Solastat Solastat-plus User manual

SolaStat-Plus

Installation Guide.

ISO9001

Z495

TECHNOLOGY

& QUALITY

19.01-1

SolaStat-Plus Installation Guide Index.

Description, Ordering and Specifications.

Index page 2

Features page 3

Introduction page 3

Ordering Information. page 3

SolaStat-Plus Users Guide.

Principle of Operation. page 4

Pump Timer. page 4

20 DegC Lockout. page 4

Sensor Diagnostics. page 4

Smart Shutdown: page 4

Pump Override. page 4

HWC Override. page 5

Test. page 5

Display Panel Description. page 5

Optional System Enhancements. page 5

SolaStat-Plus SystemAdjustable Values. page 6

Installer Details. page 6

SolaStat-Plus Safety Instructions.

General Safety Instructions. page 7

Installation Precautions. page 7

Electrical Precautions. page 7

Permanent Wiring. page 7

Hot Water Cylinders with Over Temperature Cutout. page 7

SolaStat Plus Mounting.

Where to mount the SolaStat-Plus. page 8

Mounting the SolaStat-Plus. page 8

Mounting the Sensors. page 8

SolaStat-Plus Operation.

Connect the Pump. page 9

Basic SolaStat-Plus-1 Installation. page 9

Basic SolaStat-Plus-2 Installation. page 9

Power Up. page 10

SolaStat-Plus Programming.

SolaStat-Plus Programming. page 10

SolaStat-Plus Programming Table. page 12

SolaStat-Plus Pump ON / Pump OFF Adjustable Range. page 12

Notes on SolaStat-Plus Programming. page 12

SolaStat-Plus-2 HWC Control Flow Chart. page 13

Examples and Explanation of the HWC 4 Modes of Operation. page 14

Explanation of the HWC 4 Adjustment Values. page 14

SolaStat-Plus Sensor Maintenance.

Lengthening SolaStat-Plus Sensor Wire. page 16

Replacing a SolaStat-Plus Sensor. page 16

SolaStat-Plus Sensor Resistance Table page 16

SolaStat-Plus Specifications and Limit of Liability. page 17

SolaStat-Plus Trouble-shooting Guide. page 18

SolaStat-Plus Plumbing Issues.

Disclaimer. page 19

Introduction. page 19

Solar Hot Water Specifics. page 19

Tempering valve. page 19

Non return valve. page 19

Pressure relief valves. page 19

Air Relief Valves. page 19

Cavitation. page 19

19.01-2

SolaStat-Plus.

Solar Hot Water Controller.

Features.

·Intelligent Heat Extraction From Solar Water Panels.

·Large 20mm Soft Green Digital LED Display c/w 8 Status Lights.

·High Quality, Efficiency, Reliability and +/-1C Accuracy.

·Stainless Steel, Water Resistant Temperature Sensors.

·Pre-wired with Mains Plugs and Sockets, no Electrician Required.

·Pre-Programmed to Customer’s Specification at No Extra Cost.

·All Values and Functions Installer Adjustable.

·Access Code Protected Front Panel Programming.

·Sensor Diagnostics and Smart Shutdown.

·Frost Protection Prevents Panels Freezing.

·Over Temperature Protection (Topout) for Ceramic Tap

and Ceramic Lined Hot Water Cylinders.

·Pump Timer for Pump Cavitation Recovery Option.

·Easy to Install with External Mounting Holes.

·Complies with Safety & EMC standards.

·Enclosure and cables UV resistant.

·Water Resistant and Rear Cable Entry Options.

·1HP (750W) Relay Std.

Introduction.

SolaStat-Plus is Easy to Use with the advanced generation of smart, microprocessor based Differential

Solar Hot Water Controllers. The SolaStat-Plus is easy to install, easy to use, easy to programme and

visually appealing.

