BDR THERMEA GTW-21 BACNet Foglio di istruzioni
en Configuration manual
fr Notice de configuration
de Konfigurationsanleitung
es Manual de configuración
it Manuale di configurazione
pt Manual de Configuração
nl Configuratiehandleiding
GTW-21 BACNet
Contents
1 About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 Symbols used in the manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2 Description of the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.1 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.1.1 L-Bus connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3.1.2 RJ45 connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.1.3 Reset button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1.4 Status LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4.1 Main appliance information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4.2 Single appliance or cascade configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2.1 Temperature and power control of the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2.2 Reading out the water pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.2.3 Reading out the flow and return temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2.4 Reading out the status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.3 Zoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.3.1 Zoning addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.3.2 Examples of zone addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.3.3 Main zone info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3.4 Main zone counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3.5 Set temperature without outdoor temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3.6 Fixed flow temperature setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.3.7 Room temperature control in a zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4 Main cascade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.5 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.6 Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.6.1 Fallback scenario . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
4.6.2 Using the appliance with 0-10 V signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
1 About this manual
1.1 Symbols used in the manual
This manual contains special instructions, marked with specific symbols.
Please pay extra attention when these symbols are used.
Danger of electric shock
Risk of electric shock that may result in serious personal injury.
Caution
Risk of material damage.
Important
Please note: important information.
The symbols mentioned below are of lower importance, but they can help
you navigate or give useful information.
See
Reference to other manuals or pages in this manual.
en 1 Contents
2 7763253 - v.02 - 10032023
2 Description of the product
2.1 General description
The gateway is designed to operate as a communication interface
between a heating and/or cooling appliance and the building management
system (BMS) based on communication protocol BACNet®.
Fig.1 Overview
AD-3001660-01
90 80 90
2
1 3
1. Building management system
2. Gateway
3. Heating and/or cooling appliance
The gateway has the following features:
Monitor the appliances on the BMS.
Control the settings of the appliances from the BMS.
The main components are:
1L-Bus connectors
2RJ45 connector
3Status LED
4Reset button
3 Installation
3.1 Electrical connections
3.1.1 L-Bus connector
The L-Bus connector is used to connect to an appliance.
3.1.2 RJ45 connector
The RJ45 connector is used to connect an Ethernet network. The
connector has status lights. These show the current status:
Fig.2 GTW-21 BACNet
AD-3001614-01
4
3
2
1
50
50
80
60
Fig.3 L-Bus connector
AD-3001661-01
Fig.4 RJ45 connector
AD-3001662-01
2 Description of the product en
7763253 - v.02 - 10032023 3
Tab.1 Status
Light Description Status
Solid green High speed connection detec
ted
Solid yellow Low speed connection detec
ted
Blinking green Activity for high speed con
nection
Blinking yellow Activity for low speed connec
tion
Off No connection or activity
3.1.3 Reset button
The gateway has a reset button. This gives the possibility to restore the
factory defaults.
1. Press the reset button for 15 seconds.
Reset to the factory defaults starts.
3.1.4 Status LED
The gateway has a status LED. This shows the current status:
Tab.2 Status
Light Description Status
Solid green Normal operation
Solid red Internal failure
Blinking green Connection error (RJ45)
Blinking red Connection error (L-Bus)
4 Configuration
4.1 Main appliance information
You can find all the relevant object instances here for the main appliance.
Display codes in this manual are the same as friendly names referenced in
other manuals.
The relevant object instances for cascade and zoning are found in
the other chapters.
R is read and W is write access.
Tab.3 Appliance object instances
Object in
stance
Data type Description Resolution / Format Min - Max Access Display
code
272 Analog
Input
Current system power re
ceived from consumer man
ager of the zone
1% 0 to 100 R
275 Analog
Input
Bitfield heat demand per
zone; Nbr zone, power set
point, temp setpoint and type
of heat demand
0 - 2 R
277 Analog
Input
List of error for all connected
devices in the system
0 - 2 R
en 4 Configuration
4 7763253 - v.02 - 10032023
Object in
stance
Data type Description Resolution / Format Min - Max Access Display
code
279 Analog
Input
List of output status 1 infor
mation of all connected devi
ces in the system
See table ''Bitfields of
279'' below
R
384 Analog
Input
Instantaneous outside tem
perature
0,01 °C -70 - 70 R
385 Analog
Input
Seasonal mode active (sum
mer / winter)
Winter
Frost protection
Summer neutral band
Summer
0 - 3 R
400 Analog
Input
Flow temperature of appli
ance.
0,01°C -327,67 - 327,68 R
401 Analog
Input
Return temperature of appli
ance. The temperature of the
water entering the appliance.
