-
manual
HRC
70
PILOT -PREMIUM-
/2
-
40
During normal operation :
• V1 - V2 and V4 are closed
• V3 and V5 are open
In case prolonged stop (winter) :
• V3 and V5 are closed
• V1 - V2 and V4 are open
Diagram of draining equipment
V1 - V2
: Drainage valves
V3 - V4 - V5 : Insulating valves
HP
70
70
HP
V3
V5
V4
V1
V2
70
Ensure
that the
HRC
70
Heat
Pump is properly
drained.
- For a heating installation with radiators:
The expansion vessel equipping the boiler may be sufficient.
Always check that the capacity of the existing expansion vessel
corresponds to the total volume of the installation (take into
account the 60L needed for the HRC
70
Pilot when calculating the
total volume of the installation, without forgetting the volume of
a buffer tank, if applicable).
- Sizing the expansion vessel:
The volume of the expansion vessel which is required for the
HRC
70
Heat Pump depends on the height of the installation. You
will need to adjust the pre-charged pressure of the expansion
vessel and check that the capacity of the expansion vessel
corresponds to the total volume of the installation:
2.5
5
7.5
10
12.5
15
0.25
0.5
0.75
1
1.25
1.5
25% glycol
15.9
14.5
13.0
11.6
10.1
8.7
30% glycol
15.6
14.2
12.7
11.3
9.9
8.5
35% glycol
14.7
13.4
12.1
10.7
9.4
8.0
40% glycol
14.0
12.7
11.4
10.2
8.9
7.6
Height of installation (m)
Pre-charged pressure (bars)
(1)
Volume of water in the
installation covered by 1 liter
of the expansion vessel
(liters)
(2)
(1)
: Deflate and check pressure in the expansion vessel if
necessary.
(2)
: As a guideline, take into account:
•11 litres per kW heating capacity for steel radiators
+ 60 liters for HRC
70
Pilot
+ buffer tank (if applicable)
• 13 liters per kW heating capacity for cast-iron radiators
+ 60 liters for HRC
70
Pilot
+ buffer tank (if applicable)
• 17 liters per kW heating capacity for underfloor heating
+ 60 liters for HRC
70
Pilot
+ buffer tank (if applicable)
Or, if known, use the exact volume.
Example
• Installation with 12kW cast-iron radiators
• Height of installation = 10m
• Frost/ice protection using 25% glycol
Total volume of installation = 12 x 13 + 60 = 216 liters
1 liter of expansion vessels covers 11.6 liters of the volume of the installation, so here you
would need an expansion vessel with a minimum volume of 18 liters (216 / 11.6).
A4 - Sizing the expansion vessel
A5 - Programming the heating modes
Note 1 :
The values given here are for a radiator installation
(water at 80°C). For use with an underfloor heating
installation, multiply these values by 2.
Note 2 :
The concentration of monopropylene glycol should
not be less than 25%.
It is possible to program the heating modes for the different days
of the week, and for the different circuits, with different heating
levels based on the needs of the specific day. The installation will
automatically follow the specified programming.
However, this is not recommended and must be avoided when
using a Heat Pump (It is preferable to avoid any lowering of
temperature).
