Viessmann VITOCAL 300-A Guida rapida
Installation and service
instructions
for contractors
VIESMANN
Vitocal 300-A
Type AWCI-M-AC 301.A
Type AWO-M-AC 301.A
Air/water heat pump with electric drive, 230 V~
For applicability, see the last page
VITOCAL 300-A
5692 875 GB 7/2011 Please keep safe.
2
Please follow these safety instructions closely to prevent accidents and mate-
rial 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 envi-
ronmental pollution.
Note
Details identified by the word "Note" con-
tain additional information.
Target group
These instructions are exclusively
designed for qualified contractors.
■ Work on the refrigerant circuit must
only be carried out by qualified and
authorised refrigeration engineers
■ Work on electrical equipment must
only be carried out by a qualified elec-
trician
■ The system must be commissioned by
the system installer or a qualified per-
son authorised by the installer
Regulations
Observe the following when working on
this system:
■ National installation requirements
■ Legal instructions regarding the pre-
vention of accidents
■ Legal instructions regarding environ-
mental protection
■ The Code of Practice of relevant trade
associations
■ All current safety regulations as
defined by DIN, EN, DVGW, VDE and
all locally applicable standards
aÖNORM, EN and ÖVE
cSEV, SUVA, SVTI and SWKI
Working on the system
■ Isolate the system from the power sup-
ply and check that it is no longer 'live',
e.g. by removing the separate fuse or
by means of a main isolator
Note
In addition to the control circuit, there
may be several power circuits.
Danger
Contact with 'live' components
can lead to severe injuries.
Some components on the
PCBs will remain 'live' even
after the power supply has
been switched off.
Before removing covers from
appliances, wait at least 4
minutes for the power to dissi-
pate.
■ Safeguard the system against unau-
thorised reconnection
Safety instructions
Safety instructions
5692 875 GB
3
!Please note
Electronic assemblies can be
damaged by electrostatic dis-
charges.
Before beginning 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 sys-
tem.
Replace faulty components only
with original 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-author-
ised components and making
non-approved modifications or
conversions can compromise
safety and may invalidate our
warranty.
For replacements, use only orig-
inal spare parts supplied or
approved by Viessmann.
Safety instructions
Safety instructions (cont.)
5692 875 GB
4
Installation instructions
Preparing for installation
Product information.............................................................................................. 6
General information - electrical connection.......................................................... 6
Internal heat pump, type AWCI-M-AC 301.A....................................................... 7
External heat pump type AWO-M-AC 301.A........................................................ 14
Overview of possible system schemes................................................................ 24
System example 1, ID: 4605093_1006_01.......................................................... 25
System example 2, ID: 4605305_1006_01.......................................................... 33
DHW heating........................................................................................................ 41
Installation sequence
Removing the transport brackets......................................................................... 46
Fitting the outer panels......................................................................................... 48
Fitting the silencer hoods (only type AWO-M-AC 301.A)..................................... 55
Siting the heat pump............................................................................................ 56
Connecting the heating circuits and condensate drain........................................ 59
Electrical connections in the control panel........................................................... 63
Electrical connections in the heat pump control unit............................................ 71
Power supply........................................................................................................ 97
Closing the heat pump......................................................................................... 103
Service instructions
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance.......................................... 105
Further details regarding the individual steps....................................................... 106
Troubleshooting
Repair................................................................................................................... 120
Parts lists
Parts list type AWCI-M-AC 301.A......................................................................... 124
Parts list type AWO-M-AC 301.A......................................................................... 130
Commissioning/service reports
Hydraulic parameter report................................................................................... 138
Control parameters report.................................................................................... 138
Specification....................................................................................................... 144
Appendix
Heat pump commissioning order.......................................................................... 147
Index
Index
5692 875 GB
6
Type AWCI-M-AC 301.A
Reversible air/water heat pump with inte-
gral circulation pump (secondary pump),
3-way diverter valve and safety assem-
bly.
