Buderus SU100/5 Fiche technique

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Storage water heater
Acumulador de agua caliente
Préparateur ECS
SU54/5, SU80/5, SU100/5
6 720 805 397-00.1ITL
[en] Installation and maintenance instructions 2
[es] Instrucciones de instalación y de mantenimiento 20
[fr] Notice d'installation et d'entretien 35
6 720 808 532 (2013/08) (US/CA/MX)
WARNING:
These installation instructions are intended solely for
use by a licensed heating contractor or service techni-
cian. Read all instructions before installing. Perform
steps exactly in the order given. Failure to follow these
instructions can result in severe injury, death or proper-
ty damage.
PELIGRO:
Este manual de instalación únicamente lo pueden utili-
zar instaladores de calefacción o técnicos especializa-
dos. Antes de la instalación, lea todas las indicaciones.
Realice todas las acciones exactamente en el orden indi-
cado. En caso de incumplimiento, existe riesgo de lesio-
nes graves e incluso de muerte o daños materiales
considerables.
AVERTISSEMENT :
Cette notice d’installation doit être utilisée uniquement
par des installateurs chauffagistes ou des techniciens de
maintenance qualifiés. Lisez attentivement toutes les
consignes avant l’installation. Exécutez les actions préci-
sément dans l’ordre indiqué. En cas de non-respect,
vous risquez de subir de sérieuses blessures pouvant
conduire à la mort ou d’entraîner de lourds dommages
matériels.
Table of Contents
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08)2
Table of Contents
1 Safety Considerations and Symbol Descriptions . . . . . . . . . . 2
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Safety considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Instructions for the owner and operator . . . . . . . . . . . . . 4
2 Product information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Product information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4 Data plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.5 Pressure drop curve of heating coil . . . . . . . . . . . . . . . . . 5
2.6 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.7 Physical and connection dimensions . . . . . . . . . . . . . . . 7
3 Standards, regulations and directives . . . . . . . . . . . . . . . . . . . 8
4 Moving the tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1 Boiler installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1.1 Requirements for installation location . . . . . . . . . . . . . . 8
5.1.2 Wall clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1.3 Positioning the tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.2 Water connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.2.1 Connecting the tank on the water side . . . . . . . . . . . . . 10
5.2.2 Installing a T&P safety valve (on-site) . . . . . . . . . . . . . . 11
5.3 Install a tank water temperature sensor (accessory)
or aquastat (accessory). . . . . . . . . . . . . . . . . . . . . . . . . 11
6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.1 Commissioning the DHW tank . . . . . . . . . . . . . . . . . . . . 13
7 Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.1 Shutting down the DHW tank . . . . . . . . . . . . . . . . . . . . . 13
7.2 Shutting down the heating system
when there is a risk of frost . . . . . . . . . . . . . . . . . . . . . . 13
8 Environmental Protection / Disposal . . . . . . . . . . . . . . . . . . . 13
9 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
9.1 Preparing the DHW tank for cleaning . . . . . . . . . . . . . . 13
9.2 Descaling/cleaning the DHW tank . . . . . . . . . . . . . . . . . 14
9.3 Checking the magnesium anode . . . . . . . . . . . . . . . . . . 15
9.3.1 Checking the upper magnesium anode
(SU80/5, SU100/5) . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9.3.2 Checking the upper magnesium anode (SU54/5) . . . . 15
9.3.3 Checking the magnesium anode at the side
(SU80/5, SU100/5) . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9.4 Re-commissioning after performing maintenance . . . . 16
10 Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1 Safety Considerations and Symbol
Descriptions
1.1 Key to symbols
Warnings
The following keywords are defined and can be used in this document:
• DANGER indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
• WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
• CAUTION indicates a hazardous situation which, if not avoided, could
result in minor to moderate injury.
• NOTICE is used to address practices not related to personal injury.
Important information
Additional symbols
Warnings in this document are identified by a warning
triangle printed against a grey background.
Keywords at the start of a warning indicate the type and
seriousness of the ensuing risk if measures to prevent
the risk are not taken.
This symbol indicates important information where
there is no risk to people or property.
Symbol Explanation
▶ Step in an action sequence
Cross-reference to another part of the document
• List entry
– List entry (second level)
Table 1
1
Safety Considerations and Symbol Descriptions
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08) 3
1.2 Safety considerations
Read all instructions before installing. Perform the steps in the indicated
sequence. Have the DHW tank inspected by a trained service technician
at least once every year. Failure to comply with these instructions can
result in severe, possibly fatal, personal injury as well as damage to
property and equipment.
Installation and maintenance
▶ Risk of fire from soldering and brazing!
Take appropriate protective measures when soldering and brazing as
the insulation is flammable, for example, cover the insulation.
▶ Ensure that only a licensed contractor installs or services the DHW
tank.
▶ Use installation material with adequate temperature stability.
Forbidden:
Connection of the potentiostat for an impressed current anode to the
magnesium anode installed in a storage tank is absolutely forbidden!
This would destroy the tank! The warranty would be voided.
Installation and commissioning
▶ In the Commonwealth of Massachusetts, the DHW tank must be
installed by a licensed plumber.