0,01°C -327,67 - 327,68 R AM018
402 Analog
Input
Temperature of the exhaust
gas leaving the appliance
0,1°C 0 - 250 R AM036
403 Analog
Input
Heat pump flow temperature 0,01°C -20 - 120 R HM001
404 Analog
Input
Heat pump return tempera
ture
0,01°C -20 - 120 R HM002
408 Analog
Input
Flow temperature setpoint
Domestic Hot Water
0,01°C 0 - 655,35 R DM004
409 Analog
Input
Water pressure of the primary
circuit.
0,1 bar 0 - 3 R AM019
411 Analog
Input
Current main status of the ap
pliance.
See table ''AM012 Status'' R AM012
412 Analog
Input
Current sub status of the ap
pliance.
See table ''AM014 Sub-
status''
R AM014
413 Analog
Input
Actual relative power of the
appliance
% 0 - 100 R AM024
415 Analog
Input
Actual flame current meas
ured
0,1 µA 0 - 25 R GM008
419 Analog
Input
Total number of heat genera
tor starts for heating and do
mestic hot water
1 Units 0 - 65534 R PC002
421 Analog
Input
Total Number of hours that
the appliance has been pro
ducing energy for central
heating and DHW
1 Hours 0 - 65534 R PC003
423 Analog
Input
Number of starts of the first
electrical backup stage
1 Units 0 - 4294967295 R AC030
425 Analog
Input
Number of operating hours of
the first electrical backup
stage
1 Hours 0 - 4294967295 R AC028
427 Analog
Input
Number of starts of the sec
ond electrical backup stage
1 Units 0 - 4294967295 R AC031
429 Analog
Input
Number of operating hours of
the second electrical backup
stage
1 Hours 0 - 4294967295 R AC029
431 Analog
Input
Number of hours that the ap
pliance has been on mains
power
1 Hours 0 - 4294967295 R AC001
433 Analog
Input
Energy consumed for central
heating
1 kWh 0 - 4294967295 R AC005
435 Analog
Input
Energy consumed for domes
tic hot water
1 kWh 0 - 4294967295 R AC006
437 Analog
Input
Energy consumed for cooling 1 kWh 0 - 4294967295 R AC007
4 Configuration en
7763253 - v.02 - 10032023 5
Object in
stance
Data type Description Resolution / Format Min - Max Access Display
code
439 Analog
value
Total energy consumed 1 kWh 0 - 4294967295 R/W
441 Analog
value
Energy consumed by backup 1 kWh 0 - 4294967295 R/W AC018
443 Analog
value
Total thermal energy deliv
ered
1 kWh 0 - 4294967295 R/W
445 Analog
value
Thermal energy delivered for
central heating
1 kWh 0 - 4294967295 R/W AC008
447 Analog
value
Thermal energy delivered for
domestic hot water
1 kWh 0 - 4294967295 R/W AC009
449 Analog
value
Thermal energy delivered for
cooling
1 kWh 0 - 4294967295 R/W AC010
451 Analog
value
Energy delivered by electrical
or hydraulic backup
1 kWh 0 - 4294967295 R/W AC019
459 Analog
value
The current pump speed % 0 - 100 R/W AM010
460 Analog
input
Actual power of the appliance 1 kW 0 - 4294967295 R AM047
462 Analog
input
Calculated instantaneous
COP
0,001 0 - 1 R HM031
463 Analog
input
COP threshold which triggers
the switch between heat
pump and boiler operation
0,001 0 - 1 R HM032
Tab.4 Bitfields of 279
279 Bitfield
List of output status 1 information of
all connected devices in the system
0: Flame On
1: Heat pump On
2: Electrical Backup 1 On
3: Electrical Backup 2 On
4: DHW electrical backup On
5: Service required
6: Power down / Reset needed
7: Water pressure Low
Tab.5 AM012 - Status
Code Display text Explanation
0 Standby The appliance is in standby mode.
1 Heat Demand A heat demand is active.
2 Generator start The appliance starts.
3 Generator CH The appliance is active for central heating.
4 Generator DHW The appliance is active for domestic hot water.
5 Generator stop The appliance has stopped.
6 Pump Post Run The pump is active after the appliance stopped.
7 Cooling Active The appliance is active for cooling.
8 Controlled Stop The appliance does not start because the starting conditions are not met.
9 Blocking Mode A blocking mode is active.
10 Locking Mode A locking mode is active.
11 Load test min Low load test mode for central heating is active.
12 Load test CH max Full load test mode for central heating is active.
13 Load test DHW max Full load test mode for domestic hot water is active.
15 Manual Heat Demand Manual heat demand for central heating is active.
16 Frost Protection Frost protection mode is active.
17 Deaeration The deaeration program operates.
en 4 Configuration
6 7763253 - v.02 - 10032023
Code Display text Explanation
18 Control unit Cooling The fan runs to cool the inside of the appliance.
19 Reset In Progress The appliance resets.
20 Auto Filling The appliance fills the installation.
21 Halted The appliance has stopped. It must be reset manually.