SolaStat-Plus hasAdvanced Functions andtakesthebasics of differentialcontrol,frostprotection,topout

and add to these sensor diagnostics, smart shutdown, comprehensive status displays, digital temperature

display, with the options of pump timer for pump cavitation recovery, digital communications, remote dis-

play units, SolaData PC graphic datalogging and energy calculating software and smart control of the hot

water booster element for dramatically improved energy efficiency.

ICM (Instrumentation Control Manufacturing Ltd) has experience in designing and manufacturing Solar

Hot Water Controllers to Industrial Electronic Standards for over 15 years. This has earned ICM a reputa-

tion for Quality, Accuracy, Efficiency and Reliability.

Ordering Information.

SolaStat-Plus-1 Standard; 1 x 1hp Relay, Pump Timer On, Digital Display, 8 Status Lights,

2m Inlet Sensor, 2m Tank Sensor, 10m Panel Sensor, 2m Mains Cable and Pump Outlet.

SolaStat-Plus-2 Standard; 2 x 1hp Relay, Pump Timer On, Digital Display, 8 Status Lights,

2mInlet Sensor,2mTankSensor, 10m PanelSensor, 2m MainsCable, Pump andHWC Outlets.

SolaStat-Plus - - - - Adjustable Value Specify adjustable values as required.

Rly PT PS

Quality Assurance Programme.

Themoderntechnologyandstrict proceduresoftheISO9001Quality AssuranceProgrammeappliedduring

design, development, production and final inspection grant the long term reliability of the instrument.

Z495

ISO9001

TECHNOLOGY

& QUALITY

19.01-3

*Functional with Dual Relay version only. Set to ‘OFF’ for Single Relay Version.

Adedicated swimming pool controller is available; SolaStat-Pool. It has a 2hp Relay and Pump Timer is Off.

High temperature silicon sensor cable, water resistant enclosure, and rear cable entry options are available.

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SolaStat Models Include:

SolaStat-Eco: Controller c/w 4 Status Lights

SolaStat-Plus: Controller c/w Display.

SolaStat-Pool: Pool Controller c/w Display.

SolaStat-Rmt: Remote Display.

SolaStat-Rly: Slave Relay for HWC Control.

SolaData: PC Datalogging & Comms.

19.01-4

SolaStat-Plus Users Guide.

Your SolaStat-Plus has a microcomputer at its core that intelligently and automatically controls your solar

hot water system at greater efficiency. The SolaStat-Plus measures water temperatures at three different

places in the system and turns on a water pump at the optimum time. The pump moves hot water from the

solar collector into the hot water tank.

The SolaStat-Plus-2 (with the addition of the SolaStat-Rly) allows intelligent control of the electric element

used in the hot water tank (HWC control). The SolaStat-Plus-2 can prevent the electric element coming on

for a programmed time interval when Solar Hot Water is already being transferred into the hot water tank

(Holdoff Timer). While making sure you don’t run out of hot water (Reheat) and being vigilant that safe

waterconditionsaremaintained(BioSafe).Thesecontrolsshouldsaveaconsiderableamountofelectricity.

The SolaStat-Plus has advanced features that protect the system from damage, run self diagnostics, self

correction of some problems and will keep you informed as to what the SolaStat-Plus is measuring and

what decisions it is making.

Principle of operation.

The solar hot water collector sensor is called: ‘ROOF’

The upper hot water tank sensor is called: ‘TANK’

The lower hot water tank sensor is called: ‘INLET’

The SolaStat-Plus is a differential solar hot water controller. The controller measures the temperature at the

‘ROOF’ sensor and compares this to the ‘Inlet’ sensor. If the difference between the roof and the inlet is

greater than the programmed upper limit (typically 12C) then the pump turns on and transfers heated water

from the solar collector to the tank and replaces this with cooler water from the bottom of the tank. When

this happens the tank heats up and the collector tends to cool down. The heat difference is reduced to a

point where the lower limit (typically 6C) is reached and the pump turns off. This cycle repeats as long as

the sun shines and there is a difference in temperature, the tank heats up progressively this way.

