Viessmann Vitocell 100-B CVB Series User manual

Installation Instructions
VITOCELL
r
100-B
5608 488 v1.2 09/2012
for use by heating contractor
Vitocell 100-B
CVB Series
Enameled dual-coil, indirect-fired domestic hot water storage tank
79 USG and 120 USG (300 L and 450 L) capacity
CAUTION
The heat transfer medium must
be water or other non-toxic fluid
having a toxicity rating or class
of 1, as listed in clinical toxicology
of commercial products, 5th
edition.
This tank version is not suitable
for steam heating applications.
The pressure of the heat transfer
medium must be limited to a
max. of 30 psig by an approved
safety or relief valve.
Read and save these instructions
for future reference.
IMPORTANT
Please file in Service Binder
Product may not be exactly as shown

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5608 488 v1.2
Vitocell 100-B Installation Instructions
Safety, Installation and Warranty Requirements
Introduction
Please ensure that these instructions are read and understood before commencing installation. Failure to comply with
the instructions listed below and details printed in this manual can cause product/property damage, severe personal
injury, and/or loss of life. Ensure all requirements below are understood and fulfilled (including detailed information
found in manual subsections).
CAUTION
The heat transfer medium must be either potable water
or contain only substances which are recognized as safe
by the U.S. Food and Drug Administration.
The Pressure of the heat transfer medium must be
maintained less than the normal minimum operating
pressure of the potable water system.
gLicensed professional heating contractor
The installation, adjustment, service and maintenance
of this equipment must be performed by a licensed
professional heating contractor.
uPlease see section entitled
“Important Regulatory and Installation
Requirements”.
gProduct documentation
Read all applicable documentation before commencing
installation. Store documentation near product in a
readily accessible location for reference in the future
by service personnel.
uFor a listing of applicable literature,
please see section entitled “Important
Regulatory and Installation Requirements”.
gAdvice to owner
Once the installation work is complete, the heating
contractor must familiarize the system operator/
ultimate owner with all equipment, as well as safety
precautions/requirements, shutdown procedure, and
the need for professional service annually before the
heating season begins.
gWarranty
Information contained in this and
related product documentation must
be read and followed. Failure to do
so renders the warranty null and void.
In solar applications

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5608 488 v1.2
Vitocell 100-B Installation Instructions Contents
Safety, Installation and Warranty Requirements..............2
Licensed professional heating contractor.....................2
Product documentation.............................................2
Advice to owner......................................................2
Warranty................................................................2
Important Regulatory and Installation Requirements........4
Codes.....................................................................4
Mechanical room.....................................................4
Working on the equipment........................................4
Technical literature..................................................4
About These Instructions.............................................5
Product Information.....................................................5
79 USG to 120 USG (300 L to 450 L) capacity..........5
Tank Connections.......................................................6
Tank Set-up...............................................................7
79 USG (300 Liter) Tank Installation............................8
Thermal insulation and thermometer Installation..........8
Temperature sensor installation for solar operation......8
Temperature sensor installation (when using
a Vitotronic 200 / 300 or Vitodens 200).....................9
Checking the anode connection...............................10
120 USG (450 Liter) Tank Installation.........................10
Thermal insulation and thermometer installation........10
Temperature sensor installation for solar operation....11
Temperature sensor installation (when using
a Vitotronic 200 / 300 or Vitodens 200)...................11
Fitting the thermal insulation jacket..........................12
Fitting the thermometer and thermometer sensor
(if supplied) and covers...........................................13
Aquastat installation (when using a Vitotronic 100)............14
Grounding connection.............................................14
Boiler Water Connections (heat exchanger connection)...15
Recommended piping with solar application with
individual DHW tank...............................................15
Domestic Water Connections......................................16
Pressure Drop Information..........................................18
Installation of Inspection Front Opening.......................19
Post Installation.......................................................19
Service binder........................................................19
Start-up information...............................................19
Introduction
Safety
General Information
Set-up and Connections
Additional Information
Page

