Installation Instructions
Vitotronic 300
Model KW3
Weather-responsive indoor/outdoor, digital boiler control
for heating systems with one or more heating circuits
Part No. Z001 231
VITOTRONIC 300
Certified as a component part
of Viessmann boilers only
5303 269v1.3 10/2011
Safety instructions
Safety Instructions
Safety, Installation and Warranty Requirements
Please ensure that these instructions are read and understood before commencing installation and operation. Failure to comply
with the instructions listed below and details printed in these instructions 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 sections
entitled “Safety” and
“Important Regulatory and
Installation Requirements”.
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
applicableliterature, 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, shut-down
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 warranty null and void.
Safety Terminology
One or more of 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, serious injury or
substantial product/property damage.
WARNING
Indicates an imminently hazardous
situation which, if not avoided, could
result in death, serious 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
5303 269 v1.3
Helpful hints for installation, operation or
maintenance which pertain to the
product.
2
Index
Page
Safety Instructions
Application Examples
Electrical Connections
......................................................................
2
Application Example 1
System with one direct-connected heating circuit
without mixing valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Application Example 2
System with one heating circuit with mixing valve
......
5
Application Example 3
System with one direct-connected heating circuit
without mixing valve and one heating circuit with
mixing valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
Application Example 4
System with two heating circuits with mixing valves . .
7
Application Example 5
System with one direct-connected heating circuit
without mixing valve and two heating circuits with
mixing valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
Overview
9
Safety Instructions
..........................................................................................
Vitotronic Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Application of Strain Relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Sensors
.............................................................................................
......................................................................
16
................................................................................................
17
Pumps (accessory)
Burner
13
Compiled Fault Indicator Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
.....................
19
............................................................................
20
External Switching of the Heating Program
Settings
Fixed High Limit
.................................................................
21
.......................................................................
22
.....................................................................
23
Adjustable High Limit
Installation
Boiler Coding Card
Top of Control Unit
..........................................................
23
............................................................
24
...............................................................................
24
Opening the Control Unit
Appendix
Post-Installation Testing
5303 269 v1.3
Technical Data
3
Application Example 1
System with one direct-connected heating circuit without mixing valve
Boiler with Vitotronic 300
Domestic hot water tank
Vitotrol, Switching Module-V,
KM-BUS Expansion Module for the
connection of several KM-BUS
participants
Heating circuit without mixing valve
Power Pump Module
Low water cut-off device
Connectors
Outdoor temperature sensor
Boiler temperature sensor
DHW tank temperature sensor
KM-BUS participants
Extension for
two-stage/modulating burner*1
Heating circuit pump
Boiler circuit
DHW production pump
(accessory)
DHW recirculation pump
(field supplied where required)
Power supply
(120 VAC, 60 Hz)
Burner, single-stage*1
Burner, two-stage/modulating*1
Required Equipment
Description
Qty
Vitotronic 300
*1Included
4
in standard equipment
Z001 231
KM-BUS Expansion Module
Flue gas temperature sensor
5303 269 v1.3
Available System Accessories
Vitotrol remote control
Room temperature sensor
Switching Module-V for expanding
the range of control functions
1
Part No.
Application Example 2
System with one heating circuit with mixing valve
Boiler with Vitotronic 300
Domestic hot water tank
KM-BUS Expansion Module
(accessory) for the connection of
several KM-BUS participants
Heating circuit with mixing valve
Power Pump Module
Low water cut-off device
Mixing valve actuator accessory kit
Connectors
Outdoor temperature sensor
Supply temperature sensor
(accessory)*2
Boiler temperature sensor
DHW tank temperature sensor
Return water temperature sensor
(accessory)*2,3
KM-BUS participant
Extension for
two-stage/modulating burner*4
M1 Heating circuit pump*2
Mixing valve circuit
DHW production pump
(accessory)
DHW recirculation pump
(installed on site)
Power supply
(120 VAC, 60 Hz)
Burner, single-stage*4
Burner, two-stage/
modulating*4
Required Equipment
Qty
5303 269 v1.3
Description
Part No.
