Bosch ZSB 30-2 A Operating instructions

6 720 613 085-00.1O
Hydronic Gas Condensing Boiler
Condens 5000 W
ZSB 30-2 A ...| ZWB 37-2 A ...
6 720 644 143 (2010/09) NZ/AU
Installation and servicing instructions for contractors
2 | Contents
Contents
1
Key to symbols and safety instructions . . . . . . . 5
1.1
Explanation of symbols . . . . . . . . . . . . . . 5
1.2
Safety instructions . . . . . . . . . . . . . . . . . . 5
2
Standard delivery . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
Product details . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1
Intended use . . . . . . . . . . . . . . . . . . . . . . 7
3.2
Explanation of model code . . . . . . . . . . . 7
3.3
Gas type . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4
Type plate . . . . . . . . . . . . . . . . . . . . . . . . 7
3.5
Description of appliance . . . . . . . . . . . . . 8
3.6
Accessories . . . . . . . . . . . . . . . . . . . . . . . 8
3.7
Dimensions and minimum clearances . . . 9
3.8
Appliance layout . . . . . . . . . . . . . . . . . . 10
3.9
Electrical wiring diagram . . . . . . . . . . . . 12
3.10
Specification ZSB 30-2 ... . . . . . . . . . . . 16
3.11
Specification ZWB 37-2 ... . . . . . . . . . . . 17
3.12
Condensate composition . . . . . . . . . . . . 18
8
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.1
Before commissioning . . . . . . . . . . . . . 36
8.2
Switching the appliance on/off . . . . . . 36
8.3
Starting the central heating . . . . . . . . . 37
8.4
Setting the heating control unit . . . . . . 37
8.5
After commissioning . . . . . . . . . . . . . . . 37
8.6
Appliances with hot water cylinder:
setting the hot water temperature . . . . 38
8.7
ZWB appliances - setting hot water
temperature . . . . . . . . . . . . . . . . . . . . . 39
8.8
Summer mode (central heating off,
DHW only) . . . . . . . . . . . . . . . . . . . . . . . 39
8.9
Frost protection . . . . . . . . . . . . . . . . . . 39
8.10
Holiday mode . . . . . . . . . . . . . . . . . . . . 40
8.11
Fault mode . . . . . . . . . . . . . . . . . . . . . . 40
9
Thermal disinfection on appliances
with hot water cylinder . . . . . . . . . . . . . . . . . 41
10 Pump anti-seizing function . . . . . . . . . . . . . . . . 42
4
Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1
Water system and pipe work . . . . . . . . .
5.2
Condensate pipe work . . . . . . . . . . . . .
5.2.1
Internal connections . . . . . . . . . . . . . . .
20
20
22
22
6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1
Important notes . . . . . . . . . . . . . . . . . . .
6.2
Checking the size of the expansion
vessel . . . . . . . . . . . . . . . . . . . . . . . . . .
6.3
Siting the appliance . . . . . . . . . . . . . . . .
6.4
Pre-installing pipes . . . . . . . . . . . . . . . .
6.5
Fitting the appliance . . . . . . . . . . . . . . .
6.6
Checking the connections . . . . . . . . . . .
24
24
7
Electrical connections . . . . . . . . . . . . . . . . . . . .
7.1
General information . . . . . . . . . . . . . . . .
7.2
Connecting accessories . . . . . . . . . . . . .
7.2.1
Connecting the heating controller or
remote control units . . . . . . . . . . . . . . .
7.2.2
Connecting the DHW cylinder . . . . . . . .
7.2.3
Connecting temperature limiter TB 1
from the flow of an underfloor
heating system . . . . . . . . . . . . . . . . . . .
6 720 644 143 (2010/09)
25
25
26
28
32
33
33
33
34
34
34
11 Heatronic settings . . . . . . . . . . . . . . . . . . . . . . .
11.1
General information . . . . . . . . . . . . . . .
11.2
Overview of service functions . . . . . . .
11.2.1 Service level 1 . . . . . . . . . . . . . . . . . . .
11.2.2 Service level 2 . . . . . . . . . . . . . . . . . . .
11.3
Description of service functions . . . . .
11.3.1 Service level 1 . . . . . . . . . . . . . . . . . . .
11.3.2 Service level 2 . . . . . . . . . . . . . . . . . . .
43
43
44
44
44
45
45
49
12 Converting the appliance to different
gas types . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
12.1
Gas-type conversion . . . . . . . . . . . . . . . 50
12.2
Setting the gas-air ratio (CO2 or O2) . . 50
12.3
Checking the gas supply pressure . . . . 52
13 Flue gas testing . . . . . . . . . . . . . . . . . . . . . .
13.1
Central heating boost button . . . . .
13.2
Checking flue system for leaks . . . .
13.3
Measuring CO content of flue gas .
...
...
...
...
53
53
53
53
14 Environmental protection . . . . . . . . . . . . . . . . . 54
Contents | 3
15 Inspection/Servicing . . . . . . . . . . . . . . . . . . . . . 55
15.1
Checklist for inspection/servicing
(Inspection/Servicing report) . . . . . . . . 56
15.2
Description of various servicing
operations . . . . . . . . . . . . . . . . . . . . . . . 57
15.2.1 Retrieving last fault stored
(service function 6.A) . . . . . . . . . . . . . . 57
15.2.2 Checking electrodes . . . . . . . . . . . . . . . 57
15.2.3 Strainer in cold water pipe (ZWB) . . . . 57
15.2.4 Plate type heat exchanger (ZWB) . . . . . 58
15.2.5 Heat exchanger . . . . . . . . . . . . . . . . . . 59
15.2.6 Burner . . . . . . . . . . . . . . . . . . . . . . . . . 61
15.2.7 Diaphragm in mixer unit . . . . . . . . . . . . 62
15.2.8 Cleaning condensate trap . . . . . . . . . . 62
15.2.9 Checking the expansion vessel
(see also page 25) . . . . . . . . . . . . . . . . . 62
15.2.10 Setting the heating system pressure . . 63
15.2.11 Checking electrical wiring . . . . . . . . . . 63
16 Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
17 Fault mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
17.1
Troubleshooting . . . . . . . . . . . . . . . . . . 66
17.2
Faults that are shown on the
display . . . . . . . . . . . . . . . . . . . . . . . . . . 67
17.3
Faults that are not shown
on the display . . . . . . . . . . . . . . . . . . . . 70
17.4
Sensor values . . . . . . . . . . . . . . . . . . . . 71
17.4.1 Outside temperature sensor
(for weather-compensated controllers,
accessory) . . . . . . . . . . . . . . . . . . . . . . . 71
17.4.2 Flow and DHW sensors . . . . . . . . . . . . 71
17.5
Code Plug . . . . . . . . . . . . . . . . . . . . . . . 71
17.6
Settings for heating output with
ZSB 30 ...23 . . . . . . . . . . . . . . . . . . . . . . 72
17.7
Settings for heating output with
ZSB 30 ...31 . . . . . . . . . . . . . . . . . . . . . . 72
17.8
Settings for heating output with
ZWB 37 ...23 . . . . . . . . . . . . . . . . . . . . . 73
17.9
Settings for heating output with
ZWB 37 ...31 . . . . . . . . . . . . . . . . . . . . . 73
18 Commissioning report for the appliance . . . . . 74
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
6 720 644 143 (2010/09)
4 | Contents
6 720 644 143 (2010/09)
Key to symbols and safety instructions | 5
1
Key to symbols and safety instructions
1.1
Explanation of symbols
Warning symbols
Safety instructions in this document are
framed and identified by a warning triangle
which is printed on a grey background.
1.2
Safety instructions
If you smell gas
B Turn off gas tap (Æ page 35).
B Open windows and doors.
B Do not operate any electrical switches.
B Extinguish any naked flames.
Electrical hazards are identified by a
lightning symbol surrounded by a warning
triangle.
B Leave the building and telephone your gas supply
utility and authorised contractor from an outside
phone.
Signal words indicate the seriousness of the hazard in
terms of the consequences of not following the safety
instructions.
If you smell flue gas from the appliance
• NOTICE indicates possible damage to property or
equipment, but where there is no risk of injury.
B Inform your heating contractor.
B Switch off the appliance (Æ page 36).
B Open windows and doors.
• CAUTION indicates possible injury.
Explosive and easily flammable materials
• WARNING indicates possible severe injury.
• DANGER indicates possible risk to life.
Never use or store easily flammable materials (paper,
thinners, paints, etc.) near the appliance.
Important information
Combustion air/ambient air
Notes contain important information in
cases where there is no risk of personal
injury or material losses and are identified
by the symbol shown on the left. They are
bordered by horizontal lines above and
below the text.
Additional symbols
Symbol
Meaning
B
a step in an action sequence
Æ
a reference to a related part in the
document or to other related documents
•
a list entry
–
To prevent corrosion, keep the supply of combustion/
ambient air free of corrosive substances (e.g.
halogenated hydrocarbons that contain chlorine or
fluorine compounds).
Thermal disinfection
B Risk of scalding!
It is imperative to monitor operation at water
temperatures over 60 °C (Æ page 41).
a list entry (second level)
Table 1
6 720 644 143 (2010/09)
6 | Standard delivery
2
Standard delivery
Key:
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
9
8
10
6 720 64
4 143- 01
.1O
Fig. 1
6 720 644 143 (2010/09)
Gas condensing boiler
Pre-plumbing jig
Mounting rail
Pre-plumbing jig for ZWB appliances
(for ZSB appliances without cold and DHW water
connections)
Filling loop with key (ZWB)
Adaptors for ZWB appliances
(for appliances ZSB without adaptors for cold cold and
DHW water connections)
Lower cover
Pressure relief valve hose (heating circuit)
Fixing kit
Set of printed documents for the appliance
Product details | 7
3
Product details
ZSB appliances are boilers for heating. They can be
fitted with the diverter valve accessory to connect to an
indirectly heated hot water cylinder.
ZWB appliances are combi boilers for central heating
(CH) and domestic hot water (DHW) heating according
to the instantaneous water heating principle.
3.1
Intended use
The appliance may only be installed in a sealed unvented
central heating system.
3.3
Gas type
The code number indicates the gas family according to
AS 4552:
Code
number
Wobbe index
(WS) (15 °C)
23
12.2 - 55.0 MJ/m3
31
3
Gas type
72.9 - 87.2 MJ/m
NG
LPG
Table 3
This appliance is intended for indoor use only. It is not
to be used as a pool heater.
LPG type1)
Use
Using the appliance for any other purpose will be
considered incorrect use. Bosch accepts no liability for
any damage resulting from such use.
Commercial Propane
recommended
Commercial Butane
permitted
General Product
permitted
Universal LPG (U-LPG)
permitted
The commercial and industrial use of the appliance to
generate process heat is not permitted.
Table 4
1) according to NZS 5435
3.2
Explanation of model code
ZSB 30-2
A
23
S2414
3.4
ZSB 30-2
A
31
S2414
ZWB 37-2
A
23
S2414
The type plate [47] can be found on the inside of the
appliance at the bottom right (Æ Fig. 3, page 10).
ZWB 37-2
A
31
S2414
Table 2
Z
S
W
B
30
37
-2
A
23
31
S2414
Type plate
It contains details of the output of the appliance, the
order number, the approval data and the date of
manufacture in encoded form.
Central heating appliance
Cylinder connection
DHW heating
Condensing boiler technology
Output up to 30 kW
DHW output up to 37 kW
Version
Fan-assisted appliance without draught hood
Natural gas H
Note: Appliances can be converted to LPG.
LPG
Special number for Australia/New Zealand
6 720 644 143 (2010/09)
8 | Product details
3.5
Description of appliance
• Wall mounted boiler; installation independent of
chimney location or room size.
• Intelligent heating circuit pump control when
connected to an weather-dependent heating
controller
3.6
Accessories
Below is a list of typical accessories for this
appliance. You can find comprehensive
details of all available accessories in our
catalogue.
• Heatronic 3 controls with 2-wire BUS
• Flue kits
• ZWB appliances can be supplied with water
preheated by solar energy, Æ page 24
• Weather-compensated controller, e.g. FW 100
• Optimised electronic heating circuit pump with:
• Digital time switch, e.g. DT 10 RF, DT 20 RF
– 2 proportional pressure curves
– 3 constant pressure curves
– 6 stages can be selected
– Run-dry protection and anti-seizing function
• Connecting lead with mains plug
• Display
• Automatic ignition
• Modulating output control
• Fully featured safety system provided by Heatronic
module with flame failure detection and solenoid
valves to EN 298
• No minimum water circulation rate required
• Suitable for underfloor heating
• Connection option for concentric pipe for flue gas/
combustion air Ø 80/125 mm, Ø 60/100 mm
• Variable speed fan
• Premix burner
• Temperature sensor and temperature control for
central heating
• Temperature sensor in flow
• Safety temperature limiter in 24 V electrical circuit
• Pressure relief valve, pressure gauge, expansion
vessel
• Optional for DHW cylinder temperature sensor (NTC)
• Flue gas temperature limiter
• DHW priority
• Plate type heat exchanger (ZWB)
• Motorised three-way valve (ZWB)
• Filling loop (ZWB)
• Pre-plumbing jig
6 720 644 143 (2010/09)
• Room temperature controller, e.g. FR 10, FR 110
• Cylinder temperature sensor SF 2 for third party
cylinders
• Optional Diverter Valve Kit for DHW cylinder
connection including cylinder temperature sensor
(ZSB only).
Product details | 9
3.7
Dimensions and minimum clearances
5
125
min.
min.
