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Pentair MT Sizes 500 manual

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Table of contents for the manual

  • Page 1

    Model MT Sizes 500 - 1825 IMPORTANT: Store these instructions in the pocket provided on the heater Installation and Operation Instructions for MegaTherm Pool Heating Boiler W ARNING If the information in this manual is not followed exactly , a fire or explosion may result causing property damage, personal injury or loss of life. Do not store or use[...]

  • Page 2

    Pentair Water Commercial Pool and Spa Page 2 T ABLE OF CONTENTS SECTION 1. General Information 1.1 Introduction ................................................... 3 1.2 Heater Identification ..................................... 3 1.3 Primary/Secondary Pump and Piping ........... 3 1.4 Certifications ...............................................[...]

  • Page 3

    MegaTherm Commercial Pool Heating Boiler Page 3 SECTION 1. General Information 1.1 Introduction This manual provides information for the installation and operation of MegaTherm model MT pool heating boilers. It is strongly recommended that all application and installation procedures be reviewed completely before proceeding with the installation. Co[...]

  • Page 4

    Pentair Water Commercial Pool and Spa Page 4 SECTION 2. Inst allation 2.1 Boiler Placement The pool heating boiler must be placed to provide specific clearances on all sides for maintenance and inspections. There must also be minimum distances maintained from combustible surfaces. These clearances also apply to noncombustible materials because the [...]

  • Page 5

    MegaTherm Commercial Pool Heating Boiler Page 5 Figure 4. Typical Boiler Installation on Roof Using 4x4 Stringer. Figure 5. Installation on Concrete Blocks or Tile. b. Forced-Air Ventilation In the United States: any equipment which exhausts air from the boiler room can deplete the combustion air supply or reverse the natural draft action of the ve[...]

  • Page 6

    Pentair Water Commercial Pool and Spa Page 6 Always use double-wall or insulated vent pipe (Type B or equivalent). In cold weather, uninsulated outside vents can chill the rising flue products blocking the natural draft action of the venting systems. This can create a health hazard by spilling flue products in the boiler room. Avoid oversized vent [...]

  • Page 7

    MegaTherm Commercial Pool Heating Boiler Page 7 flamme d’une chandelle ou la fumée d’une cigarette, d’une cigare ou d’une pipe. 6. Une fois qu’il a été déterminé, selon la méthode indiquée ci-dessus, que chaque appareil raccordé au systéme d’évacuation est mis à l’air libre de façon adéquate. Remettre les portes et les fe[...]

  • Page 8

    Pentair Water Commercial Pool and Spa Page 8 6. The correct burner manifold gas pressure is stamped on the rating plate. The regulator is preset at the factory and normally requires no further adjustment. The gas manifold and control assembly is factory tested and conforms to the safe lighting and other performance criteria specified in the latest [...]

  • Page 9

    MegaTherm Commercial Pool Heating Boiler Page 9 IMPORTANT NOTE: The pool filter pump and boiler must be electrically interlocked so the boiler cannot come on unless the pump is running and there is full flow in the filter piping where the boiler is connected. If the pool filter pump operation is intermittent the boiler must be shut off prior to pum[...]

  • Page 10

    Pentair Water Commercial Pool and Spa Page 10 2.8 Temperature Sensor Placement and Installation A temperature sensor with 15 feet (5m) of cable and an immersion well assembly are supplied with the boiler. These must be installed in the field. Refer to Figures 10 through 11. 1. The immersion well body is provided with a 1/2" NPT. Mount the imme[...]

  • Page 11

    MegaTherm Commercial Pool Heating Boiler Page 11 Figure 13. Controls Location. Rating Plate Manual Pilot Valve Water Circulating Pump Safety Gas Valve Operating/Safety Gas Valve Ignition Control Flow Switch Pressure Relief Valve Power (On/Off/Auto) Switch Pump Time Delay Relay Operating Control Terminal Strip In Out Hi-Limit Manual Main Gas Valve S[...]

  • Page 12

    Pentair Water Commercial Pool and Spa Page 12 On a newly constructed pool, be sure to run the filter pump long enough for a complete “turn-over” of the pool water before starting heater so that dirt and residue from construction will have been removed. The filter may clog rapidly during this period, causing severe cycling of the heater. 1. Befo[...]

  • Page 13

    MegaTherm Commercial Pool Heating Boiler Page 13 If the inlet temperature is LESS THAN 100°F: With the bypass valve “A” fully open, throttle (turn down) outlet valve “B” slightly. Observe the inlet thermometer for 5 minutes to see where the inlet temperature stabilizes. If it remains under 100°F, throttle outlet valve “B” a little mor[...]

  • Page 14

    Pentair Water Commercial Pool and Spa Page 14 and 1825 pool temperature should be maintained at 70°F (21°C) or above. See item 3 in the next section. 3.7 Winter Operation Complete Shutdown 1. To shut down the heater for periods of several months or more, turn manual main gas valve and pilot gas valve to "OFF." Where danger of freezing d[...]

  • Page 15

    MegaTherm Commercial Pool Heating Boiler Page 15 should check the water temperature with an accurate thermometer; spa or hot tub thermostats may err in regulating water temperatures by as much as four degrees Fahrenheit (2.2°C). e. Persons with a medical history of heart disease, circulatory problems, diabetes or blood pressure problems should obt[...]