Vitotronic 300
1
Z001 231
Mixing valve actuator accessory kit (with mixing valve motor and supply temperature
sensor) for Viessmann mixing valve
1
7133 392 (old version)
or
7837 524 (new version)
Available System Accessories
Vitotrol remote control
Room temperature sensor
Return water temperature sensor
Switching Module-V for expanding
the range of control functions
KM-BUS Expansion Module
Flue gas temperature sensor
*1Supply check valve, only required if piping connection is made on one common boiler return.
*2To be connected in accessory kit.
*3In connection with underfloor heating when control measures supply and return water temperature.
*4Included in standard equipment.
5
Application Example 3
System with one direct-connected heating circuit without mixing valve and one heating circuit with mixing valve
Connectors
Outdoor temperature sensor
Supply temperature sensor
(accessory)*2
Boiler temperature sensor
DHW tank temperature sensor
Return water temperature sensor
(accessory)*2,3
KM-BUS participant
Extension for
two-stage/modulating burner*4
Required Equipment
Description
Boiler circuit pump
M1 Mixing valve circuit pump*2
DHW production pump
(accessory)
DHW recirculation pump
(field supplied where required)
Power supply
(120 VAC, 60 Hz)
Burner, single-stage*4
Burner, two-stage/modulating*4
Qty
Part No.
Vitotronic 300
1
Z001 231
Mixing valve actuator accessory kit (with mixing valve motor and supply temperature
sensor) for Viessmann mixing valve
1
7133 392 (old version)
or
7837 524 (new version)
Available System Accessories
Vitotrol remote control
Room temperature sensor
Return water temperature sensor
Switching Module-V for expanding
the range of control functions
KM-BUS Expansion Module
Flue gas temperature sensor
*1Supply check valve, only required if piping connection is made on one common boiler return.
*2To be connected in accessory kit.
*3In connection with underfloor heating when control measures supply and return water temperature.
*4Included in standard equipment.
6
5303 269 v1.3
Boiler with Vitotronic 300
Domestic hot water tank
Heating circuit without mixing
valve
KM-BUS Expansion Module
(accessory) for the connection of
several KM-BUS participants
Heating circuit with mixing valve
Mixing valve actuator accessory kit
Power Pump Module
Low water cut-off device
Heating system types
Application Example 4
System with two heating circuits with mixing valves
Boiler with Vitotronic 300
Domestic hot water tank
Heating circuit with mixing valve 1
Mixing valve actuator accessory kit
Heating circuit with mixing valve 2
Mixing valve actuator accessory kit
KM-BUS Expansion Module
(accessory) for the connection of
several KM-BUS participants
Power Pump Module
I Low water cut-off device
Connectors
Outdoor temperature sensor
Supply temperature sensor
(accessory)*2
Boiler temperature sensor
DHW tank temperature sensor
Return water temperature sensor
(accessory)*2,3
KM-BUS participant
Extension for
two-stage/modulating burner*4
M1
M2
Mixing valve circuit pump 1*2
Mixing valve circuit pump 2
DHW production pump
(accessory)
DHW recirculation pump
(field supplied where required)
Power supply
(120 VAC, 60 Hz)
Burner, single-stage*4
Burner, two-stage/
modulating*4
Required Equipment
Qty
5303 269 v1.3
Description
Part No.
Vitotronic 300
1
Z001 231
Mixing valve actuator accessory kit (with mixing valve motor and supply temperature
sensor) for Viessmann mixing valve
2
7133 392 (old version)
or
7837 524 (new version)
KM-BUS Expansion Module
1
7133 393
Available System Accessories
Vitotrol remote control
Room temperature sensor
Return water temperature sensor
Switching Module-V for expanding
the range of control functions
Flue gas temperature sensor
*1Supply check valve, only required if piping connection is made on one common boiler return.
*2To be connected in accessory kit.
*3In connection with underfloor heating when control measures supply and return water temperature.
*4Included in standard equipment.