22 Forced calibration The forced calibration function is active.
23 Factory test The factory test mode is active.
24 Hydronic balancing The hydronic balancing mode is active.
200 Device Mode The service tool interface controls the functions of the appliance.
254 Unknown The actual state of the appliance is undefined.
Tab.6 AM014 - Sub status
Code Display text Explanation
0 Standby The appliance waits for a process or an action.
1 AntiCycling The appliance waits to restart, because there were too many consecutive
heat demands (anti-short cycle).
2 CloseHydraulicValve An external hydraulic valve is opened, when this option is connected to the
appliance. An external option board must be connected to drive the valve.
3 ClosePump The appliance starts the pump.
4 WaitingForStartCond. The appliance waits for the temperature to meet the start conditions.
10 CloseExtGasValve An external gas valve is opened, when this option is connected to the ap
pliance. An external option board must be connected to drive the valve.
11 StartToGlueGasValve The fan runs faster, before the flue gas valve is opened.
12 CloseFlueGasValve The flue gas valve opens.
13 FanToPrePurge The fan runs faster to pre-purge.
14 WaitForReleaseSignal The appliance waits for the release input to close.
15 BurnerOnCommandToSu A burner start command is sent to the safety core.
16 VpsTest Valve proving test is active.
17 PreIgnition Ignition starts before the gas valve opens.
18 Ignition Ignition is active.
19 FlameCheck The flame detection is active after the ignition.
20 Interpurge The fan runs to purge the heat exchanger after a failed ignition.
30 Normal Int.Setpoint The appliance operates to reach the desired value.
31 Limited Int.Setpoint The appliance operates to reach the reduced internal desired value.
32 NormalPowerControl The appliance operates on the desired power level.
33 GradLevel1PowerCtrl The modulation is stopped due to a faster heat exchanger temperature
change than gradient level 1.
34 GradLevel2PowerCtrl The modulation is set to low load due to a faster heat exchanger tempera
ture change than gradient level 2.
35 GradLevel3PowerCtrl The appliance is in blocking mode due to a faster heat exchanger tempera
ture change than gradient level 3.
36 ProtectFlamePwrCtrl The burner power is increased due to a low ionisation signal.
37 StabilizationTime The appliance is in stabilisation time. Temperatures should stabilise and
temperature protections are switched off.
38 ColdStart The appliance runs at start load to prevent cold start noise.
39 ChResume The appliance resumes central heating after a domestic hot water interrup
tion.
40 SuRemoveBurner Burner demand is removed from safety core.
41 FanToPostPurge The fan runs to purge the heat exchanger after the appliance stopped.
42 OpenExtFlueGasValve External gas valve closes.
43 StopFanToFlueGVRpm The fan runs slower, before the flue gas valve is closed.
44 StopFan The fan has stopped.
45 LimitedPwrOnTflueGas The power of the appliance is decreased to lower the flue gas temperature.
46 AutoFillingInstall. The auto refill device fills the installation. The installation was empty.
4 Configuration en
7763253 - v.02 - 10032023 7
Code Display text Explanation
47 AutoFillingTopUp The auto refill device tops up the installation. The water pressure in the in
stallation was low.
48 Reduced Set Point The desired flow temperature is reduced to protect the heat exchanger.
49 Offset adaption Gas valve modulator offset correction is in progress.
60 PumpPostRunning The pump is active after the appliance stopped in order to bring the re
maining heat into the system.
61 OpenPump The pump has stopped.
62 OpenHydraulicValve The external hydraulic valve closes.
63 SetAntiCycleTimer
65 Generator relieved
66 HPFlowOverTMaxBckpON
67 ExtCondStopHeatPump
68 HybridStopHeatPump
69 DefrostWithHP
70 DefrostWithBckp
71 DefrostWithHPAndBckp
72 PumpSourceBackupRun
73 HPFlowOverTMax
74 SourcePumpPostRun
75 HumiditySensorStopHP
76 WaterFlowStopHP
78 HumidityInt.Setpoint
79 Generators relieved
80 HPRelievedForCooling
81 OutsideTempStopHP
82 HeatPumpOffOverLimit
83 DeAirPumpOnValveCH
84 DeAirPumpOnValveDhw
85 DeAirPumpOffValveCH
86 DeAirPumpOffValvDhw
88 BLInputBackupLimited
89 HPLimited
90 BackupAndHPLimited
91 BLInputLowTariff
92 PV-WithHP
93 PV-WithHPAndBckp
94 BLInputSmartGrid
95 WaitingForWaterpress The boiler is in wait state until the water pressure is sufficient. The deaera
tion program will not start.