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5608 488 v1.2
Vitocell 100-B Installation Instructions
WARNING
If the heating system itself is to be filled with Glycol or
any other antifreeze, the system fill must be of non-toxic
or food grade antifreeze. In any circumstance, a non-toxic
fluid must be used. Ensure a copy of the Material Safety
Data Sheet (MSDS) is supplied to the operator/ultimate
owner of the system. The use of Viessmann supplied
“Tyfocor-HTL” solar fill is recommended for the heating
circuit.
Codes
The installation of indirect-fired hot water storage tanks
in boilers and solar system application might be governed
by individual local rules and regulations for this type of
product, which must be observed. Always use latest
editions of codes.
In the Commonwealth of Massachusetts, all plumbing
work must be done by a licensed plumber or gas-fitter
and for gas installations, all gas piping must be done by
a licensed gas-fitter.
Mechanical room
Ensure the mechanical room complies with the
requirements of the system design guideline and/or
Technical Data Manual (available from your Viessmann
sales representative).
The tank must be installed in a mechanical room which
is never subject to freezing temperatures.
Ensure water in tank is drained if not in use and danger
of freezing exists in the mechanical room.
Working on the equipment
The installation, adjustment, service, and maintenance
of this equipment must be done by a licensed professional
heating contractor who is qualified and experienced in
the installation, service, and maintenance of hot water
heating systems. There are no user serviceable parts on
this equipment.
Ensure main power supply to equipment, the heating
system, and all external controls has been deactivated.
Close main oil or gas supply valve. Take precautions to
avoid accidental activation of power during service work.
Safety
Important Regulatory and Installation Requirements
u Please carefully read this manual prior to attempting
installation. Any warranty is null and void if these
instructions are not followed.
This product must be installed observing not only the
information and instruction provided in the pertinent
product literature (see list on following page), but also
all local, provincial/state plumbing and building codes,
as they apply to this product and all periphery
equipment.
For information regarding other Viessmann System
Technology componentry, please reference
documentation of the respective product (available
from your Viessmann sales representative).
We offer frequent installation and service seminars to
familiarize our partners with out products. Please inquire.
u The completeness and functionality of field supplied
electrical controls and components must be verified
by the heating contractor. These include low-water
cut-offs, flow switches (if used), staging controls,
pumps, motorized valves, air vents, thermostats,
temperature controls, etc.
Technical literature
Literature applicable to all aspects of the Vitocell:
- Technical Data Manual
- Installation Instructions
- Start-up/Service Instructions
- Operating Instructions and User’s Information Manual
u Leave all literature at the installation site and advise the
system operator/ultimate owner where the literature
can be found. Contact Viessmann for additional copies.

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5608 488 v1.2
Vitocell 100-B Installation Instructions
Product Information
Take note of all symbols and notations intended to draw attention to potential hazards or important product information.
These include “WARNING”, “CAUTION”, and “IMPORTANT”. See below.
u Warnings draw your attention to the presence of
potential hazards or important product information.
u Cautions draw your attention to the presence of
potential hazards or important product information.
u Helpful hints for installation, operation or maintenance
which pertain to the product.
u This symbol indicates that additional, pertinent
information is to be found.
u This symbol indicates that other instructions must be
referenced.
About These Instructions
WARNING
Indicates an imminently hazardous situation which, if
not avoided, could result in substantial product/property
damage, serious injury or loss of life.
CAUTION
Indicates an imminently hazardous situation which, if not
avoided, may result in minor injury or product/property
damage.
IMPORTANT
u
79 USG and 120 USG (300 L and 450 L) capacity
Indirect-fired domestic hot water storage tank with dual
heat exchanger coil for use with hot water heating boilers,
solar heating systems, residential/commercial heating
plants and low-temperature heating systems.
These tank versions are not suitable for steam heating
applications.
General Information

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5608 488 v1.2
Vitocell 100-B Installation Instructions
Tank Connections
Set-up and Connections
Legend
1Thermometer probe connection
MA Magnesium anode
DHW Domestic hot water supply
TS/AQ DHW temperature sensor or aquastat of
boiler control (upper indirect coil)
BWS Boiler water supply *1
RT Recirculation tapping
FP Fitting plug
BWR Boiler water return *1
TS/TH DHW temperature sensor and
thermometer probe (lower indirect coil)
SCS Solar collector supply *2
SCR Solar collector return and temperature sensor
for solar operation *2, 3
DCW Domestic cold water supply
*1 The upper indirect coil is provided for
connection to a boiler or a heat pump.
*2 The lower indirect coil is provided for
connection to solar collectors or heat pumps.
*3 Recommended arrangement of temperature
sensor for solar operation:
Use brass elbow with sensor well (accessory)
in the solar collector return (see page 9 and 12).
Supplied adaptor sizes Vitocell 100-B
Part Size 79 USG
(300 L)
120 USG
(450 L)
BBrass cap 1 in. 1 1
ABrass adaptor 1 in. 3 1
CBrass tee 1 in. 1 --
DReducer hex bushing 1 in. x c in. 1 --
ESolar brass elbow 1 in. short sensor 1 --
GBrass adaptor 1 in. + gasket 4 4
ABrass adaptor 1a in. -- 2
CBrass tee 1a in. -- 1
DReducer hex bushing 1a in. x c in. -- 1
ESolar brass elbow 1a in. -- 1
F Temperature and
pressure relief valve
cin. 1 1

