Viessmann VITOCELL 300-H User manual

Installation Instructions
VITOCELL
r
300
-H
5696 675 - 04 02/2018
for use by heating contractor
Vitocell 300-H
EHA Series
Indirect-fired domestic hot water storage tank
42 USG to 119 USG (160 L to 450 L) capacity
Read and save these instructions
for future reference.
IMPORTANT
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.
Please file in Service Binder
Product may not be exactly as shown

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5696 675 - 04
Vitocell 300-H, EHA Series Installation
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).
Licensed professional heating contractor
The installation, adjustment, service and maintenance
of this equipment must be performed by a licensed
professional heating contractor.
Please see section entitled
“Important Regulatory and Installation
Requirements”.
Product 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.
For a listing of applicable literature,
please see section entitled “Important
Regulatory and Installation Requirements”.
Advice 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.
Warranty
Information contained in this and
related product documentation must
be read and followed. Failure to do
so renders the warranty null and void.
CAUTION
The heat transfer medium must either be 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.

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Vitocell 300-H, EHA Series Installation 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
Tank Set-up...............................................................6
Recommended installation clearances for service access..6
Transport and Handling................................................7
Multiple Tank Set-up
[only for 92 and 119 USG (350 and 450 L)]..................8
Orientation and Dimensions..........................................9
Control Connections..................................................10
Boiler Water Connections (Heat Exchanger Connection)...11
Individual DHW Tank.................................................11
Multiple DHW Tanks
[only for 92 and 119 USG (350 and 450 L)]................12
Steam Heating Side Connections
[only for 92 and 119 USG (350 and 450 L)]................13
Individual DHW tank..............................................13
Multiple DHW tank................................................14
Domestic Water Connections......................................15
Recirculation Connections..........................................18
Pressure Drop Information..........................................19
Service...................................................................19
Introduction
Safety
General Information
Set-up
Connections
Additional Information
Page

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Vitocell 300-H, EHA Series Installation
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 Safety Data
Sheet (SDS) is supplied to the operator/ultimate owner
of the system. The use of Viessmann supplied “Tyfocor-
HTL” solar fill is recommended for the solar 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
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.
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
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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Vitocell 300-H, EHA Series Installation
About These 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.
Warnings draw your attention to the presence of
potential hazards or important product information.
Cautions draw your attention to the presence of
potential hazards or important product information.
Helpful hints for installation, operation or maintenance
which pertain to the product.
This symbol indicates that additional, pertinent
information is to be found.
This symbol indicates that other instructions must be
referenced.
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

42 and 53 USG (160 and 200 L) capacity
Indirect-fired domestic hot water storage tank with one
heat exchanger coil for use with hot water heating oilers.
92 and 119 USG (350 and 450 L) capacity
Indirect-fired domestic hot water storage tank with one
heat exchanger coil for use with hot water heating
boilers, commercial heating plants, and low-temperature
heating systems (larger heating surface).
General Information

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Vitocell 300-H, EHA Series Installation
Tank Set-up
Set-up
For narrow passageways, remove lower portion of
crating and carry DHW tank to its installation location
by means of crating boards mounted on the tank
lengthwise.
Packaged M8 bolts are necessary for the set-up of
a multiple tank installation.
Leave adequate clearance to the wall or other
objects enabling easy access to the aquastat (where
applicable).
Locate 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 tank battery.
A minimum clearance of 17¾” (450 mm) must be
maintained at the back of the tank for the installation
of the sensor well and DHW tank temperature sensor.
Level tank using leveling bolts on tank frame.
Leveling bolt
Storage capacity USG (L) 42 (160) 53 (200) 92 (350) 119 (450)
Rear inches (mm) 18 (460) 18 (460) 18 (460) 18 (460)
Sides May be reduced if rear
pipe connections can be
reached with less clearance
inches (mm) 12 (300) 12 (300) 12 (300) 12 (300)
Top inches (mm) 12 (300) 12 (300) 12 (300) 12 (300)
Front inches (mm) 24 (600) 24 (600) 24 (600) 24 (600)
Recommended installation clearances for service access
Storage capacity USG (L) 42 (160) 53 (200) 92 (350) 119 (450)
All sides inches (mm) 0 (0) 0 (0) 0 (0) 0 (0)
Minimum clearances to combustibles