▶ The electrical power must be connected by a licensed electrician.
The wiring diagram must be followed.
▶ Do not install this device in rooms with a high moisture level
(e.g. bathrooms, saunas).
Function
▶ To ensure that the tank functions properly, heed these installation and
maintenance instructions.
▶ Never close the blow-off line of the T&P safety valve. For safety
reasons, water may escape during heating.
Danger from electric shock
▶ Ensure that only an authorized contractor performs electrical work.
▶ Before performing electrical work, disconnect the power and secure
the unit against unintentional reconnection.
▶ Ensure the system has been disconnected from the power supply.
Risk of scalding at the hot water draw-off point
▶ When the DHW tank is in operation, temperatures in excess of 122 °F
(50 °C) can occur. To limit the temperature at the tap, install a
thermostatic DHW mixing valve.
▶ Water heated for washing the laundry, dishes and for other cleaning
purposes can cause scalding and permanent injuries.
▶ Children, elderly, and handicapped persons are more likely to be
permanently injured by hot water. Never leave such individuals in the
tub or shower unattended under any circumstances. Children must
not be allowed to operate hot water faucets themselves or to fill a
bathtub.
▶ If the building has occupants in the above groups who operate hot
water faucets, or state laws / local ordinances stipulate specific water
temperatures, take the following precautions:
– Use the lowest possible temperature setting.
– To prevent scalding, install a tempering device, such as an
automatic mixing valve, at hot water tap or water heater. Select and
install the automatic mixing valve in accordance with the valve
manufacturer's recommendations and instructions.
▶ Water exiting from drain valves can be extremely hot. To avoid
injuries:
– Check that all connections are tight.
– Direct exiting water away from people.
▶ Measures must be taken to protect against excessive temperature and
pressure! Installation of a T&P safety valve is required.
The chart below shows the relationship between water temperature and
time until there is a risk of scalding. It can be used as the basis for
determining the safest water temperature for your application.
To protect against corrosion and ensure compliance with the rules for
electrical safety, observe the following points:
▶ Use metal fittings for drinking water heating systems with plastic
piping.
▶ Use only original accessories from the manufacturer.
▶ When installation of the tank is complete, inspect the ground
conductor (including metal fittings).
Maintenance
Customers are advised to:
▶ Sign a maintenance and inspection contract with an authorized
contractor. Inspect and maintain the DHW tank as necessary on a
yearly basis. Service as needed.
▶ Use only original spare parts.
Flooding
▶ After a flood, do not use the appliance if any part has been
submerged. Damage to appliances that have been submerged can be
quite severe and pose numerous safety risks.
▶ An appliance that was subject to flooding must be replaced.
Temperature Time to severe scalding
120 °F (48 °C) longer than 5 minutes
125 °F (51 °C) 1.5 to 2 minutes
130 °F (54 °C) approx. 30 seconds
135 °F (57 °C) approx. 10 seconds
140 °F (60 °C) less than 5 seconds
145 °F (62 °C) less than 3 seconds
150 °F (65 °C) approx. 1.5 seconds
155 °F (68 °C) approx. 1 second
Table 2 Approximate time-temperature relationship until there is a risk
of scalding
1)
1) Source: Moritz, A.R. and Henriques, F.C., Jr. (1947). Studies of thermal injury. II.
The relative importance of time and surface temperature in the causation of
cutaneous burns, Am J of Pathol, 23, 695-720.
2
Product information
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08)4
1.3 Instructions for the owner and operator
▶ Explain the operation and handling of the heating system and DHW
tank, making a particular point of safety-relevant features.
▶ Explain the function and how to check the T&P safety valve.
▶ Hand all enclosed documents over to the owner/operator.
▶ Recommendation for the user: Sign a maintenance and inspection
contract with a licensed contractor.
▶ Highlight the following for the user:
– Water may be discharged from the T&P safety valve during heat-up.
– The blow-off line on the T&P safety valve must always be kept open.
– Check that the T&P safety valve operates properly at least once
yearly.
– The tank must be inspected annually and maintained as required.
2 Product information
2.1 Scope of delivery
•Tanks
• Installation and Service Instructions
•B-KIT
Fig. 1 B-kit
[1] Tee 1" x 1" x ¾ " (2x)
[2] Temperature and pressure relief valve
[3] Blanking cap ¾ "
[4] Drain valve
[5] Bracket for aquastat, screws for aquastat bracket (4x)
[6] Compensating spring for aquastat or tank temperature sensor
[7] Quarter-circle spacer for aquastat or tank temperature sensor
(2x)
2.2 Intended use
The tank is designed for heating and storing drinking water. Please
observe national, regional, and local codes, regulations, guidelines and
standards for potable water.
Install this tank only in sealed unvented hydronic heating systems.
Any other purpose is considered improper use. Any resulting damage is
excluded from the manufacturer's warranty.
WARNING: Risk of scalding at the taps!
There is a risk of scalding at the taps if the tank
temperature is set above 122 °F (50 °C) and during
thermal disinfection.
