Viessmann Divicon Preassembled Mixing Valve Station Operating instructions
- Type
- Operating instructions
Assembly, Installation, and
Operating Instructions
Divicon - preassembled mixing valve station
for use with Vitotronic 200/300
for boiler series:
HVitola 200
HVitorond 200 (sizes VR2-18 to VR2-33 only)
HVitogas 100, GS1
HVitogas 100, GS10
Divicon
Read and save these instructions
for future reference.
IMPORTANT
5167 546 v2.3 11/2003
Please file in Service Binder
Safety, Installation and Warranty Requirements
2
Safety, Installation and Warranty Requirements
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/orloss
of life. Ensure all requirements below are understood and fulfilled (including detailed information found in manual subsections).
HLicensed 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”.
HProduct 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
Regulatory and
Installation Requirements”.
HAdvice 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.
HWarranty
Information contained in
this and related product
documentation must be
read and followed. Failure
to do so renders warranty
null and void.
5167 546 v2.3
Contents
3
Page
Safety Important Regulatory and Installation Requirements 4....
General Information About these Installation Instructions 4...................................
Product Information 5....................................................................
Assembly and Installation Assembly and Installation 6........................................................
Right- and left-hand mount assembly 6.................................
Changing the Divicon configuration 6.....................................
Mixing valve motor rotation 7.....................................................
Assembly and connection to the boiler 8..............................
Pressure by-pass valve connection 8......................................
Pressure by-pass operation 9......................................................
Insulating Shell Attachment 10.....................................................
Boiler Piping 11.....................................................................................
Vitola 200 11.......................................................................................
Vitorond 200 (VR2-18 to VR2-33) 12......................................
Vitogas 100, GS1 and GS10 13................................................
Piping Accessories 14.......................................................................
Initial Fill of Heating System 14...................................................
Divicon Wiring 15...............................................................................
Routing of wires 15...........................................................................
Mounting of power/pump control module 15.........................
Wiring prefab plug-in system for Vitotronic 200 16............
Wiring prefab plug-in system for Vitotronic 300 17............
#2 Strap-on sensor 18.......................................................................
Divicon Pumps Divicon Circulating Pump 19.........................................................
Additional Pre-wired Pump Selection 19..................................
Operation and Service Preparation and Start-up 20...........................................................
Operation and Service 20...............................................................
5167 546 v2.3
Safety/General Information
4
Important Regulatory and Installation Requirements
HInstallation
Please carefully read this manual prior
to attempting installation. Any warranty
is null and void if these instructions are
not followed.
Observe all local rules and regulations
as they apply for this type of device.
We offer frequent installation and
service seminars to familiarize our
partners with our products. Please
inquire.
HWorkingontheequipment
The installation, adjustment, service,
and maintenance of this device 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 the Divicon preassembled
mixing valve station.
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 in both instances to avoid
accidental activation of power during
service work.
About these Installation Instructions
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 in
column three.
This symbol indicates that other
instructions must be referenced.
5167 546 v2.35167 546 v2.35167 546 v2.3
Indicates an imminently hazardous
situation which, if not avoided, could
result in death, serious injury or
substantial product/property damage.
WARNING
Indicates an imminently hazardous
situation which, if not avoided, may
result in minor injury or
product/property damage.
CAUTION
IMPORTANT
General Information
5
Product Information
HProduct delivery
The Divicon preassembled mixing valve
station is delivered fully assembled. The
default configuration is for a right-hand
mount on the boiler.
HTechnical data
Depth 11½”/29 cm
.....................................
Width 12¾”/32 cm.....................................
Height 27”/69 cm........................................
Weight 40 lbs/18 kg....................................
Dimensions are overall dimensions and
include system supply/return pipe
extensions, boiler supply/return
connection, circuit pump, and pressure
actuated by-pass valve.
Max. working pressure 60 psig/4 bar
...
Max. temperature 230°F/110°C.............
HDivicon product compatibility
The Divicon, complete with factory
pre-wiring including Viessmann
accessory pumps, is certified as an
accessory for Viessmann hot water
heating boilers.
This device may only be installed on
any of the following boilers:
HVitola 200
HVitorond 200
HVitogas 100, GS1
HVitogas 100, GS10
Do not attempt to install the Divicon
mixing valve station on any other
boilers (other than the ones listed
above)!
