TTI Pool Heat Pump User manual

POOL HEAT PUMP
OWNER’S MANUAL
INSTALLATION MANUAL
No : 2004.1
GENERATION MODEL ECLIPSE MODEL
READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR
USING YOUR NEW POOL HEAT PUMP.

TABLE OF CONTENTS
Introduction...............................................................................................p.3
ACost-EfficientHeater
How Does It Work?
LowMaintenance
Selecting the location.................................................................................................p.4
Supply andAccessibility
Other Recommendations for Spas
WaterInletandOutletConnections..............................................................p.5
Basic Connection
Chlorinators, Brominators and Other Automatic Systems
Pressure-Type Chlorinator or brominator
In-line Chlorinator or Brominator
Salt Chlorinator
Dual Units Connection
PoolandSpa Connection............................................................................p.8
Using One Pump and One Filter for the Pool and the Spa
Using Independent Pumps and Filters for the Pool and the Spa
ElectricalConnection..................................................................................p.9
Maintenance...........................................................................................p.10
Cleaning
Winterizing
Seasonal Start-up
Water Deviation
WaterMaintenance.....................................................................................p.13
Why Perform Water Maintenance?
Water Chemistry
Sanitizers
What to Do?
Swimming Pool Heat Pump Control.....................................................p.18
SolvingProblems........................................................................................p.24
QuestionsandAnswers.............................................................................p.25
Warranty..................................................................................................p.26

A Cost-efficient Heater
Your newpoolheatpumpwill helpyousavemoney comparedtoothertypesofpoolheat-
ers. In fact, even if your pool heat pump has a lower heat capacity which makes it run for 24
hoursaday,thepoolheatpump remainsthemosteconomicsystem, becauseoftheuseofstate
oftheart technicsinthermodynamics.
How Does It Work?
Yourpoolheatpumpworksjustasawaterpumpdoes. Whereasawaterpumpistranferring
waterfromoneplace toanother,your poolheatpumpis transferringheatbetweenthe surround-
ingairandyourpoolwater. Moreover,yourpoolheatpumpisnotproducingheatwith theenergy
it is consuming just as a water pump is not producing water. It is because of this principle that
yourpool heat pumpmay attain efficiencyratios going upto 600% or700% in thebest climatic
conditions. Thismeans thatfor each kilowattyour poolheater consumes,it istransfering 6or 7
kilowattsfromthesurrounding airtothe poolwater. Thedifferenceisastronomicalcomparedto
oil,gas or electricresistance heatersyielding only80 to95%output. But itis trueto saythatthe
outputof traditionalpool heatersstays constantat anyoutdoor climatic conditions whereas the
outputof apool heatpump varies. However, even whentemperatures arecooler thepool heat
pumpcontinuesto transferheat betweenair and waterand itstays thebestchoice fortempera-
turesdownto 5Celcius (41Fahrenheit) overnight.
Low Maintenance
Your pool heatpump is designedfor lower maintenanceat a lower cost. But ifyou want
yourpool tobeheated efficiently,youmustfollow theadvice supplied inthis manual.
INTRODUCTION
3

SELECTING THE LOCATION
The area you choose for your pool heat pump is very important. You must consider the
following.
Air Supply and Accessibility
Yourheat pumpuses thesurroundingair towork. It isveryimportantthatyou makesure
there is enough air circulation around the heat pump. Do not install the heat pump in a closed
space like a garden shed, a garage, or a basement.
Thetablebelowindicatestheminimumdistancefromtheheatpumpthatanyobjectshould
belocated.
Other Recommendations
Donotinstalltheheatpumpunderaroof. Doingthiswill protect theheatpumpfrombeing
buriedbysnow orreceiving heavyrainfall from theroof thatdoes nothavegutters.
Also,make sure thatthe digital controldoes not facethe sun. The controlwill not break
butits digital display will be more difficult to read.
Ifyouhaveanautomated sprinklersystemforyourlawn, makesurethattheheat pumpis
notshoweredby asprinkler.
The pool heat pump should be installed on a firm and leveled surface, preferably on a
concreteslabor somethingequivalent.
Keep in mind that the heat pump will cause condensation. Therefore water will be drip-
pingfromthe heatpump.
11
2
3
2
21
4
4
3
Generation (CP) Eclipse (MP)
(1) facing the coil surfaces 2 feet = 61 cm 2 feet = 61 cm
(2) facing other surfaces 10 inch = 25.4 cm 14 inch = 35.5 cm
(3) facing fan * 4 feet = 122 cm 4 feet = 122 cm
(4) facing service panel 2 feet = 61 cm or accessible 2 feet = 61 cm or accessible
* Objects should be placed as far as possible from where the air is discharged.
CP Model MP Model
4