A
80
5
760
780
85
B
2
440
200
0
55
3
360
C
1
340
6 720 644 143-02.2J
Fig. 2
1
2
3
A
B
C
Pre-plumbing jig
Casing
Fascia
Additional 30 mm above elbow
Using 100 mm flue kit: 1112 mm /
120 mm flue kit: 1152 mm
20 mm to reversible door /
600 mm front clearance for service
6 720 644 143 (2010/09)
10 | Product details
3.8
Appliance layout
30
29
28
27
31
26
32
25
33
24
34
23
35
22
36
21
37
20
38
39
19
40
18
41
17
42
16
43
15
44
14
45
13
46
47
49
1
2
3
12
4
11
5
6
10
6 720 644 143-03.1O
7
Fig. 3
6 720 644 143 (2010/09)
8
9
48
Product details | 11
Key to figure 3:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
Heatronic 3
Main switch
Burner ON indicator
Service button
Central heating boost button
Here, a weather-compensated control unit or a time switch
(accessories) can be plugged in
CH Flow temperature control
DHW temperature control
Holiday button
eco button
reset button
Display
DHW (ZWB)
CH flow
Adaptor for condensate hose
Condensate syphon
Gas supply pressure test port
Gas valve
DHW temperature sensor
Adjustable gas throttle
Test point for control pressure
Flue gas temperature limiter
Fan
Flow temperature sensor
Expansion vessel
Mixer unit
Bracket
Removable cover
Combustion air inlet
Flue pipe
Sight glass
Set of electrodes
Heat exchanger
Temperature limiter for heat exchanger
Access port for cleaning heat exchanger
Condensate tray
Automatic air vent valve
Plate-type heat exchanger (ZWB)
Turbine (ZWB)
Heating circuit pump
3-way diverter valve
Pressure relief valve (heating circuit)
Pressure gauge
Drain tap
Cold water inlet
Heating return
Type plate
Filling loop (ZWB)
Gas connection
6 720 644 143 (2010/09)
12 | Product details
3.9
Electrical wiring diagram
9
8
10
11
7
12
6
5
15
17
4
k
k
14
16
18
13
3
19
B
B
4
2
1
F
A
2
1
20
21
ST1
Fig. 4
ZSB 30-2
6 720 644 143 (2010/09)
22
Product details | 13
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
21
Spark transformer
CH temperature control
Wiring centre
Safety solenoid
Safety solenoid
Gas valve
Fan
Flame sense eletrode
Spark electrodes
Flow NTC
Heat exchanger overheat stat.
Flue overheat stat.
Earth
Mains supply
Pump
Pump control
Diverter valve (optional)
Pump supply
DHW temperature control
Fluse slow T 0.5 A
Fluse slow T 1.6 A
Code plug
6 720 644 143 (2010/09)
14 | Product details
8
9
10
11
7
12
6
5
16
18
17
15
4
14
13
20
eutr
iv
3
21
B
B
4
2
1
F
A
2
Ls Ns
1
22
23
24
Fig. 5
ZWB 37-2
6 720 644 143 (2010/09)
25
19
Product details | 15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Spark transformer
CH temperature control
230 V room stat/programmer
Safety solenoid
Safety solenoid
Gas valve
Fan
Flame sense eletrode
Spark electrodes
Flow NTC
Heat exchanger overheat stat.
Flue overheat stat.
Earth
Mains supply
DHW sensor
Pump
Pump control
Diverter valve
Flow turbine
Pump supply
DHW temperature control
External frost stat (optional)
Fluse slow T 0.5 A
Fluse slow T 1.6 A
Code plug
6 720 644 143 (2010/09)
16 | Product details
3.10 Specification ZSB 30-2 ...
Unit
kW
kW
kW
MJ/h
kW
kW
kW
MJ/h
kW
MJ/h
ZSB 30-2 ...
Natural gas
Propane
32.1
32.1
31.8
31.8
30.0
30.0
123.4
123.4
8.6
12.4
8.6
12.3
7.7
11.0
31.9
11.5
30.9
45.9
123.4
123.4
Butane
36.6
36.3
34.2
140.5
14.2
14.0
12.6
52.3
35.2
140.5
Max. heat output (Pmax) 40/30 °C
Max. heat output (Pmax) 50/30 °C
Max. heat output (Pmax) 80/60 °C
Max. gas consumption (Qmax), central heating
Min. heat output (Pmin) 40/30 °C
Min. heat output (Pmin) 50/30 °C
Min. heat output (Pmin) 80/60 °C
Min. gas consumption (Qmin), central heating
Max. heat output (PnW), DHW
Max. gas consumption (QnW), DHW
Gas supply rate
Natural gas (gross heating value 37.8 MJ/m3)
m3/h
3.2
Butane/propane (gross heating value 50 MJ/kg)
kg/h
2.4
2.8
Permissible gas supply pressure
NG
kPa
1.1 - 3.0
LPG
kPa
2.75
2.75
Expansion vessel
Pre-charge pressure
kPa
75
75
75
Total capacity
l
10
10
10
Calculation values for calculating cross-section to EN 13384
Flue gas mass flow rate, max./min. rated
g/s
13.6/3.7
12.8/5.2
12.8/5.2
Flue gas temperature 80/60 °C max./min. rated
°C
76/58
76/58
76/58
Flue gas temperature 40/30 °C max./min. rated
°C
55/33
55/33
55/33
Residual pump head
Pa
80
80
80
CO2 at max. rated output
%
9.6
10.8
12.2
CO2 min. rated output
%
9.0
10.2
11.5
Flue gas rating group to G 636/G 635
G61/G62
G61/G62
G61/G62
NOx class
5
5
5
Condensate
Max. condensate quantity (tR = 30 °C)
l/h
2.7
2.7
2.7
pH level, approx.
4.8
4.8
4.8
General data
Power supply voltage
AC ... V
220 - 240
220 - 240
220 - 240
Frequency
Hz
50
50
50
Max. power consumption (central heating mode)
W
150
150
150
EMC limit class
B
B
B
Noise output level
≤ dB(A)
43
43
43
Appliance enclosure rating
IP
X4D
X4D
X4D
Max. flow temperature
°C
Approx. 90
Approx. 90
Approx. 90
Max. permissible operating pressure (PMS) heating
kPa
300
300
300
Permissible ambient temperature
°C
0 - 50
0 - 50
0 - 50
Nominal capacity of appliance heating
l
3.5
3.5
3.5
Weight (excluding packaging)
kg
46.5
46.5
46.5
Dimensions, W x H x D
mm
440 x 760 x 360 440 x 760 x 360 440 x 760 x 360
Table 5
6 720 644 143 (2010/09)
Product details | 17
3.11 Specification ZWB 37-2 ...
Unit
kW
kW
kW
MJ/h
kW
kW
kW
MJ/h
kW
MJ/h
ZWB 37-2 ...
Natural gas
Propane
32.1
32.1
31.8
31.8
30.0
30.0
123.4
123.4
10.6
15.7
10.5
15.5
9.4
13.9
39.1
57.9
37.0
37.0
147.7
147.7
Max. heat output (Pmax) 40/30 °C
Max. heat output (Pmax) 50/30 °C
Max. heat output (Pmax) 80/60 °C
Max. gas consumption (Qmax), central heating
Min. heat output (Pmin) 40/30 °C
Min. heat output (Pmin) 50/30 °C
Min. heat output (Pmin) 80/60 °C
Min. gas consumption (Qmin), central heating
Max. heat output (PnW), DHW
Max. gas consumption (QnW), DHW
Gas supply rate
Natural gas H (gross heating value 37.8 MJ/m3) m3/h
3.9
Butane/propane (gross heating value 50 MJ/kg) kg/h
Permissible gas supply pressure
NG
kPa
1.1 - 3.0
LPG
kPa
Expansion vessel
Pre-charge pressure
kPa
75
Total capacity
l
10
DHW
Max. DHW flow rate
l/min
13.0
Outlet temperature range
°C
40 - 60
Max. cold water inlet temperature
°C
60
Max. permissible water supply pressure
kPa
1000
Min. inlet pressure
kPa
20
Specific flow rate acc. to EN 625 (D)
l/min
16.9
Calculation values for calculating cross-section to EN 13384
Flue gas mass flow rate, max./min. rated
g/s
16.2/4.5
Flue gas temperature 80/60 °C max./min. rated
°C
83/58
Flue gas temperature 40/30 °C max./min. rated
°C
60/35
Residual pump head
Pa
80
CO2 at max. rated output
%
9.7
CO2 min. rated output
%
9.1
Flue gas rating group to G 636/G 635
G61/G62
NOx class
5
Condensate
Max. condensate quantity (tR = 30 °C)
l/h
2.7
pH level, approx.
4.8
Butane
36.6
36.3
34.2
140.5
17.9
17.7
15.9
65.9
42.2
168.5
2.9
3.4
2.75
2.75
75
10
75
10
13.0
40 - 60
60
1000
20
16.9
13.0
40 - 60
60
1000
20
16.9
15.3/6.5
83/58
60/35
80
10.8
10.2
G61/G62
5
15.3/6.5
83/58
60/35
80
12.2
11.5
G61/G62
5
2.7
4.8
2.7
4.8
Table 6
6 720 644 143 (2010/09)
18 | Product details
Unit
General data
Power supply voltage
Frequency
Max. power consumption (central heating
mode)
EMC limit class
Sound pressure level (in heating mode)
Appliance enclosure rating
Max. flow temperature
Max. permissible operating pressure (PMS)
heating
Permissible ambient temperature
Nominal capacity of appliance heating
Weight (excluding packaging)
Dimensions, W x H x D
220 - 240
50
220 - 240
50
220 - 240
50
W
≤ dB(A)
IP
°C
160
B
45
X4D
Approx. 90
160
B
45
X4D
Approx. 90
160
B
45
X4D
Approx. 90
kPa
°C
l
kg
mm
300
0 - 50
3.75
48.5
440 x 760 x 360
300
0 - 50
3.75
48.5
440 x 760 x 360
300
0 - 50
3.75
48.5
440 x 760 x 360
3.12 Condensate composition
Material
Value [mg/l]
Ammonium
1.2
≤
0.01
Cadmium
≤
0.001
Chrome
≤
0.005
Halogenated hydrocarbons
≤
0.002
Hydrocarbons
0.015
Copper
0.028
Nickel
0.1
Mercury
≤
Sulphate
0.0001
1
Zinc
≤
0.015
Tin
≤
0.01
Vanadium
≤
0.001
pH value
Table 7
6 720 644 143 (2010/09)
4.8
Butane
AC ... V
Hz
Table 6
Lead
ZWB 37-2 ...
Natural gas
Propane
Regulations | 19
4
Regulations
Where no specific instruction is given, reference should
be made to the following standards:
• AS 5601 Gas Installations,
• AS 1596 LPG storage and handling,
• AS 4552 Gas fired water heaters for hot water supply
and/or central heating,
• AS/NZS 3000 Electrical Installations,
• AS1697 Installation and maintenance of steel pipe
systems for gas,
• AS 4032 Water supply - valves for the control of hot
water supply temperatures,
• AS 3498 Authorization requirements for plumbing
products - water heaters and hot-water storage tanks.
• AS 1910 Water supply - float control valves for use in
hot and cold water, AS 3500 National plumbing and
drainage code.
6 720 644 143 (2010/09)
20 | Pre-Installation
5
Pre-Installation
5.1
Water system and pipe work
System fill
A
Plastic pipe work:
1
• Any plastic pipe work must have a polymeric barrier
with 600 mm (minimum) length of copper pipe
connected to the boiler.
5
2
SV
• Plastic pipe work used for underfloor heating must be
correctly controlled with a thermostatic blending
valve limiting the temperature of the circuits to
approximately 50 °C.
CV
CV
SV
4
3
Primary systems connections/valves:
B
• All system connections, taps and mixing valves must
be capable of sustaining a pressure up to 3 bar
(300 kPa).
• Bosch recommends that thermostatic radiator valves
(TRV’s) be used on all radiators within the sleeping
accommodation but not the radiator where the room
thermostat is sited. This must be fitted with lockshield valves and left open.
• A drain point is required at the lowest part of the
system.
• An air vent is required at all the high points in the
system.
The boiler is equipped with an automatic
internal by-pass.
Sealed primary system:
NOTE: Artificially softened water must not
be used to fill the CH system.
6
1
CV
D
SV
7
6720644143-41.1J
Fig. 6
A
AA
B
CV
D
SV
1
2
3
4
5
6
7
System fill
Auto air vent
System make up
Check valve
1000 mm (39 in.) above the highest point of the system
Stop valve
Heating return
Hose union
Temporary hose
Test point
Mains supply
Make-up vessel
Fill point
1
• The CH sealed system must be filled using an
approved filling loop or comply with figure 6 for
system fill.
2
6720644743-09.1Wo
• Do not use galvanised pipes or radiators.
3
Fig. 7
1
2
3
6 720 644 143 (2010/09)
Additional expansion vessel
Boiler expanison vessel - CH
Extra expanison vessel - CH return
Pressure relief discharge-
Pre-Installation | 21
S and Y plan systems:
NOTE: The boiler is fitted with its own
internal bypass.
3
2
NOTE:
B A drain point should be fitted at the
lowest part of the heating circuit and
beneath the boiler.
7
6
5
Optional diverter valve
This boiler is designed to operate on a sealed system
only and will require a second return pipe from the water
cylinder to the wall mounting frame.
6720644143-40.1J
Fig. 10
Hot water supplied to sanitary fixtures
In accordance with AS 3498 a temperature control
device such as a tempering valve must be fitted when
hot water is supplied to sanitary fixtures used primarily
for the purposes of personal hygiene.
3
2
System layout with optional internal diverter
valve (not supplied with boiler)
Legend to Fig. 8 to Fig. 10:
1
2
3
4
5
6
7
Diverter valve
Radiater valve (flow)
Lock shield valve (return)
Bypass
Boiler flow
Cylindr return
Heating return
1
M
M
4
6720644143-39.1J
Fig. 8
S plan layout
3
2
1
M
6720644143-38.1J
Fig. 9
Y plan layout with external diverter valve
6 720 644 143 (2010/09)
22 | Pre-Installation
5.2
Condensate pipe work
NOTE:
B Where a new or replacement boiler is
being installed and freezing conditions
are possible, access to an internal drain
“gravity discharge” point should be one
of the factors considered in determining
boiler location.
