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®
Pool and Spa Heater Installation and User’s Guide
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120/240 VAC NATURAL GAS/LP GAS
Models Natural Propane
175K BTU/HR 460792 460793
200K BTU/HR
(A SME)
461000 461001
200K BTU/HR 460730 460731
250K BTU/HR 460732 460733
250K BTU/HR (HD) 460806 –
250K BTU/HR
(A SME)
460771 460772
250K BTU/HR
(HD ASME)
461020 –
300K BTU/HR 460734 460735
400K BTU/HR 460736 460737
400K BTU/HR (HD) 460805 –
400K BTU/HR
(A SME)
460775 460776
400K BTU/HR
(HD ASME)
461021 –
FORYOURSAFETY -Thisproduct must beinstalled andservicedbyauthorizedpersonnel,qualified inpool/spa
heaterinstallation. Improperinstallationand/oroperationcan create carbonmonoxidegasandfluegaseswhich can
cause serious injury,propertydamage,or death.For indoor installations, asan additionalmeasureof safety, Pentair
Aquatic Systemsstronglyrecommends installation of suitable CarbonMonoxide detectors in the vicinityof this
applianceandin anyadjacent occupiedspaces.Improperinstallationand/or operationwillvoidthewarranty.
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MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide Rev. H 9-5-12
Customer Service and Tecnincal Support
If youhave questions aboutorderingPentair Aquatic Systems replacement parts,and pool
products, please call:
Phone: (800)831-7133
Fax: (800) 284-4151
(8A.M.to 4:30PMEasternTime/PacificTime)
Web sites: www.pentairpool.com - www.staritepool.com
Rev. H 9-5-12 MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide
Contents
?HFTLPO!%#!4HDTHR!5GHOTLILFDTLPO!5OIPRNDTLPO ####################################################################### (
?HFTLPO!&#!BDROLOJ!DOG!?DIHTV!5OIPRNDTLPO ######################################################################### )
Important Notices ................................................................................................................................................................................. 5
Warranty Information............................................................................................................................................................................ 5
CodeRequirements .............................................................................................................................................................................. 6
ConsumerInformation andSafety Information ...................................................................................................................................... 6 - 9
GeneralSpecifications ......................................................................................................................................................................... 9
?HFTLPO!'#!5OSTDMMDTLPO ############################################################################################################# %$
Heater Description................................................................................................................................................................................ 10
PuttingtheHeaterintoService ............................................................................................................................................................ 10
Specifications ...................................................................................................................................................................................... 11
Plumbing Connections .......................................................................................................................................................................... 12
Valves .................................................................................................................................................................................................. 12
Manual By-Pass .................................................................................................................................................................................. 12
WaterConnections ............................................................................................................................................................................... 13
BelowPool Installation ......................................................................................................................................................................... 13
Gas Connections ................................................................................................................................................................................. 14
SedimentTraps.................................................................................................................................................................................... 14
Gas PipeSizing................................................................................................................................................................................... 15
TestingGas Pressure/Gas PressureRequirements ............................................................................................................................. 16
Outdoor Installation .............................................................................................................................................................................. 17
Outdoor Installation VentingGuidelines ................................................................................................................................................ 18
Indoor Venting—GeneralRequirements (Category I& Category III–clarification) ............................................................................... 19
HeaterClearances................................................................................................................................................................................ 19
OutsideVent Removal ......................................................................................................................................................................... 19
CombustionAir Supply ......................................................................................................................................................................... 20
CorrosiveVapors andPossibleCauses ................................................................................................................................................ 20
VentInstallation(Indoor Installationfor U.S.or OutdoorShelterfor Canada) ........................................................................................ 21
Vertical Venting- NegativePressure ................................................................................................................................................... 21 -23
Horizontalor Vertical Venting - PositivePressure ................................................................................................................................ 24
ConnectingSpecialGas Venting .......................................................................................................................................................... 24 -26
OutdoorShelter Vent Installation .......................................................................................................................................................... 27
Garageor Utility RoomInstallation ....................................................................................................................................................... 27
Control Panel Indexing ......................................................................................................................................................................... 28
Final Installation Check ........................................................................................................................................................................ 28
ElectricalConnections .......................................................................................................................................................................... 29
Fireman’sSwitchConnection/Remote ControlConnections .................................................................................................................. 30
MasterTempHeaterWiringDiagram ..................................................................................................................................................... 31
Electrical Schematic LadderDiagram ................................................................................................................................................... 32
?HFTLPO!(#!;QHRDTLPO############################################################################################################### ''
Basic System Operation ...................................................................................................................................................................... 33
HSI (Hot-Surface Ignition) Lighting/Operation ....................................................................................................................................... 33
Operating ............................................................................................................................................................................................. 34
To Turn Off Gas toAppliance............................................................................................................................................................... 34
Safety Controls .................................................................................................................................................................................... 35- 37
?HFTLPO!)#!@RPUEMHSKPPTLOJ ################################################################################################### ',
InitialTroubleshootingandTroubleshootingChart ................................................................................................................................. 38
Heater WillNot FireTroubleshooting .................................................................................................................................................... 39 -42
LED Diagnostics .................................................................................................................................................................................. 43 -44
Burner /HeatExchanger Troubleshooting ............................................................................................................................................ 45
?HFTLPO!*#!8DLOTHODOFH########################################################################################################## (*
Care andMaintenance.......................................................................................................................................................................... 46
PressureRelief Valve........................................................................................................................................................................... 46
After Start-Up ...................................................................................................................................................................................... 47
Spring,Fall andWinter Operation ......................................................................................................................................................... 47
MaintainingPoolTemperature............................................................................................................................................................... 48
Energy SavingTips .............................................................................................................................................................................. 49
Chemical Balance ................................................................................................................................................................................ 48- 49
ReplacementParts .............................................................................................................................................................................. 50- 54
MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide Rev. H 9-5-12
La
Rev. H 9-5-12 MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide
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IMPORTANTNOTICES
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WARRANTYINFORMATION
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IM!XNTQ!RSASE%NF%SHE%AQS! HEASEQ&!?E! QEREQUE! SHE! QIGHS! SN! LAJE!ILOQNUELEMSR!VHICH!CHAMGE! SHE! ROECIFICASINMR! NF! SHE
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CAUTION
OPERATING THIS HEATER CONTINUOUSLY AT WATER TEMPERATURE BELOW 68° F. WILL CAUSE HARMFUL
CONDENSATION AND WILL DAMAGE THE HEATER AND VOID THE WARRANTY. Do not use the heater to protect
pools or spas from freezing if the finalmaintenance temperature desired is below 68° F.,as thiswill cause condensation
related problems.
Section 2: Warning and Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
MASTERTEMP
®
Pool and Spa Heater
MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide Rev. H 9-5-12
CONSUMERINFORMATIONAND SAFETY
WARNING
The U.S. Consumer Product Safety Commission warns that elevated water temperature can be hazardous.
See below for water temperature guidelines before setting temperature.
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Rev. H 9-5-12 MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide
SAFETYINFORMATION
The MasterTemp
®
pool heaters are designed and manufactured to provide many years of safe and reliable service when
installed, operatedandmaintained according to theinformationinthismanual.Throughoutthe manual,safety warnings and
cautions are identified by the “ “ symbol. Be sure to read and comply with all of the warnings andcautions.
