43
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.
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.
Parameter
Description
Delivered condition
Setting range
1SP
Switching point for opening the switching
contact
-1 °C
-5 to -1
1HY
Switching point hysteresis for closing the
switching contact (1SP + 1HY)
3 K
2 to 5 K
All other parameters
Do not adjust
Parameter
only
for emergency mode:
1PF
Frost protection alarm in the event of sen-
sor fault
OFF
ON/OFF
!
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.
!
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
Checking the electronic frost stat, type AC1-2W
(cont.)
5549 991 GB
Installation
Summary of Contents for 301.BS090
Page 99: ...99 5549 991 GB...