There is a huge amount of energy in sunshine, as high as 1000 Watts per square metre. This can lead to

water temperatures present in the hot water tank beyond what it is designed to handle (close to boiling).

This is especially true of ‘ceramic’ lined tanks. Also pressure can build which can cause other plumbing

problems. To protect the hot water tank and stop pressure problems a maximum temperature can be set

called ‘TOPOUT’. This will prevent the pump from moving any more water from the collector until the tank

has cooled to a safe level.

To protect the solar collector from freezing in mild frost areas the ‘FROST’function can be enabled. This will

turn the pump on to move a small amount of water through the collector. Heavy frost areas may need other

solutions such as glycol based systems or drain down.

The SolaStat-Plus has other special features to those mentioned above.

·Pump Timer: This is an optional factory setting to assist in pump cavitation recovery.After the pump

has run continuously for approximately ten minutes, it will turn off for one minute. This cycle is repeated as

long as the pump is required to run and will not affect normal operation in a standard hot water collector and

cylinder installation.The one minute turn off period helps any accumulated air to escape from the pump and

has been effective as a backup in exceptional conditions. This feature can help prevent the pump running

for hours in a ‘locked up’state, increasing the installation reliability.Also refer ‘Plumbing Issues, Cavitation’

·20 DegC lockout: If the collector is less than 20C it will not contribute any useful heat, even to cold

water. Therefore the controller will not turn the pump on under differential conditions (‘frost’ protection still

works).

·Sensor diagnostics: The SolaStat-Plus constantly checks the sensors. If a sensor is below -20C the

display reads ‘Lo’. If a sensor is above 140C the display reads ‘Hi’. If the roof sensor reads ‘Hi’, the pump is

disabled. If a sensor is outside the specified temperature range of -40C to 150C then the Display reads

‘SSd’ and the controller enters Smart Shutdown mode. When the display reads ‘SSd’the sensor has either

a steady light for a temperature above 150C (possibly shorted sensor or wire) or a flashing light for a

temperature below -40C (possibly open sensor or broken wire). For example if the ‘Roof’ sensor wire is cut

during some building work then the SolaStat-Plus display reads ‘SSd’, the ‘Roof’ light flashes and the

controller enters Smart Shutdown mode until the wire is repaired.

·Smart Shutdown (SSd): In Smart Shutdown mode, the Display reads ‘SSd’ and the pump is dis-

abledexceptfor‘Frost’protectionwhen the Roofsensorisworking.During Smart ShutdownfortheSolaStat-

Plus-2, the HWC output is activated and the Hot Water Tank Temperature will be controlled by the Hot

Water Tank Thermostat for the electric element.

·Pump override: For added flexibility you can make the pump operate manually. The pump will turn

on as long as the ‘Pump’ button is held down unless of course the pump is already on in normal operation.

·The ‘PWR’ light on indicates that power is being applied to the unit.

·‘ROOF’, ‘TANK’ and ‘INLET’lights will be on to indicate which temperature is being displayed. Only 1

of the 3 can be on in normal operation. If more than 1 of these lights are on then it is in Smart Shutdown

mode and ‘SSd’ will be on the display.

·The ‘PUMP’ light will be on when the pump is on. The exception to this is, if the Pump Timer is on a

1minute recovery cycle, the light will be on but the pump will not be running during that minute. (see ‘Pump

Timer’ explanation on previous page).

·The ‘HWC’light indicates the hot water storage tank’s electric element status. (SolaStat-Plus-2 Only).

·If the HWC light is off, there is no power on the electric element.

·If the light is on, the HWC control is no longer in ‘Holdoff Timer’ and is maintaining the

temperature at a preset value called the ‘Reheat Upper’ value referred to as Thermostat Mode.

·The light slowly flashing (once a second) means the hot water tank has become too cold and is

now heating up (Reheat).

·The light quickly flashing (3 times a second) means there might soon be a risk of biological

contamination of the water so the tank is heating up to minimize the risk (BioSafe).

