COMBI2 XC /WC
MULTI-HEAT ENERGY BUFFER WITH 1 FIX COIL AND TANK IN TANK CALORIFIER - COMBI 2
Capacity
COMBI2 XC
STAINLESS STEEL 316L
D.H.W.STORAGE
COMBI2 WC
POLYWARM®
D.H.W.STORAGE
Heating
water
volume (V1)
DHW
volume
(V2)
DHW
surface
(V2)
Lower fix coil
volume
Lower fix coil
Weight
surface
[liters]
ART. NR.
ART. NR.
[liters]
[liters]
[m2]
[liters]
[m2]
[Kg]
600
3270162284151
3270162284101
388
146
1,3
18
2,8
131
800
3270162284152
3270162284102
582
191
1,6
20
3,1
160
1000
3270162284153
3270162284103
681
226
1,8
24
3,7
184
1500
--
3270162284104
952
412
2,5
32
4,9
267
2000
--
3270162284105
1345
566
3,1
35
5,4
336
PROMPT DELIVERY
Grey highlighted products are
dispatched in 1-5 working days.
(Delivery time excluded)
Product
component
of a complete Sun
Solution Solar Thermal
System
Please refer Sun Solution
Cordivari catalogue
Stainless Steel 316L
BUFFER TANK (V1)
CONNECTIONS
Heating return/To Generator 1"1/2 Gas F
2
Connection for instrumentation 1/2" Gas F
4
Fix lower heat exchanger inlet 1" Gas F
5
Connection for instrumentation 1/2" Gas F
6-7
Heating return/To Generator 1"1/2 Gas F
8
Fix heat exchanger outlet 1" Gas F
9
Connection for electrical immersion 1"1/2 Gas F
Connection for instrumentation 1/2" Gas F
12-13
Heating return/To 2nd Generator/ Heating
Delivery 1"1/2 Gas F
15
Connection for instrumentation 1/2" Gas F
17
P.E.D. product planned and produced in conformity to the article 3.3 of directive 92/23/CE
19
Tmax
Pmax
Tmax
Pmax
Tmax
3 bar
99°C
6 bar
95°C
6 bar
90°C
12 bar
110°C
De
Df
(24)
H12 (16)
(17) (18)
H11 (15)
H9 (12) (13)
H8 (10)
Heating delivery / From Generator 1"1/2 Gas F
Domestic Cold Water Circuit Inlet 3/4" Gas F
21
Domestic Cold Water Circuit Outlet 3/4" Gas F
22
Recirculation 3/4” Gas F
23
Connection for instrumentation 1/2" Gas F
24
Chain magnesium anode
V2
H7 (9)
Connection for instrumentation 1/2" Gas F
20
EXCHANGER
Pmax
(19)
(20)
(23)
H6 (8)
H4 (5)
(21)
(2) (5) (9)
(10) (15) (17)
Application
Production and Storage of hot water (heating) and sanitary water.
Used to improve flexibility of pellets, stoves and burners.
Technical descriptions
Multi-Heat Energy tanks Combi2 are used in units with a typically
discontinuous energy source for double use: heating system and
sanitary hot water system.
Material
The carbon steel buffer is connected with the heating system and
does not need any corrosion proofing.
V1
H5 (6) (7)
(22)
(24)
(1) (6)
(12) (16)
H
16-18
D.H.W. TANK (V2)
Tmax
A
10
D.H.W. TANK (V2)
Pmax
BUFFER TANKS
1-3
Polywarm®
(3) (7)
(13) (18)
H3 (4)
H2 (1) (2) (3)
0
(4) (8)
The inside sanitary tank can be either Stainless Steel Inox 316L
or Polywarm®, both suitable for drinking water according to D.
M. n.174 del 06.04.04
Heat exchanger
1 fixed carbon steel heat exchanger
Insulation
100 mm soft polyester fibre with high Thermal insulation with
Thermal conductivity: 0.035 W/mK. Fire resistance class B-s2d0
according to EN 13501.
Grey PVC external lining complete with top and flange cover.