96 NoProducerAvailable Heating power is not available in the system.
97 Increased min power
98 Decreased max power
102 FreeCoolingPumpOff
103 FreeCoolingPumpON
104 SourcePumpPreRunning
105 Calibration The electronic combustion process calibrates the combustion.
106 Blocking active
107 Warm up After the heat demand, the compressor will start up (ON, but not allowed to
go OFF) for a certain time.
108 Defrost curative Evaporator curative defrosting is active. The heating gas valve (HGV) is
opened to diverte all energy from the compressor to the evaprorator to re
move the ice.
en 4 Configuration
8 7763253 - v.02 - 10032023
Code Display text Explanation
109 Defrost preventive Evaporator preventive defrosting is active. The heating gas valve (HGV)
will open and close to distribute the compressor energy in a given cycle be
tween the DHW tank and the evaporator to prevent icing.
200 Initialising Done Initialisation is finished.
201 Initialising Csu The CSU is initialising.
202 Init identifiers The identifiers are initialising.
203 Init.BL.Parameter The blocking parameters are initialising.
204 Init safety unit The safety unit is initialising.
205 Init blocking The blocking is initialising.
254 StateUnknown The sub state is undefined.
255 SuOutOfResetsWait1Hr The safety unit is blocking due to too many resets. Wait for 60 minutes or
turn the power off and on again.
4.2 Single appliance or cascade configuration
4.2.1 Temperature and power control of the system
If you control the system with the gateway, the heat demand from
the zones will be ignored.
Tab.7 Temperature and power
Object in
stance
Data type Description Resolution / Format Access
256 Analog value Power % R/W
257 Analog value Temperature 0.01 °C R/W
258 Analog value Algorithm See
Tab.8, page 9
R/W
259 Analog value Heat demand See
Tab.9, page 9
R/W
272 Analog input Actual power input 1 R
Tab.8 Algorithm type
Value Description
0 Remote management for both temperature and power
1 Remote management for Power
2 Remote management for Temperature
3 Remote monitoring only, none.
Tab.9 Heat demand type
Value
0 Standby
7 Heating
8 Cooling
The requested power on object instance 256 is related to the
minimum and maximum power of the system. You can use object
instance 272 to check the actual power input after a request.
Important
Object instance 258 must be written first. If 258 is still set to 3, the
other object instances can not be used.
4 Configuration en
7763253 - v.02 - 10032023 9
Tab.10 Temperature and power control examples
Object instance 258 256 257 259 Comment
I only want to monitor my sys
tem
3 x x x
I want to switch Off my system 0 x x 0
I want to heat my system with
minimum power
1 0 = 0% x 7 0% is the minimal power output in kW
of the system
I want to heat my system with
maximum power
1 100 =
100%
x 7 100% is the maximal power output in
kW of the system
I want to heat my system by
setting power and tempera
ture.
0 60 = 60% 5000 = 50 °C 7 The system will reach the requested
temperature and will not exceed the
power request.
I want to heat my system with
a fixed temperature.
2 x 7500 = 75 °C 7
I want to cool my system with
a fixed temperature.
2 x 1500 =15 °C 8
Values of x are not used for that particular example.
4.2.2 Reading out the water pressure
Tab.11 Water pressure
Object in
stance
Data type Description Resolution /
Format
Min- Max Display
code
409 Analog input Water pressure of the primary circuit. 0,1 Bar 0,0 - 3,0 AM019
4.2.3 Reading out the flow and return temperature
Tab.12 Flow and return temperature for single appliance and cascade
Object in
stance
Data type Description Resolution /
Format
Min- Max Display
code
273 Analog input Current system flow temperature from consumer man
ager of the zone
0,01 °C -10,0 -
120,0
274 Analog input Current system return temperature from consumer
manager of the zone
0,01 °C -10,0 -
120,0
7162 Analog input Cascade flow temperature 0,01 °C -327,68 -
327,68
NM164
7163 Analog input Cascade return temperature 0,01 °C -327,68 -
327,68
NM165
4.2.4 Reading out the status
Tab.13 Status of the system
Object in
stance
Data type Description Resolution /
Format
Min- Max Display
code
411 Analog input Current main status of the appliance. 1 Units 0 - 255 AM012
412 Analog input Current sub status of the appliance. 1 Units 0 - 255 AM014
en 4 Configuration
10 7763253 - v.02 - 10032023
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