WATER INLET AND OUTLET CONNECTIONS
For all Eclipse (MP) models, connection pipes are 1 1/2 inches in diameter. For all
Generation(CP) models, theconnection pipes are2 inches indiameter. For all the pool
heaters,we recommend(obligatory forthe Eclipse series)the installationof aset ofvalves
allowingto isolatethe poolheater from thefiltration systemwhen necessary. (Seethe drawing
below.) Moreover, youhaveto makesure thatyour poolheat pumpmay bedisconnected from
thepool pipeswithout havingto stopthe waterpump orwithout losinggreat quantitiesof water.
Toadjustthewaterflow goingthroughthepoolheater,pleaseadjusttheby-passvalve(a)
inthefollowingway:
MP30 - MP50 : 3/4 opened
MP70 : 1/2 opened
AllCP’s:Closed-the internalcalibratedvalve regulatesthewater flow, exception
for those who have a water pump of 2hp or greater, adjust the valve to obtain the flows listed
below.
If the previous settings are not respected, the pump or the pool heater may be over-
chargedandresult infailure ofyourequipement.
Your water pumpmust provide thequantity of waterindicated inthe table below. These
numbersmustbe usedfor eachpoolheat pumpinstalled. A flowmetermust beinstalled onthe
waterinletofthe poolheatertoknow theexactwaterflow. Caution:manyflowmeters requirea
longdistance ofstraight tubingon theinlet sideto offeran adequatemeasurement.
Foryourown security,andtoensureproper operationofthe unit,thewaterconnec-
tionmust beperformed by aqualified personas per allapplicable national,provin-
cial, state or local codes.
Minimum Ideal Maximum
Eclipse 15 GPM(US) 20-30 GPM(US) 50 GPM(US
)
Generation 25 GPM(US) 40-50 GPM(US) 65 GPM(US
)
Front View
W
ater Outlet
Water Inlet Setof valves a
a
GMP(US): Americangallons (3,78l)per minute
5

Pressure-type Chlorinator or Brominator
The pressure-type chlorinator or
brominatortakesa smallamountof waterfrom
theoutlet side of the filter,adds chemicalsto it
andreturnsthishighly concentratedsolutionto
the pool. The check valves must be highly re-
sistanttocorrosion. Useonlya check-valve ei-
thersuppliedorrecommended by thechlorina-
tor(brominator)manufacturer.
Thep-trapshouldbeinstalledhigherthan
the top of the chlorinator (brominator) to
preventmigration.
Check-valve
P-trap
Waterpump
Chlorinator
Filter
Check-valve
Anyautomaticdistribution systemofchemical products, chlorine,bromineor others,
mustbe installedafter theoutlet of waterfrom theheat pump. The warranty of the
heat pump will be voided for any installation that is not in accordance with
this rule.
Basic Connection
Thisconnectionmethodisstronglyrecommended
toenhancethe life-spanof yourpoolheat pump.
Ifyou connect the unitthis way, you haveto pour
chemicalsdirectly intothe poolor the spa,as faras pos-
siblefromthe watersupply point.
Do not pour chemicals in the skimmer or at the
bottomofthepool,if youhaveadrain,because of
thepossibilityof migrationof thechemicals tothe
heater.
6
Chlorinators, Brominators and Other Automatic Systems
Theuseofabrominatororachlorinatortendstolower pHandtotalalkalinitybecause
of the chemicals in it. If you use such a product, you must check the quality of the
water regularly. (Addition of sodium bicarbonate is recommended to restore the
balance.)(See thesection WaterMaintenance onp.12.)
Check-Valve
P-trap
Filter
Water pump

