Viessmann VITOTRONIC 300 Guida rapida

VITOTRONIC 300

Installation and

Service Instructions

Vitotronic 300, Model GW2

Outdoor-reset logic digital boiler and

heating circuit control unit

Certified as a component part

of Viessmann boilers only

Read and save these instructions

for future reference.

IMPORTANT

for use y heating contractor

5285 9 1 v1.6 12/2012

Please file in Service Binder

General information

Safety, Installation and Warranty Requirements

Please ensure that this manual is read and understood efore 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).

Licensed 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.”

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

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

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!

Helpful hints for installation,

operation or maintenance which

pertain to the product.

5285 9 1 v.1.6

Indicates an imminently hazardous

situation which, if not avoided, will

result in death, serious injury or

substantial product / property damage.

DANGER

Indicates an imminently hazardous

situation which, if not avoided, could

result in substantial product/property

damage, serious injury or loss of life.

WARNING

Indicates an imminently hazardous

situation which, if not avoided, may

result in minor injury or product /

property damage.

WARNING

IMPORTANT

General information

Product Information

Vitotronic 300, Model GW2

For installation in or mounting on

Viessmann boilers only.

Applicable to the following control

units

Order No. 713 555, 71 3 156, 7511 362 from

Serial No. 71 3 000



Order No. 713 555, 71 3 156, 7511 362 from

Serial No. 7187 101



Order No. 713 555, 71 3 156, 7511 362 from

Serial No. 72 8 2 8



5285 9 1 v.1.6

Index

Page

General information

Safety Requirements 2

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

Product information 3

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

Heating system types

System types for modulating oilers 6

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

System types for condensing oilers 12

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

Installation

Overview of electrical connections 18

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

Routing and strain relief of ca les 21

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

Inserting the oiler coding card 22

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

Adjustment of the fixed high limit 23

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

Adjustment of the adjusta le high limit 2

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

Connection of the outdoor temperature sensor 25

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

Connection of the oiler temperature sensor

and other sensors 26

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

Connection of the pumps 30

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

Connection of oiler return mixing-valve or

modulating valve actuator 32

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

Making space for accessory adaptors on the DIN rail

(CM2 only) 3

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

Connections to plug aBÖ 35

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

Compiled failure alarm indicator 36

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

Connection of external equipment to plug aVD 38

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

Connection of external equipment to plug aVH 39

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

Connection of external controls 0

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

Connection of com ustion air device 5

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

Connection of low water cut-off device 9

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

Burner connection, urner control wiring 51

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

Power supply connection, oiler control 55

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

Mounting the front part of the control unit 57

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

Opening the control unit 59

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

Start-up

Procedure (overview) 63

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

Steps 6

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

5285 9 1 v.1.6

Index

Page

Scanning service information

Overview of service levels 72

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

Temperatures, oiler coding cards and scanning 73

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

Scanning operating status information 77

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

Scanning and resetting the ”Service” display 78

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

Trou leshooting

Trou leshooting steps 79

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

Diagnosis 80

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

Functional description

Boiler temperature control 86

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

Heating circuit control 87

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

DHW tank temperature control 90

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

Additional information

Overview 92

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

Technical data 93

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

System components 9

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

Coding 1 11

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

Coding 2 116

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

Wiring diagram 135

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

5285 9 1 v.1.6

Heating system types

Heating system types for modulating oilers

System type 1 – Single- oiler system with shunt pump for raising the return temperature

in conjunction with

Vitorond 200, VD2

ABoiler with Vitotronic 300

BDomestic hot water tank

CHeating circuit with mixing valve

plugs

!Outdoor temperature sensor

?M2 Supply temperature sensor,

mixing valve circuit 2

?M3 Supply temperature sensor,

mixing valve circuit 3

§Boiler temperature sensor

%DHW tank temperature sensor

aJATemperature sensor T1

aJBTemperature sensor T2

sÖ A1 Close mixing valves with

external heating circuit controls

sÖ M2 Heating circuit pump, mixing

valve circuit 2

sÖ M3 Heating circuit pump, mixing

valve circuit 3

sA DHW pump

sK DHW re-circulation pump

sL Shunt pump

fÖ Power supply connection,

120 VAC

fA Burner (1st stage)

gS M2 Mixing valve motor, mixing

valve circuit 2

gS M3 Mixing valve motor, mixing

valve circuit 3

lÖ Burner (2nd stage/modulating)

aVD Connection of external

equipment (see page 38)

aVH Connection of external

equipment (see page 39)

n the Vitorond the boiler supply and return are at the rear of the boiler.

5285 9 1 v.1.6

A1 M2 M3

C C

1 6

1 3

17A

17B

Heating system types

Heating system types for modulating oilers

(continued)

Possi le applications

Heating systems with manifold

arranged close to the boiler. The boiler

water flow is required to be reduced.