Type AWO-M-AC 301.A
Air/water heat pump without integral cir-
culation pump (secondary pump) or 3-
way diverter valve. A secondary pump
assembly (secondary pump and circula-
tion pump for cylinder heating) is availa-
ble as an accessory.
The 4 red cores in the heat pump control
unit must be removed for the external
circulation pumps to be connected (see
page 75).
General information - electrical connection
■Connecting cables from control
panel – heat pump control unit:
Observe information from page 63.
■Electrical connection of system
components (pumps, mixers, valves,
alarm facilities, contactors, function
extensions, sensors, etc.):
These connections are made inside
the heat pump control unit. Observe
information from page 71.
■Power supply:
The number of power cables from the
distribution board (meter box) to the
heat pump control unit and to the con-
trol panel depends on the system ver-
sion and tariffs used.
These connections are made inside
the heat pump control panel. Observe
information from page 97.
Preparing for installation
Product information
5692 875 GB
7
Installation room requirements
!Please note
Incorrect ambient conditions can
lead to system damage and can
put safe operation at risk.
■ The installation room must be
dry and free from the risk of
frost.
Ensure ambient temperatures
are higher than 0 °C and lower
than 35 ºC.
■ Prevent air contamination by
halogenated hydrocarbons
(e.g. as contained in paints,
solvents or cleaning fluids) and
excessive dust (e.g. through
grinding/polishing work).
■ Avoid continuously high humid-
ity levels (e.g. through frequent
drying of washing).
Note
Cool vapour is expelled from the air duct
on the discharge side during defrosting.
Take this into account when siting the
appliance (selecting the installation
room, determining the intake and dis-
charge sides).
!Please note
Overloading the floor can result in
building damage.
Observe the permissible floor
load.
■ Total weight type AWCI-M-AC 301.A:
289 kg
■ To prevent structure-borne noise,
never site the appliance on ceilings
with wooden joists (e.g. in the attic).
■ Observe minimum clearances.
■ Level the appliance horizontally.
■ Required room height at least 2.10 m.
■ Observe the minimum room volume
required to EN 378 of 16.5 m3.
Preparing for installation
Internal heat pump, type AWCI-M-AC 301.A
5692 875 GB
Installation
8
Siting
Minimum clearances and dimensions for installation in corners
A B
532
1330
830
990
880
1330
935
522
D
C
Discharge side on the left (delivered condition); hydraulic connections on the right
(on site)
AWall outlet, discharge side
BWall outlet, intake side
CPlaster finish
DTop edge, finished floor level
Preparing for installation
Internal heat pump, type AWCI-M-AC 301.A (cont.)
5692 875 GB
9
BA
CDE
F
G
C
E
D
= 700
80
810
95
118
522
845
532
127
117
810
686
80
379
Discharge side on the left (delivered condition); hydraulic connections on the right
(on site)
AExternal render
BWall
CWall outlet (EPP, can be trimmed to
the correct size from the outside
with a saw. Observe plaster thick-
ness)
DCompression sealing strip and
acrylic airtight seam (all-round)
EPU foam (all-round)
FPlaster finish/wall coating
GHydraulic connections and conden-
sate drain hose
Preparing for installation
Internal heat pump, type AWCI-M-AC 301.A (cont.)
5692 875 GB
Installation
10
Minimum clearances and dimensions for installation against the wall
B
F
E
G
D
C
AK
H
966
885
885
= 8 x 350
= 1 x 350
686
80
990
845
835
880
X
830
810
350
Discharge side on the left (delivered condition); hydraulic connections on the right
(on site)
AWall outlet on the discharge side
(made of EPP)
BWeather grille
CPartition (if required), see table
below
DWall outlet on the intake side (made
of EPP)
EAppliance connector, air duct,
intake side (made of EPP)
FHeat pump
GAppliance connector, air duct, dis-
charge side (made of EPP)
HStraight wall outlets as air ducts
(made of EPP)
K90° bend (made of EPP)
X Clearance of wall outlets
Preparing for installation
Internal heat pump, type AWCI-M-AC 301.A (cont.)
5692 875 GB
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9
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