Page 1
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
Page 2
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
Page 4
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
Page 5
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.
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5
Page 6
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
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Page 7
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
Page 8
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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Page 9
Dekamatik-HK1 for Wall Mounting
Installation
1. Pull the wall mounting fixture off the
control unit
.
Fig. 2
Mounting the Dekamatik-HK 1 on the wall
2. Fasten the wall mounting fixture
the wall with three screws.
3. Carry out the electrical connections
(i.e. mixing valve motor and compiled
fault indication) (see page 18 and 19).
4. Pull off the cover
5. Push the control unit
guideways
fixture
provided.
6. Re-fit the cover .
; fasten with the screws
.
in the
onto the wall mounting
to
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Page 10
Electrical Connections
Overview
Open up the terminal compartment by
unscrewing the screws
below the programming unit .
Mother board
for heating circuit pump
Connect via connector
for power supply.
Cord and plug factory supplied;
AC 120 V~ 60 Hz;
15 A receptacle required (field
supplied).
Fuse F1
On/off switch
Strain relief clamp
Fig. 3
Electrical connections
10
in the cover
AC 120 V~
Low voltage connections
X14 for outdoor temperature
sensor or room temperature
sensor (accessory)/
supply temperature sensor
X3 not used
or
X3 for return temperature
sensor (accessory) in
conjunction with underfloor
heating circuit
X1 for WS/RS remote control
unit (accessory)
or
X16 for wall mounting fixture
(assembly)
for using Comfortrol programming unit as a remote control
X1 1 for external heat demand
(open mixing valve) / external
heat disable (close mixing
valve)
or
for external changeover of
the heating program
X16 not used
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Page 11
Overview (continued)
Electrical Connections
Wall mounting fixture
Terminal strips for connection of
mixing valve motor or compiled fault
indication
Fig. 4
Electrical connections in the wall mounting fixture;
Dekamatik-HK1 for wall mounting
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Page 12
Electrical Connections
Sensors
Supply temperature sensor (strap-on sensor)
Fig. 5
Supply temperature sensor
IMPORTANT
Mount the supply temperature sensor
downstream from the heating circuit
pump on the heating supply pipe at a
distance of approx. 3 to 5 ft /
1 to 1.5 m from the mixing valve.
Where plastic pipes are used, mount the
sensor on an intermediate metal pipe
section. It is not necessary to use heat
conductive paste.
Fig. 6
Installing the supply temperature sensor downstream from the bypass valve
Fig. 7
Opening the case
If a pressure-activated bypass valve
installed, mount the sensor
supply pipe immediately after the bypass
valve.
1. Thoroughly clean the heating supply
pipe until metallically bright.
2. Open the case
screwdriver.
3. Place the perforated mounting strap
(supplied inside the sensor case) on
the tensioning screw
the supply pipe
the tensioning screw; tighten the
tensioning screw.
4. Close the sensor case.
of the sensor with a
and place back on
on the
, run it around
is
IMPORTANT
The sensor must not be insulated.
Fig. 8
Opening the supply temperature sensor and fastening with perforated mounting strap
12
5. If the outdoor temperature sensor
or a room temperature sensor is
to be connected, go to page 13.
Otherwise, insert connector
in socket “X14” in the terminal
compartment (see page 10); install
strain relief clamp.
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Page 13
Sensors (continued)
Outdoor temperature sensor
If the outdoor temperature sensor of the boiler or heating circuit control unit is used via the Viessmann
2-wire BUS, it is not necessary to connect the outdoor temperature sensor provided. A room
temperature sensor can be connected instead of the outdoor temperature sensor (see page 14).
Electrical Connections
Fig. 9
Mounting the outdoor temperature sensor
1. Remove the cap
2. Mount the bottom part of the case
(cable entry must point
downwards).
.
IMPORTANT
The outdoor temperature sensor should
be mounted 6½ to 8¼ ft / 2 to 2.5 m above
ground level on the north or north-west
facing wall of the bu ilding. In the case of
multi-storey buildings, it should be
mounted in the upper half of the second
storey.
If different parts of the building are
controlled via separate heating circuits,
the outdoor temperature sensor should
be mounted on the corresponding side
of the building. For example, if the
heating circuit controls the south- facing
part of the building, the outdoor
temperature sensor must be mounted on
the south-facing wall.