7
Dual Unit Connection
For some larger pools, it may be nec-
essary to install two units in parallel. In this
case, double the distances recommanded in
thetable 1of thepage 5. Neverplace twoMP
modelscoil againstcoil, fanagainst fanor coil
againstfan.
1,2and 3 : calibrated valves
4: filter
5: waterpump
6: flowmeters
5
34
2
1
6
6
Whentheaccess toa heat pumpis shutoff,the waterflow passing throughthis heat
pump will be redistributed among all others. Therefore, the valves mus be re-ad-
justedtomeet thewaterflow requirements.
Salt Chlorinator
In-line Chlorinator or Brominator
The in-line chlorinator or brominator
shouldbeinstalledonthepoolwaterreturnline,
betweentheheatpumpand the pool.Thistype
of chlorinator (brominator) should be installed
asfaraspossiblefrom theheatpump. Installa
check-valve between the heat pump and the
chlorinator(brominator).
Thep-trapshouldbeinstalledhigherthan
the top of the chlorinator (brominator) to
preventmigration.
P-trap Waterpump
Chlorinator
Filter
Check-valve
Saltchlorinators are madeto beinstalled likein-linechlorinators. Therefore, they must
be installed in accordance with the “In-line Chlorinator or Brominator” connection di-
rectives, else the warranty of the heat pump will be voided. (Seethe section “WaterMain-
tenance” on p.12 and the section «Salt Generated Chlorine» on p.15 for more information on
operatingsaltchlorinators.)

POOL AND SPACONNECTION
Using One Pump and One Filter for the Pool and the Spa
Aninstallationfeaturing asinglepumpand asinglefilter forthepool andthespa iseasier
and more economical. Using home automation, it is possible to always keep the pool and the
spatothedesired temperature. Otherwise,itisalways possibletohaveonly thedesiredsystem
functioningby positioningthevalves tohave thewater circulatingin thepool orinthe spa.
1) It is more difficult to maintain ideal levels of chemicals in the water when using a
single filter because this type of installation prevents the pool or the spa from being
filtered. Anindependent homeautomation system with automatic valvescan reduce
thisproblem,or youmust beveryassiduous inmaintenance.
2)Forthe poolheatpump toautomatically detecttheswitch overfrompool tospaand
viceversa, aflow switch mustbe added on the spaline.
Using Independent Pumps and Filters for the Pool and the Spa
Aninstallation featuringindependant pumps andfilters forthe pool andthe spais a little
more complicated and expensive. However, it is more advantageous because the pool or the
spaisnever leftwithoutfiltration. Wateristherefore easierto maintain.
1) For the pool heat pump to detect the change made either manually or by an
independantsystem, aflow switchmust beadded onthe spaline.
Waterpump
Filter
Flowswitch Manualor automatic3
waysvalve
Waterpumps
Filters
Flowswitch
Manualor automatic 3
waysvalve
Pool
Spa
Pool
Spa
Ballvalve 8

9
ELECTRICAL CONNECTION
Foryourown safety,andto ensureproperoperation oftheunit, theelectricalconnec-
tionsmust be performedby a qualified electrician asper all applicablenational, pro-
vincial,state orlocal electrical codes.
Ifthe supply cord is damaged,it must bereplaced by the manufacturer orits service
agent or a qualified electrician to avoid electrical shock.
Theidentification plateon theheat pump identifiesall voltagerequirements.
Abreaker must beinstalled near theheat pump in an accessiblearea.
Neveropenthe electricalboxwithout shutting offallpower sourcestothe heatpump.
If your heat pump features a water pump control option, do not forget to shut off the
breakerto thiswater pump.