Please note:

This circuit diagram represents a

recommendation only. It is the

responsibility of the customer and/or

the heating contractor to check that

this recommendation is complete and

fully functional. Three-phase equipment

must be connected via additional

power contactors.

When the return temperature falls

below the required minimum value,

the temperature sensor T2 switches

on the shunt pump. If the minimum

return temperature is not reached

despite raising the return temperature,

the flow must be reduced by at least

50% via the temperature sensor T1.

The shunt pump must be sized so that

bypassed water accounts for approx.

30% of the total flow rate of the

boiler.

Temperature sensor T1

Wiring of the temperature sensor

T1 in heating systems with heating

circuit control units which are not

connected via the LON BUS to the

boiler control unit.

Coding required: ” C : 2” – use

plug sÖ for closing the mixing

valves of the heating circuits

connected downstream.

sÖ A1 Close mixing valves

AContactor relay, field supplied

BHeating circuit controls

connected downstream

Switch contact closed: signal

for ”close mixing valve”.

Availa le system accessories

Vitotrol remote control

Flue gas temperature sensor

Coding of

system type

Change required Automatic change

00: 1 If no system circuit A1 is connected, set

coding ”00: 3”, ”00: ”, ”00: 7” or ”00: 8”

(see page 101)

The system type is recognized automatically

when the sensors are connected

02: 1 Set coding ”02: 2” for operation with

modulating burner

––

03: 0 Set coding ”03: 1” for oil-fired operation

(re-setting is not possible) ––

A: 0 –– Connection of the temperature sensor T1 at

plug aJA;

Coding ” A: 1” is set automatically

b: 0 –– Connection of the temperature sensor T2 at

plug aJB;

Coding ” b: 1” is set automatically

5285 9 1 v.1.6

Heating system types

Circuit Diagram 1

Single- oiler system with Therm-Control and three-way mixing valve

in conjunction with Vitorond 200, VD2A

AHeating circuit with mixing valves

BDHW tank

Plug

!Outdoor temperature sensor

?M2 Flow temperature sensor,

mixing valve

?M3 Flow temperature sensor,

mixing valve

§Boiler water temperature

sensor

%DHW tank temperature sensor

aJATherm-Control temperature

sensor

sÖM2 Heating circuit pump, mixing

valve

sÖM3 Heating circuit pump, mixing

valve

sÖA1 Closing the mixing valves with

external heating circuit control

units

sA DHW primary pump

sK DHW circulation pump

fÖ Power supply, 120 VAC

60 Hz

Install the main isolator in

accordance with regulations

fA Burner (stage 1)

gSM2 Mixing valve motor

gSM3 Mixing valve motor

lÖ Burner

(burner stage 2 / mod.)

aVD/aVH External connections

Please refer to the control

manual Vitocontrol-S,

VD2/CT3.

5285 9 1 v1.6

Heating system types

Circuit Diagram 1

(continued)

sÖ A1 Close mixing valves

AContactor relay, field supplied

BHeating circuit controls

connected downstream

Switch contact closed: signal

for ”close mixing valve”.

Wiring diagram

Wiring of the Therm-Control in heating

systems with heating circuit control units

are not connected to the boiler control

unit via the LON.

Required coding:

Change “ C” to “2” - use the plug-in

connector 20 A1 to close the

downstream mixing valve. Change “0D”

to “1” - the Therm-Control acts on the

mixing valve of the downstream heating

circuits (for Vitotronic 200 and 300,

delivered condition).

5285 9 1 v1.6

Heating system types

Heating system types for modulating oilers

(continued)

System type 2 – Single- oiler system with shunt pump and return valve for raising the return temperature

in conjunction with

Vitorond 200, VD2

ABoiler with Vitotronic 300

BDomestic hot water tank

CHeating circuit with mixing valve

plugs

!Outdoor temperature sensor

?M2 Supply temperature sensor,

mixing valve circuit 2

?M3 Supply temperature sensor,

mixing valve circuit 3

§Boiler temperature sensor

%DHW tank temperature sensor

aJATemperature sensor T1

aJBTemperature sensor T2

sÖ M2 Heating circuit pump, mixing

valve circuit 2

sÖ M3 Heating circuit pump, mixing

valve circuit 3

sA Circulation pump for heating

the DHW tank

sK DHW re-circulation pump

sL Shunt pump

fÖ Power supply connection,

120 VAC

fA Burner (1st stage)

gS A1 Mixing valve motor for raising

the return temperature

gS M2 Mixing valve motor, mixing

valve circuit 2

gS M3 Mixing valve motor, mixing

valve circuit 3

lÖ Burner (2nd stage/modulating)

aVD Connection of external

equipment (see page 38)

aVH Connection of external

equipment (see page 39)

n the Vitorond the boiler supply and return are at the rear of the boiler.

5285 9 1 v.1.6

M2 M3

C C

1 6

1 3

17A

17B

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