Ensure that the outdoor temperature
sensor is not located over windows,
doors and air vents, nor immediately
beneath a balcony or guttering.
The outdoor temperature sensor must
not be plastered over. If mounting on an
unplastered wall, make allowances for
thickness of plaster or remove sensor
before plastering wall.
Outdoor temperature sensor
Supply temperature sensor
Fig. 10
5167 137
Connecting the outdoor temperature sensor to the Dekamatik-HK 1
3. Connect the cable to the terminals
(the wires are interchangeable).
Cable:
AWG 16/2, copper; max. 115 ft / 35 m.
4. Place cap
5. Connect the 2-wire cable from the
outdoor temperature sensor to
connector
(the wires are interchangeable).
6. Break open the cable bushing; install
strain relief clamp.
7. Insert connector
the terminal compartment (see
page 10); install strain relief clamp.
over base and snap on.
at terminals “1” and “2”
in socket “X14” in
13
Page 14
Electrical Connections
Accessories
Room temperature sensor
1. Mount the room temperature sensor in
accordance with the separate
installation instructions.
2. Connect the 2-wire cable from the
room temperature sensor to
connector
(the wires are interchangeable).
3. Break open the cable bushing; install
strain relief clamp.
4. Insert connector in socket “X 14”
in the terminal compartment (see
page 10); install strain relief clamp.
at terminals “1” and “2”
Room temperature sensor
Supply temperature sensor
Fig. 11
Connecting the room temperature sensor to the Dekamatik-HK 1
Wall mounting fixture (for using the programming unit as a remote control)
The programming unit of the control unit
can be used as a remote control in the
wall mounting fixture (accessory).
1. Remove the cover
2. Take the programming unit
the control unit.
3. Fit the blank cover of the wall
mounting fixture in the control unit.
.
out of
Fig. 12
Taking the programming unit out of the control unit
14
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Page 15
Accessories (continued)
Electrical Connections
4. Mount the wall mounting fixture in
accordance with the separate
installation instructions.
5. Connect the 2-wire cable from the wall
mounting fixture to connector
terminals “1” and “2” (the wires are
interchangeable).
6. Break open the cable bushing; install
strain relief clamp.
at
Wall mounting fixture
Fig. 13
Connecting the wall mounting fixture to the Dekamatik-HK1
WS remote control unit
RS remote control unit
7. Insert connector
the terminal compartment (see
page 10); install strain relief clamp.
8. Insert the programming unit in the wall
mounting fixture.
1. Mount the remote control unit in
accordance with the separate
installation instructions.
2. Connect the 3-wire cable from the
remote control unit to connector
in socket “X 16” in
.
Remote control unit
Fig. 14
5167 137
Connecting the remote control unit to the Dekamatik-HK 1
3. Break open the cable bushing; install
strain relief clamp.
4. Insert connector
the terminal compartment (see
page 10); install strain relief clamp.
in socket “X 1” in
15
Page 16
Electrical Connections
Accessories (continued)
Heating circuit pump 115 V
WARNING
In the case of underfloor heating
systems, a high limit aquastat
(immersion or strap-on type)
must be installed in the heating
supply downstream from the mixing
valve and the heating circuit pump.
In this case connect the heating
circuit pump to the high limit
aquastat (see separate Installation
Instructions).
1. Install the heating circuit pump in
accordance with the manufacturer’s
specifications and instructions.
Rated current : AC 4 (2) A
Fig. 15
Connecting the 115 V pump
2. Disconnect the connector from the
heating circuit pump (if connected);
connect the 3-wire cable from the
heating circuit pump to connector
3. Insert connector
the heating circuit pump.
in the socket for
.
16
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Page 17
Accessories (continued)
Heating circuit pump with high current or 3-phase
Electrical Connections
1. Install the heating circuit pump in
accordance with the manufacturer’s
specifications and instructions.
2. Select contactor and connection wire
according to the rating of the pump to
be connected.
3. Connect the heating circuit pump to the
contactor.
IMPORTANT
3-Phase pumps require use of contactors
with overload protection.
Contactor
High current or 3-phase pump
Fig. 16
Connecting the high current or 3-phase pump
4. Connect contactor to connector
5. Insert connector
heating circuit pump in the terminal
compartment (see page 10); install
strain relief clamp.
in socket for
.