WARNING —
This heater is equipped with an unconventional gas control valve that is factory set with a
manifold pressure of -.2 inches wc.
Improper installation, adjustment, alteration, service or
maintenancecancause property damage, personal injury or loss of life. Installation orservice must
be performedby aqualifiedinstaller, service agency or the gassupplier. If this control isreplaced, it
must be replaced with an identical control.
Do not attempt to adjust the gas flow by adjusting the regulator setting.
CARBON MONOXIDE GAS IS DEADLY
READ OWNERS MANUAL COMPLETELY BEFORE OPERATING
THIS PRODUCT MUST BE INSTALLED AND SERVICED BY A PROFESSIONAL SERVICE
TECHNICIAN, QUALIFIED IN POOL HEATER INSTALLATION. Some jurisdictions require that
installers be licensed. Check with your local building authority about contractor licensingrequirements.
Improper installationand/oroperationcouldcreate carbonmonoxidegasandfluegaseswhichcould cause
serious injuryor death. Improper installationand/or operation will void the warranty.
Exhaustfromthis pool heater containstoxic levelsof carbon monoxide, a dangerous,poisonousgas
you cannot see or smell. Symptoms of carbon monoxide exposure or poisoning include dizziness,
headache, nausea, weakness, sleepiness, muscular twitching, vomiting and inability to think clearly.
IF YOU EXPERIENCE ANYOF THE ABOVE SYMPTOMS, IMMEDIATELY TURNOFF THE POOL
HEATER,LEAVETHEVICINITYOFTHEPOOLORSPAANDGETINTOFRESHAIRIMMEDIATELY.
THE POOL HEATER MUST BE THOROUGHLY TESTED BY A GAS PROFESSIONAL BEFORE
RESUMING OPERATION.
EXCESSIVE CARBON MONOXIDE EXPOSURE CAN CAUSE BRAIN DAMAGEOR DEATH.
NEVERusethispool heaterindoorswithoutspecifiedventilationsystem(and properlyinstalledvent pipe).
NEVER use this poolheater in thehomeor inpartly enclosed areas (such as garages), unless
the specified ventilation system is used. If used outdoors, install far from open windows, doors,
vents and other openings.
Pentair strongly recommends that all vents, pipes andexhaust systems be initially and periodically
testedfor properoperation. Thistestingcan be accomplishedby usinga hand-held carbonmonoxide
meter and/or by consulting with a gas professional.
Poolheatersmustbeused inconjunctionwith carbon monoxidedetectorsinstallednearthe pool heater.
The carbon monoxide detectors must be periodically inspected for proper operation so as to insure
continuedsafety.Brokenormalfunctioning carbon monoxide detectorsmustbe replaced immediately.
DANGER —
WARNING —FOR YOUR SAFETY
This product must be installed and serviced by a professional service technician, qualified in pool
heater installation. Some jurisdictions require that installers be licensed. Check with your local
building authority about contractor licensing requirements. Improper installation and/or operation
couldcreatecarbonmonoxidegasandfluegaseswhichcouldcauseseriousinjuryordeath.Improper
installation and/or operation will void the warranty.
MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide Rev. H 9-5-12
SAFETYINFORMATION,(cont’d.)
WARNING —
Risk of fire or explosion from incorrect fuel use or faulty fuel conversion.
Do not try to run a
heater setup for natural gasonpropane gas or vice versa. Onlyqualifiedservice techniciansshould
attempt to convert heaterfrom one fuel to theother. Donot attemptto alter the rated input or type of
gas by changing theorifice. If itis necessary to convert to a different type of gas, consultyour Pentair
dealer. Serious malfunction of the burner can occur which may result in loss of life.Any additions,
changes, or conversions required in order for the appliance to satisfactorily meet the application
needs must be made by a Pentair dealer or other qualified agency using factory specified and
approved parts. The heater is available for usewith natural gas or LP (propane) gas only. It is not
designed to operate with any other fuels. Refer to the nameplate for the type of gas the heater is
equipped to use.
• Use heater only with the fuel for which it is designed.
• If a fuel conversion is necessary, refer this work to a qualified service technician or gas supplier
before putting the heater into operation.
WARNING —
Risk of fire or explosion from flammable vapors.
Donotstoregasoline, cleaningfluids,varnishes,
paints, or othervolatile flammable liquids near heater or in the same room with heater.
WARNING —
Risk of explosion if unit is installed near propane gas storage.
Propane (LP) gas is heavier
than air. Consult local codes and fire protection authorities about specific installation requirements
andrestrictions. Locatetheheater awayfrom propanegasstorage andfilling equipmentas specified
by the Standard for the Storage and Handling of Liquefied Petroleum Gases, CAN/CSA B149.2
(latest edition) or ANSI/NFPA58 (latest edition).
WARNING —
Risk of fire, carbon monoxide poisoning, or asphyxiation if exhaust venting system leaks.
Only qualified service technicians should attempt to service the heater, as leakage of exhaust
products or flammablegas may result from incorrect servicing.
WARNING —
Risk of asphyxiation if exhaust is not correctly vented. Follow venting instructions exactly
when installing heater.
Do not use a drafthood with this heater, as the exhaust is under
pressure from the burner blower and a draft hood will allow exhaust fumes to blow into the room
housing the heater. The heater is supplied with anintegral venting system for outdoor installation.
A vent conversion kit (SeePage24 for Part Numbersfor ConversionKits) is availablefor installations
in enclosures (Canada) or indoors (U.S.). Use the specified venting, and only thespecified venting,
when heaterisinstalledinan enclosure or indoors. In Canada, this pool heatercan only be installed
outdoors or in anenclosurethat is not normallyoccupied and has no openings directly intooccupied
areas. See Page 20 for enclosure venting requirements.
CAUTION —
Label all wires prior to disconnection when servicing controls. Wiring errors can cause
improper and dangerous operation. Wiring errors can also destroy the control board.
• Connect heater to
120
or
240
Volt, 60Hz., Single Phasepower only.
• Verify proper operation after servicing.
• Do not allow children to play on or around heateror associated equipment.
• Neverallow children to use thepool or spa without adult supervision.
• Read and follow other safety information contained in this manual prior to operating this pool
heater.
Rev. H 9-5-12 MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide
GENERALSPECIFICATIONS
NOTICE:
• Combustion air contaminated by corrosive chemical fumes can damage the heater and will void the warranty.
• The Combination Gas Control Valveon this heater differs from most appliance gas controls. If it must bereplaced,
for safety reasons replace it only with an identical gas control.
• The access door panels must be in place toprovide proper ventilation. Do not operate the heaterformore than five (5)
minutes with the access door panels removed.
• This heater is design certified by CSA International as complying with the Standard for Gas Fired Pool Heaters,
ANSI Z21.56/CSA 4.7, and is intended for use in heating fresh water swimming pools or spas.
• Theheater isdesigned for the heatingof chlorine, bromine or salt systemswimming pools and spas. It should
NOT
be
used as a space heating boiler, or general purpose water heater.
• The heater is design certified by CSA International for installation on combustible flooring. Specified minimum
clearances must be maintained to combustible surfaces (see “Heater Clearances”, page 19).
• The heater shouldbe located in an area whereleakage of the heater or connections will not result in damageto the
areaadjacent to the heater or to the structure. When such locations cannot be avoided, it is recommendedthat a
suitable drain pan, adequately drained, be installed under the heater. The pan must not restrict air flow.
