Installation Instructions
Dekamatik-HK1
Digital indoor/outdoor heating circuit control unit
for mounting on the mixing valve, Part No. 7450 107
for wall mounting, Part No. 7450 110
Please file in Service Binder
Dekamatik-HK1
5167 137 1/99
Safety
Safety, Installation and Warranty Requirements
Please ensure that this manual is read and understood before commencing installation. Failure to comply with the issues listed below
and details printed in this manual can cause product/property damage, and/or severe personal injury. Ensure all requirements below are
understood and fulfilled (including detailed information found in manual subsections).
H Licensed professional heating
contractor
The installation, adjustment, service, and
maintenance of this equipment must be
performed by a licensed professional
heating contractor.
"
Please see sections
entitled “Safety” and
“Important Installation
Requirements.”
H Product documentation
Read all applicable documentation before
commencing installation. Store
documentation near boiler in a readily
accessible location for reference in the
future by service personnel.
"
For a listing of applicable
literature, please see
section entitled “Important
Installation Requirements.”
H 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, shut-down procedure, and
the need for professional service annually
before the heating season begins.
H Warranty
Information contained in this and related
product documentation must be read and
followed. Failure to do so renders warranty
null and void.
Safety Terminology
The following terms are used throughout this manual to bring attention to the presence of potential hazards or important product information.
Please heed the advice given!
DANGER
Indicates an imminently hazardous
situation which, if not avoided, will
result in death, seriou s injury or
substantial product/property
damage.
WARNING
Indicates an imminently hazardous
situation which, if not avoided, could
result in death, seriou s injury or
substantial product/property
damage.
CAUTION
Indicates an imminently hazardous
situation which, if not avoided, may
result in minor injury or
product/property damage.
IMPORTANT
Helpful hints for installation, operation or
maintenance which pertain to the
product.
2
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Page
Contents
Important Precautions
Information
Heating System Types
Installation
Electrical Connections
Safety 4...........................................................................................
Important Installation Requirements
Product Information 5................................................................
-
Application Example 1 6...........................................................
- One heating circuit with mixing valve
- Dekamatik-HK 1 for mounting on the mixing valve or
- for wall mounting
Application Example 2 7
- One underfloor heating circuit with mixing valve
- Dekamatik-HK 1 for mounting on the mixing valve or
- for wall mounting
Dekamatik-HK1 for Mounting on the Mixing Valve 8.......
Dekamatik-HK1 for Wall Mounting 9.....................................
Overview 10.....................................................................................
Sensors 12.......................................................................................
Supply temperature sensor 12.....................................................
Outdoor temperature sensor 13...................................................
...........................................................
Appendix
Accessories 14...............................................................................
Room temperature sensor 14.......................................................
Wall mounting fixture 14.................................................................
WS/RS remote control unit 15......................................................
Heating circuit pump 115 V 16.......................................................
Heating circuit pump with high current or 3-phase 17..............
Other Connection Facilities 18..................................................
External heat demand / External heat disable 18....................
Mixing valve motor 18.....................................................................
Compiled fault indication 19...........................................................
Power Supply 20............................................................................
Post-Installation Testing 21........................................................
Checklist 21......................................................................................
Service binder 21.............................................................................
Dimensions / Technical Data 22................................................
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3
Important Precautions
Safety
Take note of all symbols and notations intended to draw attention to potential hazards or important product information.
These include “DANGER,” “WARNING,” “CAUTION,” and “INFORMATION.” See page 2 for details.
Approvals
Viessmann boilers, burners and controls
are approved for sale in North America by
International Approval Services (IAS). All
electrical wiring is to be done in
accordance with the latest edition of the
National Electrical Code ANSI/NFPA 70.
In Canada use latest edition of CSA
C22.1 Part 1 and/or local codes.
Working on the equipment
The installation, adjustment, service, and
maintenance of this boiler must be done
by a licensed professional heating
contractor who is qualified and
experienced in the installation, service,
and maintenance of hot water heating
equipment. There are no user-serviceable
parts on this equipment.
IMPORTANT
Please carefully read this manual prior
to attempting installation. Any
warranty is null and void if these
instructions are not followed.