10
MAINTENANCE
Beforeperforminganymaintenance ontheheatpump youmustturnoff thebreakerof
theelectricalsupply line.
Cleaning
Toensureoptimum performanceof theheatpump, followthese recommendations:
- Backwash the filter of the pool on a regular basis in order to ensure proper flow rate
throughthepoolheater;
-Keepthesurfaces of thecoilcleanand freeofanyobstructionsuch aspapers,leavesor
otherdebris;
- Carefully clean the unit using a soft, non abrasive and bleach free cleaner, and rinse
usingagardenhose withoutthenozzle;
- Check the drainage holes of the base of the unit to make sure that they are clean and
unobstructed. (Thispreventswaterfrom accumulatinginthe heatpump.)
Winterizing (Cupro-nickel heat exchanger)
Ifyouclosetheswimmingpoolduring thewinterseason, it isessentialtodrainthe unit in
order to prevent the formation of ice in the condenser (water section). To winterize the heat
pump,youmust:
1.Stopthe unit;
2.Shut offthebreaker ofthe heatpump electricalsupply line;
3.Disconnectthewater intletandoutlet connections (See “WaterDeviation”for details.);
4.Freelyflush thecondenser withtapwater.Completely drainthesystem usingair pres-
sure or vaccum system. We do not recommand putting anti-freeze into the heat pump
pipes,but ifyou chose toput some, make sure itis compatiblewith copper, otherwise, it
woulddo moredamage tothe condenser thansmall quantityof icewould;
5.If theheat pumpis leftoutsideduringwinter,protect itwith awaterproof cover.
Winterizing (Titanium heat exchanger)
Ifyouclosetheswimmingpoolduring thewinterseason, it isessentialtodrainthe unit in
order to prevent the formation of ice in the condenser (water section). To winterize the heat
pump,youmust:
1.Stopthe unit;
2.Shut offthebreaker ofthe heatpump electricalsupply line;
3.Loseen the bypassvalves (photo A)and letthe water drainout (See “WaterDeriva
tion”for details.);
4. Unscrew the small cap (photo B) with the help of two wrenches (photo C) and freely
flush the condenser with tap water. Completely drain the system using air pressure or
vaccumsystem.Store thesmallcap duringwinter.
5.Block the opening of eitherthe water inlet or outletpipe (photo D) with your hand and
blowairintothepipenotcoveredbyyourhandtoflushoutthewatercompletely.Iftheheat
pumpis leftoutsideduringwinter,cover itwith awaterproof cover.

A.
B.
C.
D.
Water inlet and outlet pipes
Brass cap
Loosen bypass valves
Unscrew brass cap
Winterizing (Titanium heat exchanger)
11

Seasonal Start-up
Beforestarting thepool heatpump forthe firsttime ofthe season, youmust :
1.Verifyandadjustthequality ofthepool water (seechapter"Water Maintenance" tofind
outabout theamount ofchemicals tobe usedin yourswimming pool);
2.Make sure thatthe electricalbreaker of thepool heat pumpis inthe off position;
3.Connect theheatpump tothe watercircuit;
4.Cleanthepoolfilterandmakesurethatthewaterisflowingadequatelythroughthepool
returnline;
5.Switch onthe breakerof theheat pumpelectrical supplyline.
Water Deviation
Some maintenance operations(System Shock) require that the pool heat pump be iso-
latedfromthe filtrationsystemto keeptheheat exchanger fromsufferingdamage overtime.By
using the method of deviation, you will be able to block access of pool water from entering the
poolheatpump.Toderive thewater,youmust :
1.Stoptheunit.
2.Openthe by-passvalve andclose the waterinlet andoutlet valves(Photo1.)
Aftera longer periodof inactivity (1week or more):
3.Atthebeginningof spring,when youprepareyourswimming pool,make sure that the
waterisstableby checking thepH,alcalinityand chlorlevelbeforestartingyour poolheat
pump.(To findoutabout theamount ofchemical productstouse inyour swimming pool,
consult thechapteron "WaterMaintenance" inthemanual.)
4.Whenthewateris stable,youcanclose theby-passvalveandopen thewaterinletand
outlet valves(Photo 2)to endthe deviationprocess.
Photo 1 Photo 2
12