·‘TOPOUT’ light on indicates the value stored as the maximum allowable hot water tank temperature

has been reached. If lit the pump will be disabled until the temperature drops at least 2C lower.

The ‘FROST’ light comes on when the value stored for the onset of a frost condition has been detected

on the solar collector. To stop the collector freezing and bursting, the pump will come on just enough to raise

the temperature of the collector by 2C. Only a small amount of warm water is needed to protect the collector.

·The ‘PUMP’ button will turn the pump on as long as the button is held down, unless of course the

pump is already on in normal operation.

·For SolaStat-Plus-2, pressing the ‘HWC’ button will manually initiate a reheat of the Hot Water Tank.

However if Reheat Mode is active, pressing the ‘HWC’ button will turn off reheat of the Hot Water Tank.

Refer examples and explanation of ‘Reheat Adjustable Values’ for more information. For SolaStat-Plus-1

pressing the ‘HWC’ button will flash the HWC light but has no effect on unit operation.

·The ‘NEXT’button will step from Roof to Tank to Inlet and the display will show the relevant tempera-

ture in C. If a sensor is below -20C the display reads ‘Lo’. If a sensor is above 140C the display reads ‘Hi’.

If a sensor is outside the specified temperature range of -40C to 150C then the Display will read ‘SSd’ and

the ‘NEXT’ button is disabled.

·The ‘TEST’ button will check the system (all lights flash) then display the number of times the pump

has been on. This count will reset and start again after ‘999’.

Optional System Enhancements.

SolaStat-Rmt A remote display which repeats the display information of the SolaStat-Plus.

SolaStat-Rly An external Slave Relay Module for HWC control.

SolaData A data comms option that will send what the SolaStat-Plus is doing to your PC and

visually present the information with graphs, logic states and status information.

SolaStat-Plus Users Guide, Cont.

·HWC Override: For SolaStat-Plus-2, pressing the ‘HWC’ button will manually initiate a reheat of the

Hot Water Tank. However if Reheat Mode is active, pressing the ‘HWC’ button will turn off reheat of the Hot

WaterTank.Refer examplesandexplanationof‘ReheatAdjustableValues’formoreinformation. ForSolaStat-

Plus-1 pressing the ‘HWC’ button will flash the HWC light but has no effect on unit operation.

·Test: Briefly pressing this button will cause all the lights to flash on for 3 seconds then display for 3

seconds the number of times the SolaStat-Plus has operated the pump.This count will reset and start again

after ‘999’.

SolaStat-Plus Display Panel Description.

19.01-5

19.01-6

SolaStat-Plus System Adjustable Values.

Installer to fill in at installation time or after any change in program Adjustable Values.

*Functional with SolaStat-Plus-2 only.

Notes.

1. Pump ON must always be higher than Pump OFF.

2. Reheat upper must always be higher than Reheat lower.

3. A disabled value is indicated by ‘OFF‘

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Installer Details.

Contact: ................................................................................................

Phone: ................................................................................................

Address: ................................................................................................

................................................................................................

SolaStat-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 SolaStat-Plus solar 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 solar hot water regulations).

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 sensors correctly can lead to a poorly controlled solar hot water system with safety

issues like overheating and over pressure damage to the plumbing and hot water tank and freezing

damage to the solar hot water collector.

6. Alteration of installer level program values outside those recommended values by ICM 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 solar 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. A readily accessible disconnect device, overcurrent device and RCD Protection rated to suit the size

of the pump plus 5VA must be incorporated in the power supply wiring. The overcurrent device for a

1500W, 240Vac pump must not exceed 10Amps.

3. It is recommended that sensor leads be kept 300mm away from mains and comms cables.

4. Do not use mains power extension cords unless approved by the manufacturer. Water resistant plugs

and sockets should be used.

5. The SolaStat-Plus controlled outputs (PUMP and HWC) are connected to the input power supply

wiring and are not isolated from it. Supply voltages will be output through that outlet during activation.

