risk.
Non observance can lead to environmental
damage, serious injury or death.
CAUTION
Danger with low risk.
Non observance can cause damage to the
equipment and injury to personnel.
Important information
Requires direct action
Result after an action
Itemisation
… Range of values

2 Safety
4-36
2 Safety
2.1 Safety instructions
Do not open front panel.
Installation, commissioning, service and repair of the system must
only be carried out by qualified personnel.
If operating in room-air-dependent mode, do not close or reduce
the supply air openings.
The combustion air must be free from aggressive compounds (e.
g. Halogens) and free of contaminants (e. g. dust).
2.2 When gas can be smelled
Avoid open flames and spark generation, for example:
do not operate light switches,
do not operate electronic equipment,
do not use mobile telephones.
Open doors and windows.
Close gas isolating valve.
Warn the inhabitants, do not ring door bells.
Leave the building.
Inform the heating contractor or gas supplier from outside of the
building.
2.3 What to do if flue gas can be smelled
Switch off unit and turn of the system.
Open doors and windows.
Notify your heating contractor or Weishaupt Customer Service.

3 Operation
5-36
3 Operation
3.1 Switching the unit on and off
Switching on the unit
Open flap1.
Open gas isolating valve2.
Switch on using switch3.
3
1
2
Switching off the unit
CAUTION
Damage to the heating system due to frost
The heating system may freeze while the unit is
switched off.
If there is a risk of frost, have the system drained
by a heating engineer.
Open flap1.
Switch off using switch3.
Close isolating valve2.
3
1
2

3 Operation
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3.2 Operational display
The light bar1 shows the operating status of the condensing unit.
1
Light bar Description
OFF No voltage supply or light bar deactivated
Green System is fault free
yellow Warning or fault (system is still in operation)
red Locked fault (system is in lockout)

3 Operation
7-36
3.3 Display and operating unit
turn navigation through parameter structure;
changing values
press briefly: confirm or save values
approx. 3seconds: exit value without saving
approx. 5seconds: return to the start screen

3 Operation
8-36
3.4 Display
Start screen
54.0
Boiler temperature
16:552016-06-23
Thursday
1.8 bar
50 °C
7 °C
°C
2
4
3
1
Automatic
heating operation
1Information:
Information from menu Info in the user level.
The upper 2 fields can be assigned as required [ch.3.6.1].
The bottom field is permanently assigned to the system pres-
sure.
2Level selection:
Favourites level
User level
Expert level
Chimney sweep function
3Status display:
Current status of the condensing unit.
4Temperature display:
Current boiler temperature of condensing unit.
Symbols
Favourites level / Create favourite
User level
Expert level
Chimney sweep function
Exit display
Reset value to factory setting
Information / Help text
Flame present

3 Operation
9-36
Service
If the service interval of the condensing unit is exceeded, a message
appears.
16:552016-06-23
Thursday
Burner control 1
Info 1
Service note
Notify your heating contractor or Weishaupt Customer Service.

3 Operation
10-36
3.5 Favourites level
Frequently used user level parameters can be assigned as favourites.
It is possible to assign a maximum of 6favourites. Factory pre-as-
signed favourites can be replaced by parameters from the user level.
Display favourites
Select Favourites level using dial knob and confirm.
Display changes to Favourites level.
16:552016-06-23
Thursday
1.8 bar
50 °C
7 °C
Boiler temperature
54.0°C
Automatic
heating operation
Favourites
System
operating
mode
Room
setpoint
temperature
Party/
Heating pause
Heating-
programs Holiday
DHW
Push
1 1 1
111
Assigning favourites
Select the desired parameter in the user level .
Select and confirm.
Turn the knob to select an existing favourite and replace by con-
firming.
A new favourite has been assigned.
DHW setpoint temperature
Normal
Setback
50 °C
40 °C
Replace which favourite?
OK = press | ESC = press 3 secs.
System
operating
mode
Room
setpoint
temperature
Party/
Heating pause
Heating-
programs Holiday
DHW
Push
1 1 1
111

3 Operation
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3.6 User level
Select User level using dial knob and confirm.
Display changes to the User level.
16:552016-06-23
Thursday
1.8 bar
50 °C
7 °C
Boiler temperature
54.0°C
User
Info
System
operating
mode
Heating
circuits
Domestic hot
water Statistic
Automatic
heating operation
Settings
Depending on the execution, hydraulics and control
variations, certain information and parameters are
hidden.

