Viessmann VITOCAL 300-A Quick start guide

Connection and wiring diagram
for contractors
VIESMANN
Vitocal 300-A
Type AWO-AC 301.B11 to B14
Air/water heat pump with electric drive, 400 V~
VITOCAL 300-A
5516 440 GB 5/2014 Please keep safe.

2
Please follow these safety instructions closely to prevent accidents and material losses.
Safety instructions explained
Danger
This symbol warns against the risk of injury.
!Please note
This symbol warns against the risk of material losses
and environmental pollution.
Note
Details identified by the word "Note" contain additional infor-
mation.
Target group
These instructions are exclusively intended for authorised con-
tractors.
■ Work on gas installations must only be carried out by a reg-
istered gas fitter.
■ Work on the refrigerant circuit may only be carried out by
authorised refrigeration engineers.
■ Work on electrical equipment must only be carried out by a
qualified electrician.
■ The system must be commissioned by the system installer
or a qualified person authorised by the installer.
Regulations
Observe the following when working on this system:
■ National installation regulations
■ Statutory regulations regarding the prevention of accidents
■ Statutory regulations regarding environmental protection
■ The Code of Practice of relevant trade associations
■ All current safety regulations as defined by DIN, EN, DVGW,
TRGI, TRF, VDE and all locally applicable standards
aÖNORM, EN, ÖVGW-TR Gas, ÖVGW-TRF and ÖVE
cSEV, SUVA, SVGW, SVTI, SWKI, VKF and EKAS
guideline 1942: LPG, part 2
If you smell gas
Danger
Escaping gas can lead to explosions which may result
in serious injury.
■ Do not smoke. Prevent naked flames and sparks. Do
not switch lights or electrical appliances on or off.
■ Close the gas shut-off valve.
■ Open windows and doors.
■ Evacuate any people from the danger zone.
■ Notify your gas or electricity supply utility from outside
the building.
■ Have the power supply to the building shut off from a
safe place (outside the building).
If you smell flue gas
Danger
Flue gas can lead to life threatening poisoning.
■ Shut down the heating system.
■ Ventilate the installation site.
■ Close all doors in the living space.
Flue systems and combustion air
Ensure that flue systems are clear and cannot be sealed,
for instance due to accumulation of condensate or other cau-
ses. Ensure a sufficient supply of combustion air.
Instruct system users that subsequent modifications to the
building characteristics are not permissible (e.g. cable/pipe-
work routing, cladding or partitions).
Danger
Leaking or blocked flue systems, or an insufficient sup-
ply of combustion air can cause life threatening poi-
soning from carbon monoxide in the flue gas.
Ensure the flue system is in proper working order. Aper-
tures for supplying combustion air must be non-closa-
ble.
Extractors
The operation of equipment that extracts air to the outside
(cooker hoods, extractors, air conditioning units) can create
negative pressure. If the appliance is operated at the same
time, this can lead to reverse flow of the flue gas.
Danger
The simultaneous operation of the appliance and
equipment that extracts air to the outside can result in
life threatening poisoning due to reverse flow of the flue
gas.
Fit an interlock circuit or take suitable steps to ensure
a sufficient supply of combustion air.
Working on the system
■ Where gas is used as the fuel, close the main gas shut-off
valve and safeguard it against unintentional reopening.
■ Isolate the system from the power supply (e.g. by removing
the separate fuse or by means of a mains isolator) and check
that it is no longer 'live'.
Note
In addition to the control circuit, there may be several power
circuits.
■ Safeguard the system against reconnection.
Danger
Contact with 'live' components can result in severe inju-
ries. Some components on the PCBs will remain 'live'
even after the power supply has been switched off.
Prior to removing equipment covers, wait at least 4
minutes to allow the voltage to dissipate.
Danger
Hot surfaces can cause burns.
■ Before maintenance or service work, switch OFF the
appliance and let it cool down.
■ Never touch hot surfaces on the appliance, burner,
flue system or pipework.
Safety instructions
Safety instructions
5516 440 GB

3
!Please note
Electronic assemblies can be damaged by electrostatic
discharge.
Prior to commencing any work, touch earthed objects,
such as heating or water pipes to discharge static
loads.
Repair work
!Please note
Repairing components that fulfil a safety function can
compromise the safe operation of your system.
Replace faulty components with genuine Viessmann
spare parts.
Auxiliary components, spare and wearing parts
!Please note
Spare and wearing parts that have not been tested
together with the system can compromise its function.
Installing non-authorised components and making non-
approved modifications or conversions can compro-
mise safety and may invalidate our warranty.
For replacements, use only original spare parts sup-
plied or approved by Viessmann.
Safety instructions
Safety instructions (cont.)