• Theheatermay notbeinstalledwithin 5 ft.(1.5M ) oftheinside surface of a poolor spa unlessit isseparatedby a solid
fence, wall or otherpermanent barrier.
CONSUMER INFORMATION ANDSAFETY
WARNING
The U.S. Consumer Product Safety Commission warns that carbon monoxide is an "invisible killer". Carbon monoxide
is a colorless and odorless gas.
.+ =SdTa`!_a`aj[VW![e!bdaVgUWV!Tk!Tgd`[`Y!XgW^)![`U^gV[`Y!`SfgdS^!YSe!S`V!bdabS`W+
/+ IdabWd![`efS^^Sf[a`)!abWdSf[a`!S`V!_S[`fW`S`UW!aX!XgW^*Tgd`[`Y!Sbb^[S`UWe![`!fZW!Za_W![e!fZW!_aef![_badfS`f
XSUfad![`!dWVgU[`Y!USdTa`!_a`aj[VW!ba[ea`[`Y+
0+ <W!egdW!fZSf!XgW^!Tgd`[`Y!Sbb^[S`UWe!egUZ!Se!ZWSfWde!SdW![`efS^^WV!Tk!bdaXWee[a`S^e!SUUadV[`Y!fa!_S`gXSUfgdWd%e
[`efdgUf[a`e!S`V!UaVWe+
1+ ;^iSke!Xa^^ai!fZW!_S`gXSUfgdWd%e!V[dWUf[a`e!Xad!eSXW!abWdSf[a`+
2+ BShW!fZW!ZWSf[`Y!ekefW_!&[`U^gV[`Y!hW`fe'![`ebWUfWV!S`V!eWdh[UWV!S``gS^^k!Tk!S!fdS[`WV!eWdh[UW!fWUZ`[U[S`+
3+ ?jS_[`W!hW`fe!dWYg^Sd^k!Xad![_bdabWd!Ua``WUf[a`e)!h[e[T^W!UdSU]e)!dgef!ad!efS[`e+
4+ C`efS^^!TSffWdk*abWdSfWV!USdTa`!_a`aj[VW!S^Sd_e+!LZW!S^Sd_e!eZag^V!TW!UWdf[X[WV!fa!fZW!dWcg[dW_W`fe!aX!fZW
_aef!dWUW`f!ME)!C;K)!=K;!S`V!C;IFH!efS`VSdV!Xad!USdTa`!_a`aj[VW!S^Sd_e+!LWef!USdTa`!_a`aj[VW!S^Sd_e
dWYg^Sd^k!S`V!dWb^SUW!VWSV!TSffWd[We+
MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide Rev. H 9-5-12
?HFTLPO! '-! ! 5OSTDMMDTLPO! 5OSTRUFTLPOS
Gas
Air
Mixer
Blower
Inlet
(Cold
Water)
Exhaust
HeatingCoils
Outlet
(Mixed
Water)
Burner
Figure 1.
HEATERDESCRIPTION
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_SfUZWV!ad[X[UW!b^SfWe!_WfWd! fZW!S[d! S`V!YSe![`fa! fZW!_[jWd+! LZW
T^aiWd!VdSie!fZW!S[d!S`V!YSe!fZdagYZ!fZW!_[jWd!S`V!XadUWe![f![`fa
fZW!Tgd`Wdte!X^S_W!Za^VWd+!;!eWS^WV!ZWSf!WjUZS`YWd!egddag`Ve!fZW
X^S_W!Za^VWd)!V[eUZSdY[`Y!WjZSgef!YSeWe!agf!fZW!X^gW+
Lia![`UZ!IN=!iSfWd!b[b[`Y!Ua``WUfe!V[dWUf^k!fa!fZW!_S`[Xa^V,ZWSVWd
a`!fZW!ZWSf!WjUZS`YWd!ge[`Y!/#!IN=!e^[b!g`[a`e!bdah[VWV!i[fZ!fZW
ZWSfWd+!LZW!agfWd!_S`[Xa^V!dW_S[`e!Uaa^8!`a!ZWSf!e[`]e!SdW!dWcg[dWV+
;!fZWd_S^!dWYg^Sfad!S`V!S`![`fWd`S^!TkbSee!dWYg^SfW!fZW!iSfWd!X^ai
fZdagYZ!fZW! ZWSf! WjUZS`YWd!fa! _S[`fS[`!fZW! UaddWUf! agf^Wf
fW_bWdSfgdW+!LZW!ZWSfWd!abWdSfad!Ua`fda^!bS`W^!TaSdV!SeeW_T^k![e
^aUSfWV!a`!fab!aX!fZW!ZWSfWd+
SEQUENCE OFOPERATION
;`! W^WUfda`[U! fW_bWdSfgdW! eW`e[`Y! ZNKXSOYZUX! [`!fZW! _S`[Xa^V
SVSbfWd![`^Wf!Ua`fda^e!fZW!ZWSfWd! abWdSf[a`+!OZW`!fZW![`^Wf!iSfWd
fW_bWdSfgdW!Vdabe! TW^ai!fZW! fW_bWdSfgdW!eWf!a`! fZW!UVKXGZOTM
IUTZXUR)!fZW!H[XTKX!IUTZXURRKX!egbb^[We!baiWd!fa!fZW!Ua_Tgef[a`
GOX!HRU]KX!fZdagYZ!S!eWd[We!aX!YGLKZ^!OTZKXRUIQY+!LZW![`fWd^aU]e!Ua`e[ef!aX7
n fZW!VXKYY[XK!Y]OZIN!&?A')!iZ[UZ!eW`eWe!fZSf!fZW!bg_b![e!dg``[`Y)
n fZW!NOMN!ROSOZ!Y]OZIN!&8;A')!iZ[UZ!abW`e![X!fZW!ZWSf!WjUZS`YWd!agf^Wf!fW_bWdSfgdW!YaWe!STahW!.02~!@!&24~!=')!S`V
n fZW!GOX!LRU]!Y]OZIN!&16A')!iZ[UZ!eW`eWe!fZW!bdWeegdW!Vdab!SUdaee!fZW!S[d!_WfWd[`Y!ad[X[UW)
n fZW!G[ZUSGZOI!MGY!YN[Z&ULL!&17A'!ei[fUZ)!iZ[UZ!abW`e![X!fZW!ZWSf!WjUZS`YWd!agf^Wf!fW_bWdSfgdW!YaWe!STahW!.1-~!@
&3-~!='+
n fZW! YZGIQ!LR[K!YKTYUX!&A6A')!iZ[UZ!eZgfe!Vai`!fZW!ZWSfWd![X!fZW!X^gW!YSe!fW_bWdSfgdW! dWSUZWe!15-~!@!&/16~!='+
LZW!S[d!X^ai!ei[fUZ!&;@K'!eW`eWe!fZW!bdWeegdW!Vdab!SUdaee!fZW!S[d!_WfWd[`Y!ad[X[UW+!;e!eaa`!Se!fZWdW![e!egXX[U[W`f!S[d!X^ai)
fZW!;@K!U^aeWe)!U^ae[`Y!fZW!U[dUg[f!fa!fZW!NUZ!Y[XLGIK!OMTOZKX!&8A9')!iZ[UZ![Y`[fWe!fZW!XgW^!_[jfgdW+!H`!S!US^^!Xad!ZWSf)!fZW
T^aiWd!S`V!BKC!SdW!W`WdY[lWV+!C`!STagf!/-!eWUa`Ve)!fZW!YSe!hS^hW!abW`e!S`V![Y`[f[a`!aUUgde+!LZW!BKC!fZW`!ei[fUZWe!fa!S
eW`e[`Y!_aVW!S`V!_a`[fade!fZW!X^S_W+
LZW!ZWSfWd![e! Wcg[bbWV!i[fZ!S!V[Y[fS^!abWdSf[`Y!Ua`fda^!fZSf!W`ST^We!fZW!geWd!fa!bdW*eWf!fZW!VWe[dWV!baa^! S`V!ebS! iSfWd