▶ Advise users that they should draw off only mixed
water. Otherwise, install a thermostatic DHW mixing
valve.
NOTICE: Risk of tank damage from excessively high
pressure.
▶ Never plug the discharge line of the T&P safety valve.
Requirements for drinking water Unit
Water hardness, min. ppm
grain/US gallon
°dH
36
2.1
2
pH value, min. – max. 6.5 – 9.5
Conductivity, min. – max. μS/cm 130 – 1500
Table 3 Requirements for drinking water
6 720 805 397-01.1ITL
1
2
4
3
5
7
6
2
Product information
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08) 5
2.3 Product information
Fig. 2 Product information
2.4 Data plate
The data plate is located at the top rear of the DHW tank.
2.5 Pressure drop curve of heating coil
Fig. 3 Pressure drop curve
[1] SU100/5
[2] SU80/5
[3] SU54/5
Example:
[A] 10 gpm, 2 ft of head
12
14
13
11
7
1
5
3
6
2
4
1
5
3
6
2
4
7
8
14
9
10 10
11
12
SU 54/5 SU80/5, SU100/5
6 720 805 397-02.1ITL
Item Description
1 DHW outlet
2 Recirculation connection
3 Boiler flow
4 Sensor well for temperature sensor
5 Boiler return
6 Cold water inlet
7 Heat exchanger for heating by boiler, smooth enameled tubing
8 Inspection port for service and cleaning at the front
9 2nd anode in inspection port, with insulation
10 SU54/5: 2x built-in magnesium anodes with electrical
insulation
SU80, SU100/5:built-in magnesium anode without electrical
insulation
11 Tank, enameled steel
12 Jacket, painted sheet metal with rigid polyurethane foam
insulation, 2" (50 mm)
13 Inspection port for service and cleaning
14 PS top cover
Table 4 Product information
2
2
0
4
6
8
46810121416
6 720 805 397-08.1ITL
1
2
3
Pressure drop [ft of head]
ow rate [gpm]
A
2
Product information
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08)6
2.6 Technical Data
Unit SU54/5 SU80/5 SU100/5
Tank capacity
Tank capacity (total) gal
(l)
52.8
(200)
79.3
(300)
103
(390)
Maximum flow rate gpm
(l/min)
5.3
(20)
7.9
(30)
10.3
(39)
Maximum DHW temperature °F
(°C)
203
(95)
203
(95)
203
(95)
Maximum operating pressure DHW psi
(bar)
145
(10)
145
(10)
145
(10)
Tank performance at:
Domestic cold water inlet temperature °F
(°C)
50
(10)
50
(10)
50
(10)
Domestic hot water outlet temperature °F
(°C)
140
(60)
140
(60)
140
(60)
DHW temperature rise °F
(°C)
90
(50)
90
(50)
90
(50)
Coil supply water temperature (boiler water) °F
(°C)
176
(80)
176
(80)
176
(80)
Coil flow rate (boiler water) gpm
(l/h)
11.45
(2600)
11.45
(2600)
15.41
(3500)
Coil pressure drop (boiler water) foh
(mbar)
2.68
(80)
3.35
(100)
6.93
(207)
Continuous rating gph
(l/h)
gpm
(l/min)
114
(430)
1.9
(7)
134
(507)
2.2
(8)
209
(791)
3.5
(13)
First hour rating gph
(l/h)
151
(570)
190
(717)
281
(1064)
Maximum heat input to tank btu/hr
(kW)
85304
(25)
100658
(29.5)
156959
(64)
Heat exchanger
Content gal
(l)
1.59
(6)
2.32
(8.8)
3.2
(12.1)
Surface area ft
2
(m
2
)
9.69
(0.9)
13.99
(1.3)
19.38
(1.8)
Standby heat loss (at 149 °F (65 °C) DHW temperature, 68 °F (20 °C) room
temperature)
°F/h
(K/h)
0.55
(0.31)
0.41
(0.23)
0.34
(0.19)
Maximum coil supply water temperature °F
(°C)
230
(110)
230
(110)
230
(110)
Maximum coil operating pressure psi
(bar)
232
(16)
232
(16)
232
(16)
Table 5 Technical Data
2
Product information
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08) 7
2.7 Physical and connection dimensions
Fig. 4 Physical and connection dimensions
6 720 805 397-03.4TT
F
G
H
I
K
J
E
A
L
M
D
E
F
H
I
J
G
A
C
C
B
D
SU 54/5 SU80/5, SU100/5
1"
1"
1"
1"
¾"
¾"
1"
1"
1"
1"
¾"
¾"
Item Description Unit SU54/5 SU80/5 SU100/5
A Diameter inch
(mm)
21-3/4
(550)
26-3/8
(670)
26-3/8
(670)
B Minimum floor weight carrying capacity Ib
(kg)
628
(284)
893
(405)
1122
(509)
C Clearance off floor inch
(mm)
1/2
(12.5)
3/8 - 3/4
(12.5)
3/8 - 3/4
(12.5)
D Overall height inch
(mm)
60-1/4
(1530)
58-7/8
(1495)
72-1/4
(1835)
E Height, cold water inlet inch
(mm)
3-1/4
(80)
3-1/8
(80)
3-1/8
(80)
F Height, tank return inch
(mm)
10-1/2
(265)
12-1/2
(318)
12-1/2
(318)
G Height, sensor well for temperature sensor inch
(mm)
17-1/8
(433)
31-1/5
(617)
24-3/10
(793)
H Boiler flow height inch
(mm)
21-7/8
(553)
28-1/2
(722)
35-3/8
(898)
I Height, recirculation connection inch
(mm)
27-3/4
(703)
35-1/2
(903)
45
(1148)
J Height, DHW outlet inch
(mm)
56.4
(1399)
53-3/8
(1355)
66-3/4
(1695)
K Minimum room height for anode replacement inch
(mm)
74-1/4
(1880)
72-7/8
(1850)
82-3/4
(2100)
L Weight (empty) lb
(kg)
160.9
(73)
231.5
(105)
282.2
(128)
M Weight (full) lb
(kg)
601.9
(273)
892.9
(405)
1142
(518)
Table 6 Physical and connection dimensions
3
Standards, regulations and directives
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08)8
3 Standards, regulations and directives
4 Moving the tank
▶ Position the dolly at the back of the packed DHW tank.