1
2
3
20mm
6
4
B The condensate pipe must be a minimum
of 40 mm Ø plastic pipe.
40mm Ø
B The condensate pipe work must fall at
least 50 mm per metre towards the outlet
and should take the shortest practicable
route.
B Ensure that there are no blockages in the
pipe run.
Key to condensate illustrations
1
Condensate discharge
2
Air gap (20mm)
3
Tundish
4
Self sealing device
5
Dishwasher connection
6
Vent stack
Fig. 11
Disposal to soil vent stack - vertical position
1
2
3
20mm
6
4
40mm Ø
Table 8
5.2.1
6720646195-18.1Wo
40mm Ø
Internal connections
Where there is the possibility of freezing conditions and
In order to minimise the freezing risk during prolonged
cold spells, the following methods of installing
condensate drainage pipe should be adopted, in order of
priority.
Wherever possible, the condensate drainage pipe should
be routed and terminated so that the condensate drains
away from the boiler under gravity to a suitable internal
soil and vent stack. A suitable permanent connection to
the foul waste pipe should be used.
A self sealing device should be incorporated in the
drainage path, if possible, in an upright position.
A tundish should be used as a suitable air gap just before
the self sealing device. The self sealing device can be
used on a gradient as long as it preceded by a vertically
mounted tundish.
6 720 644 143 (2010/09)
6720646195-19.1Wo
Fig. 12
Disposal to soil vent stack - on gradient
Pre-Installation | 23
Alternatively if the first option is not possible an internal
kitchen or bathroom waste pipe can be used.
1
20mm
2
3
4
40/50mm Ø
40mm Ø
6720646195-16.1Wo
Fig. 13
Disposal to a waste pipe
A washing machine waste pipe or bifurcated pipe etc.
can also be used.
1
20mm
2
3
4
40/50mm Ø
5
6720646195-17.1Wo
Fig. 14
Bifurcated pipe disposal
6 720 644 143 (2010/09)
24 | Installation
6
Installation
DANGER: Risk of explosion!
B Isolate the gas supply before working on
gas-carrying components.
B Check for leaks before working on gascarrying components.
Installation, power connection, connection
on the gas and flue gas side and
commissioning must only be carried out by
a contractor approved for such work by the
local gas or power supply utility.
Anti-freeze
The following anti-freeze fluids are permitted:
Product
Concentration
Varidos FSK
22 - 55 %
Alphi - 11
see manufacturer’s
instructions
Glythermin NF
20 - 62 %
Table 10
Corrosion inhibitor
The following corrosion inhibitors are permissible:
6.1
Important notes
B Prior to installation, obtain the approval of the gas
supply utility.
Supply of water preheated by solar energy (only ZWB)
WARNING: Risk of scalding!
Hot water can lead to severe scalding.
NOTE: Excessive temperatures through
water preheated by solar energy can
damage the equipment.
B Install a solar transfer valve upstream of
the appliance and set to 60 °C.
B To prevent excessive lime scale being
deposited, set the thermostatic mixer to
55 °C when encountering a total
hardness of 15 °dH or higher.
Heating system water
Unsuitable fill and top-up water in the heating system
can result in the heat exchanger scaling up and failing
prematurely.
Hardness range
Water treatment
soft (≤ 8.4 °dH)
not required
medium (8.4 - 14 °dH)
recommended
hard (≥ 14 °dH)
required
Table 9
6 720 644 143 (2010/09)
Designation
Concentration
Fernox
see supplier information
Sentinel
see supplier information
Table 11
Open vented heating systems
B Open vented heating systems must be converted to
sealed systems.
Gravity fed heating systems
B Connect the appliance to the existing pipework via a
low loss header with a dirt separator.
Underfloor heating systems
B The appliance is suitable for underfloor heating
systems; observe permissible flow temperatures.
If a room thermostat is used
B Do not fit a thermostatic radiator valve to the radiator
in the primary room.
To increase efficiency of the sysetm, thermostatic
radiator valves should be used on all other radiators.
Sealants
In our experience, adding sealants to the heating water
may result in problems (deposits in the heat exchanger).
We therefore advise against using them.
Water circulation noises
To prevent water circulation noises:
B Fit an overflow valve, or, with two-pipe heating
systems, a 3-way valve to the radiator furthest from
the boiler.
Installation | 25
Mono-lever taps and thermostatic mixer taps
All types of mono-lever taps and thermostatic mixer taps
can be used.
6.3
Siting the appliance
Regulations concerning the installation site
LPG
B Observe relevant national regulations.
To protect the appliance against excessive pressure:
B Consult the flue kit installation instructions for details
of minimum clearances required for flue gas routing.
B Fit a pressure regulator with a safety valve.
6.2
Checking the size of the expansion
vessel
The integrated expansion vessel is pre-charged to
0.75 bar (75 kPA).
Where the system volume is more than 100 litres or
exceeds 2.65 bar (265 kPa) at maximum heating
temperature, an additional expansion vessel must be
fitted as close as possible to the appliance in the central
heating return.
All expansions vessels must have the same pressure.
B Do not install the appliance outside.
If the appliance is fitted into a cupboard or a
compartment is built around the compliance after
installation, then the compartment must be built from or
lined with a non-combustible material.
Combustion air
In order to prevent corrosion, the combustion air must
not contain any corrosive substances.
Substances classed as corrosion-promoting include
halogenated hydrocarbons which contain chlorine and
fluorine compounds. They may be found in solvents,
paints, adhesives, aerosol propellants and household
cleaners, for example..
Surface temperature
The maximum surface temperature of the appliance is
below 85 °C. Therefore no special safety measures are
required to protect flammable materials and fitted
furniture.
Ventilation
This is a room sealed appliance and does not require any
air for combustion from inside the property.
There is no need for ventilation openings to be provided
in the compartment because of the low heat loss from
the appliance casing, if the clearances shown are
maintained (Æ Section 3.7, Page 9)
6 720 644 143 (2010/09)
26 | Installation
Gas and water connections
Pre-installing pipes
340
B Position mounting plate against the wall, observing
minimum side clearances of 100 mm (Æ page 9).
B Mark out four holes:
75
55
28
B Hook mounting rail into the mounting plate.
Ø 3/4" Ø 1/2"
Ø 3/4"
Ø 1/2"
Ø 3/4"
85
6.4
– One of holes A
– One of holes B
65
65
65
65
– Hole C
364
– Hole D
B Drill Ø 10 mm holes.
158
A
B
R 1/2"
R 3/4"
R 1/2"
R 3/4"
120
R 3/4"
370
6 720 644 143-07.1O
Fig. 16
Pipe connections
Additional adaptors are provided in the fittings kit for
easy connection.
It is very important to ensure that pipes
are not secured in such a way that the
fittings come under strain.
C
D
6 720 615 662-06.1O
Fig. 15
Mounting plate
B Secure mounting plate with mounting rail to the wall
using the screws provided; do not tighten the two
lower screws.
B Hook in pre-plumbing jig and tighten screws.
6 720 644 143 (2010/09)
Installation | 27
Pipework behind the appliance
1
2
3
2
3
The pipes can be routed behind the appliance in the
guide on the mounting plate (Æ Fig. 18).
2
2
3
1
4
4
5
11
10
9
8
7
6
5
6 720 644 143-05.1O
Fig. 17
1
2
3
4
5
6
7
8
9
10
11
Pipe connections
Pre-plumbing jig
Adaptor BSP 3/4" tapered thread with union nut G3/4" and
olive to adapt to local piping connections
Adaptor BSP 1/2" tapered thread with union nut G1/2" and
olive (ZWB) to adapt to local piping connections
Pressure relief valve drain
Heating return
ZWB: Cold water connection
ZSB: Cylinder return
Filling loop (ZWB)
Gas connection
ZWB: DHW connection
ZSB: Cylinder flow
Heating flow
Condensate connector
B The pipe for gas supply must be larger than 18 mm in
diameter.
B For filling and draining the system, fit drain & fill
valves at the lowest point of the system.
6
6 720 644 143-10.1O
Fig. 18
1
2
3
4
5
6
Pipework
Heating flow
ZWB: DHW
ZSB: Cylinder flow
Gas
ZWB: Cold water
ZSB: Cylinder return
Heating return
Filling loop (ZWB)
6 720 644 143 (2010/09)
28 | Installation
6.5
Preparing for fixing
Fitting the appliance
NOTE: Dirt and corrosion in the pipework
can damage the appliance.
B Flush out the system to remove all dirt
residues.
B Place sealing washers on the pre-plumbing jig
connections.
B Pull lever on pressure relief valve connection forwards
and push down as far as it will go (Æ Fig. 12).
B Remove packing, taking care to observe the
instructions on the packing.
B Check the destination country on the type plate and
make sure that the gas type specified on the
identification plate matches that of the gas supplied
by the gas utility company (Æ page 10).
Removing the outer casing
The casing is secured with two screws to
prevent against unauthorised removal for
electrical safety.
B Always secure the outer casing with these
screws.
B Untighten the screws.
B Lift bracket and remove casing towards the front.
2.
6 720 644 143-12.1O
Fig. 20
Securing the appliance
B Hook appliance into the mounting rail at the top and
position it at the bottom on the prepared pipework
connections.
B Tighten the union nuts on the pipe connections.
3.
1.
1.
6 720 644 143-06.1O
Fig. 19
6 720 644 143 (2010/09)
Installation | 29
Drain from pressure relief valve (heating circuit)
Creating the condensate drain
B Push lever on slider up until catch [1] rests on metal
bracket [2] (Æ Fig. 13).
B Push the condensate hose into the adaptor on the
pre-plumbing jig.
B Create the drain.
B Do not use copper pipe.
CAUTION:
B Do not modify or seal off drain pipes.
B Hoses must always slope downwards.
1
2
6 720 644 143-08.1O
Fig. 21
B Route the drain line where it will be easily visible in
the frost-protected area to a drainage point.
WARNING: Risk of scalding
Hot water or steam can lead to scalding
B Stay clear of the pressure relief outlet
during operation of the appliance.
6 720 644 143-15.1O
Fig. 22
NOTE:
B Ensure there are no blockages in the pipe
run.
B Insulate external pipework when freezing
conditions can occur.
6 720 644 143 (2010/09)
30 | Installation
Fitting the filling loop (ZWB)
Filling the heating circuit (ZWB)
B Close the isolating valves on the mains water inlet [9]
and the CH return [1] connections.
B Ensure that all system and boiler drain points are
closed.
B Remove the blanking plugs [2].
B Tigthen screw [1] on the filling loop as far as it will go
(Æ Fig. 24).
B Place the filter [7] into the inlet side of the filling loop
[4] ensuring that the filter mesh faces into the filling
loop.
B Fit the filling loop [4] to the mains water inlet [9] and
CH return [1] connections. Ensure that the filling loop
is completely pushed into the stop tabs [6, 3] on both
sides of the filling loop.
B Fit two screws and washers [8] to each of the two
connections [9] and [1]. Do not try to turn the brass
hexagon connectors.
B Open the cold water supply tap [3] and heating return
tap [2].
B Insert key [4] in the filling direction so the arrow
points to symbol
.
B Turn key [4] to position
.
B Fully undo screw [1] on the filling loop and fill the
heating circuit to a pressure of 1 - 2 bar.
1
1.1
2
3
2
4
1
3
5
9
8
7
4
6
6 720 644 143-26.1O
Fig. 23
6 720 644 143-13.1O
Fig. 24
B After filling, turn in screw [1] as far as it will go.
6 720 644 143 (2010/09)
Installation | 31
B Turn key [4] to position
lower cover.
, remove and insert into the
Connecting the flue pipe
B Push on the flue gas accessories and secure with the
screws supplied.
For more precise details of connecting the
flue, refer to the installation instructions for
the flue routing manual.
2
6 720 644 143-14.1O
1
Fig. 25
Fitting the lower cover
B Push the lower cover into the two guide rails at the
bottom of the appliance.
6 720 615 886-22.1O
Fig. 27
1
2
Fitting the flue kit
Flue/adaptor
Screws
B Check the flue gas path for tightness
(Æ chapter 13.2).
6 720 644 143-18.1O
Fig. 26
6 720 644 143 (2010/09)
32 | Installation
6.6
Checking the connections
Water connections
B Open the heating flow and return valves and fill the
heating system.
B Check sealing points for leaks (testing pressure:
max. 2.5 bar (250 kPA) at the pressure gauge).
B Open the cold water valve on the appliance and a turn
on a hot water tap until water runs out. Max pressure:
10 bar (1000 kPA).
Gas supply pipe
B Close the gas valve to protect the gas valve from
pressure damage.
B Check sealing points for leaks.
B Release the pressure on the gas supply pipe.
6 720 644 143 (2010/09)
Electrical connections | 33
7
Electrical connections
7.1
General information
DANGER: Risk of electric shock!
7.2
Opening the Heatronic unit
B Before carrying out work on electrical
components, disconnect the power
supply (230 V AC) (fuse, circuit breaker)
and secure against unintentional
reconnection.
• Supply: 220 - 240 V, 50 Hz.
Connecting accessories
CAUTION: Cable offcuts can damage the
Heatronic.
B Always strip cables away from the
Heatronic.
B Slide the clip down and pivot the Heatronic.
• The appliance must be earthed.
• All pipes to the appliance must be earthed.
All appliance modulation, control and safety
components are tested and ready-wired for use.
6 720 644 143-34.1O
Observe safety measures according to the relevant
regulations and AS/NZS 3000.
No other electrical consumer units may be connected to
the same power cable.
Fuses
The appliance is protected by three fuses. They are
located on the circuit board (Æ Fig. 4, page 12).
Replacement fuses can be found on the
back of the cover (Æ Fig. 29).
Fig. 28
B Remove screws, unhook cable and remove cover.
