Waterco DigiHeat 18kW Installation And Operation Manual - page 2
Table of
Waterco Digiheat In Line Heaters
SAFETY INFORMATION ---------------------------------------------- 01
IMPORTANCE OF WATER CHEMISTRY ---------------------------- 01
ELECTRICAL & WIRING ---------------------------------------------- 02
HYDRAULICS & REQUIRED FLOW RATES ------------------------- 03
ADJUSTING THE PRESSURE SWITCH ----------------------------- 03
INSTALLATION -------------------------------------------------------- 04
THE TOUCHPAD ----------------------------------------------------- 05
OPERATING THE DigiHeat ------------------------------------------- 06
TEMPERATURE CALIBRATION (bias) ------------------------------- 07
LOSS OF POWER ---------------------------------------------------- 07
EMPTYING THE SPA ------------------------------------------------- 07
TROUBLESHOOTING ------------------------------------------------ 08
SPECIFICATIONS ----------------------------------------------------- 09
WARRANTY ----------------------------------------------------------- 09
SAFETY INFORMATION
• TheelectricalwiringmustbepermanentlyhardwiredbyQualifiedElectricianinaccordancewith
all local wiring rules.
• Aresidualcurrentdevice(RCD)havingaratedresidualoperatingnotexceeding30mAshouldbe
fittedtothisappliance.
• TheDigiHeatunithaslivewiringwithintheunitandmustnotbeaccessibletoapersonwithin
thespaorpool.Remotetemperaturecontrollerswithlowvoltagenotexceeding12Vmaybe
positioned near the spa or pool.
• TheDigiHeatmustbecorrectlyearthed.
• Theinstallationshouldbecarriedoutinaccordancetolocalsafetystandardsandbylaws.
• Theusershouldensuretheinstallationhasbeencarriedoutbyasuitablyqualifiedpersonand
that these instructions have been carefully read and followed. Incorrectly installed equipment
may fail, causing severe injury, death or property damage
• This appliance is not intended for use by persons with reduced physical, sensory or mental
capabilities,orlackofexperienceandknowledge;unlesstheyareundersupervisionorinstruction
concerning the use of the appliance by a person responsible for their safety.
• Topreventtheriskofinjuryordeathdonotpermitchildrentousethisappliance.
• Donotallowanyonetositinthespaorpoolifthewatertemperatureisgreaterthan38°C/100°F
(normal body temperature). Hyperthermia may result.
• Intheinterestsofpersonalhealth,itisadvisedpersonsshouldnottostayinthespaformore
than twenty (20) minutes at a time.
• Intheeventofdefectiveoperationorfaultpleaseensurethattheunitisturnedofffromthepower
mains and contact your nearest authorised service agent.
• EnsureALLvalvesareopenbeforeturningONpowertothepumpandtheDigiheat.
IMPORTANCE OF WATER CHEMISTRY
The DigiHeat has been carefully designed to withstand the harsh environment of a spa system,
and non metallic materials are used extensively. Where metals parts are used however such as
heater elements it is important that the water is chemically balanced to ensure that the water is
not corrosive or scale forming. Waterco will not be responsible for damage caused be corrosion or
scaling.
The chemical balance of water is a relationship between its pH, total alkalinity, calcium hardness
and temperature. Your professional pool or spa shop can test the water to ensure it is chemically
balancedinaccordancewiththeLangelierSaturationIndex.
The water must be maintained at all times as per the following:
pH level
: between 7.2 & 7.8.
total alkalinity
: between 80 & 150ppm.
calcium hardness
: between 150 & 300ppm.
AndwithinthesetolerancestobebalancedtotheLangelierSaturationIndexwithinarangeof:
-0.2 to +0.2
I pg 01