7
Application Example 5
System with one direct-connected heating circuit without mixing valve and two heating circuits with mixing valves
2
Boiler with Vitotronic 300
Domestic hot water tank
Heating circuit with mixing valve 1
Mixing valve actuator accessory kit
Heating circuit with mixing valve 2
Mixing valve actuator accessory kit
KM-BUS Expansion Module
for the connection of several
KM-BUS participants
Heating circuit without mixing valve
Power Pump Module
Low water cut-off device
Connectors
Outdoor temperature sensor
Supply temperature sensor
(accessory)*2
Boiler temperature sensor
DHW tank temperature sensor
Return water temperature sensor
(accessory)*2,3
KM-BUS participant
Extension for
two-stage/modulating burner*4
M1
M2
Mixing valve circuit pump 1*2
Mixing valve circuit pump 2
Heating circuit pump
DHW production pump
(accessory)
DHW recirculation pump
(field supplied where required)
Power supply
(120 VAC, 60 Hz)
Burner, single-stage*4
Burner staging taken from other
devices
Required Equipment
Part No.
Vitotronic 300
1
Z001 231
Mixing valve actuator accessory kit (with mixing valve motor and supply temperature
sensor) for Viessmann mixing valve
2
7133 392 (old version)
or
7837 524 (new version)
KM-BUS Expansion Module
1
7133 393
Available System Accessories
Vitotrol remote control
Room temperature sensor
Return water temperature sensor
Switching Module-V for expanding
the range of control functions
Flue gas temperature sensor
*1Supply check valve, only required if piping connection is made on one common boiler return.
*2To be connected in accessory kit.
*3In connection with underfloor heating when control measures supply and return water temperature.
*4Included in standard equipment.
8
5303 269 v1.3
Qty
Description
Electrical connections
Overview
The illustration shows the bottom part of the control unit as viewed from rear.
120 VAC connectors
Interconnections Power Pump Module
Boiler circuit pump
DHW pump (accessory)
DHW recirculation pump
(to be field supplied where
required)
Power supply
Compiled fault indication
External equipment,
e.g. additional safety equipment
Burner connections
Burner connection
5303 269 v1.3
IMPORTANT
The 120 VAC connections are interface
connections to the power pump
module. Do not connect any external
equipment directly.
Low voltage connectors
Outdoor temperature sensor
Boiler temperature sensor
DHW tank temperature sensor 1
B DHW tank temperature sensor 2
Flue gas temperature sensor
(accessory)
Telephone connection (external
switching of the heating program)
KM-BUS (accessory)
e.g. for connection of Vitotrol
remote control
or
mixing valve actuator accessory
kit
or
Vitocom 100 communication unit
Extension for two-stage or
modulating burner (included in
standard equipment)
IMPORTANT
Take notice of shape and orientation of
low voltage connectors when inserting
into sockets at rear of control!
9
Electrical connections
Vitotronic Connections
1. Ensure that main power supply to the
Power Pump Module contains overcurrent
protection with a maximum rating of 15 A.
WARNING
This equipment must be grounded.
Ensure that the following wires are not
interchanged:
“L” and “N”
L: LINE
N: Neutral
G: Ground
50
156
50
Vitotronic boiler control (view from rear)
Connections for plug-in equipment
Connections for “hard-wired” equipment
120 VAC, 60 Hz, 1 Ph
Power supply
Provide 15 A overcurrent
protection and disconnect
means
Pump
Output
Space Htg.
120 VAC
Circulating pump
Heating circuit without
mixing valve
120 VAC, 1 Ph, 3 A max.
Circulating pump for
domestic hot water tank
120 VAC, 1 Ph, 3 A max.
Alarm
5
5
Power Pump Module (wall-mounted)
10
Alarm indicator
5303 269 v1.3
Circulating pump for
domestic
hot water
recirculation
120 VAC, 1 Ph, 3 A max.
Electrical connections
Vitotronic Connections
(continued)
Low water cut-off connections
1. Run 3-conductor cable between low
water cut-off device and Power Pump
Module.
2. Remove jumper on Power Pump
Module board (LWCO connection).
3. Connect wiring as shown in drawing
on the left.
3. Check for LWCO function after
installation is completed.
Remove jumper between
terminals L/P1 and P2 on
Power Pump Module board
when LWCO device is
installed.
Contact closes on water
5303 269 v1.3
Low water cut-off device (typical)
11
Application of Strain Relief
IMPORTANT
The strain relief clamps are supplied in
the accessories pack.
1.Remove breakouts as necessary.
2. Mount lower portion of strain relief
clamp.