1.
1.
2.
1.
6 720 612 659-15.1R
Fig. 29
6 720 644 143 (2010/09)
34 | Electrical connections
B To provide anti-splash protection (IP), always cut
cable grip to fit cable diameter.
8-9
7.2.2
Connecting the DHW cylinder
Replace existing cylinder temperature
sensor with Bosch cylinder temperature
sensor.
Cylinders with Bosch cylinder temperature sensors are
connected directly to the appliance PCB.
5-7
B Snap off the plastic tongue.
10-12
B Insert the cylinder temperature sensor lead.
13-14
6 720 612 259-30.1R
Fig. 30
B Plug the connector into the PCB.
B Feed cable through cable grip and connect as
appropriate.
B Secure cable in cable grommet by means of cable
grip.
7.2.1
Connecting the heating controller or remote
control units
Only operate this appliance with a Bosch controller.
Heating controller FW 100 can also be mounted right at
the front in the Heatronic 3.
For installation and electrical connection, see the
relevant installation instructions.
6 720 612 659-18.3O
Fig. 31
7.2.3
Connecting temperature limiter TB 1 from the
flow of an underfloor heating system
Only for underfloor heating systems connected directly
to the appliance.
B
LZ NZ
B
LS NS
4
2
PR PO NP LP
1
F
9
A
8 7
1 2 C
J
TB1
6 720 612 659-19.2O
Fig. 32
If the temperature limiter trips, central heating and DHW
modes are interrupted.
6 720 644 143 (2010/09)
Commissioning | 35
8
Commissioning
7
8
9
6
5
4
3
reset
10
2
eco
11
1
12
13
20 19
18
14
17
16 15
6 720 644 143-17.1O
Fig. 33
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Flow temperature control
DHW temperature control
Chimney sweep button
Service button
Burner ON indicator
Main switch
Automatic air vent valve
Display
Pressure gauge
reset button
eco button
Holiday button
Drain from pressure relief valve (heating circuit)
Gas tap
CH return isolator
Filling loop (ZWB)
Cold water tap (ZWB),
cylinder return (ZSB)
DHW connection (ZWB),
cylinder flow (ZSB)
CH flow isolator
Condensate hose
6 720 644 143 (2010/09)
36 | Commissioning
8.1
Before commissioning
NOTE: Commissioning without water
destroys the appliance!
B Never run the appliance without water in
it.
8.2
Switching the appliance on/off
Switching on
B Switch appliance on at the main switch.
The display shows the heating water flow
temperature.
B Adjust pre-charge pressure of expansion vessel to
static head of the heating system (Æ page 25).
B Open cold water tap (Æ Fig. 33, [17]) and one DHW
tap until water flows out.
B Open heating flow and return taps [19 and 15] and fill
heating system to 1 to 2 bar (100 - 200 kPa) (via filling
loop [16]) and close filling tap.
B Bleed radiators.
B Top up heating system to pressure of 1 - 2 bar (100 200 kPa).
B Check that the gas type specified on the type plate
matches that of the gas supply.
B Open gas tap [14].
B Do not operate the appliance if the flue terminal fitted
on the outside wall or roof is obstructed or damaged.
B Check that the pressure relief connector, located on
the right hand side at the bottom of the wall frame, is
in its up position.
B Check that the condensate pipe has been connected
to the adaptor.
B Briefly open the pressure relief valve to test its
operation.
3
2
1
4
5
6
max
6 720 613 896-05.1O
B Open all system radiator valves.
Fig. 34
When the appliance is switched on for the
first time, it performs a once-only venting
sequence. This involves the heating circuit
pump switching on and off at intervals (for
approx. 8 minutes).
The display shows
in alternation with the
flow temperature.
B Open automatic air vent valve [7] and close again
after venting (Æ page 35).
If the display shows
in alternation with
the flow temperature, the trap filling
function is active (Æ page 48).
Switching off the appliance
B Switch appliance off at the main switch.
The display goes out.
B If the appliance is to be switched off for a longer
period of time: observe correct frost protection
procedures (Æ chapter 8.9).
6 720 644 143 (2010/09)
Commissioning | 37
8.3
Starting the central heating
8.4
The maximum flow temperature can be matched to the
heating system by the flow temperature controller. The
current flow temperature is shown on the display.
Setting on flow
tem-perature
controller
Flow
temperature
1
Approx. 35 °C
2
Approx. 43 °C
3
Approx. 50 °C
Setting the heating control unit
Follow the operating instructions for the
heating controller used. Those instructions
will tell you
B how to set the operating mode and the
heating curve for weather-dependent
controllers,
Sample
application
B how to adjust the room temperature,
B how to heat economically and save
energy.
Underfloor
heating system
4
Approx. 60 °C
5
Approx. 67 °C
6
Approx. 75 °C
Radiator
heating system
max.
Approx. 90 °C
Convector
heating system
9
12 h
15
18
6
3
24 h
21
6 720 612 660-07.2O
Fig. 36
Table 12
With underfloor heating systems, take care
to observe the maximum permissible CH
flow temperatures.
B Turn flow temperature controller
maximum flow temperature.
to adjust the
reset
eco
3
2
1
3
4
2
5
4
e
6
1
6
max
min
max
8.5
After commissioning
B Check the gas supply pressure (Æ page 52).
B Check the condensate drain to ensure that
condensate runs out. If that is not the case, switch the
main switch off and on again. This activates the
siphon filling program (Æ page 48). Repeat this
procedure several times until condensate starts
running out.
B Record the settings in the commissioning report
(Æ page 74).
B Affix the “Heatronic settings” label to the casing in a
clearly visible position (Æ page 43).
6 720 644 143-27.1O
Fig. 35
When the burner is firing, the green indicator lamp
lights up.
6 720 644 143 (2010/09)
38 | Commissioning
8.6
Appliances with hot water cylinder:
setting the hot water temperature
eco button
Pressing and holding the eco button until it lights up
switches between Comfort mode and Economy mode.
WARNING: Danger of scalding!
Comfort mode, Eco button is not lit (default setting)
B In normal operation, do not set the
temperature higher than 60 °C.
In Comfort mode, the hot water cylinder has priority. The
hot water cylinder is heated to the set temperature first.
Then the appliance switches to central heating mode.
B Set the DHW temperature on the DHW temperature
control
.
The set DHW temperature flashes on the display for
30 seconds.
reset
eco
3
4
2
1
3
2
5
6
max
1
4
e
6
max
6 720 644 143-28.1O
Fig. 37
To prevent bacterial contamination such as
legionella, we recommend setting the DHW
temperature controller
to at least “6”
(60 °C).
This setting ensures economical and
convenient DHW heating.
DHW thermostat
DHW temperature
min
Approx. 5 °C (frost
protection)
e
Approx. 55 °C
6
Approx. 60 °C
max.
Approx. 70 °C
Table 13
6 720 644 143 (2010/09)
Economy mode, Eco button lit
In Economy mode, the appliance switches between
central heating mode and hot water mode every ten
minutes.
Commissioning | 39
8.7
ZWB appliances - setting hot water
temperature
B Set the DHW temperature on the DHW temperature
control
.
The set DHW temperature flashes on the display for
30 seconds.
reset
8.8
Summer mode (central heating off,
DHW only)
B Note position of CH flow temperature control
.
B Turn CH flow temperature control
anti-clockwise
as far as the stop
.
The heating circuit pump and consequently central
heating are switched OFF. However, the DHW supply
as well as the power supply to the heating
programmer and timer remain 'live'.
eco
reset
3
2
1
4
3
2
5
1
6
eco
4
e
6
4
3
3
max
max
5
2
1
6
min
max
6 720 644 143-29.1O
e
2
1
6
Fig. 38
max
6 720 644 143-30.1O
Fig. 39
DHW thermostat
DHW temperature
min
Approx. 40 °C
e
Approx. 50 °C
max.
Approx. 60 °C
Table 14
NOTE: Heating system at risk from frost.
Additional instructions are contained in the operating
instructions for the heating programmer.
eco button
Pressing and holding the eco button until it lights up
switches between Comfort mode and Economy mode.
8.9
Comfort mode, (Eco button is not lit - default setting)
B Leave appliance switched on, set CH flow
temperature control
to position 1 at least.
The appliance is held constantly at the set temperature.
This means that hot water is available almost
instantaneously at the tap.
Consequently the appliance will switch on at intervals,
even if no hot water is being drawn.
Frost protection
Frost protection for the heating system:
reset
eco
5
• With a demand signal
Briefly turning a hot water tap on and then off signals
demand so that the water is then heated up to the set
temperature.
The demand signal enables gas and water
savings.
e
2
6
1
6
max
min
max
Economy mode, Eco button lit
• The water is not heated up until a hot water tap is
turned on.
4
3
3
2
1
6 720 644 143-31.1O
Fig. 40
B Add anti-freeze to the heating water (Æ page 24) and
drain the DHW circuit.
Additional instructions are contained in the operating
instructions for the heating programmer.
Frost protection for the cylinder:
B Turn DHW temperature controller counter clockwise
as far as it will go (5 °C).
eco
Hot water supplied to sanitary fixtures
3
In accordance with AS 3498 a temperature control
device limited to +50 °C, such as a tempering valve must
be fitted when hot water is supplied to sanitary fixtures
used primarily for the purposes of personal hygiene.
2
1
4
3
5
2
6
max
1
min
e
6
max
6 720 644 143-32.1O
Fig. 41
6 720 644 143 (2010/09)
40 | Commissioning
8.10 Holiday mode
8.11 Fault mode
To switch on holiday mode:
All safety, modulation and control components are
monitored by the Heatronic system.
B Press and hold holiday button
on the appliance
until it lights up, and switch on holiday mode on the
heating controller.
In holiday mode, heating and DHW heating are
switched off; frost protection remains active
(Æ chap. 8.9).
If a fault occurs during operation, a warning tone
sounds.
If you press a button, the warning tone
stops.
To switch off holiday mode:
B Press and hold holiday button
on the appliance
until it goes out, and cancel holiday mode on the
heating controller.
The appliance returns to operation in standard mode
according to the settings at the heating control unit.
The display indicates a fault and the reset button may
also flash.
If the reset button flashes:
B Press and hold the reset button until the display
shows
.
The appliance will start up again and the flow
temperature will be displayed.
If the reset button does not flash:
B Switch the appliance off and then on again at the main
switch.
The appliance will start up again and the central
heating flow temperature will be displayed.
If the fault persists:
B Contact your authorised contractor or customer
service for assistance, providing details of the fault
and the appliance (Æ page 7).
For an overview of faults, see page 67.
For an overview of displays, see page 64.
6 720 644 143 (2010/09)
Thermal disinfection on appliances with hot water cylinder | 41
9
Thermal disinfection on appliances with hot water cylinder
To prevent the DHW becoming contaminated by bacteria
such as legionella, we recommend you pasteurise the
system after longer idle periods.
With some heating controllers, thermal
disinfection can be programmed for a fixed
time; see heating controller operating
instructions.
Pasteurisation covers the DHW system including the
draw-off points. For solar DHW cylinders, the solar
portion of the cylinder is not covered.
WARNING: Risk of scalding!
Hot water can lead to severe scalding.
B Only carry out thermal disinfection at
times when the system is not normally in
use.
B The water in the cylinder will take a while
to cool down to the set DHW temperature
as a result of heat loss. Be aware that,
after thermal disinfection, the hot water
may be hotter than the set temperature.
B Turn off all hot water points.
B Warn occupants of risk of scalding.
B If the heating programmer has a DHW program, set
the time and DHW temperature accordingly.
B If there is a circulation pump, set it to run
continuously.
B Turn DHW temperature control clockwise as far as the
stop (approx. 70 °C).
reset
eco
3
2
1
4
3
2
5
6
max
1
4
e
6
max
6 720 644 143-33.1O
Fig. 42
B Wait until the water reaches the maximum
temperature.
B Draw off water in turn from the nearest to the furthest
hot water point until hot water has been running out
at a temperature of 70 °C for 3 minutes.
B Reset DHW temperature control, circulation pump
and heating programmer to their standard settings.
6 720 644 143 (2010/09)
42 | Pump anti-seizing function
10
Pump anti-seizing function
This function prevents the heating circuit
pump and the 3-way valve seizing up during
long periods of inactivity.
Every time the pump is switched off, a timer starts to
briefly switch on the heating circuit pump and the 3-way
valve at regular intervals.
6 720 644 143 (2010/09)
Heatronic settings | 43
11
Heatronic settings
11.1 General information
The Heatronic unit enables easy setting and testing of a
large number of appliance functions.
For an overview of the service functions see
chapter 11.2 on page 44.
Settings on the Heatronic
Service function
Value
3
reset
2
1
eco
3
2
1
3
4
2
5
6
max
1
min
4
5
4
e
6
max
6 720 644 143-11.1O
Fig. 43
1
2
3
4
5
Appliance controls
Chimney sweep button
Service button
Display
eco button or “Up” for service functions
Holiday button or “Down” for service functions
System installer:
6 720 644 145 (2010/09)
Selecting service functions
The service functions are subdivided into two levels
(Æ tables 15 and 16 on page 44).
B Press and hold the service button
until it lights
up.
The display shows a code such as 1.A (service level 1).
B Press eco button and holiday button simultaneously
until a code such as 8.A appears (service level 2).
B Repeatedly press the holiday button or eco button
until the required service function is displayed.
B Press and release the chimney sweep button .
The chimney sweep button
will light up and the
display shows the setting for the selected service
function.
Making a setting
B Repeatedly press the holiday button or eco button
until the required service function value is displayed.
B Enter the value on the “Heatronic settings” label
supplied and affix in a clearly visible position.
By using the "Heatronic settings" label, you
will make it easier for your contractor to set
modified service functions during servicing
at a later date.
Fig. 44
Saving a setting
B Press and hold chimney sweep button
display shows
.
until the
The unit automatically exits the service level
if no button is pressed for 15 minutes.
