MiniMax® NT Series - H2Oco.com

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Section III.Installation14INDOOR VENTING — General RequirementsThe vent pipe must be the same size or larger. The MiniMax NT heaters are capable of a 360-degree discharge rotationand operate with a positive vent static pressure and with a vent gas temperature less than 400° F. The total length of thehorizontal run must not exceed the length that is listed below in the tables.NOTEThe allowable vent runs for each vent pipe diameter are different and can not be exceeded.Each 90-degree elbow reduces the maximum horizontal vent run by 8 feet and each 45-degree elbow inthe vent run reduces the maximum vent run by 4 feet. See the tables below for the maximum ventlengths using 90-degree and 45-degree elbows.The MiniMax NT is a “Category III” appliance and is an induced-draft pool and spa heaterwhich uses positive pressure to push flue gases through the vent pipe to the outside. Thisrequires a completely sealed vent system—single wall vent pipe with sealed-seams andjoints. Flue gases under positive pressure may escape into the dwelling with any cracksor loose joints in the vent pipe, or improper vent installation. The vent pipe must be of asealed-seam construction, such as those listed for use with “Category III Appliances”, andfor operating temperatures less than 400° F. The use of listed thimbles, roof jacks and/orside vent terminals are required; and the proper clearances to combustible materials mustbe maintained in accordance with type of vent pipe employed—in the absence of a clearancerecommendation by the vent pipe manufacturer, the requirements of the Uniform MechanicalCode should be met. The ventilation air requirements for the MiniMax NT heater can befound on page 16. It is recommended that vent runs over18 feet be insulated to reduce condensation related problemsand/or the use of a condensate trap in the vent run close to the inch Vent Pipeheater may be necessary in certain installations such as cold Number ofMaximumclimates. The MiniMax NT heater is suitable for through-thewallventing, see table and dimensions below.ElbowsVent Run90°5°(Feet)Recommended sources for Side-wall vent hood terminalsinclude: The Field Controls Co. (2308 Airport Road, Kingston,NC 28501, (800)742-8368) and Tjernlund Products Inc. (1601Ninth Street, White Bear Lake, MN 55110, (800) 255-4208)—consult manufacturer for model information and availability.CAUTIONDo NOT combine exhaust vent pipes to a common exhaustvent in multiple unit installations. Run separate vent pipes.4 inch Vent PipeNumber ofElbows90°45°MaximumVent Run(Feet)1 — 221 1 181 2 142 — 145 5 inch Vent PipeNumber ofElbows4 90°45°Table 8.MaximumVent Run(Feet)0 2 452 2 291 — 452 3 251 1 412 4 211 2 373 — 291 3 333 1 252 — 373 2 212 1 334 — 21Table 9.THROUGH WALL VENT KITS FOR HEATERSCFPartNumberDim.ADim.BDim.CDim.DDim.EDim. FBAE4715324 in. Dia.6 in. Dia.8 ½ in.6 5/16 in.125/8 in.10 5/8 in.4715435 in. Dia.8 in. Dia.8 ½ in.8 in.125/8 in.10 5/8 in.DTable 10. Figure 5.P/N 472235 Rev. D 12-22-04
Section III.Installation15INDOOR INSTALLATION (USA ONLY)OUTDOOR SHELTER INSTALLATION (CANADA)See page 16 for Vent AdaptorsAll products of combustion and vent gases must becompletely removed to the outside atmosphere through avent pipe which is connected to the stack adaptor. A ventpipe extension of the same size must be connected to thevent adaptor and extended at least 2 feet higher than highestpoint of the roof within a 10 foot horizontal radius, and atleast 3 ft. higher than the point at which it passes throughthe roof, or as permitted by local code; see Figures 6, 7and 12. The vent should terminate with an approved ventcap (weather cap) for protection against rain or blockageby snow. Insulated vent pipe and an approved roof jackshall be employed through the roof penetration.The heater must be located as close as practical to achimney or gas vent.CAUTIONThe heater should be installed at least 5 feet awayfrom the pool or spa.The heater must be placed in a suitable room with adequateventilation and on a leveled floor, where leakage from heatexchanger or water connections will not result in damageto the area adjacent to the heater or the structure. Whensuch locations cannot be avoided, it is recommended thata suitable drain pan with adequate drainage, be installedunder the heater. The pan must not restrict air flow.It is recommended to install the heater on fire-resistanceslabs. Do not install the heater directly on a combustiblewood floor without placing a non-combustible materialbetween the floor and the heater. Heaters must NEVERbe installed directly on carpeting.Installations in basements, garages, or undergroundstructures where flammable liquids may be stored musthave the heater elevated 18 inches from the floor. Thefollowing minimum clearances from combustible materialsmust be provided.Vent Cap andRiser Furnishedby InstallerOptionalSideWall VentVent Cap andRiser Furnishedby InstallerOptionalSideWall VentHeaterHeaterChimney or Gas VentChimney or Gas VentOutlet AirOpeningInlet AirOpeningOutlet Air OpeningInlet Air OpeningFigure 7.The heater should not be installed closer than 6 inches toany fences, walls or shrubs at any side or back, norcloser than 18 inches at the plumbing side. A minimumclearance of 24 inches must be maintained at the front ofthe heater.6"Figure 6.SIDEOFHEATERINDOOR(Outrdoor Shelter)INCHESINSTALLATIONOUTDOORINCHES24"DOOR6"WATER PIPING 1818BLANK6 6REAR6 6TOP *18Open Un-roofed Area18"FRONT2424* To ceiling or roof.Table 11.Figure 8.Rev. D 12-22-04 P/N 472235
Page 1 and 2: MiniMax ® NT SeriesPool & Spa Heat
Page 4 and 5: Section I. Heater Identification In
Page 6 and 7: Section II.Introduction6CODE REQUIR
Page 8 and 9: Section III.Installation8MANUAL BY-
Page 10 and 11: Section III.Installation10Reversibl
Page 12 and 13: Section III.Installation12GAS PIPE
Page 16 and 17: Section III.Installation16COMBUSTIO
Page 18 and 19: Section III.Installation18OUTDOOR I
Page 20 and 21: Section III.Installation20WIRING DI
Page 22: Section IV.Operation22SAFETY CONTRO
Page 25: Section IV.Operation25Figure 27.Rev
Page 28 and 29: Section V.TroubleshootingTroublesho
Page 30 and 31: Section VI.MaintenanceMaintenance I
Page 32 and 33: Section VI.MaintenanceCHEMICAL BALA
Page 34 and 35: 34P/N 472235 Rev. D 12-22-04
Page 36 and 37: 36REPLACEMENT PARTSNT TSI w/DDTC
Page 38 and 39: 38NOTESP/N 472235 Rev. D 12-22-04
Page 40: 40SAVE THESE INSTRUCTIONSPentair Wa

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