HTechnical literature
Literature applicable to installation of
the Divicon:
- Assembly, Installation and
Operating Instructions
- Parts List
Additional literature applicable to
installation of the complete system
(Viessmann System Technology):
- Technical literature of boiler
- Technical literature of Vitotronic boiler
control
- Strap-on Sensor Installation Instructions
- Installation Instructions for Mixing
Valve Actuator Accessory Kit
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.
5167 546 v2.3
Exposing Divicon to pressures and
temperatures greater than those listed
above, renders warranty null and void.
WARNING
IMPORTANT
IMPORTANT
Assembly and Installation
6
Assembly and Installation
Right- and left-hand mount assembly
The Divicon preassembled mixing valve
station is factory-shipped for either a
right-hand mount or left-hand mount
configuration.
If you have the required configuration,
continue with section entitled “Assembly
and connection to the boiler” on page 8.
Should you have the wrong configuration,
the Divicon mixing valve station can be
reversed in the field.
Changing the Divicon configuration
1. Unscrew and remove pump cover ,
mixing valve cover , and mixing valve
insert .
2. Set “O”-rings and into pump
cover . Place “O”-ring into mixing
valve cover . Fasten both covers on
opposite side.
3. Loosen mixing valve lever and label
plate , turn both over and reassemble.
4. Reinstall mixing valve insert ,with
notch in the position diagrammed in
Fig. 1 detail.
5. Mount the mixing valve lever in an
identical orientation to notch and in
the setting “10”.
6. Remove pressure by-pass valve
(illustrated on page 9).
7. Turn ball valves and 180ºby
loosening both unions.
8. Reinstall pressure by-pass valve on
opposite side.
9. Refer to page 10 for instructions of how
to attach the insulating shell.
5167 546 v2.3
Fig. 1
Reassembly for left-hand mount configuration
Assembly and Installation
7
Assembly and Installation (continued)
Mixing valve motor rotation
Mixing valve motor rotation
Turn direction of mixing valve motor
(actuator) can be reversed from default
factory setting if a different configuration of
the Divicon unit is necessary. Proceed as
follows:
1. Deactivate Vitotronic control and main
power to heating system.
2. Remove cover of mixing valve motor (a).
3. For Divicon with Vitotronic 200,unplug
the plug-in connector of the mixing valve
motor and rotate 180º (b). Insert plug-in
connector into terminal again (Fig. 2).
For Divicon with Vitotronic 300, switch
internal switch of mixing valve controller
from factory default position I to II
(Fig. 3).
4. Reinstall cover.
5. Reactivate Vitotronic control and main
power to heating system.
6. Verify correct rotation of mixing valve
motor using the diagnostic test procedure
outlined in separate Vitotronic control
Installation Instructions.
Power supply switch
Rotational direction switch
5167 546 v2.3
Fig. 2
Alteration of rotational direction of mixing valve motor, Vitotronic 200
a
b
Fig. 3
Alteration of rotational direction of mixing valve motor, Vitotronic 300
Assembly and Installation
8
Assembly and Installation (continued)
Assembly and connection to the boiler
Ball valves have Teflon seals. Always
use a pipe wrench on the hexagon
ends of the ball valve to counteract the
tightening force when attaching
fittings.
Do not solder or weld any fitting
already attached to the ball valves.
Inspect all gasketed fittings for defects
and clean surfaces.
CAUTION
The heating system supply is marked with
“YV” and the return is marked with “BR”.
1. The boiler connection fittings
complete with isolation valves and
gaskets of the supply and return must
be fastened, aligned and tightened.
2. Attach the Divicon mixing valve station
with gaskets and lock nuts to the
boiler supply and return connection.
A 90º elbow kit or a tee kit may be
installed between the boiler and the
Divicon mixing valve station in certain
situations. See page 14.
3. Align the Divicon mixing valve station
and tighten all locking nuts.
4. Mount the pump with “O”-ring on
the station using the M 6 screws. The
pump adaptor housing is equipped with a
plastic insert. Align both openings to fit
properly into the cast openings .
Tighten the 4 bolts uniformly and in a
cross-wise fashion.
Pressure by-pass valve connection
Remove caps and connect the pressure
by-pass valve.