Exiting the service function without saving settings
B Briefly press the central heating boost button .
The light in the central heating boost button
will go
out.
Restoring standard settings
To restore all values from service levels 1 and 2 to the
standard settings:
B In service level 2, select service function 8.E and save
value 00. The appliance starts with the standard
setting.
6 720 644 143 (2010/09)
44 | Heatronic settings
11.2.2 Service level 2
11.2 Overview of service functions
Access from service level 1; service button lights up.
B Press eco button and holiday button simultaneously
until a code such as 8.A appears.
11.2.1 Service level 1
B Press service button
until it illuminates.
Service function
Service function
Display
code
Page
Display
code
Page
8.A
Software version
49
8.b
Code plug number
49
8.C
GFA status (not applicable)
49
45
8.d
GFA error (not applicable)
49
Map pump step (heat.)
46
8.E
Reset all parameters
49
1.E
Pump switch mode
46
8.F
Permanent ignition
49
2.b
Max. flow temperature
46
9.A
Operation mode permanent
49
2.C
Air purge mode(burner keeps off
while air purge mode is on)
47
9.b
Actual fan speed
49
9.C
Actual heat output
49
2.F
Operating mode
47
9.d
Start fan speed
49
3.b
Anti-cycle time
47
9.E
Turbine signal delay (ZWB only)
49
3.C
Anti-cycle flow temperature
differential
47
9.F
Heating circuit pump run-on time
49
3.E
Pre heat cycle time (hot
water)(ZWB only)
47
3.F
Burner off after DHW demand
(hot water) (ZWB only)
47
4.F
Syphon-fill programme
48
5.A
Reset service reminder
48
5.b
Fan run-on time
48
6.A
Last fault
48
6.d
Actual flow rate turbine
(ZWB only)
48
6.E
Programmer input
48
7.A
Fault indicator LED on/off
48
1.A
Max. output (heating)
45
1.b
Max. output (hotwater - ZWB
only)
45
1.C
Pump map (heating)
1.d
Table 15 Service functions, level 1
6 720 644 143 (2010/09)
Table 16 Service functions, level 2
Heatronic settings | 45
11.3 Description of service functions
11.3.1 Service level 1
Service function 1.A: MAX. OUTPUT (HEATING)
Some gas supply utilities charge a basic rate based on
output.
The heating output can be set to any level between min.
rated heat output and max rated heat output to limit it
to the specific heat requirements.
Even if the output is limited, the full rated
heat output remains available for hot water.
The factory setting is maximum rated heat output:
Appliance type
Display indication
ZSB 30 ...
U0 (100%)
ZWB 37 ...
84
Table 17
Service function 1.b: Max. output (hot water - only
ZWB)
The hot water output can be set to any level between
minimum rated hot water output and maximum rated
hot water output to limit it to the specific hot water
requirements.
The factory setting is maximum rated output – display
shows U0.
B Select service function 1.b.
B Take the DHW output in kW and the associated
parameter from the setting tables (Æ page 72 to 73).
B Enter the setting code.
B Measure the gas flow rate and compare with the
figures for the setting shown. If they do not match,
change the setting.
B Save the setting.
B Enter the selected DHW output on the “Heatronic
settings” label supplied (Æ page 43).
B Exit service functions.
The display will show the CH flow temperature again.
B Select service function 1.A.
B Refer to the settings tables (Æ page 72) for the
output in kW and the corresponding setting code.
B Enter the setting code.
B Measure the gas flow rate and compare with the
figures for the setting shown. If they do not match,
change the setting.
B Save the setting.
B Enter the selected output on the “Heatronic settings”
label supplied (Æ page 43).
B Exit service functions.
The display will show the CH flow temperature again.
Service function 1.C: Pump map (heating)
The appliance is supplied with this function set to 4
(Proportional pressure high). See pump characteristics
below.
The pump map indicates how the pump is controlled in
heating mode. The pump switches between the various
pump speeds so as to reproduce the characteristic curve
selected.
Changing the pump characteristic can be helpful if a
lower pressure difference will guarantee the necessary
circulation on the basis of the system dimensions and
pump characteristic.
In order to save as much energy as
possible and to minimise the possibility of
water circulation noise, a low
characteristic should be chosen.
6 720 644 143 (2010/09)
46 | Heatronic settings
The following can be selected as the pump characteristic
map:
• 00 Pump step adjustable, service function 1.d
(Æ page 46 )
• 01 Constant pressure high
Service function 1.d: Map pump step (heating)
This service function corresponds to the pump speed
switch used on conventional heating pumps.
However, the setting is only active if function 1.C (Pump
map (heating)), is set to 0.
The factory setting is 07.
• 02 Constant pressure medium
• 03 Constant pressure low
• 04 Proportional pressure high
H
• 05 Proportional pressure low
0,6
(bar)
0,5
The factory setting is 04.
0,4
H
0,6
0,3
(bar)
0,5
7
1
0,2
2
0,4
3
4
5
6
2
0,1
0,3
3
0
0
200
400
600
800
1000
1200
0,2
1400
1600
Q (l/h)
6 720 612 126-45.1O
0,1
Fig. 47
Characteristics
0
0
200
400
600
800
1000
1200
1400
1600
Q (l/h)
6 720 612 126-43.1O
Fig. 45
H
Constant pressure
1-7
H
Q
Characteristics
Pressure
Water circulation rate
Service function 1.E: Pump switch mode
• Pump control mode 0:
The BUS controller controls the central heating circuit
pump.
0,6
(bar)
0,5
4
• Pump control mode 1:
The pump is controlled by the central heating flow
temperature control.
5
0,4
0,3
0,2
0,1
0
0
200
400
600
800
1000
1200
1400
1600
Q (l/h)
6 720 612 126-44.1O
Fig. 46
Proportional pressure
Legend for Fig. 45 and 46:
1-5
H
Q
Key to Fig. 47:
Characteristics
Pressure
Water circulation rate
• Pump control mode 2 (factory setting):
For heating systems with room thermostat. The
central heating flow temperature control controls
only the gas, the pump is not affected. The room
thermostat controls both the gas and the pump. The
pump and fan have an over-run time of between 15 s
and 3 min.
• Pump control mode 3:
Not applicable.
Service function 2.b: Maximum flow temperature
The maximum CH flow temperature can be set to
between 35 °C and 88 °C. Even if the CH flow
temperature control is set higher, the setting entered for
2.b (Max. flow temperature) is not exceeded.
The factory setting is 88.
6 720 644 143 (2010/09)
Heatronic settings | 47
Service functions 2.C: Air purge mode
The first time the appliance is switched on, a onceonlyventing function is activated. The heating pump then
switches on and off at intervals. This sequence lasts
about 8 minutes.
The 2-digit display shows
in alternation with the flow
temperature.
The automatic vent will open during venting and then
close once the venting sequence is complete.
The venting function can be activated after
servicing.
Service function 3.C: Anti-cycle flow temperature
differential
The switching difference is the permissible differential
from the specified CH flow temperature. It can be set in
increments of 1 K. The adjustment range is 0 to 30 K. The
minimum CH flow temperature is 35 °C.
Note: 1 K = 1 °C.
B Enter the switching difference setting on the
commissioning record supplied with the appliance.
The factory setting is 10 K.
If the venting function is set to “On” (with automatic
deactivation), the function is set to “Off” once the
sequence has been completed.
Service function 2.F: Operating mode
There are 3 operating modes to choose from.
• Normal mode: the appliance operates according to
the commands received from the programmer. The
Service function 3.E: Cycle time (Hot water) (ZWB
only)
The appliance is supplied with the pre-heat cycle time
set to 20 minutes.
After pre-heating or DHW demand, this function will
stipulate the period of time before the next permissible
pre-heat. This will prevent excessive pre-heat cycling.
• display shows 0.
• Minimum mode: the appliance runs constantly at
minimum output.
The display shows 1. The 2-digit display alternates
between the CH flow temperature and
. After 15
min. the minimal mode changes to normal mode.
• Maximum mode: the appliance runs constantly at
maximum output.
The display shows 2. The 2-digit display alternates
between the CH flow temperature and
. After 15
min. the maximal mode changes to normal mode.
Service function 3.F: Burner off after DHW demand
(Hot water - ZWB only)
The appliance is supplied with the hot water duration
set to 1 minute.
The “hot water duration” time specifies how long, after
hot water has been drawn, that the heating mode
remains disabled.
The factory setting is 0.
Service function 3.b: Anti-cycle time
The anti-cycle time is factory set to 3 minutes.
The shortest possible anti-cycle time is 1 minute
(recommended for single-pipe and hot-air heating
systems).
If the setting 0 is entered, the anti-cycle time is disabled.
B Enter the anti-cycle time on the commissioning record
enclosed with the appliance.
6 720 644 143 (2010/09)
48 | Heatronic settings
Service function 4.F: Siphon-fill programme
The syphon filling function ensures that the syphon trap
is filled when the appliance is first installed or shut down
for a long period. Flue gas is prevented from escaping
into the room where the appliance is installed.
• the appliance is switched on at the main switch
• the burner has not been in use for at least 48 hours
• the appliance is switched from summer to winter
mode
The next time the heating or hot water system calls for
heat, the appliance is held at minimum output for
15 minutes.
The syphon filling programme remains active until the
appliance has completed 15 minutes of operation at
minimum output.
and the CH
DANGER: If the syphon is not filled, flue gas
can escape.
B Only deactivate the syphon filling
programme in order to carry out servicing
work.
B Always re-activate trap filling programme
once servicing is complete.
Service function 5.A: Reset service reminder
The burner service interval of 2324 hours has run out.
After the service inspection store 0 for resetting the
service interval.
Service function 5.b: Fan over-run time
B Set the time of fan over-run after a boiler demand.
Service function 6.A: Last fault
The last fault can also be recalled for servicing purposes
when the appliance is functioning correctly.
6 720 644 143 (2010/09)
The actual flow rate of the turbine is displayed.
Service function 6.E: Programmer input
The trap filling function is activated when:
The 2-digit display alternates between
flow temperature.
Service function 6.d: Current turbine flow rate (ZWB
only)
Shows the status of channel 1 of the timer DT10/20. Left
digit is “Heat demand”, heating mode will be activated
according to the programmer commands. Shows the
status of channel 2 of the timer DT20. Right digit is
“DHW demand”, hot water mode will be activated
according to the programmer commands.
Service function 7.A: Fault indicator LED ON/OFF
The fault indicator LED flashes in case of error even
when its setting is off (0).
Heatronic settings | 49
11.3.2 Service level 2
Service function 8.A: Software version
Service function 9.b: Actual fan speed
The current fan speed is displayed in Hertz (Hz).
The version number of the software is displayed.
Service function 9.C: Actual heating output
Service function 8.b: Code plug
The 4-digit part number of the code plug
(digits no. 7 upto 10 of order no.) is
indicated.
The code plug determines the appliance
functions. If the appliance is converted from
natural gas to LPG or vice versa (using
conversion kit) the code plug also has to be
changed.
Service function 8.C: GFA status
This service function displays the current appliance
heating output (in percent (%)).
Service function 9.d: Start fan speed
The actual start fan speed between 45 and 55 Hz is
displayed in Hertz (Hz).
Service function 9.E: Turbine signal delay (ZWB only)
Sets a delay time relating to the beginning of DHW
demand to avoid an undesired demand by water surge
hammer.
(not applicable)
Service function 9.F: Pump over-run time (CH mode)
Service function 8.d: GFA error
(not applicable)
Sets the time of pump over-run after the end of a heating
demand.
Service function 8.E: Reset all parameters
This function enables you to reset the appliance to the
standard settings. All service functions that have been
altered are reset to their standard settings.
To reset all settings on Service levels 1 and 2 to the
factory settings:
B Display the value of the service function 8.E (second
service level, value = 0) and store it. The appliance
restarts with factory settings.
Service function 8.F: Permanent ignition
This function allows permanent ignition without gas
supply to be activated for the purposes of checking the
ignition mechanism.
NOTE: Ignition transformer may be
damaged.
B Do not run for more than 2 minutes.
Service function 9.A: Operation mode permanent
Set a fixed operation mode even when boiler has been
switched off.
6 720 644 143 (2010/09)
50 | Converting the appliance to different gas types
12
Converting the appliance to different gas types
The gas-air ratio must always be set on the basis of a
CO2 or O2 reading taken at maximum rated heat output
and minimum rated heat output using an electronic
tester.
Adjustment to different flue systems using throttle discs
or baffle plates is not necessary.
12.1 Gas-type conversion
The following gas type conversion sets are available:
Appliance
Conversion to
Order No.
Z... 30-2 A
LPG
8 737 702 124 0
NG
8 737 702 125 0
LPG
8 737 702 122 0
NG
8 737 702 123 0
NG
• Appliances for natural gas are factory-set to Wobbe
index 50 MJ/m3 and 11.3 mbar (1.13 kPa) supply
pressure and sealed.
Z... 37-2 A
Table 19
LPG
• Appliances for LPG are factory-set to to Wobbe index
76.9 MJ/m3 and 27.5 (2.75 kPa) supply pressure and
sealed.
12.2 Setting the gas-air ratio (CO2 or O2)
B Switch appliance off at the main switch.
B Remove the outer casing (Æ page 28).
LPG type1)
Use
B Switch appliance on at the main switch.
Commercial Propane
recommended
B Remove sealing plug from flue gas testing point.
Commercial Butane
permitted
B Insert a flue gas probe approx. 135 mm into the
testing point socket and seal the testing point.
General Product
permitted
Universal LPG (U-LPG)
permitted
Table 18
1) according to NZS 5435
WARNING: Flue gas poisoning
When undefined gas mixtures (General
Product and Universal LPG) are used,
adjustment of gas values can lead to
dangerous levels of carbon monoxide
production.
B For any adjustment of the gas type use
only Commercial Propane and
Commercial Butane.
Commercial Propane can be used at any outside
temperature.