The HWC outlet is labelled ‘AUX’.

6. Always usewithinspecifiedvoltage andloadranges.Neverusewith damaged leads,plugsorsockets.

7. Do not allow the sensor cables to come within 10mm of the high voltage connectors or components

inside the enclosure.

8. The HWC output must be 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 SolaStat-Plus from the HWC circuit.

This will also ensure any remote hot water electric element control (eg Ripple Control) is still maintained.

Notes on Permanent Wiring.

Permanent wiring of the SolaStat-Plus-2 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 SolaStat-Plus from the controlled wiring and do not bypass the controlled wiring. The recom-

mended 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 ICM or any of it’s authorised agents for

permanent wiring installations. For permanent wiring the maximum load of the element and pump must be

less than 16Amps @ 25C (Typ 3kW Max Element).

Notes on Hot Water Cylinders with Over Temperature Cutout.

Some standard electric element hot water tanks have an overtemperature cutout fitted to remove power in

the event of a thermostat failure. The temperature this is set to can typically range from 75C to 95C which

is adequate for electric element heating safety. However in solar hot water systems this temperature can be

exceeded and the overtemperature cutout may activate turning the electric element off. The cutout needs

to be manually reset by a qualified electrician. In these installations it may be necessary to modify the

electrics in a manner approved by the hot water tank manufacturer or set the topout adjustable value to a

temperature lower than the overtemperature cutout.

CAUTION: Dangerous Voltages may be present. The SolaStat has no user serviceable parts.

Protective enclosure only to be opened by qualified personnel.

Remove ALL power sources before removing protective cover.

19.01-7

SolaStat-Plus Mounting.

Where to mount the SolaStat-Plus.

1. Against a flat vertical surface with sufficient strength to hold the enclosure and any additional weight

from the plugs, sockets and cables.

2. Power leads must be facing directly down, not sideways or up.

3. Safe for users to inspect.

4. The display can be easily read and buttons accessed.

5. Allow for cable runs, location of power outlets and lengths of wires.

6. Allow space for SolaStat-Rly if used to control the hot water tank electric element.

Mounting the SolaStat-Plus.

1. There is no need to open the enclosure during a standard installation.

2. Allow for the enclosure dropping 5mm from screw centres once mounted (keyhole mounting system).

3. Place drill guide template against wall, checking for level alignment. 4 screws are supplied, 2 are chip

board screws and 2 are combination Gib/ wood screws. It is recommended that all 4 mounting holes

are used with at least 2 firmly secured into wood. The outer plastic Gib anchors will self tap into Gib

board and their inner metal screws fix into the centre of the plastic anchors.

4. Mark anddrill/screw asappropriateleavingtheheadsofthe screwsabovethe surfacebyapproximately

3mm.

5. Place unit over the 4 screw heads, unit should slide down 5mm into the ‘key’ slots and become

secured to the wall. You will need to adjust screw height to obtain a secure fit.

Mounting the Sensors.

This is Critical to the Success of the Installation.

The sensors are the only way the SolaStat-Plus can efficiently control and protect the system.

1. The 10m ROOF Sensor. (Labelled ‘ROOF SENSOR’ - Solar Collector.)

The ‘ROOF’ sensor is best fitted into a metal immersion ‘pocket’ just inside the solar collectorin the

hot water outlet pipe. Liberally apply heat transfer compound between the sensor and the lining of the

‘pocket’. Sensor should be sealed with neutral cure sealant and externally lagged, also the cable

should be insulated from the bare pipe. Heat transfer compound is available from your distributor or

ICM ltd.