5516 440 GB

4
■ Observe the information on electrical connections in the
installation and service instructions.
■ In the case of a power supply with power-OFF facility, the
power to the control circuit (heat pump control unit) must be
supplied without interruption by the power supply utility.
■ Identification of electrical equipment (in accordance with
DIN/IEC 81346-2):
Example: /7.5
/ = Cross-reference
7. = Sheet number
5 = Current path
Electrical equipment
B Pressure switch, temperature switch, thermal relay
F MCB/fuse, thermal relay
J Plug-in connector
K Contactors, relays
M Motor, circulation pump, motorised valve, compressor
Q Mains isolator, contactor
R Choke coil
S Control switch
T Inverter
X Terminals, plugs
Connection and wiring diagram
Notes
5516 440 GB
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5
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
viesmann Type AWO-AC 301.B
Compressor power circuit Sheet 1
GND
Rx/Tx+
Rx/Tx-
3/N/PE
400V/50Hz
U1 V1 W1 PE
-M1
1
2
-Q1
/2.5
3
4
5
6
-T1
-J1 L1 L2 L3 PE
-J3 UV W PE -J2 1 2 3
1
2
3
4
5
6
1 2
34
PE
1~
M
Θ
-X41 L1 L2 L3 N PE
-X42 1
-X42 2
-X42 3
-X42 4
-X42 5
L1V L2V L3V NV PE
1
-PE1
12
-F2
6.3A
4
-PE
-N -PE
-M5
/1.2
/2.5
-A+
/
7.4
-B-
/
7.4
-GND1
/
7.4
B
3~
M
-GND
/
7.3
-Rx_Tx+
/
7.3
-Rx_Tx-
/
7.3
-5V+
/
7.3
R1R2 R3
D
C
A
L
E
FG
H
K
AEarth rivet
BMains terminal
CFan
DFan terminal
ECoils
FInverter
GInverter mains input
HModbus refrigerant circuit controller
KCompressor
LMains
Connection and wiring diagram
Sheet 1, compressor power circuit
5516 440 GB
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6
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
viesmann Type AWO-AC 301.B
Safety chain Sheet 2
230V/50Hz
U6
U5
U4
U2
U8
U12
L1
U9
U11
-X3.18 123
1
2
-S1 3
4
1
2
-F1
6.3A (slow)
1
-X
2
-X3
16
-X2
3
-X1 PE
-X2 N
-X3 1
-X3 13
-X3 11
-X3 3
-X3 2
-X3 7
5
-PE
-X3
12
-X3
10
-X3
4
-X3 14
-X3 6
-215 /3.4
1
-216 /3.4
4
-216 /3.4
3
-216 /3.4
2
-216 /3.4
1
-X3 9-X3 8
11 12
-M5
B/1.2
-215
/3.5
3
-116 6
-116 5
-215
/3.5
7
A1
A2
-Q1
3
-X 4
-X2 N
11
12
-B2 P
-X42
1
2
-215
/3.5
4
-215
/3.5
6
13 14
-S3
-131
1-131
2
-X5
1
-X5
2
-X5
3
-X5 4
-X7
7
-X7
6
-X5
6
-X5
8
-X5 9
-X300 1
-X300 2
-L1´/3.6
4.6
7.0
-N´/6.5
-PE /6.5
-SHD /7.2
-N -PE
-X42
-X9.1/
3.4
-X9.2
/
3.4
12/1.5
34/1.5
56/1.5
BK
0.75
H BK
0.75
U3
Jumper BK
0.75
N
G
F
E
D
C
A
B
K
H
R
Q
P
N
U9
M
L
L
AMains
BPower supply, cross connect PCB
CDemand externally
DJumper (fault message, lag heat pump)
EMessage, flow switch
FBlock externally
GPower-OFF
HJumper
KThermal relay - fan
LFan terminal
MFrost stat
NSafety high pressure switch
PControl high pressure switch
QMotor overload relay
RSafety contactor
Connection and wiring diagram
Sheet 2, safety chain
5516 440 GB
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
viesmann Type AWO-AC 301.B
Main PCB Sheet 3
-216
/2.2
-215 -214
-212-211
1 2 3 4 1 2 3 4 5 6 7 1 2 3 4 5
2 1
11234 212345
-215 -214-216
-210 -211 -212 -213 -40
F3 6.3 A (slow)
X1
X2
-210
X9.2
2.5 X9.1
2.5
-40
-213
-X2 N
-X1
PE
-L1´
2.2
/2.6
A
B
ASafety chain BRibbon cable to the controller and sensor PCB
Connection and wiring diagram
Sheet 3, main PCB
5516 440 GB
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8
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
viesmann Type AWO-AC 301.B
Expansion PCB Sheet 4
