Riello CSV 25 R User manual

cod. 20024195 rev. 9 10/2018
CSV 25-35 R
EN INSTALLATION INSTRUCTIONS

2
This manual, Code 20024195 - Rev. 9 (10/2018)
comprises 16 pages.
CONFORMITY
Solar collectors conform to EN 12975 standard and to Solar Keymark certication standard.
Range
MODEL CODE
CSV 25 R 20023353
Kit of 5 collectors CSV 25 R 20023354
CSV 35 R 20023416
Kit of 5 collectors CSV 35 R 20023417
RANGE
Contents
CONTENTS
The following symbols are used in this manual:
9 CAUTION! = Identies actions that require caution and
adequate preparation.
0 STOP! = Identies actions that you MUST NOT do.
Thismanual,Code
-Rev.
comprises
pages.
GENERAL INFORMATION ...............................3
1 System layout ................................3
2 Identication ................................4
3 Technical specications.........................5
4 Connections .................................7
5 Water circuit .................................8
INSTALLATION.........................................10
6 Unpacking the product ........................ 10
7 Handling................................... 10
8 Installation ..................................11
9 Filling the circuit ............................. 12
10 Checks .................................... 13
COMMISSIONING AND MAINTENANCE ..................14
11 Maintenance................................ 14

3
GENERAL INFORMATION
System layout
1 SYSTEM LAYOUT
Collector
probe socket
P1
H3
Collector
return Collector outlet
P2
H2
L1
L2
H1
L3
Seal
Insulation
Bottom pipe
Glass
Vacuum
Absorbent
coating
Collector
foot
Support frame
Direction of flow
Evacuated
tube
Aluminium absorber
Top
cover plat
Top pipe
Reflective
mirror
Description H1 H2 H3 L1 L2 L3 P1 P2 U/M
CSV 25 R 1730 65 1700 1600 1552 110X14 68 145 mm
CSV 35 R 2260 2212 110X20 mm
Generalinformation

4
GENERAL INFORMATION
Identication
CODICE : 20025360
FABBRICATO IN ITALIA
DESCRIZIONE : CTE25V
S/N :
COLLETTORE SOLARE SOTTOVUOTO
DIMENSIONI: 1600X1730X145 mm
SUPERFICIE LORDA: 2,77 m
2
TEMPERATURA DI STAGNAZIONE: 268°C
SUPERFICIE DI APERTURA: 2,40 m
2
CONTENUTO LIQUIDO: 2,05 l
SUPERFICIE ASSORBITORE : 2,69 m
2
PESO A VUOTO: 52 kg
LIQUIDO TERMOVETTORE:
GLICOLE PREMIX (Acqua + Glicole, max concentrazione 50%)
FLUIDO NON GLICOLICO (Acqua + Inibitori di corrosione
atossici + Potassio Formiato, max concentrazione 50%)
MAX PRESSIONE ESERCIZIO: 10 bar
da Riello S.p.A.
CEN 025
20022981_E4
EN 12975
10000001 BAR CODE 128B
Anno di produzione
SERIALE PROGRESSIVO
FABBRICATO IN ITALIA
DESCRIZIONE : CP25TVA
S/N :
COLLETTORE SOLARE PIANO
DIMENSIONI: 2046X1187X90 mm
SUPERFICIE LORDA: 2,43 m
2
TEMPERATURA DI STAGNAZIONE: 201 °C
SUPERFICIE DI APERTURA: 2,20 m
2
CONTENUTO LIQUIDO: 1,6 l
SUPERFICIE ASSORBITORE: 2,15 m
2
PESO A VUOTO: 36,5 kg LIQUIDO TERMOVETTORE:
ACQUA+GLICOLE PROPILENICO
MAX CONCENTRAZIONE GLICOLE: 50%
MAX PRESSIONE ESERCIZIO: 10 bar
da Riello S.p.A.
20038498_E1
EN 12975
Certif. 011-7S1766 F
12000025 BAR CODE 128B
Anno di produzione
CODICE : 20038250
RIELLO S.p.A.
Via Ing. Pilade Riello, 7 -37045 Legnago (VR) -ITALIA
Matricola
Modello
Codice
Data plate
Serial number plate
Code
Year of production
Serial Number
Description
by Riello S.p.A.
Made in Italy
Flat plate
solar collector
Dimensions
Gross area
Aperture area
Absorber area
Empty weight
Maximum operating pressure
Stagnation temperature
Liquid content
Max glycol concentration
Heat transfer fluid:
water+propylene glycol
9 If these plates or any other means of clearly identifying the product are defaced, removed or lost, proper installation and ser-
vicing may be rendered difcult.
2 IDENTIFICATION

5
GENERAL INFORMATION
Technical specications
DESCRIPTION CSV 25 R CSV 35 R
Total area 2,77 3,91 m2
Exposed area 2,40 3,43 m2
Effective absorption area 2,69 3,84 m2
Water connections threaded on Ø 18 pipes mm
Empty weight 52 74 kg
Liquid content 2,05 2,90 l
Recommended ow rate per m2of panel 30 l/(h x
m2)
Absorption (α)> 94 %
Emissions (ε)< 7 %
Maximum permitted pressure 10 bar
Stagnation temperature 268 °C
Maximum number of collectors connectable in series 6n°
Efciency parameters
Description Absorber surface area Open surface area U/M
Optical efciency (ηο) (*) 0,627 0,70 -
Thermal dispersion factor (a1) (*) 1,027 1,15 W/(m2K)
Thermal dispersion temperature dependence factor
(a2) (*) 0,010 0,011 W/(m2K2)
Description U/M
IAM T (50°) (*) 1,07 -
IAM L (50°) (*) 0,954 -
Efciency (ηcol) (**) 64 %
(*) Tested according to EN 12975, referred to a 33.3% water-
glycol mix, ow rate of 170 l/h (CSV 25 R) - 240 l/h (CSV 25
R), and irradiation G = 800W/m2.
Tm = (Coll._inlet _temp.+Coll._outlet_temp.)/2
T*m = (Tm-T_ambient)/G
(**) Calculated with a temperature difference of 40K between
the solar collector and the surrounding air, and with total
solar radiation of 1000 W/m2referred to the exposed area.
Efciency curve referred to exposed area
1,0
0,8
0,6
0,4
0,2
00 0,02 0,04 0,06 0,08
0,10
Tm* [m
2
KW
-1
]
9 Minimum recommended slope is 15° (to ensure efcient self-cleaning and minimise snow pressure).
Installations in locations liable to frequent snow and hail, and installations on at roofs in locations subject to strong winds
are not recommended (see "Static load" on page 11).
3 TECHNICAL SPECIFICATIONS