Should the valve be installed and system is
already filled, the system does not need to
be drained. Close the 4 isolation valves and
carefully remove caps - proceed with
valve installation.
IMPORTANT
If the pressure by-pass valve is shipped
separately, the copper pipe may need to be
cut to proper length.
5167 546 v2.3
Fig. 4
Assembly of Divicon mixing valve station
Fig. 5
Connection of the pressure by-pass valve
Assembly and Installation
9
Assembly and Installation (continued)
Pressure by-pass operation
Pressure by-pass valve
Some advantages include:
HRegulation of the pressure between
supply and return in a closed-loop
heating system controlled by
radiator/zone valves;
HReduction of noise caused by restricted
flow in the system;
HReduction of wear and tear on the
circulation pump by controlling
differential pressure.
Installation
For proper initial settings:
1.Close all radiator/zone valves or mixing
valves.
2.Loosen hex setting nut.
3.Turning the pressure by-pass setting
dial to the right raises the set pressure;
turningitleftlowersthesetpressure.
4.Turn pressure by-pass setting dial to
the required pressure setting.
5.Tighten hex setting nut to lock setting
dial; open all radiator/zone valves or
mixing valves.
Technical Data
Max. operating pressure 145 psig/
............
10 bar
Max. operating temperature 248ºF/
..........
120ºC
Differential pressure setting range .............
1.45 to 5.8 psig/
0.1 to 0.4 bar
Default factory setting 2.9 psig/0.2 bar
..
Components Material
housing, top and inside brass
.......................
operator and O-rings EPDM..........................
spring stainless steel......................................
angle union brass.............................................
coupling nuts brass.........................................
compression fittings brass............................
connecting pipe copper.................................
Service
Start-up
HEnsure proper setting of pressure
by-pass valve and make adjustments as
needed.
HEnsure circulation pump is activated.
If the radiator/zone valves produce
noises:
HEnsure proper setting of pressure
by-pass valve and make adjustments as
needed.
HPerform a functional check.
5167 546 v2.3
Fig. 6
Pressure by-pass explosion diagram
Fig. 7
Top view of Divicon with
pressure b
y
-pass
v
al
v
ea
t
t
ache
d
Fig. 8
Pressure by-pass valve
¾” /
19 mm
¾” /
19 mm
1½”/
40 mm
112 mm
4½”/
Assembly and Installation
10
Insulating Shell Attachment
IMPORTANT
When Divicon is shipped fully assembled
including the insulation, the complete
insulation must be removed and all unions
and threaded connections must be verified
for tightness with water pressure not
exceeding 30 psig/2 bar with water
temperature at room temperature.
1. Snap-lock insulation shells and
over boiler connection fittings.
2. Depending on the mounting configuration
of the station, the indicated markings
must be carefully cut out of the insulation
shells and using a utility knife.
3. Depending on the pump model, the right
or left segment must be cut out using
a utility knife.
4. Where a pressure by-pass valve has been
installed:
The upper piece of the rear insulation shell
must be trimmed based on marking
and a circular cut made for the connections
of the pressure by-pass valve.
5. Install insulation shells and . Front
shell should glide over pump (feed power
connection cable for pump through front
shell first), and both shells should
snap-lock together.
6. Mount red handle on the supply valve,
marked “YV”.
7. Mount blue handle on the return
valve, marked “BR”.
8. Attach mixing valve motor.
Never manually force the mixing valve
motor drive shaft to move. This will
damage the internal gears and motor
drive.
CAUTION
5167 546 v2.3
Fig. 9
Assembly of the insulation shell
Assembly and Installation
11
Boiler Piping
Vitola 200 - Divicon quick-connect piping for low temperature applications
The Divicon is designed to
“quick-connect” to the Vitola 200 (VB2
series) hot water heating boiler. As such,
no special fittings or piping need to be
field supplied. Please note that on the
Vitola 200 boiler, the Divicon may be
left- or right-hand mounted. See
“Important” note below.
The Divicon itself is shown in left-hand
mount configuration in diagram below.
Fig. 10
Piping for Vitola 200 boilers (left-hand mount shown)
Left view Rear view
The Divicon may be mounted facing
forward using a Viessmann 90°elbow
kit. Kit sold separately. See page 14.