2 1 1 2 3 4 1 2 1 12 3 4 5 6 7 23
-L1´
-225-224-223-222-220
X1
2.2
-220 -222 -223 -224 -225
A
ARibbon cable to the controller and sensor PCB
Connection and wiring diagram
Sheet 4, expansion PCB
5516 440 GB
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
viesmann Type AWO-AC 301.B
Controller and sensor PCB Sheet 5
X25 1
+
-
2
193B
193C
X15
12
11
-SF2
aVG
F23
F0
sVA
X24
F26
F20 F21 F14 F16
F12 F13
F7 F8
-X22
F4 F27
F11
J3 J4
2 3 4+
-
2
-SF3
+
-
2
-SF9
2
+
-
-SF8
3
2
4
-X18
GND1
/
7.4 A+
/
7.4
B-
/
7.4
X18
X20
X3
X2 X31
A
B C D
E
F
G
H
K
AEEV PCB
BRibbon cable to the main PCB and expansion PCB
CTo the programming unit
DCoding card
ETemperature sensor, air intake (Pt500A)
FTemperature sensor, air discharge (Pt500A)
GReturn temperature sensor, secondary circuit (Pt500A)
HHeat pump interface
KFlow temperature sensor, secondary circuit (Pt500A)
Connection and wiring diagram
Sheet 5, controller and sensor PCB
5516 440 GB
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
viesmann Type AWO-AC 301.B
Cross connect PCB Sheet 6
X3
N
X2
X1
?
F1
18
3
2
1N N N N N N N N N N N N N N N
1? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
6.3A (slow)
17 16 15
5 4 3 2 1
X8
X4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
123456789101112
X6
14 13 12 11 10 9 8 7 6 5 4 3 2 1
-X5 -X7
PE
NL1
1/N/PE
230V/50Hz
L1 L'
NN'
A
B
AHeat pump interface
Connection and wiring diagram
Sheet 6, cross connect PCB
5516 440 GB
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
viesmann Type AWO-AC 301.B
EEV PCB Sheet 7
1
-J15 2323
1
-J22
-J20
1
-M4 AHX
-Y1
H/C
x1x2
4
2
-J17
1
2
-J14
1
2
-J12
1
2
-J9
1
2
-J5
1
2
3
-J7
-M6 PHX
-J10
1
2
3
4
5
6
-J13
1
2
3
4
5
6
2
3
4
-J21
1
-J25
1
2
3
GND
-J26
1
+24V
2
+ -
-T4
+ -
-T5
+ -
-T7
x1 x2
-P1
U-P2
23
1
-J19
x1
x2
-Y2
-B1 -+
-L1´/2.2
-N´ /2.2
-PE /2.2
B1/2.6
x1 x2
U
-GND/1.6
-Rx_Tx-/1.6
-Rx_Tx+/1.6
-GND1/5.2
-B- /5.2
-A+/5.2
-5V+/1.6
54
6
-J11 32 1
a1b1a2
b2
M
54
6 3 2 1
a1b1a2
b2
M
-GND1/
-B- /1.3
-A+/1.3
1.3
+ -
-T6
A
B
C D E F G
H
K
L
M
P
N
Q
A4-way diverter valve
BSolenoid valve, intermediate injection
CModbus: Inverter switching
DModbus: Fan switching
EModbus: Connection cable to the controller and sensor
PCB
FElectronic expansion valve for suction gas superheating
(AHX)
GElectronic expansion valve for level control, refrigerant
collector (PHX)
HLow pressure sensor
KHigh pressure sensor
LSuction gas temperature sensor (upstream of compres-
sor) (NTC 10 kΩ)
MLiquid gas temperature sensor (downstream of con-
denser) (NTC 10 kΩ)
NSuction gas temperature sensor (downstream of evapo-
rator) (NTC 10 kΩ)
PLiquid gas temperature sensor (downstream of refrigerant
collector) (NTC 10 kΩ)
QLevel sensor, refrigerant collector
Connection and wiring diagram
Sheet 7, EEV PCB
5516 440 GB
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Viessmann Limited
Hortonwood 30, Telford
Shropshire, TF1 7YP, GB
Telephone: [phone]
Fax: [phone]
E-mail: [email protected]
Viessmann Werke GmbH&Co KG
D-35107 Allendorf
Telephone: [phone]
Fax: [phone]
www.viessmann.com
Viessmann Limited
Hortonwood 30, Telford
Shropshire, TF1 7YP, GB
Telephone: [phone]
Fax: [phone]
E-mail: [email protected]
Viessmann Werke GmbH&Co KG
D-35107 Allendorf
Telephone: [phone]
Fax: [phone]
www.viessmann.com
5516 440 GB Subject to technical modifications.