Expansion Vessel (Volume Calculation); Periodic Inspection Items - Carrier AquaSnap 30RB Serie Installationanweisungen

expansion volume can be calculated using the
owing formula.

14.3 - expansion vessel (volume calculation)

V
Loosen 2 turns for proper venting
Charge the water loop, with water, until the pressure on the
An expansion vessel has to be added in the water loop
Water pump is forced on. Loosen the cap of the air purge
with 30RB008X9 30RB012X9 30RB015X9.
valve to purge air from the water circuit. If air remains in the
system the system will not operate correctly.
The capacity of the internal expansion vessel fitted in
30RB008-9, 30RB012-9 30RB015-9 is 2 liters:
If water loop content is higher than specified in the
An expansion vessel has to be added in the water loop with
30RB008X9 30RB012X9 30RB015X9.
installation manual, an additional expansion vessel has to
be added.
30RB008-9, 30RB012-9 30RB015-9 is 2 liters:
The expansion volume can be calculated using the
installation manual, an additional expansion vessel has to
following formula.
be added.
The expansion volume can be calculated using the
following formula.
Where:
V: Necessary total vessel capacity (L)
ε:
Water expansion coefficient at average hot water
temperature
Vs: Total water volume in the closed system (Do not
include Hot Water Cylinder)
mple: Maximum water temperature 20°C, initial water charge 0.2MPa and system volume 200 P1: System pressure at tank setting position (Mpa_abs*).
s. The calculated Vessel capacity is: (Pipe inner pressure during pump operation before
heating device operates = water supply pressure)
P2: Maximum pressure used during operation at tank
setting position (Mpa_abs*=safety valve setting
pressure)
* The absolute pressure valve (abs.) is obtained by adding the atmospheric
Example: Maximum water temperature 20°C, initial water charge 0.2MPa and system volume 200
pressure (0,1 MPa (1 bar)) to the gauge pressure.
litres. The calculated Vessel capacity is:

14.4 - periodic Inspection Items

unit
nsulation measurement (Power source circuit/
Compressor)
Operation check
Refrigerant leakage/ Water leakage inspection.
Water heat exchanger inspection (Internal dirt and
clogging)
Inlet / Outlet water temperature measurement
Circulation pump inspection
Automatic air purge valve inspection
Expansion vessel
Heater assembly
Flow switch
Safety valve
Power source measurement (No-load voltage/ Rated
operation)
Air heat exchanger inspection (Dirt and clogging)
Fan inspection (Scratch, damage)
ε Vs
P
1
1
P
2
0
4
5
10
15
ε Vs
20
V
P
25 1
1
P
30
2
35
40
0
45
4
5
10
15
20
25
30
35
40
45
frequency
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
position (Mpa_abs*=safety valve setting pressure)
* The absolute pressure valve (abs.) is obtained by adding the The initial pressure of this expansion Vessel is 0.1Mpa
compressor start.
(1 bar).The release pressure of the safety valve is 0.3Mpa
When completing the Test Run, during the commissioning of
(3 bar).
The initial pressure of this expansion Vessel is 0.1Mpa (1 bar).
the system, the water pressure in the system may drop below
1,5 bar. In this event please add more water to the system.
The release pressure of the safety valve is 0.3Mpa (3 bar).
In the case of a new installation, or cleaning the circuit, it is
Water temperature and expansion coefficient (ε)
necessary to perform a preventive cleaning of the system.
Water temperature (°c)
0
4
Where:
5
10
Vs: Total water volume in the closed system (Do not include
Hot Water Cylinder)
15
20
heating device operates = water supply pressure)
25
30
position (Mpa_abs*=safety valve setting pressure)
* The absolute pressure valve (abs.) is obtained by adding the
35
40
The initial pressure of this expansion Vessel is 0.1Mpa (1 bar).
The release pressure of the safety valve is 0.3Mpa (3 bar).
45
Example: Maximum water temperature 20°C, initial
water charge 0.2MPa and system volume 200 litres.
0.0002
The calculated Vessel capacity is:
0.0000
0.0000
0.0003
0.0008
0.0017
0.0029
0.0043
0.0050
0.0078
0.0100
0.0017
. 1 36
0 (
1
0 (
periodic inspection details
Insulation measurement with a mega tester
Cooling operation check with remote controller.
Visual inspection and check with a leak tester: No leakage must be found.
Checking for water dirtiness in a closed cycle, Cleaning.
Temperature measurement: Temperature measurement during an operation.
No leakage or abnormal noise must be found (Replacement every 10 years: Charged).
Water leakage, Air vent.
Visual check for charge pressure abnormality, water leakage, or corrosion.
Check for appearance damage, deformation, or loose terminal
Operation check while running
Water leakage, Appearance check, Drainage check.
Electronic voltage measurement.
Visual inspection, Clear clogging
Check for scratches or damages to the fan or abnormal motor sound
expansion rate (ε)
0.0002
0.0000
0.0002
0.0000
0.0003
0.0000
0.0008
0.0000
0.0017
0.0003
0.0029
0.0008
0.0043
0.0017
0.0050
0.0029
0.0078
0.0043 0.0100
0.0050
0.0078
0.0100
0.0017 200
. 1 36
0 ( 2 . 0 ) 1 .
1
0 ( 3 . 0 ) 1 .
200
2 . 0 ) 1 .
3 . 0 ) 1 .
30RB 15
30RB 15
27