The final price will depend on the type of roof, ease of installation, travel costs.
General installation costs are not included in the kit price.
Please contact the approved installers for a free and more specific quotation.
The Kit Includes:
- PV Panels
- Geyserobot Digital Display
- Wires and Connectors
No, the Geyserobot switches off when the set geyser temperature is reached.
This also reduces water spillage in a country where water is becoming scarce.
Although we recommend "Bi-Facial High Voltage panels", all PV panels will work if you connect them correctly ie. correct voltage and amps.
For 2kW elements: Volts should be larger than Amps x25.
For 3kW elements: Volts should be larger than Amps x17.
For 4kW elements: Volts should be larger than Amps x12.
This is not always possible, however you can get close.
For example if you have 4x 275W PVs which is rated Vmp=31, Imp=8.9.
Connecting all in series gives: Vmp=124, Imp=8.9.
And using a 3kW element: 17xImp(8.9A) = 151 Volt.
Thus for optimal performance we would like to have a 5th PV, but 4 Panels are 82% of the recommended voltage, and accepting that most of the time your panels will only perform up to about 80% of Max due to dust in the air etc, this setup is good enough in the real world.
Yes, but use at own risk.
For a 150Liter geyser with three users, we recommend 3 x 275W for 50% saving on your geyser as required by Municipalities.
It largely depends on your climate and water usage needs. Major Cities in South Africa can expect the following solar yields:
fiber_manual_record JHB: 5.65 Hours
fiber_manual_record CPT: 5.21 Hours
fiber_manual_record DBN: 4.71 Hours
Thus 1kW of panels in JHB installed optimally will produce 5.65kWh/day on average anually.
And according to ESKOM statistics, ±50% of your home usage is geyser.
Therefore in JHB, if your home uses a total of 11.3kWh/day on average, then 1kW of panels would be suficcient for your geyser.
No, this installation uses a standard household geyser with no additional pipes for water or anti-freeze circulation needed.
This is purely an electrical installation, with the Geyserobot connecting to your geyser.
Yes, but use at own risk.
The Geyserobot only stores energy as heat (hot water) in the geyser.
Using additional power is possible, assuming that you have more PV panels connected than your hot water needs require.
The Geyserobot is not designed to charge batteries therefore you will need an external battery charger, preferably one with MPPT functionality.
Note that during poor sunshine periods less sun-harvested power will be available for additional use and batteries will most probably damage during this time.
No, although we do get DC-power from the panels we convert it enough to feed it safely to the geyser - adhering to quality specifications.
Yes, this actually works very well. When two (or more) Robots run from the same PV bank, the user can set priorities to enable one geyser to heat up quicker than the other even though both geysers are drawing power simultaneously. When one geyser is warm enough to switch off, all available power is automatically diverted to the remaining geyser(s). The only caveat is that both geysers must be run from the same earth leakage circuit breaker.
Stay within 90-180Vdc input, and only 3kW element maximum. 150Vmp with a 3kW element is the recommended Maximum.
The Geyserobot does not output pure sine-wave, nor does it guarantee full load-power.
The household geyser is a special case, if the element requires for example 3 kW it will still function normally with less power available
The Geyserobot works together with a standard geyser, therefore anything that will affect a standard geyser applies here.
The only "maintenance" which does apply, is cleaning your solar PV panels from time to time.
Our kits use only certified PV panels from reputable manufacturers and therefore we are confident that the panels will be able to withstand almost anything you can through at it.
Yes, the Geyser Robot has been tested and is SANS approved.
- SANS 60669-1:2007
- SANS 60669-2-1:2009