Sunamo UniQ Dual 12, Reference Manual, Page: 6 / 25

Page 5 of 24
UNIQ HEAT BATTERIES REFERENCE MANUAL_V2.3
2. Technical Specifications
The standard models of the Sunamp heat batteries are supplied with PCM58 and these heat batteries can be used with
any heat source which can run at flow temperature greater than 65
o
C. The discharge temperature from these standard
heat battery models will be between 52 and 55
o
C.
The overall dimensions and weights of the heat battery models in the UniQ range are listed in table 2.1 and their technical
specification is listed in table 2.2. The pressure loss characteristics of the heat batteries are tabulated in tables 2.3a, 2.3b,
2.3d, 2.3e. The standard and optional equipment supplied with the heat batteries is listed in table 2.4.
Table 2.1. Overall dimensions and weights of UniQ heat battery range
Overall dimensions [mm] Weight [1]
Width Depth Height [kg]
UniQ HW 3, UniQ Heat 3, UniQ Dual 3 365 575 410 55
UniQ HW 6, UniQ Heat 6, UniQ Dual 6 365 575 605 105
UniQ HW 9, UniQ Heat 9, UniQ Dual 9 365 575 815 155
UniQ HW 12, UniQ Heat 12, UniQ Dual 12 365 575 1,025 205
UniQ HW 3+i, UniQ HW 3+iPV, UniQ eHW 3, UniQ dPV 3 365 575 455 61
UniQ HW 6+i, UniQ HW 6+iPV, UniQ eHW 6, UniQ eDual 6 365 575 650 111
UniQ HW 9+i, UniQ HW 9+iPV, UniQ eHW 9, UniQ eDual 9 365 575 860 161
UniQ HW 12+i, UniQ HW 12+iPV, UniQ eHW 12 365 575 1,070 211
[1] The PCM in standard heat batteries has a phase transition temperature of 58 o C
Table 2.2: Technical specification of UniQ heat battery range
Size 3 Size 6 Size 9 Size 12
Storage capacity – Standard batteries with PCM58
[1]
[kWh] 3.5 7.0 10.5 14.0
Water content – Low power circuit (LPC) [3]
Water content – High power circuit (HPC)
[4]
[L]
[L] 1.30
2.24 2.36
4.48 3.46
6.76 4.56
9.04
Equivalent hot water cylinder size
[5]
[L] 71 142 212 284
V
40
, Volume of hot water available at 40
o
C
[6]
[L] 85 185 300 370
•
Heat loss rate
•
Heat loss rate
•
ErP Rating class – Hot water storage vessel
[kWh/24h]
[W]
[ - ] 0.449
18.7
A +
0.649
27.0
A +
0.738
30.7
A +
0.809
33.7
A +
Recommended maximum HW flow rate [L/min] 6 15 20 25
Minimum cold water supply pressure at inlet to the heat battery [bar]
[MPa] 1.00
0.10 1.50
0.15 1.50
0.15 1.50
0.15
Maximum working pressure:
High power (HPC) and Low power (LPC) circuits [bar]
[MPa] 10.0
1.0
10.0
1.0
10.0
1.0
10.0
1.0
Pressure loss characteristics (See tables 2.3)
▪
K
V
Value for the Low power circuit (LPC)
▪
K
V
Value for the High power circuit (HPC)
[ - ]
[ - ]
1.623
2.871 1.255
2.356 1.066
1.951 0.963
1.451
Minimum heat source flow temperature
[7]
[
o
C] 65 65 65 65
Maximum heat source flow temperature
[8]
[
o
C] 85 85 85 85
Hot water outlet temperature at design flow rate [9] [ o C] 50 - 55 50 - 55 50 - 55 50 - 55
Heat battery controller
•
CC power supply rating at 230V, AC, 50Hz [10]
•
Electric heater supply rating at 230V, AC, 50Hz [11]
•
Standby power consumption – All models
•
Power rating of the heater at 230V, AC, 50Hz (‘e’ models only)
[A]
[A]
[W]
[W]
6
16
7
2,800
6
16
7
2,800
6
16
7
2,800
6
32
7
2,800
Notes – Table 2.2
1) Batteries operating as hot water heaters. Charged to 75
o
C and then discharged using mains cold water at 10
o
C until the hot water outlet
temperature dropped to 40 o C.
2) Batteries operating as hot water heaters. Charged to 55 o C and then discharged using mains cold water at 10 o C until the hot water outlet
temperature dropped to 40 o C.
3) For UniQ HW and UniQ HW+I heat batteries, the low power circuit (LPC) is connected to external heat source e.g. a boiler.
4) For UniQ HW and UniQ HW+I heat batteries, the high power circuit (HPC) is connected to the mains cold water supply for producing hot water.