Commercial Butane can only be used when the outside
temperature is more than +5 °C.
We do not recommend the use of General Product and
U-LPG. The mixture of propane and butane in General
Product and U-LPG can vary depending on the amount of
fuel in the tank and the production process, which
makes precise adjustment of the gas values impossible.
6 720 644 143 (2010/09)
6 720 612 688-32.1O
Fig. 48
B Press and hold the cnetral heating boost button
until it lights up.
The display shows the flow temperature alternating
with
= maximum set heating output.
B Briefly press the central heating boost button .
The display shows the flow temperature in alternation
with
= maximum rated output.
B Measure the CO2 or O2 level.
Converting the appliance to different gas types | 51
B Remove the gas throttle seat with a screw driver as
shown in Fig. 49.
B Remove the sealed brass screw from gas valve
adjusting screw and set CO2 or O2 level for minimum
rated heat output.
2 .
1 .
2
1
6 7 2 0 6 1 2 6 5 9 -3 7 .1 R
6 720 614 090-22.1O
Fig. 49
B Adjust the gas flow throttle to set the CO2 or O2 level
for maximum rated output according to the table.
Fig. 51
B Re-check settings at maximum and minimum rated
output and re-adjust if necessary.
B Repeatedly press the central heating boost button
until the light goes out.
The display will show the CH flow temperature again.
B Record the CO2 or O2 levels in the commissioning log.
B Remove flue gas probe from flue gas testing point and
refit sealing plug.
B Seal the gas valve and gas throttle.
6 7 2 0 6 1 2 6 5 9 -3 8 .1 R
Fig. 50
max. rated heat
output
min. rated
heat output
Gas Type
CO2
O2
CO2
O2
NG (23)
9.6 %
3,6 %
9.0 %
4,7 %
LPG (Propane)
10.8 %
4.6 %
10.2%
5.5 %
LPG (Butane)
12.2 %
2.8 %
11.5 %
3.8 %
Table 20
B Briefly press the central heating boost button .
The display shows the flow temperature in alternation
with
= minimum rated heat output.
B Measure the CO2 or O2 level.
6 720 644 143 (2010/09)
52 | Converting the appliance to different gas types
B Switch off the appliance and turn off the gas tap.
B Repeatedly press the central heating boost button
until the light goes out.
The display will show the CH flow temperature again.
B Undo the plug on the testing point for gas inlet
pressure and connect a pressure gauge.
B Switch off the appliance, turn off the gas cock,
remove the pressure gauge and refit the plug.
12.3 Checking the gas supply pressure
B Refit the outer casing.
6 720 614 090-34.1O
Fig. 52
B Turn on the gas tap and switch on the appliance.
B Press and hold the central heating boost button
until it lights up.
The display shows the flow temperature alternating
with
= maximum set output.
B Briefly press the central heating boost button .
The display shows the flow temperature in alternation
with
= maximum rated output.
B Check required gas supply pressure according to
table.
Gas type
Permissible pressure range at
max. rated output
[mbar/kPa]
NG
11 - 30/1.1-3.0
LPG (Propane)1)
25 - 45/2.5-4.5
LPG (Butane)
25 - 35/2.5-3.5
Table 21
1) Standard figure for LPG with fixed cylinders with
capacities up to 15 000 l
Never commission the appliance above or
below these values. Identify and eliminate
the cause. Where that is impossible, shut off
the gas side of the appliance and notify the
gas supply utility.
6 720 644 143 (2010/09)
Flue gas testing | 53
13
Flue gas testing
13.1 Central heating boost button
The following appliance outputs can be selected by
pressing the central heating boost button
until it
lights up:
B Remove sealing plug from combustion air testing
point (2, Æ Fig. 54).
B Insert a flue gas probe into the testing point socket
and seal the testing point.
B Press the central heating boost button to select
maximum rated output.
=
reset
eco
3
2
1
4
3
5
6
max
2
4
e
2
6
1
min
1
max
6 720 644 143-35.1O
Fig. 53
•
= max. heating output setting
•
= max. rated heat output
Fig. 54
•
= min. rated heat output
1
2
6 720 612 688-35.1O
You have 15 minutes in which to take your
measurements. Afterwards, the appliance
returns to standard mode.
Flue gas testing point
Combustion air testing point
B Measure the CO2 and O2 levels.
B Refit plug.
13.3 Measuring CO content of flue gas
13.2 Checking flue system for leaks
Use a multiport flue gas probe for the measurements.
Measuring O2 or CO2 levels in combustion air.
B Remove sealing plug from flue gas testing point
(1, Æ Fig. 54).
Use an annular-slot flue gas probe for the
measurements.
With a type C13, C33 or C93 flue system, the
gas tightness of the flue system can be
tested by measuring the O2 or CO2 content
of the combustion air. The O2 level must not
be below 20,6 %. The CO2 level must not
exceed 0,2 %.
B Insert a flue gas probe as far as it will go into the
testing point socket and seal the testing point.
B Press the central heating boost button to select
maximum rated output.
=
B Measure the CO levels.
B Repeatedly press the central heating boost button
until the light goes out.
The display will show the CH flow temperature again.
B Refit sealing plug.
6 720 644 143 (2010/09)
54 | Environmental protection
14
Environmental protection
Environmental protection is a fundamental corporate
strategy of the Bosch Group.
The quality of our products, their economy and
environmental safety are all of equal importance to us
and all environmental protection legislation and
regulations are strictly observed.
We use the best possible technology and materials for
protecting the environment taking account of economic
considerations.
Packaging
Where packaging is concerned, we participate in
country-specific recycling processes that ensure
optimum recycling.
All packaging materials are environmentally compatible
and can be recycled.
Used appliances
Old appliances contain materials that should be
recycled.
The relevant assemblies are easy to separate, and all
plastics are identified. This allows the various
assemblies to be appropriately sorted for recycling or
disposal.
6 720 644 143 (2010/09)
Inspection/Servicing | 55
15
Inspection/Servicing
To ensure that gas consumption and environmental
impact remain as low as possible over an extended
period of time, we recommend that you take out an
inspection/servicing contract with an authorised
contractor covering an annual inspection, and servicing
at other times as required.
Important notes
For an overview of faults, see page 67.
• The following test equipment is required:
DANGER: Risk of explosion!
– Electronic flue gas emission meter for CO2, CO and
exhaust temperature
B Turn off gas valve before working on gascarrying components.
– Pressure gauge for 0 - 30 mbar (0 - 3 kPa)
(resolution at least 0.1 mbar (0.01 kPa)
B Check for leaks before working on gascarrying components.
DANGER: Risk of poisoning!
B Check for leaks before working on gascarrying components.
DANGER: Risk of electric shock!
B Before carrying out work on electrical
components, disconnect the power
supply (230 V AC) (fuse, circuit breaker)
and secure against unintentional
reconnection.
• Special tools are not required
• Permissible lucricants:
– For components in contact with water: Unisilkon L
641 (8 709 918 413)
– Unions: HFt 1 v 5 (8 709 918 010).
B Use 8 719 918 658 as heat conducting paste.
B Only use genuine spare parts!
B Refer to the spare parts catalogue when ordering
spare parts.
B Always renew seals and O-rings removed during
servicing or repair work.
After inspection/servicing
B Retighten all loosened threaded fittings.
WARNING: Risk of scalding!
B Recommission the appliance (Æ page 35).
Hot water can cause severe scalding
B Check all connections for leaks.
B Drain the appliance before working on
components that carry water.
B Check the gas-air ratio and adjust if necessary
(Æ page 50).
NOTE: Leaking water may damage the
Heatronic module.
B Cover the Heatronic module before
working on any parts that carry water.
6 720 644 143 (2010/09)
56 | Inspection/Servicing
15.1 Checklist for inspection/servicing
(Inspection/Servicing report)
Date
1
Retrieve last fault stored on the
Heatronic module, service function 6.A
(Æ page 57).
2
On Logamax plus GB042-22K
appliances, check filter in cold water
pipe (Æ page 57).
3
Perform a visual check of the air/flue gas
routing.
4
Check the gas supply
pressure, (Æ page 52).
mbar
(kPa)
5
Check the gas-air ratio at
min./max. and adjust if
necessary (Æ page 50).
min. %
max. %
6
Check for leaks on the gas and water
connections (Æ page 32).
7
Check heat exchanger, (Æ page 59).
8
Check burner (Æ page 61).
9
Check electrodes (Æ page 57).
10
Check diaphragm in mixer unit
(Æ page 62).
11
Clean condensate trap (Æ page 62).
12
Check the expansion vessel
pre-charge pressure matches
the static head of the heating
system.
bar
(kPa)
13
Check the heating system
pressure.
bar
(kPa)
14
Check electrical wiring for damage.
15
Check the heating controller settings.
16
Check the selected service functions in
accordance with the “Heatronic
settings” label (Æ Fig. 37, page 38)
Table 22
6 720 644 143 (2010/09)
Inspection/Servicing | 57
15.2 Description of various servicing
operations
15.2.3 Strainer in cold water pipe (ZWB)
B Undo cold water pipe and check filter for dirt.
1.
15.2.1 Retrieving last fault stored (service function
6.A)
B Select service function 6.A (Æ page 43).
For an overview of faults, see page 67.
15.2.2 Checking electrodes
3.
B Remove electrode set (Æ page 10) and gasket.
Check electrodes for dirt; clean or replace if required.
B Refit electrode set and check for tightness (Fig. 56).
2.
1
6 720 612 659-48.1R
Fig. 57
3+1Nm
6720613354-01.2O
Fig. 55
Gas/Gaz?
Fig. 56
6 20 613 3 4 02 2O
6 720 644 143 (2010/09)
58 | Inspection/Servicing
15.2.4 Plate type heat exchanger (ZWB)
B Undo/remove pipe unions.
If the DHW output is insufficient:
B Check strainer in cold water pipe for dirt
(Æ page 57).
B Remove plate-type heat exchanger and replace
-orB Descale only with a product that has been approved
for stainless steel (1.4401).
Remove the plate heat exchanger:
B Disconnect electrical connectors.
B Remove hose from pressure relief valve.
6 720 644 143-21.1O
Fig. 59
B Undo the pressure gauge fastener.
6 720 644 143-20.1O
Fig. 58
6 720 644 143-22.1O
Fig. 60
6 720 644 143 (2010/09)
Inspection/Servicing | 59
B Release the quick-acting closures and remove the
hydraulic assembly completely.
15.2.5 Heat exchanger
For cleaning the heat exchanger, use brush, accessory
no. 1060, and cleaning blade, accessory no. 1061.
B Check control pressure at maximum rated output at
mixer unit.
2.
1.
1.
3.
6 720 644 143-23.1O
Fig. 61
B Undo the plate-type heat exchanger.
6 720 644 143-25.1O
Fig. 63
Appliance
Control pressure
Cleaning
required?
ZSB 30-2 A
≥ 3.9 mbar (0.39 kPa)
No
< 3.9 mbar (0.39 kPa)
Yes
≥ 3.9 mbar (0.39 kPa)
No
< 3.9 mbar (0.39 kPa)
Yes
ZWB 37-2 A
6 720 644 143-24.1O
Fig. 62
Table 23
B Fit new plate-type heat exchanger with new gaskets
and reconnect the hydraulic assembly in reverse
order.
If cleaning is required:
B Check all connections for leaks.
B Remove the heat exchanger access panel (Æ page 10)
and any panel behind, if installed.
6 720 644 143 (2010/09)
60 | Inspection/Servicing
B Remove the condensate siphon and place a suitable
container below the condensate outlet.
1
B Clean the heat exchanger with the brush from top to
bottom.
2
6 720 612 563-14.1O
Fig. 66
B Remove burner (Æ chapter 15.2.6 “Checking the
burner”) and flush the heat exchanger with water
from above.
6 720 644 143-19.1O
2
Fig. 64
B With the cleaning blade, clean the heat exchanger
from the bottom to the top.
6 720 612 664-18.1R
Fig. 67
B Clean the condensate tray (with reversed brush) and
the siphon connection.
6 720 612 563-15.1O
Fig. 65
6 720 610 332-75.2R
Fig. 68
B Close the heat exchanger access panel using a new
gasket and tighten the screws to approx. 5 Nm.
6 720 644 143 (2010/09)
Inspection/Servicing | 61
15.2.6 Burner
B Remove two screws [2] from top cover [1] and lift off
cover (Æ Fig. 69).
1
2
2
7 181 465 330-08.2R
Fig. 71
6 720 615 662-19.1O
B Refit burner, possibly with a new gasket, in reverse
order.
B Adjust the gas-air ratio (Æ page 50).
Fig. 69
B Remove clips [3], nuts [4] and [5] and two screws [7]
(Æ Fig. 69).
3
5
4
6
7
7
6 720 615 662-20.1O
Fig. 70
B Remove burner cover [6].
B Remove burner and clean its components.
6 720 644 143 (2010/09)
62 | Inspection/Servicing
15.2.7 Diaphragm in mixer unit
CAUTION: Ensure that the diaphragm is not
damaged during its release and refitting!
15.2.8 Cleaning condensate trap
B Remove condensate trap and check that the heat
exchanger connection is clear.
B Open the mixing chamber.
B Carefully withdraw diaphragm from fan intake tube
and check for soiling and splits.
1
2
6 720 615 662-21.1O
6 720 644 143-19.1O
Fig. 72
B Carefully refit the diaphragm into the fan connector,
in the correct position.
The diaphragm flaps must open upwards.
B Close the mixing chamber.
Fig. 73
B Remove and clean the condensate siphon sump.
B Check condensate hose and clean if necessary.
B Fill condensation trap with approx. 1/4 l of water and
refit.
15.2.9 Checking the expansion vessel (see also
page 25)
The expansion vessel should be checked annually.
B Depressurise the appliance.
B If necessary, adjust charge pre-charge pressure of
expansion vessel to the static head of the heating
system.