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5608 488 v1.2
Vitocell 100-B Installation Instructions
Recommended installation clearances for service access
IMPORTANT
CAUTION
Install the DHW tank in a frost-protected and draft-free
room. Otherwise it must be drained when not in use, in
order to reduce the risk of damages caused by freezing.
Provide sufficient clearances towards the wall to allow
the aquastat to be operated (if installed).
Rear in. (mm) 18 (460)
Sides May be reduced if rear pipe connections can be reached with less clearance in. (mm) 12 (300)
Top in. (mm) 12 (300)
Front in. (mm) 26 (650)
All sides in. (mm) 0 (0)
Floor combustible
Minimum clearance to combustibles
- For narrow passageways, remove upper and lower
portion of crating and carry DHW tank to its installation
location by means of crating boards mounted on the tank.
- Position tank carefully and remove wood crating.
- Leave adequate clearance to the wall or other objects
enabling easy access to the aquastat (where applicable).
- Install tank(s) on flooring or foundation capable of
supporting the weight of the tank(s) filled with water.
- The tank does not require a special foundation and
can be placed directly on the floor. If, for cleanliness
purposes, the tank is to be kept off the floor, a
foundation can be used for each tank or tanks.
Tank Set-up
Set-up and Connections
1. Apply Loctite 55 as per supplied instructions to each
tank nipple. Use Loctite 55 provided in the installation
fittings package.
2. Connect female ends of brass adaptors to the tank
nipples.
IMPORTANT
When using the Vitocell 100-B tank for solar applications
always use a brass elbow complete with sensor well on
the solar collector return connection.
CAUTION
Do not over-tight the adaptors as this may damage the
Ceraprotect enamel of the Vitocell 100-B tank.
Refer to the “Installation of DHW
temperature sensor for solar operation”
in the respective tank Installation
Instructions.

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5608 488 v1.2
Vitocell 100-B Installation Instructions
1. Level the DHW tank with its leveling bolts.
2. Remove top panel and the thermal insulation blanket.
3. Push sensor of upper thermometer all the way into
clamping bracket.
4. Guide the lower thermometer cable through the
insulation blanket and the cable channel.
5. Position the thermometer probe on the outside of the
location spring (not in the groove), so that it is flush
with the front of the spring.
6. Push the cable into the holder.
7. Insert the sensor mounting hardware with the
thermometer probe until it bottoms out inside the
sensor well.
79 USG (300 Liter) Tank Installation
Temperature sensor installation for solar operation
The temperature sensor for solar operation is included in
the solar control unit package.
The brass elbow with sensor well is available as an option
and must be used when solar connection is required.
1. For solar operation, install the sensor well into the
brass elbow and connect the assembly to the solar
return line.
2. Insert the temperature sensor until it bottoms out
inside the sensor well.
IMPORTANT
Thermal insulation and thermometer installation
Never wrap insulating tape around the thermometer
probe.
IMPORTANT
Do not extend the leveling bolts beyond an overall
length of 1½ in. (35 mm)
IMPORTANT
Note: the 79 USG (300 L) tank comes with the insulation
jacket installed.
Never wrap insulating tape around the sensor. Do not
install solar tank sensor anywhere other than the brass
elbow with sensor well.
Set-up and Connections

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5608 488 v1.2
Vitocell 100-B Installation Instructions Set-up and Connections
79 USG (300 Liter) Tank Installation (continued)
Temperature sensor installation (when using a Vitotronic
200 / 300 or Vitodens 200)
The primary DHW tank temperature sensor is included in
the boiler control unit package. Never wrap insulating tape around the sensor.
4. Insert the sensor mounting hardware with the sensor
until it bottoms out inside the lower sensor well.
Note: When using a Vitotronic 100 boiler control, refer
to page 14 for aquastat installation.
IMPORTANT
Checking the anode connection
IMPORTANT
1. Remove sensor mounting hardware from sensor well.
2. Position the temperature sensor on the outside of the
location spring (not in the groove), so that it is flush
with the front of the spring.
3. Attach sensor cable to clip.
1. Ensure grounding cables are properly connected to the
magnesium anode.
2. Install top insulation blanket.
3. Attach name plate to top cover and secure cover with
supplied screws.
When connecting an externally powered anode to the top
flange lid, separate the magnesium anode in the bottom
flange lid from the grounding cable. The magnesium anode
may remain installed.