13
Minimum Ideal Maximum
Free chlorine* 1.0
pool 1.0-3.0
spa 3.0-5.0 pool 3.0 spa 10.0
Combined chlorine* None None 0.2
Bromine* 2.0
pool 2.0-4.0
spa 3.0-5.0 pool 4.0 spa 10.0
pH 7.2 7.4 - 7.6 7.8
Total alkalinity* 80 80-120 150
Total dissolved solids* 300 1000-2000 3000
Calcium hardness* 150 200-400 500-1000
Cyanuric acid* 10 30-50 150
Salt* (salt chlorinator) None None 3000
WATER MAINTENANCE
Why Perform Water Maintenance?
Contrarytotraditionalheat pumpsthattreataironly,pool heat pumpsdealwithwaterand
aremuch more sensitive. Thisis mainlycaused bywater chemistry. Onlyyou, theowner of the
heatpump,cancontrolthechemistryofyourswimmingpoolwatertoavoidprematuredegradation
ofyourpool heatpump.
Water Chemistry
Manychemicalsare usedto controlthe qualityofswimming poolwater.Weusedifferent
typesofchlorineorbromine tocontrolmicroorganismsandalgae. Wealso usevariousproducts
to regulate pH and other aspects of the water chemistry. Every product added produces an
effectonwaterchemistrythatmustoftenbebalancedwithotherchemicalproducts. Forexample,
trichlor addition induces a diminution of pH and of total alkalinity (TA). We must balance those
effects by adding sodium bicarbonate (baking soda).
Someorganizations, likethe NSPI(National Spa& Pool Institute),publish standardson
pool water chemistry. Those standards are made to protect swimmers and swimming pool
equipments,particularlytheirmetal parts,copper,steelandevenstainlesssteel,thatwill corrode
undertheeffectofbadchemistry. Generally,ifthe equipmentcanbedamagedbybadchemistry,
thiscan alsobe ahealth hazard. (Seethe followingtable forthe standards.)
Your heat pump, just as any type of pool heater (gas, oil, electric, etc.), features some
metal parts that can be damaged by bad chemistry. The condenser of your pool heat pump is
made of a copper alloy that, as resistant as it is, is sensitive to pH. That is why we strongly
recommend testing the quality of the pool water regularly. These controls must be made on a
weeklybasisand mustatleast featurethefollowing: chlorineorbromine, pHandTA. Moreover,
Table1:ChemicalProductsConcentrationinPoolWaterStandard
*Ppm: parts per million

14
Table 2:pHofVarious ChemicalProductsforPools
Chemical pH
Chlorine
Trichlor (pucks) 2.5-3.0
Sodium Dichlor 6.8-7.0
Lithium Hypochlorite (powder) 10.7
Calcium Hypochlorite (cylinder) 11.8
Liquid Chlorine 13
Bromine (tabs) 3.6
pH Regulating Products
Muriatic Acid 0.1
Dry Acid 1.4
Cyanuric Acid 3
Sodium Bicarbonate 8.3
Sodium Sesquicarbonate 10.1
Soda Ash 13
wesuggest havingthe poolwater testedby aprofessional (oftenfree ofcharge) once amonth.
The water of the pool or spa must be maintained within the standards included in this
manual. Any negligence to do so, will void the warranty. These standards are from the
NSPIandarecommonthroughouttheswimming pool industry;theyarenotparticulartoTurcotte
heatpumps.
Themost important factorfor the durabilityof the pool heat pumpis the pHbecause the
capability of the water to cause the degradation of metal is directly related to it. Let’s also
mentionthatTAisthe measureof the capacityofwater toresistto pHvariation; thereforeit isas
important. Taylor, an importantmanufacturerof poolwater test kitfor professionalsstates:
“Corrosive water will dissolve copper piping and heat exchangers and leave stain on
poolwalls.” [Taylor,ATesting&Treatment Guidepart #2004B,p.35]
“The result is a highly unbalanced water condition resulting in damage to copper heat
exchangers, light rings,stainless steel ladders an concretepool surface.” (Talkingabout
acidityand lowTA)[Taylor,ATesting &Treatment Guide part#2004B, p.11]
Belowis a chartpresenting pHassociated toconcentrated solutionsofvarious chemical
productsfor pools.