▶ Secure the DHW tank to the means of transportation with a strap.
▶ Transport the DHW tank to the installation location.
▶ Only remove the DHW tank from the packaging at the installation
location.
Fig. 5 Transporting with a dolly
5 Installation
The tank is delivered fully assembled.
▶ Check that the tank is complete and undamaged.
5.1 Boiler installation
5.1.1 Requirements for installation location
▶ Place the DHW tank on a raised platform if there is a risk that water
may collect at the installation site.
▶ The installation site must be a dry and frost-free room.
▶ Observe the minimum height ( Tab. 6, page 7) and minimum wall
clearances inside the installation room ( Fig. 6).
▶ Maintain a distance of 2" (51 mm) from heated pipes and combustible
surfaces.
Observe all national, state, and local code, regulations
and standards applicable to installation and operation of
the tank!
All electrical components must be approved for the USA
and Canada.
WARNING: Risk of injury from carrying heavy loads and
inadequately securing loads for transport!
▶ Use suitable means of transportation, e.g. a dolly with
strap.
▶ Secure the load against falling.
Where possible, do not remove the DHW tank from its
packaging until it has reached the installation location.
This ensures protection during handling.
6 720 800 035-03.1ITL
NOTICE: Risk of damage from inadequate load-bearing
capacity of the supporting substructure or unsuitable
floor surface!
▶ Ensure that the installation area is level and offers
sufficient load-bearing capacity.
NOTICE: Risk of damage from stress cracking and
corrosion!
▶ Position the DHW tank in a dry room free from the risk
of freezing.
▶ Install the tank only in closed-loop, unvented hydronic
heating systems.
▶ Open expansion vessels may NOT be used with this
tank.
NOTICE: If leaks can result in property damage or a drain
pan is required by law:
▶ Install an adequate drain pan.
▶ Follow the installation instructions of the drain pan
manufacturer.
Install an adequate drain pan if required by code, or if a
leak could result in property damage. Follow drain pan
manufacturer's instructions.
5
Installation
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08) 9
5.1.2 Wall clearances
Fig. 6 Recommended minimum wall clearances
5.1.3 Positioning the tank
▶ Unpack the tank by removing the wrap, wooden boards and foam pad
on the top.
▶ Lay the foam pad on the floor to serve as a mat.
Fig. 7 Unpacking the DHW tank
▶ Carefully place the DHW tank on the cover pad [1].
▶ Cut out the raised sections in the EPS bottom pad [2].
▶ Unscrew the screw-in feet [3].
Fig. 8 Laying the DH tank on its side and exposing the adjustable feet
▶ Position the DHW tank on a level floor with adequate load-bearing
capacity.
Fig. 9 Positioning the tank
▶ Maintain minimum wall clearances.
▶ Using the adjustable feet, align the DHW tank vertically.
6 720 801 769-03.1ITL
6 720 800 035-04.1ITL
6 720 801 769-15.1ITL
1.
2.
3.
6 720 801 769-13.1ITL
5
Installation
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08)10
▶ Remove the protective caps from the connections.
Fig. 10 Removing the protective caps
▶ Use Teflon tape or Teflon cord to seal the connections. Do not use
hemp to seal the connections.
5.2 Water connections
5.2.1 Connecting the tank on the water side
System example with all recommended valves and shut-offs
( Fig. 11).
▶ When sizing the heating system expansion vessel, take the volume
of the heating coil in the tank into consideration.
▶ Route the connection cables for the tank temperature sensors at the
back of the tank through the insulation to the heating appliance or
controller.
▶ Install piping runs so that natural circulation is prevented.
If necessary, install check valves.
▶ Install connection cables free of stress.
▶ Attach piping to the tank connections on-site.
▶ Check all connections for leaks.
