Panasonic Aquarea Tank Duo GH 200 Design, Installation & Servicing Instructions page 10

INSTALLATION
Aquarea Duo Cylinder Selection Guide
Number of bathrooms
Number of
bedrooms and shower rooms
1-3 1 bathroom
1 bathroom +
2-3
1 shower room
1 bathroom +
2-3
2 shower rooms
2 bathrooms +
2-4
1 shower room
2 bathrooms +
2-4
2 shower rooms
2 bathrooms +
3-5
2 shower rooms
1 - Flow rates in various units for comparison with heat pump manufacturers data
m /h 0.50 0.75
3
l/min 8.33 12.50 16.67 20.83 25.00 29.17 33.33 37.50 41.67 45.83 50.00 54.17 58.33 62.50 66.67 70.83
l/sec or kg/s 0.14 0.21
2 - Velocity in pipe (limited to 1 m/s maximum) for pipe sizing
m/s in 22mm 0.37 0.55
m/s in 28mm 0.23 0.34
m/s in 35mm 0.14 0.22
m/s in 42mm 0.10 0.15
3 - Operating power of heat exchanger suitable for cylinder based on a 5 degree temperature difference
kW @ 5K dt 3-4 4-6
200HP
300HP
4 - Pressure loss (bar) for each flow rate above in the available coil combinations
200HP 0.017 0.040 0.074 0.118 0.173 0.239 0.316 0.405 0.505 0.617 0.741 0.877 1.025 1.184 1.356 1.540
300HP 0.008 0.019 0.036 0.058 0.086 0.120 0.160 0.206 0.259 0.318 0.384 0.457 0.536 0.623 0.716 0.816
Aquarea Duo cylinder/Heat Pump Selection Guide
The table above can be used to match heat pumps to heat pump cylinders.
To use, first obtain the maximum flow rate from the heat pump manufacture's
instructions, match this to the flow rates in section 1 and follow this flow rate's column
down through the other sections.
Section 2 shows the velocity in the pipe work of different diameters at this flow rate. A
maximum flow velocity of 1m/s has been chosen to limit flow noise. Use this section to
choose the correct pipe diameter.
INSTALLATION
Suggested model size (litres)
Aquarea Duo cylinder/Heat Pump Selection Guide
1.00 1.25 1.50 1.75
0.28 0.35 0.42 0.49
0.73 0.91 - -
0.45 0.56 0.68 0.79
0.29 0.36 0.43 0.51
0.20 0.25 0.30 0.35
5.5-8 7-10 8-12 10-14 11-16 13-18 14-20 16-22 17-24 18-26 20-28 21-30 23-32 24-34
Model Selection
The suggested model sizes shown in the table
opposite are based on a typical daily hot water
usage and on the assumption that the heat
200
pump will heat the domestic hot water to about
50°C. For higher specification, an increase of one
200
model size should be considered.
200
When sizing the hot water cylinder, please use
MCS guidelines in MIS3005 and also refer to BS
300
EN 806:1-5 AND BS EN 8558.
300
300
2.00 2.25 2.50 2.75
0.56 0.63 0.69 0.76
- - - -
0.90 - - -
0.58 0.65 0.72 0.79
0.40 0.45 0.50 0.55
- - -
Section 3 shows the maximum operating power
of the coils in the cylinder. Shaded squares show
the range of operating powers suitable for a
cylinder in either of its set ups.
Section 4 shows the pressure loss across the
coils at this flow rate for all cylinders in both
configurations.
Page 10
3.00 3.25 3.50 3.75
0.83 0.90 0.97 1.04
- - - -
- - - -
0.87 0.94 - -
0.60 0.65 0.70 0.75
- - - -
- - -
4.00 4.25
1.11 1.18
- -
- -
- -
0.80 0.85
- -
- -