15
Sanitizers
Sanitizersare productsused to purify water, torelieve itfrom microbesand algae. They
are chlorine, in its different forms, and bromine in the case of the pools. Each of them has its
advantagesand inconveniences. Theyare sometimesbasic, sometimes acid. They can have
differentimpactson waterchemistryand cannecessitatevarious chemicalproducts to counter-
balancethoseimpactsortostabilizethem. Warmwaterismoredifficulttomaintain,itnecessitates
greaterquantities ofsanitizers and,therefore, greaterquantities ofother chemical products.
Neverpouranysanitizerdirectlyintothewaterintake(skimmer)withouthavingdeviated
the water from the pool heat pump previously. (See the section "Water Deviation",
p.11.)
NOTE: The use of a floatting distributor is recommended as an alternative to pourring chlorine
directlyintothe skimmer. Maintainingthechlorinelevel usingthismethod canhoweverbemore
difficultbecausethewaterflowdissolvingthechlorineislessimportant on thetopofthepoolthan
inthewater pumpsystem.
Shock Treatment
Before performing any shock treatment, deviate water from the pool heat pump to
preventchemical productsfrom damagingit
1) Trichloro-s-triazinetrione (TCCAor trichlor or pucks)
Trichloris avery commonand practicalsanitizer becauseit dissolvesinto hypochlorous
acid,apowerfulsanitizer,andintocyanuricacid,astabilizerimprovingthedurationofitsefficiency.
However, it produces 2 acids that contribute to lowering pH andAT of the pool water. This can
causesevere damage to the pooland to its systembecause of corrosion:
“…havinga strongly acidicpH, TCCA tabletswill reduce total alkalinity and, if notmoni-
tored, low total alkalinity will cause corrosive damage to the pool.” [Taylor,A Testing &
TreatmentGuide part#2004B, p.26]
Usage of trichlor requires the addition of sodium bicarbonate to higher the pH and TA
level. Warning: many users testing only pH will be tempted to use sodium carbonate, or pH+,
however this product does not increase TAlevel and pH will decrease back rapidly. As acidic
water is also most of the time very clear because it is free of microorganisms, T.T.I. wants to
remindyou totest water regularly to avoidproblems causedby acid water. Clearwater isnot a
synonymofgoodqualitywater.
NOTE: Withtrichlor, itispossibleto usewhatis calledachlorinator. Achlorinatorisan
automatic chlorine distribution system, but in no case it is controlling pH and TA of
water. Thinking their system is completely automatic, users of those systems often
neglectto testtheir water. Moreover,make sure that your heatpump installerhas modifiedthe
circuitof your chlorinatorin a mannerto prevent itfrom pouring out its concentratedsolution of
chlorineinto thepool heatpump. (See p.7)

16
2) Bromine
Bromineisa very goodsanitizer. Itissafe and practical. Itdoesnot requireanystabilizer
anditdoes notcauseirritationnor hasanyodor. Furthermore,itsefficiencyisindependentfrom
pH of water. However, it is acid and it destroys TA. Water that is acid and low in TAbecomes
corrosiveand disintegratesmetallic pieces ofthe poolsystem, including the heat exchangerof
your pool heat pump. Therefore, it is imperative to test water frequently, even if water is very
clear, toavoidproblems causedby wateracidity. Acidwater is oftenveryclearbecause itis free
of microorganisms, but it is damageable and of bad quality.
NOTE:with bromine, it is possibleto use whatis called a brominator. Abrominator is
anautomatic brominedistribution system, but in nocase itis controlling pH andTAof
water. Thinking their system is completely automatic, users of those systems often
neglectto testtheir water. Moreover,make sure that your heatpump installerhas modifiedthe
circuitof yourbrominator in amanner to prevent it frompouring out itsconcentrated solutionof
bromineinto the poolheat pump. (See p.7)
3) Sodium hypochlorite (liquid chlorine)
Liquid chlorine is completely soluble in water and does not leave any residue in pool
water,butitdecomposesrapidly,evenwhenstored,andrequireusageofastabilizerlikecyanuric
acid. As it is alkaline, it contributes to raise pH and TA. High pH and TAcan contribute to the
formation of a deposit of limestone on the condenser of the heat pump, creating an isolating
layeronthe heatexchanger and reducingthe heatpumpefficiency.
4) Calcium Hypochlorite (granular or stick chlorine)
Granularchlorineiseasytouseanddissolvesrapidly. Ontheotherhand,itincreasespH,
TAandcalcium hardnesssignificantly. Like withliquid chlorine,high calciumhardness, pHand
TAcancontribute tothe formationof anisolating layeron theheat exchangerreducing theheat
pumpefficiency.
5) Salt Generated Chlorine
Asaltchlorinatorproducesbleachandothercomponentsthroughtheelectrolysisofsalted
water. The proccess does not affect pH norTA. However, users of those systems must test
their pool water on a regular basis since pH and TAmay vary because of other factors.
Saltconcentration mustalso betested becausea saltedsolution containsions thatmay
corrode the cupro-nickel heat exchanger. Do not put more salt in your system than the
quantity recommended by the manufacturer of the salt chlorinator and do not exceed
the recommended concentration. Usually,if thewatertastessalted, it containstoomuch salt
andcan damagethe heatexchanger ofthe poolheat pump.
NOTE: Other types of sanitizers exist; all of them have their advantages and
inconveniences. Whatistrulyimportanttokeep inmindisthatpoolwateris something
thatshouldbemaintainedregularlyandthatshouldbebalancedaccordingtostandards
establishedthroughoutthepool andspaindustry.