Fig. 11 Installation (illustrative)
[1] Storage tank
[2] Shut-off valve
[3] P&T safety valve (combined with hot water outlet)
[4] Check valve
[5] Tank primary pump
[6] Recirculation pump (optional)
[7] Air eliminator (in main supply)
[8] Drain valve
[9] Expansion vessel
[AW] DHW outlet
[EK] Cold water inlet
[EL] Tank drain
[EZ] Recirculation inlet
[RS] DHW cylinder return
[VS] DHW cylinder flow
CAUTION: Water damage
▶ Connect the drain to the bottom tank connection prior
to filling the tank.
▶ Seal off all unused tank connections.
DANGER: Risk of fire from soldering and brazing!
▶ Take appropriate safety measures when soldering
and brazing as the thermal insulation is flammable.
For example, cover up the thermal insulation.
▶ Check tank jacket for damage after completing work.
DANGER: Risk of injury from contaminated water!
Work carried out without due care for cleanliness
contaminates the drinking water.
▶ Install in accordance with national standards and
guidelines.
6 720 800 155-22.1ITL
A
B
NOTICE: Risk of corrosion from damage to the enamel
finish!
▶ Attach connections to the DHW tank only "hand-
tight".
5
Installation
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08) 11
5.2.2 Installing a T&P safety valve (on-site)
▶ Install a listed T&P safety valve that is approved for potable water
( ¾ ") in the DHW outlet.
▶ This DHW tank must be installed with a new T&P safety valve.
▶ The T&P valve must be sized no smaller than the rated tank capacity.
▶ Observe the safety valve installation instructions.
▶ T&P discharge pipe:
– The discharge pipe must be at least equal to the outlet cross-
section of the safety valve.
– Route the discharge line from the T&P valve directly to an adequate
drain (maximum length 6 ft (2m) with no more than two 90°-
elbows).
– The discharge line must terminate at an adequate drain in order to
prevent property damage from spillage.
– Check that the T&P safety valve operates properly at least once
annually.
▶ Never plug the blow-off line. During heating, water may be discharged
for operational reasons at any time.
5.3 Install a tank water temperature sensor (accessory)
or aquastat (accessory).
Install a tank temperature sensor or an aquastat on the DHW tank to
measure and monitor the hot water temperature.
Installing the DHW temperature sensor
▶ Take the tank temperature sensor from the scope of delivery of the
control panel (accessories).
▶ Insert the sensor set until it bottoms out inside the sensor well [5].
This automatically pushes back the plastic spiral [3] that holds the
sensor set together.
The compensating spring [4] ensures contact between the sensor well
and sensor surfaces, and a reliable temperature reading.
Fig. 12 Installing the DHW temperature sensor
[1] Quarter-circle spacer
[2] Temperature sensor
[3] Plastic spiral
[4] Compensating spring
[5] Sensor Well
▶ Push sensor retaining clip [1] from the side onto sensor well [2].
▶ Route the sensor lead to the boiler or control panel and ensure the
cable is not strained. This cable must not be in contact with any hot
boiler parts.
▶ In the case a sensor is being used without a compensating spring, the
empty space in the sensor well must be filled with a sufficient amount
of heat-conducting paste.
Fig. 13 Installing the sensor retainer
[1] Sensor retainer
[2] Sensor Well
DANGER: Risk of fatal injury from electric shock.
▶ Isolate the system electrically prior to commencing
work on the system.
Connect the electrical power and set the temperature on
the DHW temperature sensor or the aquastat as shown in
the respective aquastat or control manufacturer's
instructions.
Always ensure that the full length of the sensor surface is
in contact with the sensor well.
6 720 800 155-17.1ITL
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123
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Installation
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08)12
Installing aquastat
▶ Remove cover from the aquastat. To do so, undo the screw on the top.
▶ If necessary, remove any unnecessary attachments. Attach bracket
[3] to aquastat [2] by means of two self-tapping screws [1].
Fig. 14 Attaching the aquastat to the bracket
[1] Self-tapping screws
[2] Aquastat
[3] Bracket
▶ Feed the temperature sensor [4] with the compensating spring [3]
into the sensor well [5].
▶ Attach bracket [6] to DHW tank by means of 4 self-tapping sheet
metal screws [1].
▶ Replace the cover of the aquastat [2].
Fig. 15 Installing aquastat
[1] Self-tapping screws
[2] Aquastat
[3] Compensating spring
[4] Temperature sensor
[5] Sensor Well
[6] Bracket
Installing B-kit components
Fig. 16 Installing B-kit components
[1] Tee 1" x 1" x ¾ " (2x) with P&T safety valve
[2] Cap ¾ " for recirculation connection
[3] Bracket with aquastat
[4] Tee with fill and drain valve
6 720 800 155-04.1ITL
5
4
3
2 1
6
6 720 801 769-04.1ITL
1
2
3
4
6
Commissioning
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08) 13
6 Commissioning
6.1 Commissioning the DHW tank
Have the installer of the heating system or a qualified contractor
commission the equipment.
▶ Commission the boiler and additional accessories in accordance with
manufacturer's instructions or the appropriate installation and
operating instructions.
▶ To bleed air from the DHW tank, open the highest tap/valve.
▶ To fill the tank, open the shut-off valve for the cold water inlet.