3. Insert the cable in the bushing and
secure the wires to the plug-in
connector. Insert bushing in clamp and
connector in socket.
4. Fasten top portion of strain relief
clamp.
IMPORTANT
5303 269 v1.3
No additional strain relief as described
above is required for cables which
incorporate a molded strain relief clamp.
12
Electrical connections
Sensors
Outdoor temperature sensor
IMPORTANT
5.
1.
3.
4.
The outdoor temperature sensor should
be mounted 6.6 to 8.2 ft./2 to 2.5 m
above ground on the north or
northwest wall of the building and for
buildings with multiple floors, in the
upper part of the second floor.
The sensor must not be placed above
windows, doors, air vents or
immediately underneath a balcony or
drainage pipes.
The outdoor temperature sensor must
not be plastered or painted over. If
mounting on an unplastered wall, allow
room for plaster or remove sensor
before plastering wall.
1. Remove sensor housing.
2.
2. Secure wall-mount base to wall (cable
inlet opening to the bottom).
3. Pass cabling through openings in the
electrical connection section and the
supplied cable bushing.
IMPORTANT
Do not run cable next to line voltage
cables.
4. Connect cable wires to terminal.
Cable: max. 115 ft./35 m long, AWG
copper.
5. Mount outdoor temperature sensor
housing.
5303 269 v1.3
6. Connect the cable wires from the
outdoor temperature sensor to
(the
terminals ”1” and ”2” on plug
wires are interchangeable).
into socket ”1” and
7. Insert plug
apply strain relief to the cable.
Outdoor temperature sensor
13
Electrical connections
Sensors
(continued)
Boiler temperature sensor
The boiler temperature sensor is installed at the same time as the boiler insulation.
in socket ”3” (see
Insert connector
Vitotronic connections) and insert the
molded strain relief clamp.
Tank temperature sensor
Heating systems without domestic hot
water heating
Do not connect the DHW tank
temperature sensor to the control unit.
Heating systems with domestic hot water
heating
1.Install the DHW tank temperature
sensor.
Installation Instructions for
domestic hot water tank.
IMPORTANT
When installing the DHW tank
temperature sensor in tanks from other
manufacturers, ensure that sensor firmly
contacts the sensor well wall.
Ensure that the maximum permissible
domestic hot water temperature is not
exceeded. If necessary, an extra safety
high limit can be installed or an approved
type of tempering valve must be
installed.
in socket ”5”.
2. Insert connector
Insert molded strain relief clamp.
14
5303 269 v1.3
IMPORTANT
Electrical connections
Sensors
(continued)
Sensor connections
145
1
2
15
3
1
A
2
3
3
1
B
2
5
3
1
C
A Flue gas temperature sensor
(accessories)
B Boiler temperature sensor
C Tank temperature sensor
2
191
3
1
2
1
3
1
D
2
143
3
1
2
5b
3
1
2
3
E
D Outdoor temperature sensor
(cores may be interchanged)
Installation point for outdoor
temperature sensor
North or north-western wall, 2 to
2.5 m / 6.5 to 8 ft above ground
level; in case of multi-storey
buildings in the upper half of the
second floor
Not above windows, doors or
ventilation outlets
Not immediately below balconies
or gutters
Do not render over
E Tank temperature sensor 2
5303 269 v1.3
Connection
2-core cable with a maximum
length of 35 m/ 115 ft and a
cross-section of 1.5 mm2 (copper)
15
Electrical connections
Pumps
(accessory)
All circulation pumps can be
“hard-wired” to the terminal strip of
the Power Pump Module. Pre-wired
Viessmann circulation pumps can be
plugged into the respective Rast-5
terminals in the Power Pump Module.
Available pump connections
Boiler circuit pump
(heating circuit pumps for mixing
valve circuits 1 and 2 are
connected to the corresponding
actuator kit)
DHW production pump
DHW recirculation pump
For underfloor heating system only
An adjustable high limit must be
provided additionally. Install the fixed
high limit in the heating supply pipe
downstream from the mixing valve and
the heating circuit pump.
See installation instructions for
the limit thermostat
120 VAC pumps
WARNING
2. Connect the Rast-5 connector to the
respective plug-in terminal on the
Power Pump Module.