6 720 644 143 (2010/09)
Inspection/Servicing | 63
15.2.10 Setting the heating system pressure
NOTE: Risk of damaging the appliance.
B Only top up the heating system when the
appliance is cold.
Pressure gauge reading
1 bar
(100 kPa)
Minimum system pressure (when
cold)
1 - 2 bar
(100 - 200 kPa)
Optimum system pressure
3 bar
(300 kPa)
Maximum system pressure at
highest heating water
temperature: must not be
exceeded (otherwise pressure
relief valve opens).
Table 24
B If the gauge is below 1 bar (100 kPa) (when the
system is cold), top up the system water between 1
and 2 bar (100 kPa and 200 kPa).
B If there is a pressure drop: check the expansion vessel
and heating system for leaks.
15.2.11 Checking electrical wiring
B Check electrical wiring for physical damage and
replace faulty leads.
6 720 644 143 (2010/09)
64 | Displays
16
Displays
The display shows the following (table 25 and 26):
Value displayed
Description
Number or letter,
dot followed by
letter
Service function
(Ætable 15/ 16,
page 44)
Letter followed
by number or
letter
Fault code flashes
(Æ table 27, page 67)
Two numbers
Decimal figure, e.g.
flow temperature
00..99
U followed by
0..9
Decimal figure;100..109
is displayed as U 0..U9
0..109
One number
(displayed for
longer) followed
twice by two
numbers
(displayed
briefly)
Decimal figure (three
digits);
first digit is shown
alternating with the
two last digits (e.g.
1...69..69 for 169)
0..999
Two dashes
followed by two
pairs of numbers
Boiler coding card
number;
1000
...
Value is shown in three
stages:
1. Two dashes
2. First two numbers
3. Last two numbers
(e.g.: -- ..10..04)
Two letters
followed by two
pairs of numbers
Version number;
Value is shown is three
stages:
1. First two letters
2. First two numbers
3. Last two numbers
(e.g.: CF 10 20)
Table 25 Displays
Range
Special
display
Description
Acknowledge by pressing any key (except
reset).
Acknowledge by pressing two keys
simultaneously
Acknowledge by pressing
and holding
for more than 3 seconds (Save function).
The display alternately shows the flow
temperature and
. The appliance
operates for 15 minutes at the minimum
rated output.
The display shows the flow temperature
alternating with
. The appliance works
with the set maximum rated output in
heating mode, Æservice function 1.A.
9999
The display alternately shows the flow
temperature and
. The appliance
operates for 15 minutes at the maximum
rated output.
Ventilation function is enabled, see
service function 2.C.
The display shows the flow temperature
alternating with
. The trap filling
program is enabled, Æservice function
4.F.
The display shows the flow temperature
alternating with
: the set inspection
interval has elapsed, Æservice function
5.A.
The display alternately shows the flow
temperature and
. The heating circuit
pump is blocked.
The display shows the flow temperature
alternating with
. The temperature
gradient limiter is enabled. Excessive
flow temperature increase: heating mode
is suspended for two minutes.
Table 26 Special displays
6 720 644 143 (2010/09)
Displays | 65
Special
display
Description
Screed drying function of the weathercompensated controller (Æoperating
instructions) or building drying function
(Æservice function 7.E) operational.
Table 26 Special displays
6 720 644 143 (2010/09)
66 | Fault mode
17
Fault mode
17.1 Troubleshooting
DANGER: Risk of explosion!
B Turn off gas valve before working on gascarrying components.
B Check for leaks before working on gascarrying components.
DANGER: Risk of poisoning!
B Check for leaks before working on gascarrying components.
DANGER: Risk of electric shock!
B Before carrying out work on electrical
components, disconnect the power
supply (230 V AC) (fuse, circuit breaker)
and secure against unintentional
reconnection.
WARNING: Risk of scalding!
Hot water can cause severe scalding
B Drain the appliance before working on
components that carry water.
NOTE: Leaking water may damage the
Heatronic module.
B Cover the Heatronic module before
working on any parts that carry water.
6 720 644 143 (2010/09)
All safety, modulation and control components are
monitored by the Heatronic system.
If a fault occurs during operation, a warning tone
sounds.
If you press a button, the warning tone
stops.
The display indicates a fault (e. g.
button may also flash.
) and the reset-
If the reset button flashes:
B Press and hold the reset button until the display
shows
.
The appliance will start up again and the flow
temperature will be displayed.
If the reset button does not flash:
B Switch the appliance off and then on again at the main
switch.
The appliance will start up again and the central
heating flow temperature will be displayed.
For an overview of faults, see page 67.
For an overview of displays, see page 64.
If a fault persists:
B Check PCB, replace if required and set service
functions as per "Heatronic settings" label (Æ Fig. 37,
page 38).
Fault mode | 67
17.2 Faults that are shown on the display
Display
code
A7
A8
Description
Remedy
Temperature sensor for hot water is
faulty.
B Check temperature sensor and lead for breaks or short
circuits, and replace if required.
(ZWB)
B Plug in boiler coding card correctly; replace if required.
Communication fault.
B Check BUS device connecting lead.
B Check controller, replace if required.
Ad
Cylinder temperature sensor not
detected.
B Check cylinder temperature sensor and connecting
lead.
The cylinder temperature sensor was
recognised as a BUS subscriber and then
reconnected to the appropriate terminal.
B Resetting the Heatronic 3 to its standard settings
(Æ service function 8.E, page 49), resetting the IPM 1
or IPM 2 to its standard settings and carrying out the
automatic system configuration on the heating
controller.
Code plug not detected.
B Plug in boiler coding card correctly; replace if required.
Internal data error.
B Restore Heatronic 3 to standard settings (Æservice
function 8.E).
C6
Fan not running.
B Check fan lead and connector, check fan, replace as
necessary.
CC
Outside temperature sensor not detected.
B Check outside temperature sensor and connecting lead
for breaks.
b1
b2/b3/
b4/b5/
b6
B Correctly connect outside temperature sensor to
terminals A and F.
d3
External temperature limiter faulty.
External limiter has tripped.
Temperature limiter locked out.
B Check temperature limiter and lead for breaks or short
circuits, and replace if required.
B Temperature limiter has tripped. Jumper across 8-9 or
PR-P0 is missing.
B Reset the temperature limiter.
d5
E2
External flow temperature sensor
defective (flow equaliser).
B Check temperature sensor and lead for breaks or short
circuits, and replace if required.
The external flow temperature sensor was
recognised as a BUS subscriber and then
reconnected to the appropriate terminal.
B Check whether only one temperature sensor is
connected; otherwise remove second temperature
sensor.
Temperature sensor in CH flow faulty.
B Check temperature sensor and lead for breaks or short
circuits, and replace if required.
B Resetting the Heatronic 3 to its standard settings
(Æ Service function 8.E: Reset all parameters),
resetting the IPM 1 or IPM2 to its standard settings and
carrying out the automatic system configuration on the
heating controller.
Table 27 Faults shown on the display
6 720 644 143 (2010/09)
68 | Fault mode
Display
code
E9
Description
Remedy
Heat exchanger temperature limiter or
flue gas temperature limiter has tripped.
B Check heat exchanger temperature limiter and lead for
breaks or short circuits; replace if required.
B Check flue gas temperature limiter and lead for breaks
or short circuits; replace if required.
B Check the operating pressure of the heating system.
B Check temperature limiter; replace if required.
B Check pump starter; replace pump if required.
B Check PCB fuse; replace if required.
B Vent appliance.
B Check heat exchanger on the water side; replace if
required.
B On appliances with displacement bodies in heat
exchanger, check whether displacement bodies are
fitted.
EA
Flame not detected.
B Check earth lead is correctly connected.
B Check whether gas valve is open.
B Check gas supply pressure; correct if required.
B Check power supply.
B Check electrodes with lead; replace if required.
B Check flue gas system; clean or repair if required.
B Check gas/air ratio; correct if required.
B For natural gas: Check external gas flow limiter; replace
if required.
B For open flue operation, check air supply or ventilation
apertures.
B Clean out condensation trap discharge pipe.
B Remove diaphragm from fan inlet connection and check
for contamination or tears.
B Clean heat exchanger.
B Check gas valve; replace if required.
B Plug in boiler coding card correctly; replace if required.
B Two-phase network (IT): 2 M Ω - insert resistance
between PE and N at PCB power supply.
F0
Internal fault.
B Press reset for 3 seconds and release. When the button
is released, the appliance will restart.
B Check electrical plug-in contacts and ignition leads;
replace PCB if required.
B Check gas/air ratio; correct if required.
F1
Internal data error.
B Restore Heatronic 3 to standard settings (Æservice
function 8.E).
F7
A flame is detected although the
appliance is switched off.
B Check electrodes; replace if required.
B Check flue gas system; clean or repair if required.
B Check PCB for moisture; dry if required.
Table 27 Faults shown on the display
6 720 644 143 (2010/09)
Fault mode | 69
Display
code
FA
Description
Remedy
A flame is detected after the gas has been
switched off.
B Check gas valve; replace if required.
B Clean condensate trap.
B Check electrodes and lead; replace if required.
B Check flue gas system; clean or repair if required.
Fd
Reset was pressed in error.
B Press reset again.
B Check cable harness to high limit safety cut-out and gas
valve for earth connection.
Table 27 Faults shown on the display
6 720 644 143 (2010/09)
70 | Fault mode
17.3 Faults that are not shown on the display
Appliance faults
Remedy
Combustion noise too loud; rumbling noises
B Plug in boiler coding card correctly; replace if required.
B Check gas type.
B Check gas supply pressure; adjust if required.
B Check flue gas system; clean or repair if required.
B Check gas/air ratio in the combustion air and flue gas;
replace gas valve if required.
Flow noises
B Set pump stages or pump characteristic maps correctly and
match to maximum output.
B Set pump mode correctly.
Heat-up takes too long
B Set pump stages or pump characteristic maps correctly and
match to maximum output.
B Set pump mode correctly.
Flue gas readings incorrect; CO levels too high
B Check gas type.
B Check gas supply pressure; adjust if required.
B Check flue gas system; clean or repair if required.
B Check gas/air ratio in flue gas; replace gas valve if required.
Ignition too harsh, poor
B Check gas type.
B Check gas supply pressure; adjust if required.
B Check power supply.
B Check electrodes with lead; replace if required.
B Check flue gas system; clean or repair if required.
B Check gas/air ratio; replace gas valve if required.
B For natural gas: Check external gas flow limiter; replace if
required.
B Check burner; replace if required.
Set flow temperature (e.g. of the FW-100
controller) exceeded
B Switch OFF automatic cycle block, i.e. set value to 0.
Condensate in air box
B Insert diaphragm in the mixing facility as per installation
instructions; replace if required.
DHW temperature is not reached (ZWB)
B Plug in boiler coding card correctly; replace if required.
B Set the required cycle block, e.g. standard setting of 3
minutes.
B Check turbine; replace if required.
Heatronic is flashing (i.e. all keys, all display
segments, burner indicator etc. are flashing)
B Replace fuse Si 3 (24 V).
Set room temperature not reached
B De-areate the hydronic system.
B Check the thermostatic radiator valves
B Check the demand from the controller
B Complete air purge (service function 2.C).