fW_bWdSfgdWe+!LZW!Ua`fda^!W`ST^We!fZW!geWd!fa!eW^WUf!TWfiWW`!baa^!S`V!ebS!ZWSf[`Y)!S`V!XWSfgdWe!S!V[Y[fS^!V[eb^Sk!fZSf
[`V[USfWe!fZW!iSfWd!fW_bWdSfgdW+
PUTTINGTHEHEATER INTO SERVICE
CX!fZW!ZWSfWd![e![`efS^^WV!TW^ai!fZW!^WhW^!aX!fZW!baa^)!ad!_adW!fZS`!fia!XWWf!STahW!baa^!^WhW^)!fZW!bdWeegdW!ei[fUZ!eWff[`Y
eZag^V!TW!SV\gefWV+!KWW!O;L?J!IJ?KKMJ?!KOCL=B)![`!fZW!K;@?LQ!=HGLJHEK!KWUf[a`+
<WXadW!bgff[`Y!fZW!ZWSfWd![`fa!eWdh[UW!Xad!fZW!X[def!f[_W)!Xa^^ai!fZW![`efdgUf[a`e!g`VWd!u<?@HJ?!KL;JL*MIv!&bSYW!00'![`
fZW! Xda`f! aX!fZ[e! _S`gS^+!=ZWU]! Xad! bdabWd! abWdSf[a`! aX! fZW! ZWSfWd! Tk! Xa^^ai[`Y! fZW! efWbe!g`VWd! uHI?J;LCHG
CGKLJM=LCHGK+v
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Rev. H 9-5-12 MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide
LZWeW
MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide Rev. H 9-5-12
PLUMBINGCONNECTIONS
LZW!FSefWdLW_b!ZWSfWd!ZSe! fZW!g`[cgW!USbST[^[fk!aX!V[dWUf
eUZWVg^W!1-!IN=!b^g_T[`Y!Ua``WUf[a`e+!!;!eWf!aX!Tg^]ZWSV
X[ff[`Ye![e! [`U^gVWV! i[fZ! fZW! FSefWdLW_b!ZWSfWd!fa! [`egdW
Ua`Xad_[fk!i[fZ! IW`fS[d te! dWUa__W`VWV!IN=!b^g_T[`Y
bdaUWVgdW+!HfZWd! b^g_T[`Y! Ua``WUf[a`e! US`!TW! geWV+!KWW
@[YgdW!0!Xad!b^g_T[`Y!Ua``WUf[a`e+
CAUTION
Before operating the heater on a new installation, turn
on the circulation pump and bleed all the air from the
filter using the air relief valve on top of the filter. Water
should flow freely through the heater. Do not operate
the heater unless water in the pool/spa is at the proper
level. If a manualby-pass is installed, temporarily close it
to insure that all air is purged from the heater.
WATERCONNECTIONS
LZW!ZWSfWd!dWcg[dWe!bdabWd! iSfWd!X^ai!S`V!bdWeegdW!Xad![fe
abWdSf[a`+ KWW!@[YgdW!2!Xad!fZW!dWUa__W`VWV![`efS^^Sf[a`+
LZW!X[^fWd!bg_b!V[eUZSdYWe!fa!fZW!X[^fWd)!fZW!!X[^fWd!V[eUZSdYWe
fa!fZW!ZWSfWd)!S`V!fZW!ZWSfWd!V[eUZSdYWe!V[dWUf^k!fa!fZW!baa^
ad!ebS+
;!_S`gS^!TkbSee!hS^hW!eZag^V!TW![`efS^^WV!SUdaee!fZW!ZWSfWd
iZW`! fZW!bg_b! X^ai! WjUWWVe!./-!AIF! &121!EIF'+!KWW
uO;L?J!@EHO!J;L?v!a`!bSYW!4*!LST^W!.!Xad!eWff[`Y!aX
fZW!_S`gS^!Tk*bSee!hS^hW+
FS]W!egdW!fZSf!fZW!agf^Wf!b^g_T[`Y!Xda_!fZW!ZWSfWd!Ua`fS[`e
`a!eZgf*aXX!hS^hWe!ad!afZWd!X^ai!dWefd[Uf[a`e!fZSf!Uag^V!bdWhW`f
X^ai!fZdagYZ!fZW!ZWSfWd!&WjUWbf!Xad!baa^![`efS^^Sf[a`e!Se!`afWV
TW^ai)!ad!i[`fWd[l[`Y!hS^hWe!iZWdW!`WWVWV'+!La!ei[fUZ!X^ai
TWfiWW`!fZW!baa^!S`V!ebS)!geW!S!V[hWdfWd!hS^hW+!>a!`af!geW
S`k!hS^hW!fZSf!US`!eZgf!aXX!fZW!X^ai+
C`efS^^!fZW!UZW_[US^!XWWVWd!Vai`efdWS_!aX!fZW!ZWSfWd+!C`efS^^
S!UZW_[US^!dWe[efS`f!a`W*iSk!UZWU]!hS^hW!TWfiWW`!fZW!ZWSfWd
S`V!fZW!UZW_[US^!XWWVWd!fa!bdWhW`f!TSU]*e[bZa`[`Y!fZdagYZ
fZW!ZWSfWd!iZW`!fZW!bg_b![e!aXX+
78<4.0,!CX!fZW!ZWSfWd![e!b^g_TWV![`!TSU]iSdVe)![f!i[^^!UkU^W!Ua`f[`gage^k+!FS]W!egdW!b[b[`Y!Xda_!X[^fWd![e!`af!dWhWdeWV
iZW`![`efS^^[`Y!ZWSfWd+
=a``WUf!fZW!ZWSfWd!V[dWUf^k! fa!/#!IN=!b[bW)! ge[`Y!fZW![`fWYdS^!g`[a`e!bdah[VWV+!BWSf!e[`]e!SdW!`af!dWcg[dWV+!LZW!^ai
fZWd_S^!_See!aX!fZW!ZWSfWd!i[^^!bdWhW`f!ahWdZWSf[`Y!aX!fZW!b[b[`Y!Ua``WUfWV!fa!fZW!bg_b!WhW`![X!fZW!ZWSfWd!eZgfe!Vai`
g`WjbWUfWV^k+
HUUSe[a`S^^k!S!fia*ebWWV!bg_b!i[^^!`af!VWhW^ab!W`agYZ!bdWeegdW!a`!fZW!^ai!ebWWV!fa!abWdSfW!fZW!ZWSfWd+!C`!fZ[e!USeW)!dg`
fZW!bg_b!Sf!Z[YZ!ebWWV!a`^k!fa!abWdSfW!fZW!ZWSfWd+!CX!fZ[e!VaWe!`af!ea^hW!fZW!bdaT^W_)!Va!`af!fdk!fa!dg`!fZW!ZWSfWd+!C`efWSV)
UaddWUf!fZW![`efS^^Sf[a`+
>a!`af!abWdSfW!fZW!ZWSfWd!iZ[^W!S`!Sgfa_Sf[U!baa^!U^WS`Wd![e!S^ea!abWdSf[`Y+!CX!fZW!U[dUg^Sf[a`!bg_b!egUf[a`![e!b^gYYWV!&Xad
WjS_b^W!Tk!^WShWe')!fZWdW!_Sk!`af!TW!SVWcgSfW!X^ai!fa!fZW!ZWSfWd+!>a!`af!dW^k!a`!fZW!bdWeegdW!ei[fUZ![`!fZ[e!USeW+
Pool
Main
Drain
Spa
From Pool
3-Way
Valve
3-Way
Valve
3-Way
Valve
Chlorinator
8MI[MY
A\UX
3PMKS!FIT ]M
6QT[MY
Figure 5.
