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3

Alpha SolarSmart 100 - User Instructions

The boiler domestic hot water ther

mostat 

must 

always be set to the maxim

um setting. A label has been supplied which should 

have been positioned adjacent to the domestic hot w

ater thermostat knob

, as shown in Fig.

 2, to ensure the maximum setting is 

maintained.

Fig. 2

WORKING PRINCIP

AL - Fig. 3

The solar 

collector uses 

the energy 

of the 

natural 

light to 

heat the 

water 

being circulated 

around the 

collector. When 

the heated 

water 

enters the 

drain 

back 

unit, heat 

is tr

ansfer 

into the 

stored w

ater via 

a heat 

exchanger

. Stored 

domestic hot 

water 

is pumped 

from the bottom of the solar cylinder through the drain bac

k unit heat exchanger where it is heated and retur

ned to the cylinder.

When a hot water tap is tur

ned on mains water flo

ws into the bottom of the solar cylinder and hot water flo

ws out of the top 

tow

ards the boiler. If the boiler inlet sensor detects that the w

ater from the cylinder is above 60°C the w

ater flows directly through 

the boiler to the tap, if the temper

ature is less than 60°C the boiler heats up the water

. When the flo

w is less than 60°C the water 

temperature is maintained b

y the boiler.

As the temperature of the w

ater entering the boiler is higher than the nor

mal incoming mains water

, less gas is required to heat 

the water to the set temper

ature of above 60°C thereb

y saving energy costs

.

Fig. 3

OPERATION OF 

THE SOLARSMART SYSTEM - Fig.

 3

When the controls detect a collector sensor temperature that is at least 10°C higher than the lo

wer cylinder sensor and the solar 

cylinder temperature is less than 65°C

, the drain bac

k unit pump will start to circulate w

ater around the collector. At the same 

time that the drain bac

k unit pump starts the cylinder pump will star

t at 16% full speed to circulate the cylinder water through 

the drain bac

k unit heat exchanger

. The dr

ain back unit pump will stop when the temper

ature difference betw

een the collector 

sensor and the low

er cylinder sensor falls to 3.5°C or the cylinder temper

ature reaches 70°C. The cylinder pump will contin

ue to 

run f

or 120 seconds to collect any e

xcess heat from the drain bac

k unit then it will also stop.

When the pumps are operating, a flashing pump symbol will be visib

le in the display (Fig.

 1). If a f

ault occurs, a f

ault code will be 

visible in the displa

y.

POSITIONING OF THE COLLECT

OR

SYSTEM OPERATION

The solar 

energy supplied 

by 

a system 

var

ies with 

the or

ientation and 

tilt of 

the collector

, which 

will usually 

be deter

mined by 

the existing 

roof. Ho

wev

er, the 

predicted var

iation is 

slight. F

or a 

collector facing 

anywhere 

between 

SE and 

SW 

and tilted 

between 

15° and 

75° from 

the horiz

ontal

, the annual solar energy supplied will be at least 90% of that obtained at the optim

um collector position 

 (South at 30°).

It should be remembered that shading from trees, b

uildings etc., can produce a significant decrease in system perfor

mance, and 

collectors should be positioned to minimise shading from the sun.

bar

0

4

3

2

2.5

3.5

1.5

0.5

1

CORRECT PRESSURE

WHEN COLD

RESET

INFO

RESET

BOOST

bar

°C

x100rpm

IMPORTANT

MUST

This Combi boiler is fitted to an

Alpha Solar system and the domestic

hot water thermostat

always be

set at maximum

Cold water inlet

Cold water to DBU

Alpha InT ec boiler

Warm water

to boiler inlet

Cold water supply if using

thermostatic mixing valve

Hot water

to taps

Thermostic

mixing valve

Hot water from DBU

Solar cylinder

(case not shown)

Drain back unit

(DBU)

Solar

collector

Collector

sensor

DBU pump

DBU heat

exchanger

Cylinder sensors

Control unit

Drain

point

System pump

T emperature/pressure

relief valve

Inlet sensor

Pressure

relief

valve

Summary of Contents for SolarSmart 100

Page 1: ...ions have been carefully prepared but we reserve the right to alter the specification at any time in the interest of product improvement Alpha Therm Limited 2014 Part No 1 032744 ST15 000233 0314 D337...

Page 2: ...emedial or improvement work identified during the course of commissioning or servicing work Refer to the manufacturer s helpline where assistance is needed Report product faults and concerns to the ma...

Page 3: ...t of the Environment i e Approved Document L1 Building Standards Scotland Consolidation Regulations issued by the Scottish Development Department UK Water Regulations Byelaws Scotland Health Safety Do...

Page 4: ...ction Return Connection Max Working Pressure Heat Exchanger Content Collector Circuit Flow Connection Return Connection Max Working Pressure Vessel Size Max Filled Content Case Insulation 2 2 SOLAR CO...

Page 5: ...Energy Loss of Solar Cylinder Global Warming Potential Ozone Depletion Potential Insulation Blowing Agent The collector installation must be carried out using the kits and connections supplied by Alp...

Page 6: ...e 11 Expansion vessel 12 Immersion heater boss use Alpha immersion kit only 13 Drain point for cylinder 14 Pressure relief valve 15 Inlet filter 16 Pressure reducing valve 17 Tundish 18 Isolation valv...

Page 7: ...e in 15 mm copper pipe and be as short as possible Where possible the pipework should be insulated to reduce heat loss Thoroughly flush out the mains water supply pipe before connecting it to the boil...

