Viessmann Vitocal 222-S Quick guide

Installation and service
instructions
for contractors
VIESMANN
Vitocal 222-S
Type AWT-AC 221.A04 to A13
Compact heat pumps, split version for heating and cooling opera-
tion
For applicability, see the last page
VITOCAL 222-S
5600 950 GB 10/2011 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
5600 950 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.)
5600 950 GB

4
Installation instructions
Preparing for installation
Application............................................................................................................ 6
Requirements for on-site connections.................................................................. 7
Overview of possible system schemes................................................................ 9
Designations in the system examples.................................................................. 11
System example, ID: 4605418_1102_01............................................................. 11
Installation sequence
Installing the external unit..................................................................................... 18
Installing the internal unit...................................................................................... 23
Connecting refrigerant lines................................................................................. 32
Connecting the secondary circuit......................................................................... 41
Connecting a cooling circuit if required................................................................ 44
Connections on the DHW side............................................................................. 44
Electrical connection............................................................................................ 45
Power supply........................................................................................................ 59
Closing the heat pump......................................................................................... 65
Service instructions
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance.......................................... 66
Further details regarding the individual steps....................................................... 68
Troubleshooting
Repairs................................................................................................................. 89
Internal unit parts lists
Internal unit parts lists.......................................................................................... 100
Overview of internal unit assemblies.................................................................... 101
Internal unit parts not shown................................................................................ 102
Internal unit casing............................................................................................... 102
Internal unit electrical equipment.......................................................................... 104
Internal unit hydraulics......................................................................................... 106
Internal unit cylinder............................................................................................. 108
External unit parts lists
External unit parts lists......................................................................................... 110
External unit type AWT-AC 221.A04.................................................................... 110
External unit type AWT-AC 221.A07.................................................................... 112
Overview of external unit assemblies, type AWT-AC 221.A10, A13.................... 114
External unit casing, type AWT-AC 221.A10, A13............................................... 115
Index
Index
5600 950 GB

5
External unit electrical equipment, type AWT-AC 221.A10, A13.......................... 117
External unit hydraulics, type AWT-AC 221.A10, A13......................................... 119
Commissioning/service reports
Hydraulic parameter report................................................................................... 121
Control parameter report...................................................................................... 121
Specification....................................................................................................... 126
Appendix
Heat pump commissioning order.......................................................................... 131
Certificates
Declaration of conformity...................................................................................... 132
Keyword index.................................................................................................... 133
Index
Index (cont.)
5600 950 GB