17
What to do?
Thepurposeofmaintainingthe waterofyourpoolis notonlytoprotect the swimmers,but
also to improve the working conditions of your pool equipment, particularly of your pool heat
pumpto increaseitsdurability andits efficiency. To achievethis goal, theuser must:
1. Testpoolwaterregularly (chlorineorbromine, pHandtotalalkalinity);
2. Balancethepoolchemistrywithinthelevelofthestandardsusingtheappropriateproducts;
3. Protectthepoolheat pumpwheneverthe watershould bebeyondthe standards.
1) Testing
Wehighly recommendchecking thelevel ofchlorine or bromine,and thelevel ofpH and
TAatleastonce a week. Moreover, wesuggest that youhave your water tested professionally
onceamonth, particularlythefollowingvariables:
· Calcium hardness: a low calcium hardness level implies corrosive water that can
damage your pool heat pump. A high level of calcium hardness contributes to the
formationof depositson thesurface ofthe heat exchangerreducing theefficiency of
thepoolheat pump;
· Totaldissolvedsolids:ahightotalimpliesatendencyofthewatertocorrode,therefore
graduallydestroysthe poolequipment;
· Copperlevel: ahigh copperlevel canindicate adegradation ofthe cupro-nickelheat
exchangerofthe poolheatpump. Sothis canbeconsidered asawarning urgingyou
toverifythe poolwatermore often. Fortheusers ofcopperalgaecides, ahigherlevel
of copper is normal; but verify if there is no gray-black stain deposit indicating the
saturationof thewater in copperand apossible degradationof the heatexchanger;
· Stabilizer (cyanuric acid): a high level of cyanuric acid can damage the equipments
and,especially, is toxic forthe swimmers.
2) Balancing
Accordingto the levels givenby the test resultsand according to thevolume of water of
yourpool,always balancethepool water inamanner thatmeetsthestandards. Your swimming
pool service company can help you choose the proper chemical products and the appropriate
quantities. Always carefully follow the instructions given by the chemical products suppliers.
Neverpour moreinto thewaterthan prescribed.
Warning: any chemical product, acid or basic, is susceptible of provoking the
degradationof theheat exchangerof yourpool heatpump. Never pourany chemical
product into the water intake (skimmer) of your pool to prevent the product from
damagingyour poolheatpump.
3) Protecting the Pool Heat Pump
Ifyou observe that your poolwater is beyondthe establishedstandards, we urgeyou to
shutdownyourpoolheatpump, todivertthewaterfromit andtodisconnectitfromthe plumbing,
asdescribedinthe section“Maintenance”,p11. After,wash theheatexchangerusing tapwater.