▶ Flush the tank and piping thoroughly prior to commissioning.
▶ Before heating up, verify that the boiler, tank and pipework are filled
with water. Open the air bleeder valve for this purpose.
▶ Check all connections, piping and the inspection port for leaks.
7 Shutdown
7.1 Shutting down the DHW tank
▶ Switch off the temperature controller at the control panel, shut of the
heating system emergency shutoff switch, or disengage the heating
system circuit breaker.
▶ Close the cold water inlet shutoff valve.
▶ Drain the DHW tank via the drain valve by opening the highest faucet.
▶ Close the shut-off valves to and from the boiler.
▶ Depressurize the heat exchanger.
▶ Drain and blow out the heat exchanger.
▶ To prevent corrosion, dry out the inner space and keep the inspection
port covers open.
7.2 Shutting down the heating system when there is a risk
of frost
▶ Shut down the heating system and the DHW tank as shown in
chapter 7.1.
8 Environmental Protection / Disposal
Environmental protection is a fundamental principle of the
Bosch Group.
Quality of products, efficiency and environmental protection are equally
important objectives for us. All legislation pertaining to the environment
is strictly observed.
Packaging
For the packaging, we participate in the country-specific recycling
systems, which guarantee optimal recycling. All packaging materials
used are environmentally-friendly and recyclable.
Old 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 components to be sorted for
appropriate recycling or disposal.
9 Maintenance
▶ Allow the DHW tank to cool down sufficiently before performing any
maintenance.
▶ Remedy all faults immediately.
▶ Use original spare parts only!
▶ The tank must be inspected annually and maintained as required.
▶ Check the T&P safety valve annually.
9.1 Preparing the DHW tank for cleaning
The SU80/5 and SU100/5 tanks are cleaned by means of the cleanout
on the side. The SU54/5 tank is cleaned by means of the cleanout at the
top.
▶ Disconnect electrical power from the heating system.
▶ Drain the DHW tank. To do so, close the shut-off valve for cold water
inlet and the open drain valve. To vent the system, open the air vent
valve or the highest faucet.
▶ Remove the PS top cover (SU54/5) ( Fig. 17, page 14, [1]) or
cleanout cover shroud (SU80/5, SU100/5) ( Fig. 18, page 14,
[1]) from the tank.
▶ Loosen the hex bolts [2] in the cleanout cover [3].
NOTICE: Risk of system damage from excessive
pressure!
Excessive pressure can result in tension cracks in the
enamel coating.
▶ Never plug the discharge line of the T&P safety valve.
Use only drinking water to check the DHW tank for leaks.
On the DHW side, the test pressure must not exceed
145 psi (10 bar) gauge pressure.
CAUTION: Risk of tank damage!.Residual moisture can
result in corrosion.
▶ Thoroughly dry out the inside (e. g. by means of hot
air) and leave the cleanout cover open.
WARNING: Risk of scalding from hot water!
▶ Let the tank cool down sufficiently.
Fully drain the tank – even the lowest section of the tank
and the heating coil.
DANGER: RISK OF SCALDING
Hot water can cause scalding.
▶ Prior to cleaning, allow the DHW tank to cool down
sufficiently.
9
Maintenance
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08)14
▶ Remove the cleanout cover [3], magnesium anode [5] and cleanout
cover gasket [4].
Fig. 17 Removing the cleanout cover SU54/5
[1] PS top cover
[2] Hex bolts
[3] Cleanout cover
[4] Cleanout cover gasket
[5] Magnesium anodes
[6] Inspection port
Fig. 18 Removing the cleanout cover SU80/5, SU100/5
[1] Cleanout cover shroud
[2] Hex bolts
[3] Cleanout cover
[4] Magnesium anode
[5] Cleanout cover gasket
[6] Inspection port
9.2 Descaling/cleaning the DHW tank
▶ Check the DHW tank interior for scale deposits (calcium).
Should scale deposits be discovered inside the DHW tank, proceed as
follows:
▶ Hose down the inside of the DHW tank with a “high-pressure” (approx.
58 – 72.5 psi (4 - 5 bar) gauge pressure) cold water jet.
You can increase the cleaning effect by heating up the heat exchanger
in the drained tank before cleaning. The thermal shock effect releases
scale deposits more easily from the coil-type heat exchanger.
▶ Use a wet & dry vacuum cleaner with plastic suction hose to remove
the residues.
Extremely tough scale deposits inside the DHW tank can be removed by
chemical means. We recommend that you have a qualified contractor
carry out the chemical cleaning operation.
Fig. 19 Hose down the inside of the tank as shown in the example
SU80/5, SU100/5
6 720 801 769-07.1ITL
1
2
3
4
5
6
CAUTION: Risk of tank damage due to damaged enamel.
▶ Never use hard objects or tools with sharp edges to
clean the interior of the tank
9
Maintenance
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08) 15
9.3 Checking the magnesium anode
The purpose of the anode rod is to protect the DHW tank against
corrosion. It is critical that the anode rod be inspection once a year to
determine whether it requires replacing.