PUMP
FILTER
POOL
HEATER
MANUAL
BY-PASS
TO
POOL
GATE
VAL VE
FROM
POOL
Figure3.
Rev. H 9-5-12 MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide
BELOWPOOLINSTALLATION
CX!fZW!ZWSfWd![e!TW^ai!iSfWd!^WhW^)!fZW!bdWeegdW!ei[fUZ!_gef!TW!SV\gefWV+!LZ[e!SV\gef_W`f!_gef!TW!Va`W!Tk!S!cgS^[X[WV
eWdh[UW!fWUZ`[U[S`+!KWW!Xa^^ai[`Y!31CB9>=!TWXadW![`efS^^Sf[a`+
CAUTION
BELOW OR ABOVEPOOLINSTALLATION
The water pressure switch is set in the factory at 3.00 PSI (± 0.75 PSI). This setting is for a heater installed at pool level.
If the heater is to be installed more than 1’ above or below, the water pressure switch must be adjusted by a qualified
service technician. See page 35, Figure 29.
FLOWSWITCH
If the heater is installed more than 5’ above the pool or more than 4’ below the pool level, you will be beyond the limits
of the pressure switch and a flow switch must be installed. Locate and install the flow switch externally on the outlet
piping from the heater, as close as possible to the heater. Connect the flow switch wires in place of the water
pressure switch wires.
VALVES
OZW`!S`k!Wcg[b_W`f![e!^aUSfWV!TW^ai!fZW!egdXSUW!aX!fZW!baa^!ad!ebS)!hS^hWe!eZag^V!TW!b^SUWV![`!fZW!U[dUg^Sf[a`!b[b[`Y
ekefW_!fa![ea^SfW!fZW!Wcg[b_W`f!Xda_!fZW!baa^!ad!ebS+!=ZWU]!hS^hWe!SdW!dWUa__W`VWV!fa!bdWhW`f!TSU]*e[bZa`[`Y+!<SU]*
e[bZa`[`Y![e!_aef!^[]W^k!fa!aUUgd!iZW`!fZW!bg_b!efabe)!UdWSf[`Y!S!bdWeegdW*egUf[a`!V[XXWdW`f[S^+!>a!=>B!eS`[f[lW!fZW!baa^
Tk!bgff[`Y!UZ^ad[`W!fST^Wfe!ad!ef[U]e![`fa!fZW!e][__Wd&e'+!OZW`!fZW!bg_b![e!aXX)!fZ[e!i[^^!USgeW!S!Z[YZ!Ua`UW`fdSf[a`!aX
UZ^ad[`W!fa!W`fWd!fZW!ZWSfWd)!iZ[UZ!Uag^V!USgeW!Uaddae[a`!VS_SYW!fa!fZW!ZWSf!WjUZS`YWd+
CAUTION
Exercise care when installing chemical feeders so as to not allow back siphoning of chemical into the heater, filters
or pump. When chemical feeders are installed in the circulation of the piping system, make sure the feeder outlet line
is down stream of the heater, and is equipped with a positive seal noncorrosive “Check Valve”, (P/N R172288),
between the feeder and heater.
MANUAL BY-PASS
OZWdW!fZW!iSfWd!X^ai!dSfW!WjUWWVe!fZW!_Sj[_g_!./-!AIF)!S!_S`gS^
TkbSee!eZag^V!TW![`efS^^WV!S`V!SV\gefWV+!!;XfWd![`efS^^[`Y!fZW! hS^hW)
SV\gef! fZW!hS^hW!fa!Td[`Y!fZW!X^ai!dSfW!i[fZ[`! fZW!SUUWbfST^W!dS`YW+
LZW`!dW_ahW!fZW!hS^hW!ZS`V^W!ad!^aU]
MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide Rev. H 9-5-12
GASCONNECTIONS
<WXadW![`efS^^[`Y!fZW!YSe!^[`W)!TW!egdW!fa!UZWU]!iZ[UZ!YSe!fZW!ZWSfWd!ZSe!TWW`!VWe[Y`WV!fa!Tgd`+!LZ[e![e![_badfS`f!TWUSgeW
V[XXWdW`f!fkbWe!aX!YSe!dWcg[dW!V[XXWdW`f!YSe!b[bW!e[lWe+!LZW!dSf[`Y!b^SfW!a`!fZW!ZWSfWd!i[^^![`V[USfW!iZ[UZ!YSe!fZW!ZWSfWd![e
VWe[Y`WV!fa!Tgd`+!LZW!fST^We)!eZai`!a`!bSYW!.1)!eZai!iZ[UZ!e[lW!b[bW![e!dWcg[dWV!Xad!fZW!V[efS`UW!Xda_!fZW!YSe!_WfWd!fa
fZW!ZWSfWd+!LZW!fST^W![e!Xad!`SfgdS^!YSe!Sf!S!ebWU[X[U!YdSh[fk!aX!+32!S`V!bdabS`W!Sf!S!ebWU[X[U!YdSh[fk!aX!.+22+
OZW`!e[l[`Y!YSe!^[`We)!US^Ug^SfW!fZdWW!&0'!SVV[f[a`S^!XWWf!aX!efdS[YZf!b[bW!Xad!WhWdk!W^Tai!geWV+!OZW`![`efS^^[`Y!fZW!YSe!^[`W)
Sha[V!YWff[`Y!V[df)!YdWSeW!ad!afZWd!XadW[Y`!_SfWd[S^![`!fZW!b[bW!Se!fZ[e!_Sk!USgeW!VS_SYW!fa!fZW!YSe!hS^hW)!iZ[UZ!_Sk!dWeg^f
[`!ZWSfWd!XS[^gdW+
>HE!GAR!LESEQ!RHNTKD!BE!CHECJED!SN!LAJE!RTQE!SHAS!IS! VIKK!RTOOKX!EMNTGH! GAR!SN!SHE!HEASEQ!AMD!AMX!NSHEQ!AOOKIAMCER
SHAS!LAX!BE!TRED!NM! SHE!RALE!LESEQ&!>HE! GAR!KIME! FQNL! SHE!LESEQ!VIKK!TRTAKKX!BE!NF! A! KAQGEQ! RIYE!SHAM! SHE!GAR!UAKUE