We offer frequent installation and
service seminars to familiarize our
partners with our products. Please
inquire.
WARNING
Turn off electric
power supply before
servicing. Contact
with live electric
components can
cause shock or loss
of life.
Important Installation Requirements
Power supply
Install power supply in accordance with
the regulations of the authorities having
jurisdiction or, in the absence of such
requirements, in accordance with National
Codes.
Viessmann recommends the installation
of a disconnect switch to the 120 V power
supply outside of the boiler room. The
installer must provide maximum 15 A
overcurrent protection for the 120 V
power supply (fuse or circuit breaker).
Literature applicable to installation of the
Dekamatik-HK 1:
- Installation Instructions
- Start-up and Service Instructions
- Operating Instructions
- Installation codes mentioned in this
manual
IMPORTANT
Ensure that all contacts have sufficient
insulation clearance to live parts and
are certified for these applications.
Proper consultation with Viessmann
Manufacturing Company Inc. should
occur when installing components not
included in the Viessmann product
line.
No static discharge to the internal
componentry must ever occur when
working with opened control
equipment.
IMPORTANT
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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4
Product Information
Information
Digital indoor/outdoor heating circuit control unit for one heating circuit with mixing valve,
either
with drive module for mounting on Viessmann mixing valve
or
for wall mounting and connection of a separate mixing valve motor.
5167 137
5
Heating System Types
Application Example 1
- One heating circuit with mixing valve
- Dekamatik-HK1
Instead of the Dekamatik-HK 1 for mounting on the mixing valve it is also possible to use a Dekamatik-HK 1 for wall mounting in
conjunction with a separate mixing valve motor.
Dekamatik-HK 1 for mounting on
the mixing valve
Heating circuit
Supply header
Return header
*1
It is possible to connect a separate room temperature sensor (accessory) instead of the outdoor temperature sensor for the purpose of
*1
a purely room temperature dependent control.
*1
If the outdoor temperature value of the boiler or heating circuit control unit is used via the Viessmann 2-wire BUS, a room temperature
*1
sensor can be connected for room temperature dependent control (only possible with communication module, accessory).
*2
Only in conjunction with communication module (accessory).
6
Outdoor temperature sensor
Supply temperature sensor
Heating circuit pump
Power supply
Remote control
ATS = Outdoor temperature sensor
VTS = Supply temperature sensor
*1
*2
Viessmann 2-wire BUS
for communication with other
Dekamatik control units
External heat demand /
external heat disable
5167 137
Heating System Types
Application Example 2
- One underfloor heating circuit with mixing valve
- Dekamatik-HK1
Instead of the Dekamatik-HK 1 for mounting on the mixing valve it is also possible to use a Dekamatik-HK 1 for wall mounting in
conjunction with a separate mixing valve motor.
Dekamatik-HK 1 for mounting on
the mixing valve
Underfloor heating circuit
Supply header
Return header
*1
It is possible to connect a separate room temperature sensor (accessory) instead of the outdoor temperature sensor for the purpose of
*1
a purely room temperature dependent control.
*1
If the outdoor temperature value of the boiler or heating circuit control unit is used via the Viessmann 2-wire BUS, a room temperature
*1
sensor can be connected for room temperature dependent control (only possible with communication module, accessory).
*2
Only in conjunction with communication module (accessory).
5167 137
Outdoor temperature sensor
*1
Supply temperature sensor
Return temperature sensor
(accessory) (see separate
instructions regarding installation
and electrical connections)
Heating circuit pump
Power supply
Remote control
ATS = Outdoor temperature sensor
VTS = Supply temperature sensor
RLS = Return temperature sensor
*2
Viessmann 2-wire BUS for
communication with other
Dekamatik control units
External heat demand /
external heat disable
7
Installation
Dekamatik-HK1 for Mounting on the Mixing Valve
1. Screw the threaded bolts (M6 or M8
female thread depending on size of
mixing valve) onto the threaded
bolts
of the mixing valve.
Fig. 1
Mounting the Dekamatik-HK 1 on the mixing valve
2. Place the base plate
screw on with the washers and nuts
provided.
3. Snap the control unit
module
fasten with the screws provided.
onto the base plate ;
in position and
with drive
8
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