5167 546 v2.3
IMPORTANT
When connecting the Divicon, do not
use the boiler NPT adaptors that are
supplied with the Vitola 200. These
can damage the Divicon gasket
material, resulting in leaks.
CAUTION
Assembly and Installation
12
Boiler Piping
Vitorond 200 - Divicon quick-connect piping for low temperature applications
The Divicon is designed to
“quick-connect” to the Vitorond 200
boiler (up to VR2-33). A Divicon adaptor
is required to connect the Divicon station
to the Vitorond boiler.
No other product specific fittings or
piping need to be field supplied.
Refer to Installation
Instructions of Divicon
Adaptor.
5167 546 v2.3
Assembly and Installation
Fig. 12
Piping for Vitogas 100, GS10 boiler (right-hand mount shown)
13
Boiler Piping
Vitogas 100, GS1 - Divicon quick-connect piping for low temperature applications
The Divicon is designed to
“quick-connect” to the Vitogas 100, GS1
boiler.
No other product specific fittings or
piping need to be field supplied.
A supply and return tee kit is required for
additional high temperature circuits
and/or a DHW heating circuit. See p. 14.
Vitogas 100, GS10 - Divicon remote connection for low temperature applications
The Divicon cannot be mounted directly
onto the Vitogas 100, GS10 boiler.
Use a hex bushing (see following page) to
mount Divicon remotely.
5167 546 v2.3
Fig. 11
Piping for Vitogas 100, GS1 boiler (right-hand mount shown)
IMPORTANT
IMPORTANT
Assembly and InstallationAssembly and Installation
14
Piping Accessories
For a 90° offset mount of the Divicon,
Viessmann offers insulated 90° elbows.
When the Divicon is used on a Vitogas 100,
GS1 boiler, a supply/return tee kit is
required for additional high temperature
and/or DHW heating circuits.
Use a special hex bushing (1½” x 1¼”) to
mount the Divicon mixing valve station
remotely on a Vitogas 100, GS10 boiler.
Initial Fill of the Heating System
Before filling the hot water heating system,
turn screw so the slot is aligned
vertically with the arrow above it .This
places the spring-loaded valve in the open
position and allows any trapped air to
escape. When system is filled and ready to
operate, turn set screw with slot back into
horizontal position for proper operation.
The supply line must contain the ball valve
with integrated flow check valve.
5167 546 v2.3
Fig. 13
Viessmann 90° insulated elbow kit
Fig. 14
Viessmann supply and return tee kit
For direct connection of additional high temperature
space heating or DHW circuits into the supply
and return of the Vitogas 100, GS1 boiler.
Fig. 15
Special hex bushing for remote mounting of Divicon
mixing valve station on a Vitogas 100, GS10 boiler.
5167 546 v2.3
Fig. 16
Flow check valve
IMPORTANT
Assembly and Installation
15
Divicon Wiring
Routing of wires
All prefabricated wiring may be attached
to water pipes with cable ties, provided
piping is insulated with at least 1”/25
mm thick premolded mineral wool or
closed cell foam insulation.
If water piping is not insulated, a
minimum of 2”/50 mm air space must be
maintained between uninsulated pipe and
all wiring.
A minimum air space of 6”/150 mm must
be maintained between wiring, vent pipe,
and the chimney at all times. A minimum
of 2”/50 mm air space must be
maintained to all outside surfaces of a
draft hood.
All wiring shall be routed in such a
fashion that all stated clearances are
maintained to any other hot surfaces or
appliances.
All wiring shall be secured with the strain
relief cable clamps shipped with the
pump control module, at a distance no
farther than 12”/300 mm away from
pre-wired plug-in control module (see Fig.
17).
Provide a dedicated wall receptacle 115
VAC to plug-in power/pump control
module with separate on/off switch for
easy power interruption when system
service is required (see Figs. 17 and 18).
No factory wiring must be extended in
the field.
Mounting of power/pump control module
Mount only on ceiling or wall of boiler
room. When installed on wall, clearance
to floor should be a minimum of 4 ft/122
cm. Be advised that the cable from the
Vitotronic to the power/pump control
module is 20 ft/6 m long.
