Viessmann Cascade control unit Manuale di servizio

Cascade control unit

Installation, operating

and service instructions

for heating engineers

Cascade control unit

Weather-compensated cascade control for up to four

gas fired wall-mounted boilers

5862Ă 7 ĂGBăăă3/2003 Please keep safe

General information

Safety instructions

Please follow these safety instructions closely to prevent accidents and

material losses.

Safety regulations

Installation, initial start-up, inspection,

maintenance and repairs must only

be carried out by a competent person

(heating engineer/installation

contractor).

Observe all current safety regulations

as defined by DIN, EN, DVGW, TRGI,

TRF and VDE or locally applicable

standards.

See also the safety instructions sheet

in the Vitotec technical documentation

folder.

Before working on the equipment/

heating system, isolate the mains

electrical supply (e.g. by removing a

separate mains fuse or by means of

a mains electrical isolator) and

safeguard against unauthorised

reconnection.

Close the main gas shut-off valve

and safeguard against unauthorised

reopening.

Electrical components provided by

the customer must be type-tested.

Work on gas equipment

This must only be carried out by an

approved contractor.

Please observe all commissioning

work specified for gas installations

acc. to TRGI or TRF and all local

regulations.

Please observe all commissioning

work specified for gas systems.

Repair work

It is not permitted to carry out repairs

on parts that fulfil a safety function.

Use only original Viessmann spare

parts, or equivalent parts that have

been approved by Viessmann.

Initial start-up

The initial start-up must be carried

out by the system installer or a

designated commissioning engineer;

all actual values should be recorded

in a commissioning/service report.

Instructing the system user

The system installer must hand the

operating instructions to the system

user and instruct him/her in the

operation of the system.

¨This symbol denotes important

information which must be

observed to prevent material

losses.

Product information

Cascade control unit, part no.Ă7170Ă857, weather-compensated cascade

control for multi-boiler systems with up to four gas fired wall-mounted

boilers and one distribution pump.

5862Ă 7 ĂGB

Contents

Index

Page

General information

Safety instructionsĂ 2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Product informationĂ 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation and connections

Installation conditionsĂ

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control unit installationĂ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical connectionsĂ 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Relieving cable strainĂ 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control

Operating controls and indicatorsĂ 8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating level selectionĂ 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Initial start-up/configurationĂ 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General details (general control units)Ă 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

System details (multi-boiler control unit)Ă 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Functions

Operating conditionsĂ 17

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Set room temperatureĂ 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Set flow temperatureĂ 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multi-boiler control unitĂ 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Distributor pumpĂ 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety and monitoring equipmentĂ 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting

General faultsĂ 32

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control panel faultsĂ 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Faults indicated in the "Faults" menuĂ 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sensor resistance tableĂ 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts listĂ35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SpecificationĂ36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5862Ă 7 ĂGB

Installation and connections

Installation conditions

HInstall the control unit at eye level

and as close to the connected

system components as possible.

HMax. ambient temperature

see "Specification".

HDo not install the control unit near

water sprays.

Control unit installation

1. Drill three holes in accordance

with the installation template

(inside the packaging).

2. Insert the upper screw far enough

for the control unit to be hooked

into place.

. Remove the cover from the

termination chamber.

4. Hook the control unit into position

and insert the lower screws.

5862Ă 7 ĂGB

Installation and connections

Electrical connections

Connection and wiring diagram

ACascade control unit

BMains connection 230ĂV~ă50ĂHz

CDistribution pump

DFault message (zero volt)

ESeparator (as delivered condition)

FViessmann 2ĆwireĂBUS for

connection to VitotronicĂ050,

VitotronicĂ050 accessory

GOutside temperature sensor

HFlow temperature sensor

KParty key

LExternal demand

MKM BUS interface

to VitodensĂ200

KĂ1 to KĂ Connection for

boilers 1 to

Sensors

Install sensors in their appropriate

positions and connect in accordance

with the diagram.

External switching contacts

Connect the external switching

contacts, the party key and the

"External demand" switching

contact (if installed) in accordance

with the diagram.

Boiler

Connect via the KM BUS interface in

accordance with the diagram.

5862Ă 7 ĂGB

1817

X5.