6
GENERAL INFORMATION
COLLECTOR WIND AND SNOW LOADING CHART
(Calculated for standard, zone 1 wind loads and snow loads)
Installation
height above
ground (m)
Site’s wind
exposure
Mass in kg to secure collector
against lifting by wind Altitude
(m.a.s.l.)
Total load on roof from wind
and snow loads and collector
weight (kg)
At angle of
45°
At angle of
20°
At angle of
45°
At angle of
20°
CSV 25 R
0-10 low 60 40 100 424 546
10-20 low 80 50 250 595 773
0-10 medium 80 70 100 396 510
10-20 medium 90 80 250 533 691
CSV 35 R
0-10 low 90 80 100 599 771
10-20 low 110 100 250 841 1093
0-10 medium 110 100 100 561 720
10-20 medium 130 120 250 753 976
9 These specications are purely indicative. The entire structure must be inspected by an expert in static loading in compliance
with applicable standards.

7
GENERAL INFORMATION
Connections
The diagram below illustrates the connections between solar collectors in lines.
The ttings are available as accessories to be ordered separately.
collector
temperature sensor
to heat
exchange circuit
from heat
exchange circuit
union
olive
olive
ring nut
ring nut
union
olive
olive
ring nut
union
olive
olive ring nut
stub pipe
stub pipe stub pipe
Collectors in the same line must be connected so that the heat transfer uid ows through them in series.
Lines of solar collectors can be connected either in series (provided each line contains no more than 6 collectors) or in parallel. The
complete circuit must always be hydraulically balanced. See the following sample layouts.
Two lines in series Two lines in parallel
T T
4 CONNECTIONS

8
GENERAL INFORMATION
Water circuit
3
11
°C
M
4
4
4
9
8
11
10
13
14
2
6
12
Valve group
SOLAR
CONTROLLER
17
7
5
15
16
18
19
R M
1 Solar collector
2 Storage cylinder
3 Collector probe
4 Disconnect valves
5 Non-return valve
6 Temperature gauge
7 Vent valve
8 Safety valve
9 Pressure gauge
10 Drain
11 Expansion vessel
12 Pump
13 Flow regulator
14 Flow meter
15 Vent cock
16 Manual bleed valve (accessory)
17 Storage cylinder bottom temperature sensor
18 Storage cylinder top temperature sensor
19 Heat transfer uid recovery
MCollector outlet
RCollector return
9 Connect no more than 6 collectors in series.
9 We recommend the use of stainless steel pipes specially
made for solar collectors for the outlet, return and probe
pipes. The probe cable should be of the shielded type.
9 Do not use plastic or multistrate pipes. Operating tempera-
ture can exceed 180°C.
9 Pipe lagging must be able to resist high temperatures
(180°C).
5 WATER CIRCUIT

9
GENERAL INFORMATION
Pressure drop in solar collectors
PRESSURE DROP (mbar)
700
800
900
600
500
400
300
200
100
0
0 1000 2000 3000 4000 5000 6000
FLOW RATE (l/h)
_______ CSV 25 R
_ _ _ _ CSV 35 R
Diameter of connection pipes for a specic ow rate of 30 lt/m2h
Total surface area (m2)2 - 4 6 - 12 14 - 20
Diameter of copper pipe (mm) 10 - 12 14 18
Diameter of steel pipe (inch) 3/8" - 1/2" 1/2" 3/4"

10
INSTALLATION
Unpacking the product
6 UNPACKING THE PRODUCT
The solar collectors are packed in various ways depending on
the number of units supplied:
AIn a pack of 1
BPackages of 5 collectors
Pallet contents:
−collector
−documentation envelope containing certicate of war-
ranty and label with bar code.
9 Keep the front of the packaging and use it to shade the glass
tubes before the system is started up.
If the solar collectors are not going to be put into operation
immediately, and there is any risk of their being exposed
to rain, do not use the packaging to shade them as it is not
water-proof.
9 The instruction manual is an integral part of the solar con-
nector. Once located, read it thoroughly and keep it safe.
A
B
Handling
Once you have removed the outer packaging, proceed as follows
to unpack and handle the solar collector:
−Remove the PVC wrapping to free the solar collector from
the pallet
−Tilt the solar collector slightly and grip it at the four points
shown (A) to lift it.
−Use a hoist or other suitable lifting equipment to hoist
the solar collector on to the roof.
9 Wear suitable personal protective equipment and use suit-
able safety devices.
0 Do not dispose of packaging material into the environment,
or leave it within the reach of children, since it can become
a potential hazard. Dispose of packaging material in com-
pliance with applicable legislation.
0 Do not lift the solar collector by its water ttings.
A
A
A
A
7 HANDLING
Installation