Power/pump control module must be
mounted with at least 2 screws, of
proper size and strength, to support the
weight of the unit. The wall or ceiling
must have adequate backing. Do not
mount module with nails. Do not mount
module to any surface exceeding room
temperature. Ensure minimum clearance
of 1 ft/300 mm from module to any vent
pipe or draft hood surface. Ensure proper
service access.
5167 546 v2.3
IMPORTANT
Do not mount power/pump control
module on boiler or DHW tank jacket.
CAUTION
Assembly and Installation
16
Divicon Wiring
Wiring prefab plug-in system for Vitotronic 200
IMPORTANT
All wires must be strain-relieved. For this
purpose every Power Pump Module wire is
supplied with a loosely mounted box
connector and a metal nut. Break the
breakouts at the back of the power pump
module and insert the box connector.
Tighten using the metal nut.
IMPORTANT
If low water cut-off device is used, remove
factory installed jumper from terminals L,
P1 and P2.
Connectors
20-1 Heating circuit pump
20-2 Heating circuit pump
Mixing valve circuit
DHW production pump
(accessory)
Power supply
(120 VAC, 60 Hz)
Mixing valve motor
(accessory)
IMPORTANT
Pre-wired high-temperature pump 20-1 and
DHW pump 21 may be purchased
separately from Viessmann. Plugs are not
sold separately. See page 20 for pre-wired
pump sizes available.
Refer to Installation
Instructions of Vitotronic 200
5167 546 v2.3
Fig. 17
Wiring of Power Pump Module
for Vitotronic 200 with Vitola 200 and
Vitocell-H 300 tank.
System fill
High temp.
system A
Domestic
hot
water tank
Vitola 200
Low
temp.
system
B
Pump
by-
pass
Vitotronic
200
LWCO
20-1
20-2
LWCO
Assembly and Installation
17
Divicon Wiring
Wiring prefab plug-in system for Vitotronic 300
IMPORTANT
All wires must be strain-relieved. For this
purpose every Power Pump Module wire is
supplied with a loosely mounted box
connector and a metal nut. Break the
breakouts at the back of the power pump
module and insert the box connector.
Tighten using the metal nut.
IMPORTANT
If low water cut-off device is used, remove
factory installed jumper from terminals L,
P1 and P2.
Connectors
Heating circuit pump
Boiler circuit
DHW production pump
(accessory)
Power supply
(120 VAC, 60 Hz)
KM-BUS
IMPORTANT
Pre-wired high-temperature pump 20-1 and
DHW pump 21 may be purchased
separately from Viessmann. Plugs are not
sold separately. See page 20 for pre-wired
pump sizes available.
Refer to Installation
Instructions of Vitotronic 300
5167 546 v2.3
Fig. 18
Wiring of Power Pump Module
for Vitotronic 300 with Vitola 200 and
Vitocell-H 300 tank.
High temp.
system A
Pump
by-
pass
LWCO
Vitola 200
Domestic
hot
water tank
System fill
Low
temp.
system
B
Vitotronic
300
LWCO
Assembly and Installation
18
Divicon Wiring
#2 Strap-on sensor
The 2strap-on sensor is utilized as a
supply sensor.
When used in conjunction with the Divicon
preassembled mixing valve station, it is
mounted on the supply pipe extension at
the factory. The 2strap-on sensor is
always situated after the heating pump
(note flow direction). Place strap-on sensor
1 to 1.5 m after the mixing valve.
Ensure the sensor is never covered with
insulation.
For Vitotronic 200 control, connect 2
strap-on sensor plug to counter connection
in the back of the Vitotronic 200 control.
For Vitotronic 300 control, connect 2
strap-on sensor plug to counter connection
on the Vitotronic 300 mixing valve motor.
For further information, please refer to
separate instructions of strap-on sensor and
Vitotronic control.
5167 546 v2.3
F
ig. 19
V
iessmann #2 strap-on sensor
IMPORTANT
Fig. 20
Supply water temperature versus resistance
Allowable ambient temperature during
operation, storage and shipment:
-40 to+70 ºC/-40 to+158 ºF
IMPORTANT
Divicon Pumps
19
Divicon Circulating Pump
The Divicon is factory equipped with a
Grundfos circulating pump, model
VIUPS-62, 115 V, 60Hz with 3-speed
selector switch.