2. The 2m TANK Sensor. (Labelled ‘TANK SENSOR’ - HWC Upper.)

The ‘TANK’ sensor is best fitted into a metal immersion ‘pocket’ in the upper region of the HWC. For

the SolaStat-Plus-2 the position of the Tank sensor will vary the amount of water in the HWC that will

be controlled at the required temperature.As an example for a 300l vertical tank mounting the sensor

1/3 of the way down from the top of the HWC will give about 100l of water that is heated within the

controlparameters.This increasesefficiency asonlytheamount ofwaterrequiredin normal household

useis controlledratherthanallthewaterin the HWC. The sensor must be mounted abovetheelectric

element. If Topout is required caution should be exercised to allow for stratification of hot water in the

tank. ForTopoutAdjustable Value we recommend a conservative value somewhat lower than the hot

water tank manufacturers maximum temperature. Liberally apply heat transfer compound between

the sensor and the lining of the ‘pocket’. If a ‘pocket’ is not available then bond the sensor against the

metal wall of the tank (not the outside cladding or insulation) using thermal transfer compound

between the tank and sensor.

3. The 2m INLET Sensor. (Labelled ‘INLET SENSOR’ - HWC Lower.)

The ‘INLET’sensor is mounted as per the ‘TANK’ sensor only this time it is mounted near the bottom

of the hot water tank.

Warning.

1. Removing or cutting the cladding may void hot water tank warranty.

2. Sensors must not be immersed in water.

3. It is recommended that sensor leads be kept 300mm away from mains and comms cables.

4. Ensure the correct sensors are mounted in the correct place.

5. Failure to properly mount the ‘Tank’ and ‘Inlet’ sensors as prescribed above can result in;

a. The system may not operate at greatest efficiency.

b. There may be inaccurate ‘Topout’ sensing. HWC or other components may get damaged.

c. There may be inaccurate ‘BioSafe’ sensing. For dangers refer to BioSafe Adjustment Value.

d. Hot water readings on the display may be misleading.

6. Failure to correctly mount the ‘Roof’ sensor as prescribed above can result in;

a. The s ystem may not operate at greatest efficiency.

b. Failure to detect Frost conditions. Panel can burst.

c. Hot water readings on the display may be misleading.

Warning:

These products are not designed for use in, and should not be used for patient connected applications. in

any critical installation an independent fail-safe back-up system must always be implemented.

19.01-8

SolaStat-Plus Operation.

Connect the Pump.

Plug in the pump to the ‘PUMP’ socket on the SolaStat-Plus. This should be the correct type of pump for

domestic solar hot water circulation and not exceed the horse power (hp) rating as specified on the label on

the side of the enclosure.

Connect the HWC output. (SolaStat-Plus-2 Only.)

Note: This Requires the use of the SolaStat-Rly slave relay module.

Plug in the SolaStat-Rly to the ‘HWC’ socket on the SolaStat-Plus labeled ‘AUX’ on the enclosure.

Basic SolaStat-Plus-1 Installation.

The SolaStat-1 controlling the Solar Collector circulating pump.

19.01-9

Note. These diagrams are only to be used as a general guide and not all the required components are

shown.Eachinstallation needs tobecustomisedtosuit its situation.Alwaysusebestplumbing and electrical

practices, and comply to any regulatory requirements.

Basic SolaStat-Plus-2 Installation.

The SolaStat-2 controlling the Solar Collector circulating pump and the SolaStat-Rly Relay Module.

INSULATION

COLD FLOW TO PANEL

TANK SENSOR

HOT WATER OUT

DIFFERENTIAL CONTROLLER

INLET SENSOR

ROOF SENSOR

TEMPERATURE/PRESSURE

TEMPERING

VALVE

KEY: = WATER FLOW.

RELEASE VALVE

COLD WATER INLET

SOLAR COLLECTOR

COLD WATER IN

RECIRCULATING PUMP

HEATING

HWC

ELEMENT

ELECTRIC

HOT RETURN

NON-RETURN

VALVE

AIR

VENT

VALVE

FROM PANEL

INSULATION

PRE-WIRED

SOLASTAT-RLY

PLUGS &

SOLASTAT-PLUS-2

THERMOSTAT

TURNED TO MAX

LEADS

SWITCH

NEUT

EARTH Phase (Brown)

to HWC Switch

Phase (Brown)

to Element

WIRES TO HWC

MUST BE HIGH

TEMPERATURE TYPE

30A MAX

240Vac

INSULATION

COLD FLOW TO PANEL

TANK SENSOR

HOT WATER OUT

DIFFERENTIAL CONTROLLER

INLET SENSOR

ROOF SENSOR

TEMPERATURE/PRESSURE

TEMPERING

VALVE

KEY: = WATER FLOW.