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5608 488 v1.2
Vitocell 100-B Installation Instructions
120 USG (450 Liter) Tank Installation
1. Fit the thermal insulation blanket below the tank prior
to the installation of the tank itself.
2. Position and level the DHW tank with its leveling bolts.
Thermal insulation and thermometer installation
All necessary parts for enclosure assembly are packaged
in a separate carton.
CAUTION
The thermal insulation must not come in contact with
open flames. Exercise extreme caution when welding
and soldering.
IMPORTANT
Do not extend the leveling bolts beyond an overall
length of 1½ in. (35 mm).
Set-up and Connections

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5608 488 v1.2
Vitocell 100-B Installation Instructions Set-up and Connections
120 USG (450 Liter) Tank Installation (continued)
Temperature sensor installation for solar operation
Never wrap insulating tape around the sensor.
4. Insert the sensor mounting hardware with the sensor
until it bottoms out inside the lower sensor well.
Note: When using a Vitotronic 100 boiler control, refer
to page 14 for aquastat installation.
Temperature sensor installation (when using a Vitotronic
200 / 300 or Vitodens 200)
The primary DHW tank temperature sensor is included in
the boiler control unit package. IMPORTANT
1. Remove sensor mounting hardware from sensor well.
2. Position the temperature sensor on the outside of the
location spring (not in the groove), so that it is flush
with the front of the spring.
3. Attach sensor cable to clip.
1. For solar operation, install the sensor well/brass elbow
and connect the assembly to the solar return line.
2. Insert the temperature sensor until it bottoms out
inside the sensor well.
3. Tighten screws to secure sensor (do not over tighten).
IMPORTANT
Never wrap insulating tape around the sensor. Do not
install solar tank sensor anywhere other than the brass
elbow with sensor well.
The brass elbow with sensor well (supplied with the tank
fittings) must be used when solar connection is required.

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5608 488 v1.2
Vitocell 100-B Installation Instructions
120 USG (450 Liter) Tank Installation (continued)
Fitting the thermal insulation jacket
Note: - insulation remnants must not enter the tank
through the tank connections.
- 2 people are recommended to complete this work.
1. Fit both halves of the insulation jacket close to the tank.
Orient the jacket so the profile cutouts match the tank
fittings.
2. At the rear of the tank, install all 6 clip closures evenly
to both halves of the insulation jacket.
3. At the front of the tank, install all 6 clip closures evenly
to both halves of the insulation jacket.
4. At the rear of the tank, tighten all 6 clip closures until
both halves of the insulation jacket meet.
5. At the front of the tank, tighten all 6 clip closures
until both halves of the insulation jacket meet.
Set-up and Connections

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5608 488 v1.2
Vitocell 100-B Installation Instructions Set-up and Connections
120 USG (450 Liter) Tank Installation (continued)
Fitting the thermometer and thermometer sensor
(if supplied) and covers
1. Smooth out the insulation jacket by tapping the jacket
evenly against the tank.
2. Route thermometer capillary tube through the
front cover hole and insulation jacket, then snap the
thermometer in place.
3. Insert the thermometer probe under the clip.
4. Install the front cleanout cover and the front lower
seam cover.
5. Install the upper front seam cover.
6. Install the back seam cover.
7. Install the top insulation and press down the edges
as shown.
8. Install the top lid and press the logo Ainto the lid.
Note: Seal the hole in the seam cover below the
thermometer with a cover.

