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Pentair MT - page 1
Installation and Operation Instructions for MegaTherm Pool Heating Boiler Model MT Sizes 2000-5000 FOR YOUR SAFETY : This product must be inst alled and serviced by a professional service technician, qualified in hot water boiler installation and maintenance. Improper installation and/or operation could create carbon monoxide gas in flue gases whic ...
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Pentair MT - page 2
Page 2 Pentair Water Commercial Pool and Spa T ABLE OF CONTENTS SECTION 1. General Information 1A. Introduction ................................................... 3 SECTION 2. Installation 2A. Boiler Placement .......................................... 3 2B. Installation of Indoor Boilers ......................... 4 2B-1. Combustion A ir Supply .. ...
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Pentair MT - page 3
MegaTherm Commercial Pool Heating Boiler Page 3 SECTION 1. General Information IMPORTANT WARNING: The MegaTherm Model MT commercial pool boilers must be used with potable water only. For pools containing salt water, a specially equipped boiler must be used. Consult your distributor or factory representative. The pool boiler must be installed in acc ...
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Pentair MT - page 4
Page 4 Pentair Water Commercial Pool and Spa All boilers must be installed on a non-combustible floor. Under no circumstances can boilers be installed on carpeting. The National Fuel Code allows a boiler to be placed on other than a non combustible surface when such an installation complies with the local codes. This code specifies the surface unde ...
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Pentair MT - page 5
MegaTherm Commercial Pool Heating Boiler Page 5 2B-2. Venting 1. Model MT boilers have built-in draft diverters for natural draft operation and must not be connected into any portion of a mechanical draft system under positive pressure. The flue outlet must be connected to a clear, unobstructed vent of adequate capacity terminating above the highes ...
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Pentair MT - page 6
Page 6 Pentair Water Commercial Pool and Spa 4. Liquified petroleum is heavier than air. Therefore, the pool boiler should not be installed in pits or other locations where gas could accumulate. The boiler should be located a safe distance from LP gas storage and filling equipment. Consult local codes and fire protection authorities for advice rela ...
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Pentair MT - page 7
MegaTherm Commercial Pool Heating Boiler Page 7 Arrangement of gas train components for on-off firing are shown schematically in the Gas Piping Diagram (see Figure 6). 2F. Electrical Wiring WARNING The boiler must be electrically grounded in accordance with the most recent edition of the National Electrical Code, ANSI/NFPA 70, and in Canada, follow ...
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Pentair MT - page 8
Page 8 Pentair Water Commercial Pool and Spa Therefore, the temperature difference between the inlet and out pipes will be so small as to be difficult to sense by touching the two pipes. 2I. Boiler By-Pass Piping All Model MT pool boilers are equipped with an automatic flow control valve. Do not install a manual bypass valve unless the normal filtr ...
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Pentair MT - page 9
MegaTherm Commercial Pool Heating Boiler Page 9 pool. If this condition exists, follow this procedure to adjust the switch: 1. With the boiler on, the filter pump running and the filter clean, slowly increase the pressure setting until the boiler shuts off. Slowly decrease the pressure setting until the boiler comes back on. Decrease the pressure s ...
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Pentair MT - page 10
Page 10 Pentair Water Commercial Pool and Spa 3A-3. Hi-Limit Checkout After running the boiler for a long enough period to bring the water temperature within the range of the hi-limit, slowly back off the high limit setting until the unit shuts off. The main burners should re-ignite when the hi-limit is turned back up to its original setting. The h ...
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Pentair MT - page 11
MegaTherm Commercial Pool Heating Boiler Page 11 3F. Time Clock Operation During the initial warm-up period, the boiler must run continuously. Therefore, remove all time clock stops until the pool water reaches a temperature of at least 70 o F. When resetting the time clocks, be sure to allow the filter pump and boiler enough time to maintain the p ...
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Pentair MT - page 12
Page 12 Pentair Water Commercial Pool and Spa SECTION 4. Maintenance 1. At start-up and every six (6) months thereafter, the pilot and main burner flame should be observed for proper performance (see Figures 9 and 10; see attached lighting and shutdown instructions for proper pilot flame pattern). If flame has the appearance of “sooting” tips, ...
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Pentair MT - page 13
MegaTherm Commercial Pool Heating Boiler Page 13 SECTION 5. T roubleshooting and Analysis of Service Problems 1. For proper service and problem diagnosis of the boiler and system, the following tools are required: a. Gas pressure test kit with range from zero to 14" W.C. Either a slack tub manometer or an accurate gas pressure gauge is accepta ...
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Pentair MT - page 14
Page 14 Pentair Water Commercial Pool and Spa SECTION 6. Conversion of Model MT Pool Boilers From Indoor to Outdoor Models Please read the following instructions with Figure 11. Figure 12 shows the conversion completed. Please follow the instructions in their numerical order, failure to do this will cause problems on assembly. 6A. SECTION I (See Fi ...
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Pentair MT - page 15
MegaTherm Commercial Pool Heating Boiler Page 15 Figure 12. Outdoor Parts. Referenced on page 14. ...
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Pentair MT - page 16
Page 16 Pentair Water Commercial Pool and Spa SECTION 7. Parts Description and Order Numbers I=Indoor, E=Outdoor. Quantity is 1, unless otherwise noted. K ey Size Size Size Size Size Size Size No. Description 2000 I 2450 I 3050 I 3500 I 4050 I 4500 I 5000 I 2200 E 2800 E 3200 E 3600 E 4000 E 4500 E 1. Base Weldment Assembly 20067201 20067202 200672 ...
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Pentair MT - page 17
MegaTherm Commercial Pool Heating Boiler Page 17 Figure 13. Parts Identification. *Indoor parts only **For tiles, see Figure 15. ...
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Pentair MT - page 18
Page 18 Pentair Water Commercial Pool and Spa I=Indoor, E=Outdoor. Quantity is 1, unless otherwise noted. K ey Size Size Size Size Size Size Size No. Description 2000 I 2450 I 3050 I 3500 I 4050 I 4500 I 5000 I 2200 E 2800 E 3200 E 3600 E 4000 E 4500 E 22. Lock Washer - 3 / 8 " F0010800 F0010800 F0010800 F0010800 F0010800 F0010800 F0010800 (2) ...
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Pentair MT - page 19
MegaTherm Commercial Pool Heating Boiler Page 19 Figure 14. Built-in Automatic Control Valve. Rod retainer 101337 Spring shaft S00196 Spring Spring guide S00116 Spring Valve disk 101335 Main casting S-20002 IN - Return from the pool To heater inlet From heater outlet OUT - Supply to the pool K ey Size Size Size Size Size Size Size No. Description 2 ...
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Pentair MT - page 20
Figure 15. Tile Assembly. © 2006 Pentair W ater Pool and Spa, Inc. All rights reserved This document is subject to change without notice 1620 Hawkins Ave., Sanford, NC 27330 • (919) 566-8000 10951 West Los Angeles Ave., Moorpark, CA 93021 • (805) 553-5000 T rademarks and disclaimers MegaTher m and the P entair Commercial P ool and Spa logo are ...
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