RELEASE VALVE

COLD WATER INLET

SOLAR COLLECTOR

COLD WATER IN

RECIRCULATING PUMP

HOT RETURN

NON-RETURN

VALVE

AIR

VENT

VALVE

FROM PANEL

INSULATION

PRE-WIRED

PLUGS &

SOLASTAT-PLUS-1

LEADS

SolaStat-Plus Power Up.

Before you connect the power;

1. Read safety instructions, warnings and limit of liability before proceeding.

2. Complete all the installation and securely mount the SolaStat-Plus.

3. Power outlet socket to be installed by a qualified electrician.

4. SolaStat-Rly to be installed by qualified person.

5. Ensure suitable over-current protection and RCD Protection for the SolaStat-Plus and pump is in

place.

6. There is no water, metal shavings or other electrical hazards to contaminate the plug, socket and

surrounding environment.

7. For the SolaStat-Plus-2 Only. The Hot Water Thermostat for the Electric Element MUST be installed

and MUST be set higher than the temperature of the HWC BioSafe and Reheat adjustable values for

the HWC Control Modes to operate correctly. The Hot Water Thermostat for the Electric Element is

only used as a fail safe feature and in normal operation will never operate. We recommend setting

the Hot Water Thermostat to the Maximum Temperature. Refer to the Trouble Shooting Guide for

errors that can be caused by incorrect Hot Water Thermostat settings.

Only then;

Plug it in and turn it on.

What You Should See.

The first thing you should see after power up is;

1. A digital readout of the ‘TANK’ temperature in degrees Celsius.

2. On the left the ‘PWR’ light and the ‘TANK’ light should be on.

3. On the right the lights will be on depending on how the solar hot water system is operating.

The pump operation can be tested by pressing the ‘PUMP’button. This will turn the pump on as long as the

button is held down, unless of course the pump is already on in normal operation.

The SolaStat-Plus is now installed and should be working. It would be best to observe some solar hot water

pump cycles but this will rely on the sun shining. Check all functions are working correctly before leaving

the installation.

Note 1. See User Guide for explanation of display and status lights.

Note 2. See “Trouble shooting” section if system not working correctly.

Note on BioSafe After Power-up.

When the SolaStat-Plus is turned on either for the first time or after a power failure the BioSafe 24 hour

timer starts from power up (unless the temperature in the tank is greater than the BioSafe Temperature)

and the Holdoff Timer will start from the next pump activation. All timers are approximate only.

SolaStat-Plus Programming.

If the Adjustable Values from the factory are inappropriate for the installation (see included document

stating programmed values) then the unit needs to be programmed.

The programming access code is for distributor or installer use only, as using incorrect Adjustable Values

can cause inefficiencies in the system or cause damage to the system voiding the warranty.

Once new values are ‘stored’they are permanently written into memory and will be retained when power is

removed.

19.01-10

SolaStat-Plus Programming Cont.

Note: Immediately after reprogramming please fill out the ‘Installation Adjustable Values’ in the ‘System

Adjustable Values’ table in the user guide. (Page 6.)

These instructions refer to the small yellow letters/words under the buttons on the SolaStat-Plus.

1. Enter the installer programming access code. Available from distributors.

2. Every 10 seconds the characters ‘PRG’ will flash on the display indicating programming mode.

3. The ‘PUMP’ light will be flashing to indicate the number being displayed is the ‘Pump OFF’ value.

4. The ‘Pump OFF’ can be adjusted using the ‘+’ and ‘-‘.