Viessmann VITOCAL 300-A Quick guide

VIESMANN
Installation and service
instructions
for contractors
Vitocal 300-A
Type AWC-I-M, AW-O-M
Compact heat pump with electric drive, 230 V~
For applicability, see the last page
VITOCAL 300-A
5366 060 GB 6/2008 Please keep safe.

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 information.
Target group
These instructions are exclusively
designed for qualified personnel.
&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
&all legal instructions regarding the
prevention of accidents,
&all legal instructions regarding
environmental protection,
&theCodeofPracticeofrelevant
trade associations.
&all current safety regulations as
defined by DIN, EN, DVGW, VDE
and all locally applicable standards
Workingonthesystem
&Isolate the system from the power
supply and check that it is no longer
'live', e.g. by removing a separate
fuse or by means of a main isolator.
&Safeguard the system against
unauthorised reconnection.
!Please note
Electronic modules can be
damaged by electrostatic dis-
charges.
Touch earthed objects, such as
heating or water pipes, to dis-
charge static loads.
Repair work
!Please note
Repairing components that ful-
fil a safety function can com-
promise the safe operation of
your heating system.
Replace faulty components
only with original Viessmann
spare parts.
Safety instructions
2
Safety instructions
5366 060 GB

Ancillary components, spare and
wearing parts !Please note Spare and wearing parts that
have not been tested together
with the heating system can
compromise its function. Instal-
ling non-authorised compo-
nents and non-approved
modifications or conversions
can compromise safety and
may invalidate our warranty.
For replacements, use only ori-
ginal spare parts supplied or
approved by Viessmann.
Safety instructions (cont.)
3
Safety instructions
5366 060 GB

Installation instructions
Preparing for installation
Product information .................................................................................... 8
General information regarding electrical connection .................................... 8
Internal heat pump, type AWC-I-M............................................................... 9
External heat pump type AW-O-M ............................................................... 20
Overview of possible system diagrams........................................................ 34
Function description for the system versions ............................................... 34
System version 1 ........................................................................................ 37
System version 2 ........................................................................................ 42
System version 3 ........................................................................................ 47
DHW heating 1 ........................................................................................... 55
DHW heating 2 ........................................................................................... 57
Installation sequence
Installing the heat pump.............................................................................. 59
Primary side connections............................................................................ 60
Secondary side connections (heating circuits)............................................. 61
Electrical connections in the control panel................................................... 64
Electrical connections in the control unit...................................................... 70
Power supply.............................................................................................. 95
Closing the heat pump ................................................................................ 100
Service instructions
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance................................... 103
Further details regarding the individual steps .............................................. 104
Troubleshooting
Control unit diagnostics .............................................................................. 116
Measures in case the room temperature is constantly too low ...................... 129
No programming unit display....................................................................... 130
Control settings
Menu structure overview –main menu ........................................................ 131
Control settings by the contractor................................................................ 131
System definition control settings
System diagram.......................................................................................... 132
Language selection .................................................................................... 132
Temperature differential heating.................................................................. 132
Swimming pool ........................................................................................... 133
Cascade control ......................................................................................... 134
Index
4
Index
5366 060 GB

Number of external heat pumps .................................................................. 134
Output lag heat pump.................................................................................. 134
External extension...................................................................................... 135
External operating mode changeover heating circuits.................................. 135
External operating mode changeover effect ................................................ 136
External operating mode changeover duration ............................................ 137
External demand/mixer OPEN .................................................................... 137
External blocking/mixer CLOSED................................................................ 138
External blocking effect............................................................................... 140
Vitosolic type .............................................................................................. 141
Vitocom 100 ............................................................................................... 141
Additional output with switching times (e.g. DHW circulation pump) ............. 142
Compressor control settings
Compressor enable .................................................................................... 143
Heat pump output ....................................................................................... 143
Temperature for defrost stop ....................................................................... 143
Control settings, external heat source
External heat source................................................................................... 145
Priority of external heat sources.................................................................. 145
Dual-mode temperature .............................................................................. 145
External heat source for DHW ..................................................................... 146
DHW control settings
Cylinder temperature DHW ......................................................................... 147
DHW switching times .................................................................................. 147
Minimum temperature ................................................................................. 147
Max. temperature ....................................................................................... 147
Hysteresis/Hysteresis booster heater.......................................................... 148
Start optimisation DHW............................................................................... 150
Stop optimisation DHW............................................................................... 150
DHW auxiliary function................................................................................ 150
Set DHW temperature 2 .............................................................................. 150
Temp. sensor 2 ........................................................................................... 150
Booster heater............................................................................................ 151
DHW with electric heating ........................................................................... 151
Control settings, electric heater
Instantaneous heating water heater (accessory) ......................................... 152
Electric heating........................................................................................... 152
Max. stage electric booster heater .............................................................. 152
Stage at power-OFF ................................................................................... 153
Index (cont.)
5
Index
5366 060 GB