5303 269 v1.3
ONLY Viessmann pre-wired (plug-in)
circulating pumps must be used. If
pre-wired pumps are used do not
connect an additional pump to the
respective “hard-wired” terminals.
1. Insert supplied strain relief through
Power Pump Module knock-out and
fasten with nut.
16
Electrical connections
Burner
The burner cable is included in the standard boiler equipment.
Terminal codes
L1
Line via safety high limit
PE
Ground conductor to the
burner
N
Neutral conductor to the burner
T1, T2 Control circuit
S3
Connection for burner fault
B4
Connection for operating
hours counter
The Vitotronic 300 is prewired with the
Viessmann quick-connect plug-in
system.
1. Connect the
RAST-5 plug-in
connector to the main circuit
board of the control.
2. Connect 7-pole
plug to the
counter plug of the burner.
Or
if installing a vent system
(accessory), connect 7-pole plug to
counter plug of vent system.
Refer to technical instructions
of the burner and/or wall vent
system.
WARNING
Do not connect the 41-plug from the
boiler control directly to the burner if
a wall vent or flue damper / vent
damper is installed.
See technical instructions of the vent
system.
5303 269 v1.3
To control
(RAST-5 plug-in connector)
To burner or vent system
(
plug-in connector)
17
Electrical connections
Burner
(continued)
Electrical connection of two-stage or modulating burners
Terminal codes
T6, T7, Control circuit ”two-stage
T8
burner” or ”modulation
controller” (via two-point
controller with two-stage
operation; via three-point
controller with
modulating operation)
q
Signal direction:
Control unit → burner
p
Signal direction:
Burner → control unit
The connection is made via the
extension for 2-stage/modulating
burner.
See Installation Instructions for
boiler and extension for
2-stage/modulating burner.
4. Insert the connector 191 in the
corresponding terminal and apply
strain relief to the cable (see
“Application of Strain Relief”).
To control unit
To burner
2-stage or modulating module with
potential-free burner control output
Compiled Fault Indicator Alarm
Rated voltage:
Rated current:
120 VAC, 60 Hz
3 FLA
2. Connect wires to respective
terminals on the Power Pump
Module.
L
G
N
120 VAC Alarm Connection on
Power Pump Module
18
5303 269 v1.3
1. A visual and / or audible alarm
indicator can be connected.
External Switching of the Heating Program
Coding address ”91” enables the
external heating program changeover
to be applied to individual heating
circuits.
Use switching module V for separate
heating program changeovers for 3
heating circuits .
1. Connect the potential-free contact to
terminals ”1” and ”2” in connector
.
2. Insert connector
in terminal
”143” and apply strain relief to the
cable (see “Application of Strain
Relief”).
IMPORTANT
External switching of the heating
program (potential-free contact)
When the contact is closed, the
manually preselected program can be
changed for all heating circuits at the
same time.
See Vitotronic 300
Service Instructions
Changed heating program (with contact closed)
Manually pre-selected
heating program
(with contact open)
Code 2
9
Central heating
OFF/DHW OFF
d5 : 0
(factory
default)
<–> Permanent operation with reduced room temperature/DHW OFF
Central heating
OFF/DHW ON
d5 : 1
<–> Permanent operation with standard room temperature/DHW in
accordance with coding address ”64”
or
w
or
5303 269 v1.3
rw Central heating
ON/DHW ON
19
Adjustments
Fixed High Limit
The fixed high limit is factory preset to 230 ºF / 110 ºC.
Adjustment to 212 ºF / 100 ºC
1. Remove fuse.
2. Unclip the cover at the four snap-in
clips and remove.
Make: Etheco
Make: EGO
3. Pull the front panel behind cover
upwards and swing open to the rear.
4. Turn slotted screw on the rear of the
fixed high limit and set to 212 ºF /
100 ºC (once adjusted, the fixed
high limit cannot be reset to 230 ºF /
110 ºC).
5. Put front panel, cover and fuse back
in place.
6. Check box in the Vitotronic Service
Instructions to confirm that the
adjustment has been made.
CAUTION
Slotted screw
20
5303 269 v1.3
If adjusted to 212 ºF / 100 ºC do not
set the adjustable high limit above
167 ºF / 75 ºC.
Adjustments
Fixed High Limit (contd.)