3 Operation
12-36
3.6.1 Info
Info
In menu Info, the information is read only.
External temperat-
ure
Current temperature at the ex-
ternal sensor.
DHW
temperature
Current temperature at the DHW
sensor.
DHW
Actual
outlet temperature
Current temperature at the DHW
outlet sensor.
Only with versionC and K
(WAS…Power).
DHW
Flow rate
Current DHW flow rate at the
water flow sensor of the con-
densing unit.
Only with version C.
Return flow tem-
perature
Circulation
Current temperature at the return
flow sensor of the circulation
line.
Heating circuits
- Flow temperature Current temperature at the flow
sensor of the corresponding
heating circuit.
- Room temperature
…
Current temperature at the cor-
responding room device or room
sensor.
- Room humidity … Current room humidity at the
corresponding room device2.
Rating Current heating capacity of the
condensing unit.
Boiler temperature Current temperature at the flow
sensor of the condensing unit.
System pressure Current system pressure.
Collector output Current heat output of the solar
system.
Collector
temperature
Current temperature at the col-
lector sensor.
Storage tank tem-
perature
bottom
Current temperature at the bot-
tom of the storage tank.

3 Operation
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Buffer storage
temperature top
Current temperature at the buffer
sensor at the top.
Buffer storage
temperature bottom
Current temperature at the buffer
sensor at the bottom.
De-couple temper-
ature
Current temperature at de-
couple sensor.
Plate heat
exchanger temper-
ature
Current temperature at the plate
heat exchanger.
The following information can be displayed on the start screen
[ch.3.4].
Select information required and confirm.
Select and confirm Info on start screen?.
Select information, which is to be replaced and confirm.
Information on start screen is replaced.

3 Operation
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3.6.2 System operating mode
System
operating
mode
Menu System operating mode determines the operating mode of the
entire system.
Standby Frost protection on
Heating off
DHW off
Summer Frost protection on
Heating off
DHW on
Automatic(1 Frost protection on
Heating on
DHW on
(1 Factory setting

3 Operation
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3.6.3 Heating circuits
Heating
circuits
A separate submenu appears for each heating circuit.
Operating
mode
determines the type of operation of the heating circuit.
If functions (heating, DHW) are deactivated in menu
System operating mode , the setting has effect
[ch.3.6.2].
Standby:
Frost protection on
Heating off
DHW off
Time program 1 … 3:
Frost protection on
Heating on
Temperature level according to selected time program.
Time programs can be set in parameter Heating
program .
DHW on
(Factory setting: Time program 1)
Summer:
Frost protection on
Heating off
DHW on
Comfort, Normal, Setback:
Frost protection on
Heating on
Temperature level according to the operating mode
set, independent of the time program.
DHW on
(1 Factory setting and setting range depending on heating circuit
set, see installation and operating manual for condensing unit.

3 Operation
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Heating-
programs
The heating program is used to stipulate the times of the
day when comfort, normal or setback heating is used.
Time program 1 … 3
The preset time programs can be customised.
Changing a time program:
Select time program using the knob and confirm.
Time bars are displayed.
Select week day(s) using the knob and confirm.
Time program can be edited.
The temperature of the level can be set using parameter
Room setpoint temperature.
Set time program required in parameter Operating
mode .
Party/
Heating pause
The temperature level of the heating program can be tem-
porarily changed (maximum23:45hours). After this time
the current heating program will be reactivated.
Select Function and set Party/Heating
pause .
Set level required in Room setpoint temperat-
ure .
Enter Start and End.
If the parameter is set to Off, the current heating pro-
gram is activated.
Room
setpoint
temperature
Room setpoint temperature for the temperature level se-
lected.
Comfort (factory setting: 22.0 °C)
Normal (factory setting: 21.0 °C)
Setback (factory setting: 16.0 °C)
The levels can be assigned to specific times of the day
using parameter Heating program .
Flow setpoint-
temperature
Flow setpoint temperature for the temperature level se-
lected.
Comfort(1
Normal(1
Setback(1
The levels can be assigned to specific times of the day
using parameter Heating program .
Only with control variation Constant flow temper-
ature.
(1 Factory setting and setting range depending on heating circuit
set, see installation and operating manual for condensing unit.