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Page 18
Electrical Connections
Other Connection Facilities
External heat demand / External heat disable
When the “external heat demand” contact is activated, the mixing valve is opened.
When the “external heat disable” contact is activated, the mixing valve is closed.
1. In the plug-in connector
provided, connect a potentialfree contact for
- external heat demand
or
external changeover of the
heating program (see Service
Instructions for the coding
required) at terminals “3” and “2”
- external heat disable at terminals
“1” and “2.”
2. Break open the cable bushing; install
strain relief clamp.
3. Insert connector
the terminal compartment (see
page 10); install strain relief clamp.
External heat demand
or
external changeover of the heating program
External heat disable
Fig. 17
Connecting external heat demand / external heat disable
Mixing valve motor only with Dekamatik-HK 1 for wall mounting
H Connect the 4-wire cable from the
mixing valve motor to terminals “X3,”
“X4.1,” “X4.2” and “X4.3” in the wall
mounting fixture of the Dekamatik-HK 1
as shown in Fig. 18.
Mixing valve open
Mixing valve closed
in socket “X 11” in
Wall mounting fixture
Fig. 18
Connecting the mixing valve motor
18
IMPORTANT
The Dekamatik-HK 1 incorporates a
120 V mixing valve output.
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Page 19
Electrical Connections
Other Connection Facilities (continued)
Compiled fault indication only with Dekamatik-HK 1 for wall mounting
Data transfer and sensor faults are reported.
In conjunction with a Dekamatik boiler control unit, a compiled fault message is also
relayed to these via the Viessmann 2-wire BUS (accessory).
1. Select the signal device (provided by
the customer).
Rated voltage: AC 120 V~
Rated current: AC 4 (2) A
2. Carry out the connection to terminals
“X3,” “X4.4” and “X4.5” in the wall
mounting fixture of the Dekamatik-HK 1
as shown in Fig. 19.
Wall mounting fixture
Fig. 19
Connecting the compiled fault indication
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Page 20
Electrical Connections
Power Supply
Safety requirements
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.
The Dekamatik-HK 1 is standard equipped with a 120 V power cord. A receptacle with
a max. 15 A circuit breaker or fuse is required (field supplied).
20
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Page 21
Post-Installation Testing
Checklist
Appendix
Check the following conditions and
correct deficiencies.
j Ensure all electrical connections have
been correctly made.
j Ensure positive connection of all
plug-in connectors.
j Ensure mixing valve motor is properly
connected.
j Ensure correct rotational direction of
mixing valve motor and, if necessary,
change in accordance with the Service
Instructions.
j Ensure heating circuit pump is properly
connected.
Service binder
Please keep all relevant Operating
Instructions and Service Documents in
the Operating and Service Document
Binder.
We advise you to keep the binder in a
clearly visible and accessible position.
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21
Page 22
Appendix
Dimensions / Technical Data
Mounting on the mixing valve
Wall mounting
Rated voltage: AC 120 V~
Rated frequency:60 Hz
Rated current: AC 4 A
Power
consumption: 7 VA
Protection class: I
Test class: II
Degree of
protection: IP 22 D to EN 60529
Ambient
temperature
- during
operation: 32 to 104 °F
0to +40°C
- during storage
and transport: -4 to +104 °F
-20 to +65°C
Dead zone of
PI controller for
mixing valve
with slope
”=1.4: 1.2 K
“
Relay outputs
for
- heating circuit
pump
- compiled fault
indication: AC 4(2) A 120 V~
- mixing valve: AC 0,2(0,1) A 120 V~
- total: max. AC 4 A 120 V~
: AC 4(2) A 120 V~
Fig. 20
Dimensions
22
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Page 23
Notes
Appendix
5167 137
23
Page 24
Printed on environmentally friendly
(recycled and recyclable) paper.
Viessmann Manufacturing Company (U.S.) Inc.
45 Access Road
Warwick, Rhode Island • 02886 • USA
Tel. (401) 732-0667 • Fax (401) 732-0590
www.viessmann-us.com • mail@viessmann-us.com
24
Viessmann Manufacturing Company Inc.
750 McMurray Road
Waterloo, Ontario • N2V 2G5 • Canada
Tel. (519) 885-6300 • Fax (519) 885-0887
www.viessmann.ca • mail@viessmann.ca
Technical information subject to change without notice.
5167 137
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