RTOOKIED! VISH! SHE! HEASEQ&!>HEQEFNQE! A! QEDTCSINM!NF! SHE! CNMMECSIMG! GAR! OIOE!VIKK! BE!MECERRAQX&! 9AJE!SHIR!QEDTCSINM
AR! CKNRE!SN! SHE!HEASEQ! AR!ONRRIBKE&
LZW!ZWSfWd!dWcg[dWe! S!YSe! egbb^k!aX!`af! ^Wee!fZS`!1#!&.-+/!U_'!iU!S`V!`af!_adW! fZS`!.1#!&02+3! U_'!iU+! ASe!egbb^k
bdWeegdWe!agfe[VW!aX!fZ[e!dS`YW!_Sk!dWeg^f![`![_bdabWd!Tgd`Wd!abWdSf[a`+!;!_[`[_g_!X^ai[`Y!ad!Vk`S_[U![`^Wf!bdWeegdW
&iZ[^W!fZW!ZWSfWd![e!dg``[`Y'!aX!1#!&.-+/U_'!iU![e!dWcg[dWV!fa!_S[`fS[`![`bgf!dSf[`Y!i[fZ!`a!_adW!fZS`!S!/v!bdWeegdW!Vdab
TWfiWW`!efSf[U! S`V! Vk`S_[U+!LZW! YSe! egbb^k!_gef!TW![`efS^^WV![`! SUUadVS`UW! i[fZ!fZW!;ASINMAK!4TEK! 5AR!3NDE$
1;=7@**+&))! ad!efS`VSdV!3=1! 2),/&)) ;ASTQAK!5AR!AMD!<QNOAME! 7MRSAKKASINM!3NDER)!Se!Sbb^[UST^W!S`V!S^^!Sbb^[UST^W
^aUS^!UaVWe+!C`efS^^!S!_S`gS^!eZgf*aXX!hS^hW!S`V!S!eWV[_W`f!fdSb!S`V!g`[a`!^aUSfWV!agfe[VW!fZW!ZWSfWd!bS`W^e)!eWW!@[YgdW!3+
>a!`af!geW!S!dWefd[Uf[hW!YSe!UaU]+!LZW!Xa^^ai[`Y!_[`[_g_!YSe!b[bW!e[lWe!SdW!dWUa__W`VWV!Xad!`SfgdS^!YSe!egbb^k!b[b[`Y)
eWW LST^W!/!a`!bSYW!.1+!@ad!^ai!bdWeegdW!EI!YSe)!b[bW!e[lW!_Sk!TW!dWVgUWV!Tk!.,1#)!i[fZ!S!_[`[_g_!b[bW!e[lW!aX!.,/#+
=ZWU]!Xad!Ua_b^[S`UW!i[fZ!^aUS^!UaVWe+
LZW!ZWSfWd!S`V!S`k!afZWd!YSe!Sbb^[S`UWe!_gef!TW!V[eUa``WUfWV!Xda_!fZW!YSe!egbb^k!b[b[`Y!ekefW_!Vgd[`Y!S`k!bdWeegdW
fWef[`Y!a`!fZSf!ekefW_)!&YdWSfWd!fZS`! ! IKC'+!LZW!ZWSfWd! S`V![fe!YSe!Ua``WUf[a`!_gef!TW!^WS]!fWefWV!TWXadW!b^SU[`Y!fZW
ZWSfWd! [`!abWdSf[a`+! 4U!TUZ![YK!LRGSK!ZU!ZKYZ! ZNK!MGY!ROTK'!MeW!eaSbk!iSfWd!ad! S`afZWd!`a`X^S__ST^W!_WfZaV+
NOTE
A manual main shut-off valve must be installedexternallyto the heater.
WARNING
DO NOT INSTALL THE GAS LINE UNION INSIDE THE HEATER CABINET. THIS WILL VOID YOUR WARRANTY.
SEDIMENTTRAPS
C`efS^^! S!eWV[_W`f!fdSb! S`V!g`[a`!^aUSfWV!agfe[VW! fZW
ZWSfWd! bS`W^e! [`!SU UadVS`UW! i[fZ! GSf[a`S^!UaVW
dWcg[dW_W`fe+!>a!`af! geW! S!dWefd[Uf[hW!YSe!UaU]+! LZW
eWV[_W`f!fdSb!eZS^^!TW!W[fZWd!S!fWW!X[ff[`Y!i[fZ!S!USbbWV
`[bb^W
Rev. H 9-5-12 MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide
V90;4/07<4-5W !2-;!(!;<-20!902=5-<487
7M!LAMX!<QNOAME!GAR!KIME!IMRSAKKASINMR$!SHE!GAR!RTOOKIEQ!AMD'NQ!IMRSAKKEQ!VIKK!TSIKIYE!A!SVN!RSAGE!QEGTKASINM!OQNCERR
VHEQE!BX!AS!SHE!RTOOKX!SAMJ!SHEX!VIKK!IMRSAKK!SHE!FIQRS!RSAGE!GAR!QEGTKASNQ$!VHICH!VNTKD!BE!AS!A!HIGHEQ!OQERRTQE$!TRTAKKX
)(!ORI&!>HIR!HIGHEQ!OQERRTQE!AKKNVR!FNQ!A!LTCH!KNMGEQ!DIRSAMCE!AMD!IM!A!LTCH!RLAKKEQ!OIOE!RIYE&!!>HEM!VISHIM!A!RHNQS
DIRSAMCE!NF!!SHE!ONNK!HEASEQ$!TRTAKKX!AQNTMD!*,!IMCHER$!SHEX!VIKK!IMRSAKK!A!RECNMD!QEGTKASNQ$!VHICH!IR!SHE!RECNMD!RSAGE$
AMD!SHIR!VNTKD!BE!RES!AS!SHE!QEPTIQED!IMKES!OQERRTQE!NF!!SHE!HEASEQ&
AKK!a7GY!?XKYY[XK!@KW[OXKSKTZ!3NGXZYb
Table 3. Table 4.
GAS PIPE SIZING
Table 2.
V90;4/07<4-5W !2-;!(!;<-20!902=5-<487
7M!LAMX!;ASTQAK!GAR!KIME!IMRSAKKASINMR$!SHE!GAR!RTOOKIEQ!AMD'NQ!IMRSAKKEQ!LAX!TSIKIYE!A!SVN!RSAGE!QEGTKASINM!OQNCERR
VHEQE!BX!AS!SHE!RSQEESR!LAIM!GAR!RTOOKX!SHEX!VIKK!IMRSAKK!SHE!FIQRS!RSAGE!GAR!QEGTKASNQ$!VHICH!VNTKD!BE!AS!A!HIGHEQ
OQERRTQE&!>HIR!HIGHEQ!OQERRTQE!IR!TRTAKKX!RES!AS!*!ORI!NQ!-!ORI!AMD!CAM!BE!FNQ!KNMG!DIRSAMCER!AMD!IM!A!LTCH!RLAKKEQ!OIOE
RIYE&!!>HEM!VISHIM!A!RHNQS!DIRSAMCE!NF!!SHE!ONNK!HEASEQ$!GEMEQAKKX!AQNTMD!*,!IMCHER$!SHEX!VIKK!IMRSAKK!A!RECNMD!QEGTKASNQ$
VHICH!IR!SHE!RECNMD!RSAGE&!>HIR!RECNMD!RSAGE!QEGTKASNQ!VNTKD!BE!RES!AS!SHE!LIMILTL!NOEQASIMG!OQERRTQE!FNQ!SHE!HEASEQ&
4NQ!Z;ASTQAK!5AR!<EMSAIQ!<NNK!6EASEQR[!SHE!LIMILTL!IR!.!IMCHER!?&3&
AKK!a7GY!?XKYY[XK!@KW[OXKSKTZ!3NGXZYb
Table 5. Table 6.