Control settings, hydraulics
Heat pump for drying buildings.................................................................... 154
Screed program.......................................................................................... 154
Set flow temperature for external demand ................................................... 156
Control settings, heating water buffer cylinder
Heating water buffer cylinder....................................................................... 157
Switching times, heating water buffer cylinder ............................................. 157
Set temperature for fixed value (switching times)......................................... 157
Hysteresis .................................................................................................. 158
Max. temperature ....................................................................................... 158
Control settings, heating circuits
Room temperatures and switching times ..................................................... 160
Activating the remote control....................................................................... 160
Heating curve slope/level............................................................................ 160
Influence of room temperature hook-up ....................................................... 160
Room temperature hook-up (heating circuits) .............................................. 161
Maximum flow temperature ......................................................................... 162
Date/time control settings
Date and time ............................................................................................. 163
Automatic summer/winter time changeover ................................................. 163
Components
Temperature sensor resistance curves........................................................ 164
Appliance fuse protection............................................................................ 164
Connection and wiring diagrams
Overview of the PCBs and connection options............................................. 166
Safety chain, control circuit, main power circuit ........................................... 174
Parts lists
Parts list, type AWC-I-M.............................................................................. 185
Parts list, type AW-O-M............................................................................... 192
Commissioning/service reports
Hydraulic parameters report........................................................................ 199
Control parameters report ........................................................................... 199
Specification............................................................................................. 203
Index (cont.)
6
Index
5366 060 GB

Appendix
Vitocal 300-A commissioning order ............................................................. 206
Certificates
Declaration of conformity ............................................................................ 207
Keyword index .......................................................................................... 208
Index (cont.)
7
Index
5366 060 GB

Vitocal 300-A, type AWC-I-M
Air-water heat pump with integral circulation pump (secondary pump), three-
way diverter valve, safety assembly and diaphragm expansion vessel.
Vitocal 300-A, type AW-O-M
Air-water heat pump without integral circulation pump (secondary pump) and
without three-way diverter valve. A secondary pump group (secondary pump
and circulation pump for cylinder heating) is available as an accessory.
The four red cores in the control unit must be removed for the external circula-
tion pumps to be connected (see page 79).
General information regarding electrical connection
&The total output of all components
connected directly to the control unit
(e.g. pumps, valves, message facil-
ities, contactors) must not exceed
1000 W.
If the total output ≤1000 W, the indi-
vidual rating of a component (e.g.
pump, valve, message facility, con-
tactor) can be greater than speci-
fied.
&If two components are connected to
the same terminal, press both cores
together into a single wire ferrule.
&If the compressor and/or instanta-
neous heating water heater (acces-
sories) are operated at a lower tariff
(power-OFF), provide an additional
cable for the power-OFF signal (e.g.
NYM 3 x 1.5 mm
2
) from the distribu-
tion board (meter box) to the heat
pump control unit (see page 98).
&The number of power supply cables
from the distribution board (meter
box) to the control unit and heat
pump (control panel) depends on
the system version and tariffs used.
&The KM BUS wires are interchange-
able.
For further information see control
panel (page 66), control unit
(page 70) and power supply connec-
tion (page 95).
Product information
8
Preparing for installation
5366 060 GB

!Please note
Avoid damaging the appliance
during handling.
Never load the top, front or
side panels of the appliance.
!Please note
If the compressor is at a steep
angle in the heat pump, lubri-
cant will enter the refrigerant
circuit and damage the appli-
ance.
Never tilt the heat pump more
than 45° during handling and
installation.
Requirements of the installation room
&The installation room must be dry
and safe from the risk of frost.
!Please note
High floor loading can result
in building damage.
Observe the permissible floor
load.
Total weight type AWC-I-M: 255 kg
&To prevent structure-borne noise,
never set up the appliance on ceil-
ings with wooden joists (e.g. in the
attic).
&Observe minimum clearances.
&Level the appliance.
&Required room height at least
2.10 m.
Internal heat pump, type AWC-I-M
9
Preparing for installation
5366 060 GB
Installation

Minimum clearances
Outlet side on the left (delivered con-
dition)
APower supply
BHydraulic connection and conden-
sate drain
Outlet side on the right
APower supply
BHydraulic connection and conden-
sate drain
Internal heat pump, type AWC-I-M (cont.)
10
Preparing for installation
5366 060 GB