  • Page 16

    Pentair Water Commercial Pool and Spa Page 16 Caution Black carbon or green soot on a dirty heat exchanger can, under certain conditions, be ignited by a random spark or open flame. To prevent this unlikely occurrence, dampen the soot deposits with wet brush or fine water spray before servicing or cleaning the heat exchanger. 9. Clean heat exchange[...]

  • Page 17

    MegaTherm Commercial Pool Heating Boiler Page 17 1. Symptom: heater is pounding, knocking or emitting steam from relief valve Possible Cause What to Do A. Low or no water flow A. Is the heater wired into the filter pump circuit so that the heater cannot fire (most likely). unless the pump is running? Check to see that all valves in system are open [...]

  • Page 18

    Pentair Water Commercial Pool and Spa Page 18 SECTION 6. Part s Description and Order Numbers Key Description Size Size Size Size Size Size Size Size Size No 500 600 715 850 1010 1200 1430 1670 1825 Jacket and Combustion Chamber Components 1 Top Panel Assembly 10535701 10535702 10535703 10535704 10535705 10535706 10535707 10535708 10535709 2 Spacer[...]

  • Page 19

    MegaTherm Commercial Pool Heating Boiler Page 19 Figure 17. Parts Identification.[...]

  • Page 20

    Pentair Water Commercial Pool and Spa Page 20 Key Description Size Size Size Size Size Size Size Size Size No 500 600 715 850 1010 1200 1430 1670 1825 28 Middle Front Panel {Indoor} 10554401 10554402 10554403 10554404 10554405 10554406 10554407 10662008 10662009 29 Sweep Sheet, Flue Collector {Indoor} 10533901 10533902 10533903 10533904 10533905 10[...]

  • Page 21

    MegaTherm Commercial Pool Heating Boiler Page 21 Key Description Size Size Size Size Size Size Size Size Size No 500 600 715 850 1010 1200 1430 1670 1825 37 Inlet/Outlet Header, Machined 10364500 10364500 10364500 10364500 10364500 10364500 10364500 10364500 10364500 [S0094300 Glassed Cast Iron] Inlet/Outlet Header, Machined 10364501 10364501 10364[...]

  • Page 22

    Pentair Water Commercial Pool and Spa Page 22 Key Description Size Size Size Size Size Size Size Size Size No 500 600 715 850 1010 1200 1430 1670 1825 Gas System 55 Burner Tray, IID, On/Off, 10550601 10550602 10550603 10550604 10550605 10550606 10550607 10550608 10550609 Single Sect. Manifold {Nat.} Burner Tray, IID, On/Off, 20097401 20097402 20097[...]

  • Page 23

    MegaTherm Commercial Pool Heating Boiler Page 23 Key Description Size Size Size Size Size Size Size Size Size No 500 600 715 850 1010 1200 1430 1670 1825 65 Manifold Cover Plate Assembly 10552901 10552902 10552903 10552904 10552905 10552906 10552907 10552908 10552909 {Single Pilot} 66 Burner Anti-Rotation Bracket 10525301 10525302 10525303 10525304[...]

  • Page 24

    Pentair Water Commercial Pool and Spa Page 24 Figure 18. Tile Assemblies. When ordering tiles: Assembly number is for all tiles. Part numbers shown for the front of unit are the same for the rear tiles. Check dimensions of old tile as shown here to confirm part number.[...]

  • Page 25

    MegaTherm Commercial Pool Heating Boiler Page 25 Figure 19. Outdoor Parts. 1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 17 18 19 13 20[...]

  • Page 26

    Pentair Water Commercial Pool and Spa Page 26 Key Description Size Size Size Size Size Size Size Size Size No 500 600 715 850 1010 1200 1430 1670 1825 31 Control Box Cover {Outdoor} 10630300 10630300 10630300 10630300 10630300 10630300 10630300 10630300 10630300 32 Non-Combustible Base/Tile 1060230110602302 10602303 10602304 10602305 10602306 10602[...]

  • Page 27

    MegaTherm Commercial Pool Heating Boiler Page 27 Key Description Size Size Size Size Size Size Size Size Size No 500 600 715 850 1010 1200 1430 1670 1825 16 Front Windshield 10659101 10659102 10659103 10659104 10659105 10659106 10659107 10659108 10659109 17 Upper Front Panel 10658901 10658902 10658903 10658904 10658905 10658906 10658907 10658908 10[...]

  • Page 28

    Pentair Water Commercial Pool and Spa Page 28[...]

  • Page 29

    MegaTherm Commercial Pool Heating Boiler Page 29[...]

  • Page 30

    Pentair Water Commercial Pool and Spa Page 30[...]

  • Page 31

    MegaTherm Commercial Pool Heating Boiler Page 31[...]

  • Page 32

    © 2006 Pentair Water P ool and Spa, Inc. All rights reserved This document is subject to change without notice 1620 Hawkins A ve ., Sanf ord, NC 27330 • (919) 566-8000 10951 W est Los Angeles A v e., Moorpark, CA 93021 • (805) 553-5000 T rademarks and disclaimer s MegaTher m and the P entair Commercial P ool and Spa logo are trademarks of P en[...]