Upon inspection, the anode rod surface should appear smooth. If the rod
surface appears pitted, bumpy, rusty, scale has built up on the surface,
or if the rod is less than 5/8" (15 mm) in diameter, then it must be
replaced.
Certain installations may require more frequent replacement of the
anode rod:
• Recirculation applications,
• Poor water quality,
• Galvanic/electrolytic corrosion,
• High flow applications.
In the event of poor water quality it is recommended that a water
treatment professional be consulted for water treatment options.
9.3.1 Checking the upper magnesium anode (SU80/5, SU100/5)
▶ Remove PS top cover if not already removed.
▶ Unscrew the magnesium anodes.
▶ Check the magnesium anodes for decomposition.
▶ Replace the magnesium anode if its diameter has been reduced to
approx. 5/8 " (15 mm).
▶ Screw the magnesium anodes back into the cover.
Fig. 20 Checking the upper magnesium anode SU80/5, SU100/5
[1] Hex bolt
[2] Magnesium anode
9.3.2 Checking the upper magnesium anode (SU54/5)
▶ Remove the cleanout cover ( Fig. 17, page 14), if not yet removed.
▶ Check the magnesium anodes.
▶ Replace the magnesium anode if its diameter has been reduced to
approx. 5/8 " (15 mm).
▶ To release the ground cable eyelet [8], undo nut M8 [9].
▶ Undo nut M8 [7].
▶ Remove cleanout cover [3] from magnesium anode [1].
▶ Install new magnesium anode with the aid of the hardware provided
( Fig. 21).
Fig. 21 Replacing the magnesium anode
[1] Magnesium anode
[2] Gasket
[3] Cleanout cover
[4] Insulating sleeve
[5] U-washer
[6] Serrated washer
[7] M8Nut
[8] Ground wire eyelet
[9] M8Nut
9.3.3 Checking the magnesium anode at the side
(SU80/5, SU100/5)
▶ Empty the tank as described in chapter 9.1, page 13.
▶ Remove the cleanout cover ( Fig. 17, page 14), if not yet removed.
▶ Check the magnesium anodes.
▶ Replace the magnesium anode if its diameter has been reduced to
approx. 1/2 " (15 mm).
▶ To release the ground cable eyelet [8], undo nut M8 [9].
▶ Undo nut M8 [7].
▶ Remove cleanout cover [3] from magnesium anode [1].
▶ Install new magnesium anode with the aid of the hardware provided
( Fig. 21).
If the magnesium anode is not serviced properly, the
warranty is void.
Annual service records must be kept in a safe location
and submitted together with the original purchase
receipt in the event of a warranty claim.
Never bring the magnesium anode surface in contact
with oil or grease.
▶ Keep everything clean.
6 720 800 155-23.1ITL
9
Maintenance
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08)16
9.4 Re-commissioning after performing maintenance
▶ Put the cleanout cover [4] back in place (top or side) together with the
new gasket [2].
▶ Thread hex bolts [5] into cleanout cover [4] "hand-tight".
▶ Then use a torque wrench to tighten the hex bolts to 18-22 lbf-ft
(25 - 30 Nm).
▶ Fill the DHW tank and restart the heating system.
▶ Check all connections and the inspection port for leaks.
▶ Replace the cleanout cover shroud.
▶ Reposition the PS top cover on the tank.
Fig. 22 Reassembling the inspection port
[1] Inspection port
[2] Cleanout cover gasket
[3] Magnesium anode
[4] Cleanout cover
[5] Hex bolts
[6] Cleanout cover shroud
CAUTION: Risk of tank damage from a faulty gasket!
▶ To prevent the DHW tank from leaking, install a new
cleanout cover gasket upon completion of cleaning
and maintenance.
10
Spare Parts
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08) 17
10 Spare Parts
Fig. 23 Spare parts for SU54/5
Item Article description Product No.
1 Cover D550 lid, black 8 718 542 319 0
2 Plug, EPS upper part D370 8 718 541 763 0
4 Self-tapping hex screw M10x25 (8x) 7 747 005 744
6 O-ring 120.02x6.99-N 8 718 572 538 0
9 Spacer, 1/4-circle (1x) 8 718 585 547
10 Compensator spring (5x) 8 718 585 143
13 Self-tapping screw St 4.2x13 (10x) 7 747 027 696
14 Retaining plate for the aquastat 7 747 028 761 0
Logo Buderus 8 718 541 573 0
Table 7
6 720 805 397-18.1ITL
1
2
4
6
9
10
13
14
4
10
Spare Parts
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08)18
Fig. 24 Spare parts for SU54/5
Item Article description Product No.
1 Multi-link anode, 3 links 558/528mm M8 63020947
1 Anode D33x400mm (1x) 8 718 571 568 0
2 Anode mounting kit (10x) 5264278
3 Anode grounding cable (insulated) 63037168
4 Self-tapping hex screw M10x25 (8x) 7 747 005 744
5 Cleanout cover DN120 SA5, thermoplastic 8 718 543 791 0
6 O-ring 120.02x6.99-N 8 718 572 538 0
Table 8
6 720 805 397-19.1ITL
2
4
4
3
3
5
6
1
2
1
2
2
4
4
2
1
5
6
3
3
10
Spare Parts
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08) 19
Fig. 25 Spare parts for SU80/5, SU100/5
Item Article description Product No.