Cathode protection
The special shape of the new chain magnesium anode allows to
check the real consumption of the magnesium bar also in low ceiling
technician rooms.
Warranty
Buffer 2 years
DHW Tank (V2) (either Stainless Steel or Polywarm®) 5 years
See general sales conditions and warranty
Note: During installation always take care to fill first tank V2 (DHW) before tank V1 (Buffer).
In working operating condition avoid that the pressure of the buffer exceed the one of the DHW more than 1,5 bar.
Capacity
Df
De
H
A
H2
H3
H4
H5
H6
H7
H8
H9
H11
H12
600
650
850
1920
1945
247
260
582
800
790
990
1890
1925
265
695
855
915
1060
1144
1382
1593
278
584
690
762
823
988
1115
1332
1000
790
990
2180
2210
1541
265
284
656
787
953
1013
1188
1309
1588
1500
950
1150
2300
1831
2345
313
336
736
845
1006
1061
1286
1377
1653
2000
1100
1300
2370
1909
2430
347
370
770
879
1001
1060
1300
1411
1687
1943
[liters]
[mm]
57
COMBI 1 - 2 - 3 D.H.W. HEAT EXCHANGER TECHNICAL PERFORMANCES
COMPLETE HEATED STORAGE VOLUME
Capacity
Heating
Water
Volume V1
DHW
Volume V2
DHW
exchanger
surface
Max sanitary water produced from
10°C to 45°C with storage at 65°C
and boiler on
[lt]
[lt]
[lt]
[m2]
[lt/min]
600
406
146
1,3
3,0
800
602
191
1,6
3,5
1000
706
226
1,8
4,1
1500
984
412
2,5
5,6
2000
1380
566
3,1
6,8
UPPER PART HEATED STORAGE VOLUME
Max sanitary water
produced from 10°C to 45°C with
storage at 65°C and boiler off
Max sanitary water produced from
10°C to 45°C with storage at 65°C
and boiler on
[lt]
[lt/min]
10 lt/min: 239 lt
25 lt/min: 213 lt
10 lt/min: 320 lt
25 lt/min: 280 lt
10 lt/min: 389 lt
25 lt/min: 330 lt
10 lt/min: 753 lt
25 lt/min: 614 lt
10 lt/min: 1083 lt
25 lt/min: 852 lt
Max sanitary water
produced from 10°C to 45°C with
storage at 65°C and boiler off
[lt]
10 lt/min: 179 lt
25 lt/min: 160 lt
10 lt/min: 240 lt
25 lt/min: 210 lt
10 lt/min: 291 lt
25 lt/min: 250 lt
10 lt/min: 565 lt
25 lt/min: 461 lt
10 lt/min: 812 lt
25 lt/min: 639 lt
1,86
2,17
2,26
3,36
4,08
POWERS OF FIXED HEAT EXCHANGERS FOR COMBI 2 AND COMBI 3
Thermal output is given in both KW or kcal/h in terms of average temperature difference between primary and secondary circuit, all for a range of primary 3 m3/h. For example, a
Combi2 of 1000 liters Capacity with a water flow of 3 m3/h at 80 °C inlet and outlet at 70 °C, has on the storage of water an average temperature of 60 °C, the mean difference of
temperature will be (80 +70) / 20-60 = 15 °C and therefore you can exchange up to approximately 32 KW.
Output of the lower heat exchangers COMBI 2 e 3 depending on the average DeltaT between primary and accumulation considering (considering
flow rate at 3 m3/h)
120
2000
80000
1500
Output [KW]
80
1000
60000
60
800
600
40000
40
Output [KCal/h]
100
20000
20
0
0
0
5
10
15
20
25
30
35
Average Delta T [°C]
Output of the upper heat exchangers COMBI 3 depending on the average Delta T between primary and accumulation (considering flow
rate at 3 m3/h)
80
2000
70000
70
1500
60000
60
1000
50
50000
800
40
40000
600
30000
30
20000
20
10000
10
0
0
0
5
10
15
20
25
Average Delta T [°C]
59
30
35
Output [KCal/h]
Output [KW]
90
BUFFER TANKS
100000