MiniMax NT® Pool Spa Heater Venting

DISCLAIMER: This is not an installation manual, the information contained in this page was prepared to help you determine which vent adopter kits go with which heater(s), and what on-site preparation maybe needed to perform proper venting of a MiniMax heater. Information on Pentair 2005 Catalog (page 97) shows a selection of indoor and outdoor vent kits starting with model numbers: 4602xx - These are for use only with the older MiniMax Plus Heaters. Installation of a MiniMax heater must be performed by a qualified pool professional. For more detailed, accurate and up-to-date information about venting a MiniMax heater contact the manufacturer Pentair Pool Products at: http://www.pentairpool.com/contact_us/index.htm

General Requirements

Indoor Venting

The MiniMax NT® series pool and spa heaters are classified as "Category III" appliances and are induced-draft heaters which use positive pressure to push flue gases through the vent pipe to the outside. This requires a completely sealed vent system - single wall vent pipe with sealed-seams and joints. Flue gases under positive pressure may escape into the dwelling with any cracks or loose joints in the vent system, or improper installation. For this reason, installation should only be performed by a qualified pool professional. The vent pipe must be part of a sealed-seam construction, such as those listed for use with "Category III Appliances", and for operating temperature of 350 o/F (degrees Fahrenheit). The use of listed thimbles, roof jacks and/or side vent terminals are required; and the proper clearance to combustible materials must be maintained in accordance with type of vent pipe employed - in the absence of clearance recommendation by the vent pipe manufacturer, the requirements of the Uniform Mechanical Code should be met. It is recommended that vent runs over 18 feet be insulated to reduce condensation related problems and/or the use of a condensate trap in the vent run close to the heater may be necessary in certain installations such as cold climates. The MiniMax NT heater is suitable for through-the-wall venting, see table dimension below.

Indoor Vent Adopter Installation
	Through roof and side wall venting

CAUTION: THE HEATER SHOULD BE INSTALLED AT LEAST 5 FEET AWAY FROM THE POOL OR SPA. DO NOT COMBINE EXHAUST VENT PIPES TO A COMMON EXHAUST VENT IN MULTIPLE INSTALLATIONS, INSTEAD RUN SEPARATE VENT PIPES.

All products of combustion and vent gases must be completely removed to the outside atmosphere through a vent pipe which is connected to a which is connected to the stack adopter. A vent pipe extension of the same size must be connected to the vent adopter and extended at least 2 feet higher than the highest point of the roof within a 10 foot horizontal radius, and at least 3 feet. Higher than the point at which it passes through the roof, or as permitted by local code. The vent should terminate with an approved vent cap (weather cap) for protection against rain or blockage by snow. Insulated vent pipe and approved roof jack shall be employed through the roof penetration. The MiniMax heater should be placed in a suitable room with adequate ventilation and on a leveled floor, where leakage from heat exchanger or water connections will not result in damage to the area adjacent to the heater or the structure. When such locations cannot be avoided, it is recommended that a suitable drain pan with adequate drainage, be installed under the heater. The pan must not restrict air flow.

It is recommended to install the heater on fire-resistant slabs. Do not install the heater directly on a combustible wood floor without placing a noncombustible material between the floor and the heater. Heaters must never be installed directly on carpeting.

Installations in basements, garages or underground structures where flammable liquids may be stored must have the heater elevated 18 inches from the floor.

Indoor Venting

For outdoor installation with exhaust grill, the MiniMax heater must be placed in a suitable area on a level, noncombustible surface. Do not install the heater under an overhang with clearances less than 3 feet from the top of the heater. The area under an overhang must be open on three sides.

Vent Termination must be at least 3 feet above any forced air inlet located within a 10 feet radius

- Heater must be located at least 4 feet away from the building wall

- Heater must be located at least 4 feet below any adjacent window air inlet

- Heater must be located at least 4 feet horizontal distance from any window air inlet

Contact your pool professional and ask for site survey before you decide on venting options

Outdoor Vent Adopter Installation