X5.3

FT A

X5.

X5.3

X5.

X5.3

X5.

161511312111098765321

1 ~

CGHKL

Installation and connections

Electrical connections (cont.)

VitotronicĂ050 heating circuit control

unit

Connect via Viessmann 2ĆwireĂBUS

in accordance with the diagram

(see page 5).

ACascade control unit

BVitotronicĂ050 with communications

module Viessmann 2ĆwireĂBUS,

part no.Ă71 3Ă710

CConnection cable Viessmann

2ĆwireĂBUS, part no.Ă717 Ă99 , for

connecting the cascade control

unit with the first VitotronicĂ050

DConnection cable Viessmann

2ĆwireĂBUS, part no.Ă781 Ă62 , for

connecting the first VitotronicĂ050

with the further VitotronicĂ050

Set the differential temperature

between the boiler water and the set

flow temperature at VitotronicĂ050.

Code "9F:8" (as delivered condition)

must be set.

If the outside temperature for

VitotronicĂ050 is to be adopted from

the cascade control unit, set code

"97:1".

Distribution pump

Connect acc. to diagram (see

pageĂ5).

Connection load capacity:

max. ĂAă230ĂV~.

Fault indication

HFault message contact (volt-free)

at mains voltage potential

230ĂV~, 1Ă(0.5)ĂA

Plug the separator in (see pageĂ5)

to the right of terminal blockĂ"17/18".

HFault message contact (volt-free) at

safety low voltage 2 ĂVć/~, 2ĂA

Plug the separator in (see pageĂ5)

to the left of terminal blockĂ"17/18".

¨Strip a minimum length of

insulation off the cable.

Connect in accordance with the

diagram (see pageĂ5).

Mains electrical connection

Connect the supplied mains cable in

accordance with the diagram (see

pageĂ5).

5862Ă 7 ĂGB

CDD

Installation and connections

Relieving cable strain

1. Fit a strain relief (supplied) to all

cables.

2. Fit the cover to the termination

chamber.

5862Ă 7 ĂGB

Control

Operating controls and indicators

ADisplay

BPush buttons

CSystem diagram

DFunction displays

5862Ă 7 ĂGB

A B DC

Control

Operating controls and indicators (cont.)

Push buttons

Subject to configuration and operating level, keysĂ , , and can be used

to display and/or amend the various details in the main and sub-menus. The

key function is subject to the respective menu item that is displayed when the

key is pressed.

Function in standard mode:

Scroll up the menu and/or increase the set value

Scroll down the menu and/or reduce the set value

Back to the previous menu and/or reinstate the previous set value

Menu selection and/or activation of the set value to change or confirm the

set value

Function during the configuration process (limited function):

Change the menu selection or increase the set value

Change the menu selection or reduce the set value

No function

Confirm the set value and scroll to the next configuration menu item.

Function display

"9":Hflashes if the control unit has been connected to the

mains supply but has not yet been configured,

Hilluminates permanently after configuration

"1 to " and " ": illuminate if the corresponding system component is

operational.

"U": illuminates in case of faults

5862Ă 7 ĂGB

Control

Operating level selection

The control unit has three operating levels.

Operating levelĂ1

Display of simple parameters, such as operating mode and software version.

Operating levelĂ2

Display of the most important operating details (e.g. actual and set flow

temperature, switching periods and settings, such as set room temperature,

set flow temperature) and modification of set values.

Operating levelĂ

System and device configuration.

Access to the operating levels

Press , "General control unit" will be

displayed.

When "Multi-boiler control unit" is displayed,

select "General control unit" with and confirm

with .

Select "Operating level" with and confirm

with ; operating levelĂ1, 2 or 3 will then be

displayed.

Press , figureĂ"1"or "2" will then flash.

Enter the following access code for the required

operating level:

for operating levelĂ2

for operating levelĂ3

Press , "Operating level" is then displayed.

This confirms the selection of the required

operating level.

Press to return to "General control unit".

Please note:

The control unit automatically reverts to operating levelĂ , if no key is pressed

within an hour.

5862Ă 7 ĂGB

Control unit 001ĆA

General

Operating level

Operating level 1

[ ]

Operating level

Control unit 001ĆA

General

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