IMPORTANT
The pump head cannot be exchanged with
any other model. This is a Viessmann
specific pump for the Divicon station.
Replacement parts for the circulating pump
must be ordered as per the Divicon Parts
List from Viessmann.
Additional Pre-wired Pump Selection
In addition to the Divicon station pump,
the following pre-wired circulating pumps
in any configuration may be selected to
complete the system.
The power/pump control module for the
Vitotronic 200/300 controls has a plug-in
connection strip for pre-wired circulating
pumps, as well as a screwed-in
connection strip for field supplied pumps.
Power/Pump module connection plugs are
not sold separately.
Please see following page for detailed
pre-wired pump information.
5167 546 v2.3
Power consumption curve for VIUPS-62
Circulating pump curve for VIUPS-62
5167 546 v2.3
Divicon Pumps
Start-up/Operation and Service
Viessmann Manufacturing Company Inc.
750 McMurray Road
Waterloo, Ontario •N2V 2G5 •Canada
Tel. (519) 885-6300 •Fax (519) 885-0887
www.viessmann.ca •[email protected]
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 •[email protected]
Divicon Pumps
Start-up/Operation and Service
Divicon Pumps
Start-up/Operation and Service
20
Additional Pre-wired Pump Selection (continued)
High temperature heating circuit
For the high temperature heating circuit,
Viessmann offers the following (optional)
pre-wired Grundfos circulation pumps.
Select ONE of the following (if
applicable):
Model Viessmann
Order No.
UP 15-42F (Brute II)
UPS 15-42F (3-speed)
UP 26-64F
UP 26-96F
UP 26-99F
UP 43-75F
7133 394
7133 395
7133 396
7133 397
7133 398
7133 399
All pumps 115 VAC.
Domestic hot water heating circuit
For the domestic hot water heating
circuit, any of the (optional) pre-wired
Grundfos circulation pumps listed to the
left may be utilized.
Select ONE circulation pump (if
applicable).
Auxiliary pump switching module
(accessory)
For operation of a high-temperature
pump, or a DHW production pump larger
than those listed to the left, an auxiliary
pump switching module is available. Field
supplied 120/230 pumps up to 10A can
be connected to this module and plugged
into the Divicon pump module.
Circulating pump piping
It is recommended that each pre-wired
high-temperature heating circuit pump
and/or domestic hot water heating pump
assembly listed be installed with one flow
check valve and two 1¼” ball valves.
Fig. 21
Circulating pump piping
Preparation and Start-up
Before reattachment of insulation shell
and pressure test, ensure that all ball
valves are open.
Before any of the closed-cell foam
insulation shell is reattached, a water
pressure test as previously described on
page 10 must be performed and tightness
verified including all unions.
Before reattachment of insulation shell
adjust the proper pump speed (1, 2, 3).
On initial start-up, verify pump operation,
proper mixing valve operation (open and
closed position), correct mixing valve
motor (actuator) rotation, and
functionality of temperature gages.
This can be done using the relay test
function of the Vitotronic 200 or 300
control.
Vitotronic 200 or 300
Service Instructions
Operation and Service
Before any attempt is made to work on
any component of the system, turn main
power supply off including fuel supply to
the unit.
The functions (pump and mixing valve) of
the Divicon station are controlled by the
Vitotronic digital indoor/outdoor control.
For heating curve adjustment for the
mixing valve, please see Vitotronic
Installation Instructions.
In case of a defective mixing valve
motor, the motor drive catch can be
manually unclipped from the mixing valve
lever and operated (set) by hand for
temporary operation - never set manually
for full discharge (Position No. 10) of hot
water into low temperature heating
system. Normal setting should not
exceed Position No. 6 on mixing valve
scale. Call a heating contractor
immediately to replace mixing valve
motor and verify settings.
During the annual service inspection, the
insulation shell of the Divicon station
should be loosened (or removed) and all
connections within checked for tightness.
The condition of all factory wiring and
quick-connect plugs should be checked.
Ensure all male and female plugs are
snapped together properly.
5167 546 v2.3 Printed on environmentally friendly
(recycled and recyclable) paper.
Technical information subject to change without notice.
5167 546 v2.35167 546 v2.3
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Viessmann Divicon Preassembled Mixing Valve Station Operating instructions
- Type
- Operating instructions
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