SNOITCENNOCENILSAGROFGNIZISEPIP
tooFcibuCrep.U.T.B0001tasaGlarutaN
tooFcibuCrep.U.T.B0052tasaGenaporP
LEDOM
”2/1 ”4/3 ”1 ”4/1-1 ”2/1-1 ”2 ”2/1-2
TAN ORP TAN ORP TAN ORP TAN ORP TAN ORP TAN ORP TAN ORP
571 - ’02 ’03 ’08 ’521 ’052 ’054 ’006 - - - - - -
002 - ’02 ’03 ’08 ’521 ’052 ’054 ’006 - - - - - -
052 - ’01 ’02 ’05 ’07 ’051 ’052 ’005 ’006 - - - - -
003 - - ’01 ’03 ’05 ’001 ’002 ’053 ’004 ’006 - - - -
004 - - - ’01 ’02 ’06 ’001 ’051 ’002 ’054 ’004 - - -
gniziSepiPsaG"erusserPhgiH"enOegatS
.TF.UCreP.U.T.B0052@ISP01
HTGNELEPIPTNELAVIUQEMUMIXAM
ledoM .tF05ot0 .tF001ot05 .tF051ot001
004hguorht571 .ni2/1 .ni2/1 .ni2/1
gniziSepiPsaG"erusserPwoL"owTegatS
.C.W.ni41tates2egatS
HTGNELEPIPTNELAVIUQEMUMIXAM
ledoM .tF01ot
0 .
tF02ot01
004hguorht571 .ni4/3 .ni4/3
gniziSepiPsaG"erusserPhgiH"enOegatS
.TF.UCreP.U.T.B0001@ISP2
HTGNELEPIPTNELAVIUQEMUMIXAM
ledoM .tF05ot0 .tF001ot05 .tF051ot001
003hguorht571 .ni2/1 .ni2/1 .ni2/1
004 .ni4/3 .ni4/3 .ni4/3
.TF.UCreP.U.T.B0001@ISP5
004hguorht571 .ni2/1 .ni2/1 .ni2/1
gniziSepiPsaG"erusserPwoL"owTegatS
.C.W.ni7tates2egatS
HTGNELEPIPTNELAVIUQEMUMIXAM
ledoM .tF01ot
0 .
tF02ot01
003hguorht571 .ni4/3 .ni4/3
004 .ni4/3 .ni1
.C.W.ni7tates2egatS
004hguorht571 .ni4/3 .ni1
MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide Rev. H 9-5-12
TESTING GAS PRESSURE
DW!1QY!6TW^
C^Q[KP
DW!7IZ
FIT]M!FMV[
FMV[
AYMZZ\YM!DIX
DW!8QOP!CQLM
WN!4QNNMYMV[QIT
AYMZZ\YM!7I\OM
DW!=W^!CQLM!WN
4QNNMYMV[QIT!AYMZZ\YM!7I\OM
AYMZZ\YM!DIX
9VTM[
Figure 7.
Table 7.
To Air Flow
Switch
ToGas
ValveVent
C
onnection
for Service
C
onnection
for Test
<WXadW!abWdSf[`Y!fZW!ZWSfWd)!fZW!ZWSfWd!S`V![fe!YSe!Ua``WUf[a`e!_gef!TW!^WS]!fWefWV+!4U!=>B![YK!GT!UVKT!LRGSK!ZU!ZKYZ
LUX!RKGQY'!LWef!S^^!YSe!Ua``WUf[a`e!Xad!^WS]e!i[fZ!eaSbk!iSfWd!ad!S`afZWd!`a`*X^S__ST^W!_WfZaV!&eWW!bSYW!.1'+
LZW!ZWSfWd!S`V![fe![`V[h[VgS^!eZgf*aXX!hS^hW!_gef!TW!V[eUa``WUfWV!Xda_!fZW!YSe!egbb^k!b[b[`Y!ekefW_!Vgd[`Y!S`k!bdWeegdW
fWef[`Y!aX!fZSf!ekefW_!Sf!fWef!bdWeegdWe![`!WjUWee!aX!.,/!be[Y!&0+2!]IS'+
LZW!ZWSfWd!_gef!TW![ea^SfWV!Xda_!fZW!YSe!egbb^k!ekefW_!Tk!U^ae[`Y![fe![`V[h[VgS^!_S`gS^!eZgf*aXX!hS^hW!Vgd[`Y!S`k!bdWeegdW
fWef[`Y!aX!fZW!YSe!egbb^k!Sf!fWef!bdWeegdWe!WcgS^!fa!ad!^Wee!fZS`!.,/!be[Y!&0+2!]IS'+
WARNING
Risk of fire and explosion.
Improper installation, incorrect adjustment, alteration, service, ormaintenanceof the Combination
Gas Control Valve can lead to fire orexplosion, causing loss of life, personalinjury, and/or property damage. If it is necessary
to adjust the gas valve, this must be done by only by a qualified service agency.
These instructions are for the use of
qualified service technicians only!
LZ[e!Sbb^[S`UW
Rev. H 9-5-12 MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide
OUTDOORINSTALLATION
@ad!ZWSfWde!^aUSfWV!agfVaade)!ge[`Y!fZW!Tg[^f*[`!efSU]^Wee!hW`f[`Y!ekefW_+
WARNING
Risk of explosion if a unit burning propane gas is installed in a pit or other low spot.
Propane is heavier than air. Do not
install the heater using propane in pits or other locations where gas might collect. Consult your local building code officials to
determine installation requirements and specific installation restrictions of the heater relative to propane storage tanks and
filling equipment. Installation must meet the requirements for the Standard for the Storage and Handling of Liquid Petroleum
Gases,ANSI/NFPA 58 (latest edition) intheU.S., or CAN/CSA B149.2 (latest edition) inCanada. Consult localcodes and fire
protection authorities about specific installation restrictions.
EaUSfW!fZW!ZWSfWd! a`! S!^WhW^!egdXSUW! [`! S`!abW`! SdWS!fZSf![e!bdafWUfWV!Xda_! VdS[`SYW!ad! dg`*aXX+
C`efS^^!fZW!ZWSfWd![`!S`!SdWS!iZWdW!^WShWe!ad!afZWd!VWTd[e!i[^^!`af!Ua^^WUf!a`!ad!Sdag`V!fZW!ZWSfWd+
La!Sha[V!VS_SYW!fa!fZW!W^WUfda`[U!Ua_ba`W`fe![`!fZW!ZWSfWd)!fS]W!USdW!fa!bdWhW`f!bda^a`YWV!WjbaegdW
fa!Vd[h[`Y!eagdUWe!aX!iSfWd!&egUZ!Se!^Si`!ebd[`]^Wde)!ZWShk!daaX!dg`aXX)!ZaeWe)!WfU+'+!;ha[V!abWdSf[a`
[`!bWde[efW`f)!WjfdW_W)!_a[ef!ad!eS^fk!W`h[da`_W`fe+
C`!WjfdW_W!iWSfZWd)!eZgf!Vai`! fZW! ZWSfWd!S`V!V[eUa``WUf! fZW!baiWd! fa! [f! g`f[^!fZW! iWSfZWd!ZSe
_aVWdSfWV+!C`!SdWSe!egT\WUf!fa!Zgdd[US`We!ad!hWdk!Z[YZ!i[`Ve)!bgdUZSeW!fZW!<a^f!>ai`!<dSU]Wf!D[f)
I,G!13-405+
HEATER CLEARANCES – OUTDOOR
IMPORTANT!