Adjustment to 100 ºC (JUMO)
The fixed high limit is factory preset to 230 ºF / 110 ºC.
2.
1.
5.
6.
4.
3.
CAUTION
5303 269 v1.3
If adjusted to 212 ºF / 100 ºC do not
set the adjustable high limit above
167 ºF / 75 ºC.
21
Adjustments/Installation
Adjustable High Limit
The adjustable high limit is factory preset to 165 ºF / 75 ºC.
Do not set the adjustable high limit above 165 ºF / 75 ºC if the fixed high limit has
been set to 212 ºF / 100 ºC.
Adjustment to 189 ºF / 87 ºC
1. Using a suitable screwdriver, lever
out selector knob ” ” behind the
hinged cover.
2. Using a pair of pointed pliers, break
off the respective cams on the dial.
3. Install the selector knob ” ”, so that
the marking is between ”75” and
”90”.
Turn the selector knob ” ” fully
clockwise.
4. Check the box in the Vitotronic 300
Service Instructions to confirm that
the adjustment was made.
IMPORTANT
If the system is operated in conjunction
with a domestic hot water tank, ensure
that the maximum permissible
domestic hot water temperature is not
exceeded. If necessary, install an
approved safety device for this
purpose.
Boiler Coding Card
IMPORTANT
Only the boiler coding card which is
supplied with the standard boiler
equipment may be used. The coding
card is enclosed in the accessory pack
of the boiler.
5303 269 v1.3
1.Push the boiler coding card through
the recess in the cover and insert it
in plug-in location ”X7”.
22
Installation
Top of Control Unit
1.Install the rear control housing.
2. Position top of control unit on the
bottom and snap together.
3. Cut through sticker
, pull out hinged
support bar and pull down until the
lower section snaps into place.
4. Snap the end of the hinged support bar
in the holding clip at the bottom of the
control.
5. Insert the flat cable connector in
plug-in location ”X10” and lay cable
under holding clip.
6. Unlock hinged support bar by applying
and bring
pressure to linkage point
top of control unit down, snapping into
bottom of control unit.
Opening the Control Unit
1. Open the flip-down cover.
5303 269 v1.3
2. Using a suitable tool, e.g. a Viessmann
hexagon socket screw key, unlock the
top of the control and raise until
hinged support bar snaps into place.
23
Post-Installation Testing
Check list
Please check the following conditions
and correct any deficiencies:
Limit capillaries and sensors
correctly inserted into the sensor
wells?
Electrical connections performed
correctly?
Fuse F2 plugged in?
Outdoor temperature sensor
mounted correctly and cable
connected properly to outdoor
temperature sensor and connector
?
Fixed high limit and adjustable high
limit adjusted properly (if required)?
All connections properly connected?
Boiler coding card inserted?
Labelled appropriate fields on
programming unit according to heat
circuit allocation?
Start-up and adjustments
See Service Instructions
regarding start-up and settings.
Service document ring binder
1. File Installation, Operating and
Service Instructions in service
binder.
2. Service box (optional equipment)
now available for service binder.
Rated voltage: 120 VAC
Rated frequency:60 Hz
Rated current: 6 FLA
Power
consumption:
5W
Certification:
CSA certified
(in conjunction
with a Viessmann
boiler only)
24
Max. ambient
temperature
during
operation:
during storage
and transport:
32 to 104 ºF /
0 to 40 ºC
For use in living
area and boiler
rooms (normal
ambient conditions)
– 4 to 149 ºF /
–20 to 65 ºC
Relay outputs of Power Pump Module
120 VAC for:
heating circuit
pump :
3 FLA*1
DHW production
pump :
3 FLA*1
DHW recirculation
pump :
3 FLA*1
burner
connector :
2 FLA
Compiled
fault
3 FLA*1
indicator :
connector :
– two-stage
0.5 FLA
– modulating
0.05 FLA
*1Total:
max. 9 FLA
5303 269 v1.3
Technical Data
5303 269 v1.3
Appendix
25
Appendix
26
5303 269 v1.3
5303 269 v1.3
Appendix
27
Printed on environmentally friendly
(recycled and recyclable) paper.
Technical information subject to change without notice.
28
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
5303 269 v1.3
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