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Vitocell 300-H, EHA Series Installation
Removing panels
1. Turn tank 90° to sit across its pallet.
2. Carefully unhook front panel.
3. Remove insulation.
4. Remove spring clip and carefully pull sensor of the
thermometer out of tank cap.
5. Remove insulation ring.
6. Pull side panels forward to remove.
7. Unscrew top panel.
Note: Only for the 92 USG (350 L)
Where access to the boiler room is difficult, remove
the front and side panels unscrew the adjustable
feet and turn the DHW tank on it’s side. This will
provide 2 in. less width.
8. Using a flat piece of wood and a rubber mallet,
carefully hammer inner front and rear panels off
the four corners and remove.
9. Move tank into mechanical room.
Transport and Handling
Set-up

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Vitocell 300-H, EHA Series Installation
Set-up
Two tanks, each with 92 USG (350 L) content and up
to three tanks, each with 119 USG (450 L) content,
may be stacked vertically.
1. Set-up and orient lower tank in its final location.
2. Remove levelling bolts of top tank.
3. Carefully unhook front panel.
4. Remove insulation.
5. Remove spring clip and carefully pull sensor of the
thermometer out of tank cap.
6. Pull side panels of top tank forward to remove.
Multiple Tank Setup [only for 92 and 119 USG (350 and 450 L)]
1. Place top tank on top of bottom tank and align.
2. Take packaged M8 bolts, drop in holes of top tank
support brackets and fasten to bottom tank support
brackets.
3. Reinstall side panels.
IMPORTANT
Install third tank (if applicable) in an identical fashion as
the second tank.
4. Fully insert sensor into opening in tank cap and
secure using spring-clip.
5. Install insulation.
6. Install front panel.

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5696 675 - 04
Vitocell 300-H, EHA Series Installation
Orientation and Dimensions
Connections
92 and 119 USG (350 and 450 L)
42 and 53 USG (160 and 200 L)
Legend
A Domestic hot water supply, T&P valve (and
recirculation tapping) (brass tee ¾ in.)
B Boiler water supply
C Aquastat well (brass reduction coupling 1 - b in.)
E Domestic cold water supply
F Boiler water return
Legend
A T&P valve (and recirculation tapping) (brass reduction
coupling 1 - ¾ in. or 1a - ¾ in.)
B Domestic hot water
C Boiler water supply
D Aquastat well (brass reduction coupling 1 in. - b in.)
E Domestic cold water
F Boiler water return
Storage capacity USG
(L)
42
(160)
53
(200)
92
(350)
119
(450)
184
(700)
238
(900)
357
(1350)
Number of tanks 1 1 1 1 2 2 3
Layout
Connections (individual Tanks)
Heating water supply/return 7”11
1a1a1a1a1a
Domestic cold/hot water 7”¾¾
1a1a1a1a1a
Pressure and temperature relief valve 7”¾¾ 1
1a11a1a

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Vitocell 300-H, EHA Series Installation
Connections
Control Connections
1. Install reducing coupling (included in (Connection
Fitting Package). Use approved pipe sealant.
2. Install sensor well using sealant.
Where Vitotronic 200 or 300 is utilized to control DHW
production:
3. Insert DHW tank temperature sensor (supplied with
Vitotronic 200 or 300) fully and completely into
sensor well.
Due to the length of the stainless steel well (15” (380
mm)), care must be taken to ensure that the sensing
bulb of the limit is inserted and pushed to the end of
the stainless steel well.
Where a Vitotronic 100 and a Viessmann Power/Pump
Control Module are utilized to control DHW production:
4. 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
aquastat well:
5. Align sensor bulb with spring clip.
6. Slide assembly into well.
7. 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,
8. Mount aquastat with holding clip supplied directly
onto well. Bend capillary tube into groove opening
to allow for mounting of aquastat.
IMPORTANT
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!
Not present on 42 and 53 USG
(160 and 200 L) version