Programming Unit; Closing The Heat Pump - Viessmann Vitocal 300-G Pro SPS Installation And Service Instructions For Contractors

Checking the electronic frost stat, type AC1-2W
Setting the frost stat switching points (if required)
Press the following keys:
1. Hold down
+ together for 5 s; the 1st param-
eter is displayed.
2.
/ for the required parameter.
3.
, to show the selected value.
Parameter Description
1SP Switching point for opening the switching
contact
1HY Switching point hysteresis for closing the
switching contact (1SP + 1HY)
All other parameters
Parameter only for emergency mode:
1PF Frost protection alarm in the event of sen-
sor fault
!
Please note
There will be no frost protection for the heat
pump if parameter 1PF is set to ON.
Only switch 1PF to ON for short term emer-
gency operation, for example in the event of a
sensor break.

Programming unit

Note
The programming unit is delivered fully fitted.

Closing the heat pump

!
Please note
Seal the appliance so it is soundproof and diffu-
sion-proof.
Check tightness of internal hydraulic connec-
tions.
!
Please note
To prevent the formation of condensate and the
excessive development of noise,
tightly seal the doors at the front.
Danger
The absence of component earthing can result
in serious injury from electrical current and in
component damage in the event of an electrical
fault.
Remake all earth connections.
(cont.)
4. Hold down
and simultaneously set the required
value with / .
5. Release
to save the selected value.
6. Press or wait 30 s to exit the menu.
Delivered condition
-1 °C
3 K
Do not adjust
OFF
!
Please note
Seal the appliance so it is soundproof and diffu-
sion-proof.
With line entries, ensure the diaphragm grom-
mets on the l.h. side panel are seated correctly.
Seal line entries with adhesive tape if necessary.
1. Prior to closing the heat pump, check the following:
■ Are all cables inside the wiring chamber securely
attached (strain relief, cable ties)?
■ Has the programming unit been fitted and con-
nected?
Have all earth conductors been connected?
■
Have all line entries been correctly applied and
■
sealed against moisture ingress?
■ Do all hydraulic connections have airtight sealing
and insulation with thermal and vapour diffusion-
proof materials?
■ Have transport brackets been removed?
Are the back and side panels securely attached?
■
2. Position the top panel.
Installation sequence
Setting range
-5 to -1
2 to 5 K
ON/OFF
43