HP706
SWIMMING POOL HEATPUMP CONTROL
USER GUIDE MANUAL
18

1. INSTRUMENT IDENTIFICATION
HEATONLED
POOLor SPA
SET UP MODE LED
SET-UPKEY
BACKWASH KEY
DIGITALDISPLAY
F DEGREES LED
CDEGREES LED
DECREASE KEY
INCREASEKEY
ON/OFF KEY
2. DESCRIPTION OF FRONT PANEL:
DIGITAL DISPLAY: Display normally shows the actual water temperature.
HEAT ON LED: Indicates that the heat pump is heating the pool or the spa.
°F LED: Indicates that the temperature is being displayed in °F.
°C LED: Indicates that the temperature is being displayed in °C.
SET MODE LED: Indicates the setup or adjustment mode.
ON/OFF KEY [%]: Turns the heat pump ON or OFF.
BACKWASH KEY [BACKWASH]: Hold for 3 seconds to activate the backwash mode.
SET KEY [SET]: Hold for 3 seconds to activate the setup mode.
INCREASE KEY [^]: Increases the desired or setpoint temperature.
DECREASE KEY [v]: Decreases the desired or setpoint temperature.
NOTE: The display may be changed in steps by pushing the [^] or [v] keys briefly, or automatically by holding down
the same key.
19

3. OPERATION:
The control is first shipped in the OFF mode. The digital display will show «- - -» , indicating the OFF mode. THE
CONTROL MUST BE IN THE ON MODE IN ORDERTO CHANGETHE SETPOINT (THE DESIRED WATER
TEMPERATURE) OR HAVEACCESS TO THE OTHER FEATURES! The setpoint is factory set at 70 °F.
a. SWITCHING THE HEATPUMPON:
Hold the [SET] key for 3 seconds. The set mode LED will come on to indicate the set mode. Now touch the [%] key.
The display will now show the actual water temperature. If there is a demand for heat, that is if the actual water
temperature is lower than the desired or setpoint temperature, the Heat On LED, the compressor and fan will come
on. Note that each time the compressor turns off there will be a 5 minute delay before it can be turned on. After 8
seconds the set mode LED will go off.
b. SWITCHING THE HEATPUMP OFF:
Hold the [SET] key for 3 seconds. The set mode LED will come on to indicate the set mode. Now touch the [%] key.
The display will now show «- - -». After 8 seconds the set mode LED will go off.
c. TO VIEW THE SETPOINT OR DESIRED TEMPERATURE:
Hold the [^] key to display the setpoint or desired temperature.
d. TO VIEW THE DEFROST TEMPERATURE:
Hold the [v] key to display the defrost temperature.
e. TO CHANGE THE SETPOINT TEMPERATURE:
Hold the [SET] key for 3 seconds. The set mode LED will come on to indicate the set mode. Now touch the [^] key to
increase the value or the [v] key to decrease the value. The adjustment range is from 70 °F to 105 °F ( 21 °C to 41 °C
in Celsius mode ). You have 8 seconds from the time that the last key was touched to make the adjustment. After 8
seconds the set mode LED will go off.
f. BACKWASHOPERATION:
Hold the [BACKWASH] key for 3 seconds. The display will show [bac] to indicate the backwash mode. In this mode
the heatpump is turned off for 20 minutes in order to allow time for backwash. The heatpump will turn on
automatically at the end of the 20 minutes. If you would like to turn on the heatpump before the 20 minute delay,
simply press the [BACKWASH] key for 3 seconds ( when the circulation pump is returned to the filter position).
g. SWITCHING BETWEEN °F AND °C:
Hold the [SET] key for 3 seconds. The set mode LED will come on to indicate the set mode. Touch the [^] key and
the [BACKWASH] simultaneously to select the °F mode. Touch the [v] key and the [BACKWASH] simultaneously to
select the °C mode. After 8 seconds the set mode LED will go off.
4. CALIBRATION:
Other features are available on the control which aid for both installation and servicing.
a. TOVIEWDEFROSTTEMPERATURE:
To view the defrost temperature, push the [v] keys.
b.TOCANCELTHE5 MINUTEANTI-SHORTCYCLEDELAY:
For a quick restart, push both the [BACKWASH] and [%] keys for 3 seconds. Ensure that the high and low pressures
are equalized.
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