Table 28 Faults not shown on the display
6 720 644 143 (2010/09)
Fault mode | 71
17.4.2 Flow and DHW sensors
17.4 Sensor values
17.4.1 Outside temperature sensor (for weathercompensated controllers, accessory)
Outside temperature / °C
Testing tolerance ± 10%
Resistance ( Ω)
-20
2 392
-16
2 088
-12
1 811
-8
1 562
-4
1 342
0
1 149
4
984
8
842
10
781
15
642
20
528
25
436
Table 29
Temperature/ °C
Measuring tolerance
± 10 %
Resistance (k Ω)
20
14 772
25
11 981
30
9 786
35
8 047
40
6 653
45
5 523
50
4 608
55
3 856
60
3 243
65
2 744
70
2 332
75
1 990
80
1 704
85
1 464
90
1 262
95
1 093
100
950
Table 30
17.5 Code Plug
Appliance
Number
ZSB 30-2 A 23
8 714 431 018 0
ZSB 30-2 A 31
8 714 431 019 0
ZWB 37-2 A 23
8 714 431 014 0
ZWB 37-2 A 31
8 714 431 015 0
Table 31
6 720 644 143 (2010/09)
72 | Fault mode
17.6 Settings for heating output with
ZSB 30 ...23
17.7 Settings for heating output with
ZSB 30 ...31
NG
Propane
Gross calorific value (MJ/m3) (15 °C): 37.8
Display
Heat
output
(kW)
Gas con~
sumption
(MJ/m3)
Heat
output
(kW)
Gas con~
sumption
(MJ/m3)
43
11.0
45.9
12.5
52.2
46
12.0
50.0
13.6
56.8
Net calorific value (MJ/m3) (15 °C): 34.0
Display
Heat
output
(kW)
Gas con~
sumption
(MJ/m3)
Gas flow
rate1)
(l/min)
Butane
32
7.7
31.9
14
49
13.0
54.1
14.8
61.5
33
8.0
33.2
15
52
14.0
58.1
15.9
66.1
36
9.0
37.3
16
55
15.0
62.2
17.0
70.7
39
10.0
41.4
18
58
16.0
66.3
18.2
75.4
42
11.0
45.5
20
61
17.0
70.4
19.3
80.0
45
12.0
49.6
22
64
18.0
74.5
20.5
84.6
48
13.0
53.7
24
67
19.0
78.5
21.6
89.3
51
14.0
57.8
25
70
20.0
82.6
22.7
93.9
54
15.0
61.9
27
73
21.0
86.7
23.9
98.5
57
16.0
66.0
29
76
22.0
90.8
25.0
103.2
60
17.0
70.1
31
79
23.0
94.8
26.1
107.8
63
18.0
74.2
33
82
24.0
98.9
27.3
112.4
66
19.0
78.3
34
85
25.0
103.0
28.4
117.1
69
20.0
82.4
36
88
26.0
107.1
29.5
121.7
73
21.0
86.5
38
91
27.0
111.1
30.7
126.3
76
22.0
90.6
40
94
28.0
115.2
31.8
131.0
79
23.0
94.7
42
97
29.0
119.3
33.0
135.6
82
24.0
98.8
43
30.0
123.4
34.1
140.2
85
25.0
102.9
45
U0
(100)
88
26.0
107.0
47
91
27.0
111.1
49
94
28.0
115.2
51
97
29.0
119.3
52
U0 (100)
30.0
123.4
54
Table 32
1) Gas flow rate (l/min at tV/tR = 80/60 °C
6 720 644 143 (2010/09)
Table 33
Fault mode | 73
17.8 Settings for heating output with
ZWB 37 ...23
17.9 Settings for heating output with
ZWB 37 ...31
NG
Propane
Gross calorific value (MJ/m3) (15 °C): 37.8
Display
Heat
output
(kW)
Gas consumption
(MJ/m3)
Heat
output
(kW)
Gas consumption
(MJ/m3)
45
13.9
57.9
15.8
65.8
45
14.0
58.3
15.9
66.3
Net calorific value (MJ/m3) (15 °C): 34.0
Display
Heat
output
(kW)
Gas consumption
(MJ/m3)
Gas flow
rate1)
(l/min)
Butane
32
9.4
31.9
17
47
15.0
62.4
17.0
70.9
34
10.0
41.6
18
50
16.0
66.4
18.2
75.5
36
11.0
45.7
20
52
17.0
70.5
19.3
80.1
39
12.0
49.8
22
55
18.0
74.6
20.5
84.7
41
13.0
53.9
24
57
19.0
78.6
21.6
89.4
44
14.0
57.9
26
60
20.0
82.7
22.7
94.0
46
15.0
62.0
27
62
21.0
86.8
23.9
98.6
49
16.0
66.1
29
65
22.0
90.8
25.0
103.2
51
17.0
70.2
31
67
23.0
94.9
26.1
107.9
54
18.0
74.3
33
70
24.0
99.0
27.3
112.5
56
19.0
78.4
35
72
25.0
103.0
28.4
117.1
59
20.0
82.5
36
75
26.0
107.1
29.5
121.7
61
21.0
86.6
38
77
27.0
111.2
30.7
126.3
64
22.0
90.7
40
80
28.0
115.2
31.8
131.0
66
23.0
94.7
42
82
29.0
119.3
33.0
135.6
69
24.0
98.8
44
85
30.0
123.4
34.1
140.2
71
25.0
102.9
45
74
26.0
107.0
47
76
27.0
111.1
49
79
28.0
115.2
51
81
29.0
119.3
53
84
30.0
123.4
54
Table 35
Table 34
1) Gas flow rate (l/min at tV/tR = 80/60 °C
6 720 644 143 (2010/09)
74 | Commissioning report for the appliance
18
Commissioning report for the appliance
Customer/system user:
Surname, first name
Street, house number
Telephone/fax
Postcode, town
System installer:
Order number:
Appliance type:
(Complete a separate report for every appliance!)
Serial number:
Date commissioned:
… Individual appliance | … Cascade, number of appliances: ......
Installation
room:
… Cellar | … Attic | Other:
Ventilation apertures: Number: ......, size: approx.
Flue routing:
cm2
… Twin pipe system | … LAS | … Duct | … Separate pipe routing
… Plastic | … Aluminium | … Stainless steel
Total length: approx. ...... m | 90° bend: ...... pce | 15 - 45° bend: ...... pce
Flue tightness test (with combustion air flowing in countercurrent): … yes | … no
CO2 value in the combustion air at maximum rated output:
%
O2 value in the combustion air at maximum rated output:
%
Notes regarding underpressure or overpressure operation:
Gas setting and flue gas test:
Selected gas type: … Natural gas H | … Natural gas L | … Natural gas LL | … Propane | … Butane
Gas supply pressure:
kPa
Gas static supply pressure:
Selected maximum rated output:
kW
Selected minimum rated output:
Gas flow rate at maximum rated output:
Net calorific value HiB:
ltr/min
Gas flow rate at minimum rated output:
mbar
kW
ltr/min
kWh/m3
CO2 at maximum rated output:
%
CO2 at minimum rated output:
%
O2 at maximum rated output:
%
O2 at minimum rated output:
%
CO at maximum rated output:
ppm
CO at minimum rated output:
ppm
Flue gas temperature at maximum rated
output:
Maximum measured flow temperature:
°C
Flue gas temperature at minimum rated
output:
°C
°C
Minimum measured flow temperature:
°C
System hydraulics:
… Low loss header, type:
… Heating circuit pump:
…
Additional expansion vessel
Size/pre-charge pressure:
Automatic air vent valve installed?
… yes | … no
… DHW cylinder/type/number/heating surface output:
… System hydraulics checked, notes:
6 720 644 143 (2010/09)
Commissioning report for the appliance | 75
Modified service functions: (Select the modified service functions and enter the values here.)
Example: service function 7.d changed from 00 to 01
“Heatronic settings” label filled out and affixed …
Heating control unit:
… FW 100 | … FW 200 | … FW 500 | … FR 110
… TA 250 | … TA 270 | … TA 300
… FB 10 × ...... pce, heating circuit code(s):
… FB 100 × ...... pce, heating circuit code(s):
… FR 10 × ...... pce, heating circuit code(s):
… FR 100 × ...... pce, heating circuit code(s):
… ISM 1 | … ISM 2
… ICM × ...... pce | … IEM | … IGM | … IUM
… IPM 1 × ...... pce., heating circuit(s) coding:
… IPM 2 × ...... pce., heating circuit(s) coding:
Miscellaneous:
… Heating control unit set, notes:
… Modified heating control unit settings documented in the controller operating/installation instructions
The following work has been carried out:
… Electrical connections checked, notes:
… Condensate trap filled
… Combustion air/flue gas test carried out
… Function check carried out
… Was a tightness test carried out on the gas and
water sides?
Commissioning includes checking the settings, a visual boiler tightness test and a function check of the boiler and
control unit. The system installer conducts a test of the heating system.
If, in the course of commissioning, any small installation faults in Bosch components are noticed, Bosch is always
willing to remedy these installation faults after release by the customer. This does not imply any liability for the
installation performance.
The system named above has been checked to the
extent described.
The documents have been handed over to the user. The
user has been made aware of the safety information
and operation of the above-mentioned heat source,
including accessories. Attention has been drawn to the
requirement for regular servicing of the abovementioned heating system.
___________________________________________________________
Name of service engineer
__________________________________________________________
Date, user's signature
Affix the test report here.
____________________________________________________________
Date, system installer's signature
6 720 644 143 (2010/09)
76 | Index
Index
A
Anti-freeze ...........................................................
Appliance
Switching off ....................................................
Appliance commissioning report.............................
Appliance details
Specification
- ZSB 30-2 ....................................................
- ZWB 37-2... .................................................
Appliance layout ...................................................
24
36
74
16
17
10
B
Before commissioning
Venting the system ............................................ 36
C
Call up last fault saved .......................................... 48
Calling up the most recently saved fault .................. 48
Central heating
Switching on .................................................... 37
Checking gas supply pipe ...................................... 32
Checking the connections
Gas and water connections ................................ 32
Checking the gas supply pressure........................... 52
Checking the size of the expansion vessel ............... 25
Checklist for inspection/maintenance ..................... 56
Checks by local safety inspector
Flue system leakage check ................................. 53
Measuring CO content of flue gas ....................... 53
Combustion air ..................................................... 25
Comfort mode ................................................ 38–39
Commissioning ..................................................... 35
Condensate trap ................................................... 62
Connect, DHW cylinder ......................................... 34
Connecting the DHW cylinder................................. 34
Converting the appliance to different gas types ....... 50
Corrosion inhibitor ................................................ 24
Electrical wiring
DHW cylinder .................................................... 34
Environmental protection ...................................... 54
Expansion vessel................................................... 62
Checking the size .............................................. 25
Explanation of model code ....................................... 7
F
Fault mode ..................................................... 40,
Faults ..................................................................
Faults that are not shown on the display .................
Faults that are shown on the display .......................
Fitting the appliance .............................................
Flue gas testing ....................................................
Flue system leakage check .....................................
Frost protection....................................................
Fuses
Mains fuse ........................................................
66
67
70
67
28
53
53
39
33
G
Gas and water connections .................................... 32
Gas type .............................................................. 50
Gas-air ratio ......................................................... 50
H
Heating system pressure........................................ 63
Heatronic
Service functions ............................. 43, 45–49, 57
I
Description of appliance .......................................... 8
Description of various inspection/maintenance
operations ........................................................ 57
Checking the expansion vessel ........................... 62
Details of appliance
Appliance layout ............................................... 10
Dimensions ........................................................ 9
Dimensions ............................................................ 9
Display of faults .............................................. 40, 66
disposal ............................................................... 54
Important notes for installation ........................ 24, 55
Important notes on inspection/maintenance ............ 55
Inspection and maintenance operations
Cleaning condensate trap .................................. 62
Inspection and maintenance steps
Plate heat exchanger ......................................... 58
Inspection and servicing operations
Checking electrical wiring .................................. 63
Inspection/Maintenance ........................................ 55
Checking electrodes .......................................... 57
Inspection/Maintenance log ................................... 56
Installation ........................................................... 24
Important notes .......................................... 24, 55
pre-fitting piping ............................................... 26
Siting the appliance........................................... 25
Installation Site
Combustion air ................................................. 25
Surface temperature ......................................... 25
Intended use .......................................................... 7
E
L
D
Eco button ..................................................... 38–39
Economy mode ............................................... 38–39
Electrical connections ........................................... 33
Checking electrical wiring .................................. 63
Connecting accessories ..................................... 33
Heating controller, remote control units .............. 34
Temperature limiter........................................... 34
6 720 644 143 (2010/09)
LPG ..................................................................... 25
Index | 77
M
Maintenance operations
Setting the heating system pressure ................... 63
Measuring CO content of flue gas ........................... 53
Minimum clearances ............................................... 9
Mono-lever taps .................................................... 25
N
Natural gas ...................................................... 17, 50
O
Open vented heating systems ................................ 24
Operating conditions........................................ 16, 18
Outlet siphon ....................................................... 29
P
Packaging ............................................................ 54
Procedure for servicing and maintenance
Retrieving last fault stored ................................. 57
Product details ....................................................... 7
Description of appliance ...................................... 8
Explanation of model code ................................... 7
Standard package ............................................... 6
Pump anti-seizing function ..................................... 42
R
Recycling .............................................................
Regulations ..........................................................
Retrieving last fault stored .....................................
Room thermostat ..................................................
54
19
57
24
Pump switching type for heating mode
(service function 1.E) ...........................................................46
Reset inspection (service function 5.A) ............... 48
Restoring appliance (Heatronic 3) to standard
settings (service function 8.E) .........................................49
Siphon filling program (service function 4.F)........ 48
Software version (service function 8.A) ............... 49
Switching differential (service function 3.C) ........ 47
Time switch input (service function 6.E) .............. 48
Turbine signal delay (only ZWB)
(service function 9.E) ...........................................................49
Venting function (Service function 2.C) ............... 47
Setting the heating control unit .............................. 37
Setting the hot water temperature
Appliances with hot water cylinder ..................... 38
Settings
Heatronic ......................................................... 43
Settings for heating/DHW output
ZSB 30...23................................................. 72–73
ZSB 30...31................................................. 72–73
Siting the appliance .............................................. 25
Specification .................................................. 16–17
Standard package ................................................... 6
Steps for inspection and maintenance
Call up last fault saved....................................... 48
Summer mode ...................................................... 39
Surface temperature ............................................. 25
Switching off the appliance.................................... 36
Switching on the central heating ............................ 37
T
Thermostatic mixer taps ........................................ 25
Troubleshooting.................................................... 66
S
Safety instructions .................................................. 5
Sealants............................................................... 24
Service functions
Coding card number (service function 8.b) .......... 49
Current fan speed (service function 9.b) ............. 49
Current heating output (service function 9.C) ...... 49
Current turbine flow rate
(service function 6.d) ...........................................................48
Cycle block (Service function 3.b) ...................... 47
DHW output (ZSB appliances)
(Service function 1.b) ...........................................................45
exiting without saving ........................................ 43
Fan run-on time (service function 5.b)................. 48
GFA fault (service function 8.d) .......................... 49
GFA status (service function 8.C) ....................... 49
Last fault saved (service function 6.A) ................. 48
Last fault stored (service function 6.A) ................ 57
Maximum flow temperature
(Service function 2.b) ...........................................................46
Most recently saved fault (service function 6.A) ... 48
No function (service function 7.A)....................... 48
Output (service function 1.A) ............................. 45
Permanent ignition (service function 8.F) ............ 49
Permanent operating mode (service function 9.A) 49
Pump characteristic map (service function 1.C) ... 45
Pump curve (service function 1.d) ...................... 46
Pump run-on time (heating)
(service function 9.F) ...........................................................49
U
Underfloor heating ................................................ 24
Used appliance ..................................................... 54
Used appliances ................................................... 54
V
Venting
Venting function ................................................ 47
Venting the system ................................................ 36
W
Water circulation noises ........................................ 24
Water connections
Checking the connections .................................. 32
Water preheated by solar energy ............................ 24
6 720 644 143 (2010/09)
78 |
Notes
6 720 644 143 (2010/09)
| 79
Notes
6 720 644 143 (2010/09)
Australia
Robert Bosch (Australia) Pty Ltd
1555 Centre Rd
Clayton, VIC 3168
Phone 1300 30 70 37
Fax 1300 30 70 38
www.bosch.com.au/hotwater
New Zealand
Phone 0800 4 Bosch or 08 543 352
www.bosch.co.nz