1 Cover D670 lid, black 8 718 541 369 0
2 Plug, EPS upper part D672.5 8 718 541 767 0
3 Cleanout gasket D670, black 8 718 542 063 0
5 Self-tapping hex screw M10x25 (8x) 7 747 005 744
6 Cleanout cover DN120 for anode 7 747 004 739
7 O-ring 120.02x6.99-N 8 718 572 538 0
8 Anode D33x400 mm 8 718 571 568 0
9 Anode mounting kit (10x) 5264278
10 Anode G1 1/2x575, without electrical insulation D=33 (80 gal) 8 718 542 779 0
10 Anode G1 1/2x750, without electrical insulation D=33 (100 gal) 8 718 542 778 0
11 Anode grounding cable (insulated) 63037168
13 Self-tapping screw St 4.2x13 (10x) 7 747 027 696
14 Retaining plate for the aquastat 7 747 028 761 0
15 Spacer, 1/4-circle (1x) 8 718 585 547
16 Compensator spring (5x) 8 718 585 143
Logo Buderus 8 718 541 573 0
Table 9
6 720 805 397-20.1ITL
9
11
1
2
10
13
14
9
8
3
5
6
5
7
16
15
15
Índice de contenidos
SU54/5, SU80/5, SU100/5 – 6 720 808 532 (2013/08)20
Índice de contenidos
1 Indicaciones de seguridad y explicación de los símbolos . . 20
1.1 Explicación de los símbolos . . . . . . . . . . . . . . . . . . . . . . 20
1.2 Indicaciones de seguridad . . . . . . . . . . . . . . . . . . . . . . . 21
1.3 Instrucción del usuario . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2 Datos sobre el producto . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.1 Volumen de suministro . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.2 Uso adecuado . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.3 Descripción del producto . . . . . . . . . . . . . . . . . . . . . . . . 23
2.4 Placa de características . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.5 Curva de pérdida de presión intercambiador de calor . 23
2.6 Datos técnicos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.7 Dimensiones constructivas y de conexión . . . . . . . . . . 25
3 Normas, prescripciones y directivas . . . . . . . . . . . . . . . . . . . . 26
4 Transporte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 Montaje . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.1 Instalación . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.1.1 Requisitos del lugar de emplazamiento . . . . . . . . . . . . 26
5.1.2 Distancia a la pared . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.1.3 Colocar el acumulador de agua caliente . . . . . . . . . . . . 27
5.2 Conexión hidráulica . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2.1 Conexión hidráulica del acumulador de agua caliente . 28
5.2.2 Montar la válvula de temperatura y válvula
de seguridad de presión . . . . . . . . . . . . . . . . . . . . . . . . 29
5.3 Montar la sonda de temperatura del acumulador
(accesorio) o el acuastato (accesorio) . . . . . . . . . . . . . 29
6 Puesta en marcha . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.1 Puesta en marcha del acumulador de agua caliente . . . 30
7 Fuera de servicio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.1 Poner el acumulador de agua caliente fuera
de servicio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.2 Desconectar la instalación de calefacción en caso
de riesgo de heladas . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8 Protección del medio ambiente/eliminación de residuos . . 31
9 Mantenimiento . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9.1 Preparar el acumulador de agua caliente
para la limpieza . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9.2 Descalcificación/limpieza del acumulador
de agua caliente . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9.3 Comprobación del ánodo de magnesio . . . . . . . . . . . . . 33
9.3.1 Comprobar el ánodo de magnesio superior
(SU80/5, SU100/5) . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.3.2 Comprobar el ánodo de magnesio superior (SU54/5) 33
9.3.3 Comprobar el ánodo de magnesio lateral
(SU80/5, SU100/5) . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.4 Nueva puesta en funcionamiento después del
mantenimiento . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
1 Indicaciones de seguridad y explicación de
los símbolos
1.1 Explicación de los símbolos
Advertencias
Las siguientes palabras de señalización están definidas y pueden utili-
zarse en el presente documento:
• AVISO advierte sobre la posibilidad de que se produzcan daños mate-
riales.
• ATENCIÓN advierte sobre la posibilidad de que se produzcan daños
personales de leves a moderados.
• ADVERTENCIA advierte sobre la posibilidad de que se produzcan
daños personales de graves a mortales.
• PELIGRO advierte sobre daños personales de graves a mortales.
Información importante
Otros símbolos
Las advertencias están marcadas en el texto con un
triángulo.
Adicionalmente las palabras de señalización indican el
tipo y la gravedad de las consecuencias que conlleva la
inobservancia de las medidas de seguridad indicadas
para evitar riesgos.
La información importante que no conlleve riesgos per-
sonales o materiales se indicará con el símbolo que se
muestra a continuación.
Símbolo Significado
▶Procedimiento
Referencia cruzada a otro punto del documento
• Enumeración/punto de la lista
– Enumeración/punto de la lista (2.º nivel)
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