3 Operation
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Special
level
Defines the flow temperature set at special level. The
heating program is not effective.
When inputH1 is closed, the system heats up to the
special flow level set.
Only if input H1 is configured to Heating cir-
cuit1: Special level .
Holiday
Interrupt heating program for a certain period of time. The
level can be set to Setback or Frost during this
time.
Set Function to On.
Set Room setpoint temperature to Setback
or Frost.
Enter Start date and End date.
If the parameter is set to Off, the current heating pro-
gram is activated.
Heating curve
Flow setpoint temperature dependent on external
temperature [ch.4.2].
The display refers to the room setpoint temperature
Normal.
The heating curve gradient can be changed and / or it
can be moved in parallel.
Gradient (1
Parallel movement (1
Adapting the heating curve [ch.4.2]:
cold external temperature: change gradient
mild external temperature: change parallel movement
Only with control variation Weather dependent
control or Weather/Room control.
Su/Wi
change-over
Configure Summer-Winter change-over.
On (factory setting):
If the damped external temperature (tendentious course)
exceeds the Change-over temperature (factory
setting:19°C), the Operating mode changes to
Summer.
Off:
The operating mode set remains activated, independent
of the external temperature.
(1 Factory setting and setting range depending on heating circuit
set, see installation and operating manual for condensing unit.

3 Operation
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3.6.4 Domestic hot water
Domestic hot
water
DHW setpoint
temperature
DHW temperature for normal and setback operation.
Normal (factory setting: 50 °C)
Setback (factory setting: 40 °C)
Normal and setback operation can be assigned to spe-
cific times of the day using the DHW program.
With versionC only the DHW setpoint temperature for
normal operation is displayed.
DHW
Push
DHW Push is used to cover increased hot water demand,
e.g. during setback operation.
The DHW tank is heated once to the DHW setpoint tem-
perature set for normal operation.
DHW
program
The DHW program is used to stipulate the times of the
day when the DHW tanks is heated to normal temperat-
ure or setback temperature.
Change a time program:
Select week day(s) using the knob and confirm.
Time program can be edited.
Circulation
program
The circulation program is used to stipulate the time of
day when the circulation pump is switched on.
Change a time program:
Select week day(s) using the knob and confirm.
Time program can be edited.
DHW
operating
mode
Deactivate DHW preparation.
On (factory setting):
DHW preparation activated.
Off:
DHW preparation deactivated.

3 Operation
19-36
3.6.5 Statistic
Statistic
In the Statistic menu, daily, monthly and annual values relating
to the energy generated are displayed.
Energy WTC
Total
Total amount of heat generated by the condensing unit.
Energy
Solar
Solar system yield.
Recooling
Solar
Yield for re-cooling via collector circuit.

3 Operation
20-36
3.6.6 Settings
Settings
Time of day
Set current time of day.
Date
Set current date.
Summertime
Configure automatic change-over of summertime.
On (factory setting)
Off
WEM Portal
activate acces to WEM Portal.
The following information is required for access and is
displayed here:
Serial number
Access code
Set up WEM portal, see installation and operating manual
for condensing unit.
Light strip
Deactivate light strip on condensing unit.
On (factory setting):
Light strip activated.
Off:
Light strip deactivated.
Sensor
correction
External sensor
Correction of the current outside temperature.
If no optimal placement of the outdoor sensor is possible
or a measurement error is to be compensated, the meas-
ured outdoor temperature can be corrected.
Room sensor
Correction of the current room temperature.
If no optimal placement of the room sensor is possible or
a measurement error is to be compensated, the meas-
ured room temperature can be corrected.