HPAK SYSTEM COMPONENTS OVERVIEW
9
S O L A R H O T W A T E R
1.6.7. 3-Speed Pump Operation
The DHW and collector circulation pumps are identical bronze volute pumps; they come prewired, set at speed 2. Depending on
Gobi surface area installed, the speed may need to be adjusted by rotating the red knob to desired speed. Use Table 1.6.7.-1 for
pipe size, collector surface and speed reference. Table 1.6.7.-2 shows the pump performance.
UPS 15-58 Cil2 Power Ratings:
Speed 1: 55 Watts
Speed 2: 65 Watts
Speed 3: 75 Watts
1.6.5. Solar Control and HPAK electrical
THE ELECTRICAL INSTALLATION SHOULD BE PERFORMED BY AN AUTHORIZED PROFESSIONAL. FOLLOW ALL LOCAL REGULATIONS AND
CODES WHEN INSTALLING WIRE, FUSES, GROUNDING, ETC. PROTECT THE HPAK FROM OVERCURRENT. BEFORE ANY ELECTRICAL WORK
IS DONE, ENSURE THE HPAK LINE CORD IS DISCONNECTED FROM THE ELECTRICAL SOURCE.
Both the HPAK 000 and 001 come with the basic internal electrical wiring already completed. For simple DHW operation, the
installer only needs to plug in the HPAK line cord into a nearby 120 VAC, 60 Hz grounded wall outlet and wire the storage and
collector sensor appropriately. The control comes prewired with two sensor lines. Use 22 AWG or larger cable if the sensor lines
need to be extended. Connect the sensors to wire using non-metal wirenuts, or other corrosion resistant connection method. Ensure
the control high limit is set at or below the tank manufacturer’s recommended limit.
If attaching additional sensors or wiring, such as for the Pro models, remove the top cover for the electrical box and make the
appropriate connections. See the Delta-T or Delta-T Pro manual for controller installation.
1.6.6. Flow Sensor: 001 Models
The HPAK pro models come with a digital vortex flow and temperature sensor preinstalled and wired to the Delta-T pro control. No
adjustment is necessary. See the Delta-T Pro Manual for in-depth explanation.
25
26
24
5
5
47
Table 1.6.7.-1: HPAK Piping Recommendations
HPAK HEAT EXCHANGER
016
024
032
048
Recommended Flow Rate (GPM)
3
4
6
9
Max Gobi Surface Area (Ft
2
)
96
144
192
288
Recommended Pump Speed
1
2
2
3
Max Piping Resistance (Ft H
2
0)
2
5
6
7
Item
Numbers
Figure 1.6.7.-1: Grundfos UPS 15-58 CiL2 Pump
16
18
6
8
10
12
14
0
2
4
0
2
4
6
8
10
12
14
40
50
60
70
80
40
0
2
4
6
8
10
12
14
Table 1.6.7.-2: UPS 15-58 CiL2 Performance
Q [US GPM]
SPEED
H [ft]
P [W]