• In an outdoor installation it is important to ensure water is diverted
from overhangingeveswithapropergutter/drainagesystem.The heater
must be setona level foundation for proper drainage.
• Thisunitshallnot be operatedoutdoorsattemperaturesbelow -20
o
F.
CX!fZW!ZWSfWd
MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide Rev. H 9-5-12
Figure9.
VENTING GUIDELINES
OUTDOOR INSTALLATION
Force
Air Inlet
Property Line
4'
4'
4'
3'
SIDE VIEW
Building
Frombuildingwall
ExhaustGrill
(Vent)
6 in
From window or door
Mustbe at least 3ft. aboveany forced
air inlet locatedwithina 10ft. radius.
Vent Termination:
Mustbe located6 in. away fromthebuilding
wall and thefollowingdistances away fromany building
wall openings, included but not limited toventedeaves,
doors, windows, gravity airinlet:
4 ft.below,
4 ft.horizontally
Rev. H 9-5-12 MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide
INDOORVENTING —General Requirements
Vertical only
;`!Sbb^[S`UW!fZSf!abWdSfWe!i[fZ!S!MNMONRISIUE!hW`f!efSf[U!bdWeegdW!S`V!i[fZ!S!hW`f!YSe!fW_bWdSfgdW!fZSf!Sha[Ve!WjUWee[hW
Ua`VW`eSfW!bdaVgUf[a`![`!fZW!hW`f)!eWW!bSYWe!/.*/0+
Vertical orHorizontal
;`!Sbb^[S`UW!fZSf!abWdSfWe!i[fZ!S!ONRISIUE!hW`f!efSf[U!bdWeegdW!S`V!i[fZ!S!hW`f!YSe!fW_bWdSfgdW!fZSf!Sha[Ve!WjUWee[hW
Ua`VW`eSfW!bdaVgUf[a`![`!fZW!hW`f)!eWW!bSYWe!/1*/3+
CX!kag!SdW! Ua`e[VWd[`Y!Ua``WUf[`Y!fZ[e! ZWSfWd!fa!S!bdW*Wj[ef[`Y!hW`f!ekefW_)!_S]W!egdW!fZSf!fZW!hW`f!ekefW_! _WWfe!fZW
Sbbdabd[SfW!hW`f[`Y!dWcg[dW_W`fe!Se!Y[hW`![`!fZ[e!_S`gS^!a`!bSYWe!.6*/5+!CX!`af)!dWb^SUW!fZW!hW`f!ekefW_+!4>!=>B!geW
S!VdSXf!ZaaV!i[fZ!fZ[e!ZWSfWd+
LZW!FSefWdLW_b!ZWSfWde!SdW!USbST^W!aX!S!/4-*VWYdWW!V[eUZSdYW!dafSf[a`!S`V!abWdSfW!i[fZ!S!bae[f[hW!hW`f!efSf[U!bdWeegdW
S`V!i[fZ!S!hW`f!YSe fW_bWdSfgdW!^Wee!fZS`!1--~!@!&/-1~!='+!LZW!fafS^!^W`YfZ!aX!fZW!Zad[la`fS^!dg`!_gef!`af!WjUWWV!fZW ^W`YfZ
fZSf![e!^[efWV![`!fST^W!..!a`!bSYW!/1+
HEATER CLEARANCES —General Requirements
LZW!Xa^^ai[`Y!U^WSdS`UWe!_gef!TW!_S[`fS[`WV!Xda_!Ua_Tgef[T^W!egdXSUWe7
TOP ..............................6in.(15cm)
EXHAUST SIDE ..........6in.(15cm)
HEADER SIDE............6 in. (15cm)
DOOR PANELS† ........6in. (15cm)
=UZK &o'!@ad!eWdh[UW!SUUWee![f![e!SVh[eST^W!fa!S^^ai!Xad!egXX[U[W`f!U^WSdS`UW
a`!Sf!^WSef!a`W!Vaad!bS`W^+!LZW!ZWSfWd![e!VWe[Y`!UWdf[X[WV!Tk!=K;!C`fWd`Sf[a`S^
Xad![`efS^^Sf[a`!a`!Ua_Tgef[T^W!X^aad[`Y+!@ad![`efS^^Sf[a`!a`!USdbWf[`Y)!fZW
ZWSfWd!_gef!TW!_ag`fWV!a`! S! _WfS^!ad!iaaV! bS`W^! fZSf!WjfW`Ve!Sf!^WSef
fZdWW![`UZWe!&.-U_'!TWka`V!fZW!TSeW!aX!fZW!ZWSfWd+!CX!fZW!ZWSfWd![e![`efS^^WV
[`!S!U^aeWf!ad!S^UahW)!fZW!W`f[dW!X^aad!eZS^^!TW!UahWdWV!Tk!fZW!bS`W^+!H`!S`
agfVaad!eZW^fWd![`efS^^Sf[a`)!fZW!WjZSgef!V[eUZSdYWe![`fa!S!hW`f!b[bW+!Hd[W`f
fZW!ZWSfWd!ea!fZSf!fZW!hW`f!b[bW!VaWe!`af![`fWdXWdW!i[fZ!SV\gef_W`f!aX!fZW
abWdSf[`Y!Ua`fda^e+!LZW!Ua`fda^!bS`W^!^aUSfWV!a`!fZW!fab!bS`W^!US`!TW!dafSfWV
fa!S`k! aX! fZW!fZdWW! e[VWe!aX!fZW!ZWSfWd! Xad! WSek!SUUWee+! BaiWhWd)!fZW
Ua`fda^!bS`W^!_gef!`af!TW!^aUSfWV!a`!fZW!e[VW!iZWdW!fZW!hW`f![e!^aUSfWV+
LZW!ZWSfWd![e!egbb^[WV!Xda_!fZW!XSUfadk!i[fZ!S!Tg[^f*[`!efSU]^Wee!agfe[VW!hW`f!Xad!agfVaad![`efS^^Sf[a`+!JW_ahW!fZW!agfe[VW
hW`f!UahWd!Xad!agfVaad!eZW^fWd![`efS^^Sf[a`+
6 in.*
6 in.*
6 in.
6 in.
6WY!ZMY]QKM!IKKMZZ
%
!Q[!QZ!IL]QZIJTM
MASTERTEMP
®
Pool and Spa Heater Installation and User’s Guide Rev. H 9-5-12
CAUTION
Chemicals should not be stored near the heater installation. Combustion air can be contaminated by corrosive
chemical fumes which can void the warranty.
COMBUSTIONAIR SUPPLY
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Pentair 250K BTU/HR Installation and User Manual
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