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5608 488 v1.2
Vitocell 100-B Installation Instructions
Aquastat Installation (when using a Vitotronic 100)
IMPORTANT
Use a Loctite 55 string and pipe dope on all threaded
nipples on tank.
Where a Vitotronic 100 and a Viessmann Power/Pump
Control Module (accessory) are utilized to control DHW
production, follow these aquastat mounting instructions:
1. Insert the extended capillary of the aquastat (supplied
with Viessmann Power/Pump Control Module, not
illustrated) fully and completely into sensor well. Mount
aquastat inconspicuously on tank paneling.
Follow instructions below with regard to sensor and
spring clip installation.
... if aquastat is to be mounted remote from the tank well,
2. Align sensor bulb with spring clip.
3. Slide assembly into well.
4. The retention spring clip must press the bulb properly
to ensure surface contact with the well.
... if aquastat is to be mounted directly on the tank well,
5. Mount aquastat with holding clip supplied directly onto
well. Bend capillary tube into groove opening to allow
for mounting of aquastat.
Grounding connection
Connect the grounding in accordance with the requirements
stipulated by your local electricity supply company and
current local regulations.
WARNING
To ensure optimum, safe operation, the supplied
stainless steel well must be installed. The well diameter
is large enough to accommodate a wide variety of
sensing bulbs.
Always use spring clip to ensure proper contact of
capillary bulb against the stainless steel well for proper
sensing/heat transfer!
Probe style aquastat
WARNING
Domestic hot water temperatures over 125° F (52° C)
can cause severe burns instantly or death from scalds.
Children, disabled and elderly are at highest risk of
being scalded.
Feel water before bathing or showering.
Temperature limiting valves are available and must
be used where domestic hot water storage tank
temperatures exceed 140° F (60° C).
WARNING
The operating aquastat and any secondary high limit
aquastat of the tank must be set such that the DHW
temperature inside the tank never exceeds 203° F (95° C).
Set-up and Connections

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5608 488 v1.2
Vitocell 100-B Installation Instructions Set-up and Connections
Boiler Water Connections (heat exchanger connection)
Recommended piping for solar application with individual DHW tank
Legend
A Solar collector
B Vitocell-B 100
C Filling valve
D Solar-Divicon (pumping station)
E Recirculating pump
FAnti-scald temp[ering valve
HC Heating circuit
B Oil/Gas-fired boiler
DCW Domestic cold water
DHW Domestic hot water
T&P Temperature and pressure relief valve
1. For boiler water supply temperatures over 203° F (95° C):
Remove plastic supply and return grommets
(grommets are left-threaded).
2. Pipe supply line with an incline and install an air vent
valve at the highest point.
3. For boiler water supply temperatures over 230° F
(110° C):
Install a type-tested high limit safety cut-out, if no other
has previously been installed in this system. For this
purpose, install a dual thermostat (high limit thermostat
and high limit safety cut-out).
4. Close off test nipples which are not used for the
installation of a probe or sensor.
Use a Loctite 55 string and pipe dope on all threaded
nipples on tank.
DANGER
Due to the potentially high DHW temperatures generated
by the solar heating system, the domestic hot water
temperature must be limited to a maximum of 140º F (60º C)
by installing a anti-scald tempering valve. The tempering
valve does not completely eliminate the risk of scalding at
the tap. The installation of a mixing tap is recommended.
IMPORTANT

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5608 488 v1.2
Vitocell 100-B Installation Instructions
Domestic Water Connections
Use a Loctite 55 string and pipe dope on all threaded
nipples on tank.
IMPORTANT
Note: - Connect all pipe work with detachable fittings.
- Seal connections that are not required with red
brass caps.
- Equip the DHW circulation pipe with circulation
pump, check valve and time switch. Gravity
operation is only feasible to a limited degree.
- Always install DHW group of tanks with
connected DHW circulation.
1. Pipe together boiler and tank as illustrated. Connections
must be accessible for service (use factory supplied
adaptors).
2. Insulate domestic hot water supply piping.
Legend
A Spring-loaded flow check valve
B Discharge pipe
C Anti-scald tempering valve (field supplied)
SV Shut-off valve
FV Flow check valve
PR Pressure reducing valve
D Drain
DCW Cold water supply lines
PGC Pressure gage connection
E Precharged expansion tank (required where
backflow preventer is installed; check local
plumbing codes and requirements)
BP1 Backflow preventer
BP2 Backflow preventer
T&P Temperature and pressure relief valve
DW Water filter
DHW Domestic hot water supply
RP Recirculation pipe
RPU Recirculation pump
IMPORTANT
This is a simplified conceptual drawing only! Piping and
necessary componentry must be field verified. Proper
installation and functionality in the field are the responsibility
of the heating contractor.
Set-up and Connections

