Mitsubishi Electric Hydrobox EHSC Series Installation Manual page 16

4
Installation
Water Circulation Pump Characteristics
Pump speed can be selected by main remote controller setting (see <Figure 4.3.4
to 4.3.9>).
Adjust the pump speed setting so that the flow rate in the primary circuit is appropri-
ate for the outdoor unit installed (see Table 4.3.1). It may be necessary to add an
additional pump to the system depending on the length and lift of the primary circuit.
For outdoor unit model not listed in the <Table 4.3.1>, refer to Water flow rate
range in the specification table of outdoor unit Data Book. In such case, make sure
that the flow rate is greater than 5.0 L/min and less than 36.9 L/min.
<Second pump >
If a second pump is required for the installation please read the following carefully.
If a second pump is used in the system it can be positioned in 2 ways.
The position of the pump influences which terminal of the FTC the signal cable
should be wired to. If the additional pump(s) have current greater than 1A please
use appropriate relay. Pump signal cable can either be wired to TBO.1 1-2 or
CNP1 but NOT both.
Option 1 (Space heating/cooling only)
en
If the second pump is being used for the heating circuit only then the signal cable
should be wired to TBO.1 terminals 3 and 4 (OUT2). In this position the pump can
be run at a different speed to the hydrobox's in-built pump.
Option 2 (Primary circuit DHW and space heating/cooling)
If the second pump is being used in the primary circuit between the hydrobox and
the outdoor unit (Package system ONLY) then the signal cable should be wired to
TBO.1 terminals 1 and 2 (OUT1). In this position the pump speed MUST match
the speed of the hydrobox's in-built pump.
Note: Refer to 5.2 Connecting inputs/outputs.
Water Circulation Pump Characteristics
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0
15
EHPX series
Speed 5 (Default setting)
Speed 4
Speed 3
Speed 2
Speed 1
Flow rate [L/min]
<Figure 4.3.4>
ERSD series
Speed 5 (Default setting)
Speed 4
Speed 3
Speed 2
Speed 1
Flow rate [L/min]
<Figure 4.3.6>
EHSD series
Speed 5 (Default setting)
Speed 4
Speed 3
Speed 2
Speed 1
Flow rate [L/min]
<Figure 4.3.8>
Outdoor heat pump unit
Packaged model PUHZ-WM85
PUHZ-WM112
Split model SUZ-SWM40
SUZ-SWM60
SUZ-SWM80
PUHZ-SW50
PUHZ-FRP71
PUHZ-SW75
PUHZ-SW100
PUHZ-SW120
PUHZ-SHW80
PUHZ-SHW112
PUHZ-SHW140
PUMY-P112
PUMY-P125
PUMY-P140
<Table 4.3.1>
* If the water flow rate is less than the minimum flow rate setting of the flow
sensor(default 5.0L/min),, the flow rate error will be activated.
If the water flow rate exceeds 36.9 L/min, the flow speed will be greater than 2.0
m/s, which could erode the pipes.
ERSC series
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0
Flow rate [L/min]
<Figure 4.3.5>
EHSC series
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0
Flow rate [L/min]
<Figure 4.3.7>
E*SE series
140.0
120.0
100.0
80.0
60.0
40.0
20.0
0.0
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0
Flow rate [L/min]
<Figure 4.3.9>
Water flow rate range [L/min]
10.0 - 25.8
14.4 - 32.1
6.5 - 11.4
7.2 - 17.2
7.8 - 21.5
7.1 - 17.2
11.5 - 22.9
10.2 - 22.9
14.4 - 32.1
20.1 - 36.9
10.2 - 22.9
14.4 - 32.1
17.9 - 36.9
17.9 - 35.8
17.9 - 35.8
17.9 - 35.8
Speed 5 (Default setting)
Speed 4
Speed 3
Speed 2
Speed 1
Speed 5 (Default setting)
Speed 4
Speed 3
Speed 2
Speed 1
Speed 5 (Default setting)
Speed 4
Speed 3
Speed 2
Speed 1