AlphaStat-Plus Safety Instructions and Limit of Liability.
Read safety instructions and limit of liability before proceeding with the installation.
General Safety Instructions.
1. This installation guide is for the installation of AlphaStat-Plus hot water controllers only and is not an
installation guide for any other part.
2. The complete installation should be checked at least annually for damage or malfunction.
3. All servicing to be carried out by an authorised service agent only.
4. All aspects of the installation must comply with local electrical and plumbing regulations (and any
special hot water regulations).
5. The installation must have a Tempering Valve Installed as temperatures higher than 60C can be set.
6. Adjustable values must not be set higher than 70C for Glass Lined Hot Water Cylinders.
Installation Precautions.
1. Must be installed away from water sources such as rain, leaking pipes, or wet floors and must not be
installed in damp areas like bathrooms.
2. Must be installed away from direct sunlight, flammable liquids or radiant heat sources.
3. Power leads must be facing directly down, not sideways or upwards.
4. Must be in a safe environment for users to inspect display panel.
5. Failure to mount sensor correctly can lead to a poorly controlled hot water system with safety
issues like overheating and over pressure damage to the plumbing and hot water tank.
6. Alteration of installer level program values outside those recommended values by SolaStat and other
parts suppliers (especially hot water tank manufacturer’s maximum recommended temperature) can
lead to dangerous conditions and/ or damage to parts of the hot water system.
Electrical Precautions.
1. All mains voltage electrical work to be carried out by a qualified electrician, especially external power
outlet socket installation.
2. It is recommended that sensor leads be kept 300mm away from mains and comms cables.
3. Do not use mains power extension cords unless approved by the manufacturer. Water resistant plugs
and sockets should be used.
4. The AlphaStat-Plus controlled output (HWC) is connected to the input power supply wiring and is not
isolated from it. Supply voltages will be output through that outlet during activation. (The HWC outlet
is labelled ‘PUMP OUT’’ on the printed circuit board.)
5. Always use within specified voltage and load ranges. Never use with damaged leads, plugs or sockets.
6. Do not allow the sensor cable to come within 10mm of the high voltage connectors or components
inside the enclosure.
7. The HWC output is normally used in conjunction with a SolaStat-Rly. This is due to the high power
levels used by hot water electric elements, and completely isolates the AlphaStat-Plus from the
HWC circuit.
This will also ensure any remote hot water electric element control (eg Ripple Control) will
not remove power to the AlphaStat. When used with the mains cable supplied the total current must not
exceed 10A maximum.
Notes on Permanent Wiring.
Permanent wiring of the AlphaStat-Plus directly to the HWC electric element is possible (no SolaStat-Rly).
However Electricity Suppliers may remotely turn off the HWC element using controlled wiring. Do not
power the AlphaStat-Plus from the controlled wiring and do not bypass the controlled wiring. The
recommended method is to use the SolaStat-Rly. This is a high power relay and connects between the
controlled wiring and the HWC element. NO liability will be accepted by Senztek NZ Ltd or any of it’s
authorised agents for permanent wiring installations. For permanent wiring the maximum load of the element
must be less than 16Amps @ 25C (Typ 3kW Max Element).
CAUTION: Dangerous Voltages may be present. The AlphaStat has no user serviceable parts.
Protective enclosure only to be opened by qualified personnel.
Remove ALL power sources before removing protective cover.
19.08-7
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