Page 8: ...is 9 m Subtract the resistance for four 22 mm elbows of 0 8 m each 3 2 m Therefore the maximum permitted length equates to 9 3 2 5 8 m 5 8 m is less than the actual length of 7 m therefore calculate...

Page 9: ...itch or cylinder control utilizing mains electricity The bottom of the solar cylinder must be located within 6 metres vertically of the top of the drain back unit Dimensions The dimensions of the cyli...

Page 10: ...to the DBU The pipework must be insulated with high temperature insulation Dimensions The dimensions of the DBU and clearances required for servicing are shown in Fig 5 Fig 5 DBU Connections A Return...

Page 11: ...g from the sun One solar collector is required upto a maximum of two collectors can be installed using one of the following methods a Integration of the collector into the tiles of a pitched roof Usin...

Page 12: ...ctor is fixed at an inclination of 30 and ballast or fixings must be used to secure the frame in the required position Refer to Fig 9 for details of location of the drain back unit in relation to the...

Page 13: ...3 023223 b Twin collectors portrait or landscape Part No 3 023241 8 Solar collect On Slates kits a Single collector portrait or landscape Part No 3 023224 b Twin collectors portrait or landscape Part...

Page 14: ...the template includes the minimum clearances required and mark the positions of the fixing holes Drill the holes to suit the fixing supplied or alternative fixings suitable for the mounting surface w...

Page 15: ...the fixing supplied or alternative fixings suitable for the mounting surface wall If using only the top fixings fit two of the screws supplied with the heads about 5 mm proud so that they will locate...

Page 16: ...lastic caps are removed from all connections Note If soldering union bends ensure that the bends are not connected to the valves etc otherwise the internal seals may be damaged soldered connections ca...

Page 17: ...res to terminals 45 and 46 the polarity is not important on the terminal block Ensure that the cable is secured in the cable clamp 5 Connect the Mains Supply The solar cylinder has been fitted with a...

Page 18: ...tly installed and that all the terminal connections are tight Switch on the electrical supply and press the On Off button on the control panel see Fig 23 to start the system 6 Check for any leaks and...

Page 19: ...and S3 S3 is always the upper temperature on the display Button Description Description Function Function Symbol State Decription DBU pump Cylinder pump Warning Sun Degrees celsius Digits Temperature...

Page 20: ...ler hot water thermostat to be left at the maximum position No 9 and that it is the purpose of the label Fig 18 to maintain this and that the label must not be removed 5 Weekly cleaning of shower head...

Page 21: ...cylinder sensor and the solar cylinder temperature is less than 65 C the drain back unit pump will start to circulate water around the collector At the same time that the drain back unit pump starts...

Page 22: ...ended that it is inspected and checked by a competent person as necessary at regular intervals Warning Before removing any covers or working on the system isolate the electrical supply The data badge...

Page 23: ...scribed in Section 8 2 Disconnect the union from the bottom of the expansion vessel and remove the locknut see Fig 27 then carefully lift the vessel out Reassemble in reverse order with a new vessel a...

Page 24: ...taken when carrying out repairs to the DBU as it reaches very high temperatures and can emit steam from connections when being removed Isolate the mains electric supply and remove the front case of th...

Page 25: ...plug housing with another spanner to prevent damaging the pipe Expect about 8 litres Loosen the flow and return connections beneath the drain back unit and slacken the locknuts Disconnect the flow an...

Page 26: ...ctor has the correct fall and length Check the collector sensor and the lower cylinder sensor do they operate check sensor resistance in Section 10 3 Check the collector tubes are they blocked with di...

Page 27: ...INDER SENSOR TEMPERATURE and RESISTANCE DATA Temperature C 0 20 50 80 105 130 160 Resistance Ohm 20 Ohm 1000 1100 1200 1300 1400 1500 1600 Collector Sensor Resistance Table Temperature C 25 30 65 85 R...

Page 28: ...sembly Ref Description Qty Part No Solar Cylinder Assembly Note Washers and seals are not supplied with the replacement components and the relevant seals kit should also be used Ref Description Qty Pa...

Page 29: ...washers Complete seals kit all DBU seals washers Wall fixing pack plugs screws Collector sensor Collector sensor extension lead 1 2 3 4 5 6 7 8 1 1 1 2 1 1 1 2 1 1 1 1 1 1 026759 1 033644 1 033420 1 0...

Page 30: ...luid details What type make of heat transfer fluid used System volume litres What is the fluid mix Water Glycol Frost protection provided to C Is the installation in a hard water area above 200ppm Yes...

Page 31: ...mpleted YES NO Engineer Name Company Name Telephone Number Comments Signature Date Energy Efficiency Checklist completed YES NO Engineer Name Company Name Telephone Number Comments Signature Date Date...

Page 32: ...ed Kingdom What this warranty does not cover Free of charge repairs to appliances that have not been installed by a qualified and competent person Repairs to appliances that have not been installed an...

Page 33: ...ly failure the system will not operate When the supply is restored the system will return to normal operation If the mains water supply fails there will be no hot water from the taps 3 Pressure Relief...

Page 34: ...starts the cylinder pump will start at 16 full speed to circulate the cylinder water through the drain back unit heat exchanger The drain back unit pump will stop when the temperature difference betwe...

Page 35: ...isplay panel and push button controls The display indicates the working modes of the system with symbols to indicate the working components of the complete system 2 USER CONTROLS Fig 1 S1 S 2 3S S1 S...

Page 36: ...ully prepared but we reserve the right to alter the specification at any time in the interest of product improvement Alpha Therm Limited 2014 Part No 1 032744 ST15 000233 0314 D337 Alpha Therm Limited...

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