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5608 488 v1.2
Vitocell 100-B Installation Instructions Set-up and Connections
Domestic Water Connections (continued)
WARNING
The discharge line for the T&P valve must be oriented
to prevent scalding of attendants.
IMPORTANT
Always ensure the use of type approved devices.
Safety devices include the following components:
In situations where a booster pump is used to maintain
DHW pressure, Viessmann strongly recommends the
installation of an oversized expansion tank to ensure
longer, less frequent pump cycles with less severe
pressure gradients. If possible, use flexible piping before
and after booster pump to isolate system piping from
vibration and shocks.
- Temperature and pressure relief valve
A temperature and pressure relief valve (T&P valve)
is supplied with the tank. The heating contractor must
install the valve on each tank in a method meeting code
requirements.
If local codes require a different relief valve, consult
Viessmann Manufacturing for a substitute valve.
The tank is approved for 150 psig. Maximum operating
pressure is 150 psig.
The T&P valve supplied with the tank is tested under
ANSI Z21.22 Code for Relief Valves and Automatic
Gas Shut-off Devices for Hot Water Supply Systems.
WARNING
The valve test lever must be operated at least once per
year by a licensed professional heating contractor to
ensure that waterways are clear. A licensed
professional heating contractor shall reinspect the T&P
valve at least once every three years. Failure to inspect
can result in unsafe temperature or pressure build-up,
which can result in death, serious injury or substantial
product/property damage.
- Isolation valves
- Drain valve
- Pressure reducing valve where required by local jurisdiction
- Drinking water filter where required by local jurisdiction
- Backflow preventer
Where backflow preventers are required, a domestic
water expansion tank installation is required in the cold
water inlet piping before the cold water enters the tank.
The backflow device must be installed according to
the manufacturer’s installation instructions. Observe
local codes and regulations.
- Tempering valve
A tempering valve must be field installed where storage
tank (domestic hot water temperature) exceeds local
restricted temperatures or 140° F (60° C). Check code
requirements.
Proper installation of the T&P valve shall include all of the
following:
- The T&P valve shall be installed in the pipe connection
point marked TPV in the tank instruction manual.
- The discharge line from the T&P valve shall be ¾ in.
(1.9 cm) 7and run to a safe place of discharge
approximately 1 ft. (30 cm) above the floor, close to
a floor drain.
- The discharge line must be as short as possible and
pitch downward from the T&P valve and terminate plain.
- DO NOT route discharge line to the outdoors.
- DO NOT install any type of valve or an obstruction
of any kind between the tank and the T&P valve or
between the T&P valve and the discharge line outlet.
Watts Model 40XL-8 150 psig
ASME pressure
steam rating
1438 MBH
CSA temperature
steam rating
205 MBH
Relief temperature 210° F (99° C)
Inlet thread c” male
Outlet thread c” female

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5608 488 v1.2
Vitocell 100-B Installation Instructions
Additional Information
Pressure Drop Information
Pressure drop on heating water side
of a single coil
Domestic hot water pressure drop
A Upper indirect coil, 79 USG (300 L) capacity
B Lower indirect coil, 79 USG (300 L) capacity and
upper indirect coil, 120 USG (450 L) capacity
C Lower indirect coil, 120 USG (450 L) capacity
A 79 USG (300 L)
B 120 USG (450 L)
Flow rate
Pressure drop
Flow rate
Pressure drop

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5608 488 v1.2
Vitocell 100-B Installation Instructions
Inspection Opening and Front Cover
1. Install front insulation blanket.
2. Install inspection cover and front cover.
3. Tighten screws.
Additional Information
Post Installation
Start-up information
DHW Tank Start-up/Service Instructions
Service binder
1. File all Parts Lists, Operating and Service Instructions
in the Service Binder.
2. Install a protective hanging case near the boiler and
store the Service Binder in this location.
For a listing of applicable Viessmann literature, please
see Important Regulatory and Installation Requirements
on page 4.
1. Install front insulation blanket.
2. Install inspection cover.
Inspection opening and front covers for 79 USG (300 L) tank Inspection opening and front cover for 120 USG (450 L) tank

Vitocrossal 200 CM2 Installation Instructions
5608 488 v1.2 Technical information subject to change without notice. Printed on environmentally friendly
(recycled and recyclable) paper.