Section III. Installation

8

 

 

 

 

TO

PUMP

 

 

POOL

POOL

 

FILTER

MANUAL

 

HEATER

 

 

BY-PASS

 

 

 

 

 

 

CHECK

GATE

 

 

VALVE

 

 

VALVE

 

 

Figure 2.

 

 

CHECK

 

 

FROM

 

 

 

VALVE

 

 

 

POOL

PLUMBING CONNECTIONS

The MiniMax NT heater has the unique capability of direct schedule 40 PVC plumbing connections. A set of bulkhead fittings is included with the MiniMax NT to insure conformity with Pentair’s recommended PVC plumbing procedure. Other plumbing connections can be used. See Figure 2 for plumbing connections.

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 manual by-pass is installed, temporarily close it to insure that all air is purged from the heater.

VALVES

When any equipment is located below the surface of the pool or spa, valves should be placed in the circulation piping system to isolate the equipment from the pool or spa. Check valves are recommended to prevent back siphoning.

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

Where the flow rate exceeds the maximum 120 GPM,

a manual bypass should be installed and adjusted. After adjustments are made, the valve handle should be removed to avoid tampering. See Figure 2.

Model

Min. (GPM)

Max. (GPM) *

 

 

 

 

 

200

20

120

 

 

 

 

 

250

30

120

 

 

 

 

 

300

30

120

 

 

 

 

 

400

40

120

 

 

 

 

 

* Do not exceed the maximum recommended

 

flow rate for the connecting piping.

 

 

 

 

 

 

 

Table 1.

See page 30 for

Pressure Relief Valve Installations.

BELOW POOL INSTALLATION

If the heater is below water level, the pressure switch must be adjusted. This adjustment must be done by a qualified service technician.

See following CAUTION before installation.

CAUTION

BELOW OR ABOVE POOL INSTALLATION

The water pressure switch is set in the factory at 1½ PSI. This setting is for a heater installed at pool level or within 3’ above or 3’ below. If the heater is to be installed more that 3’ above or 3’ below, the water pressure switch must be adjusted by a qualified service technician. See page 22, Figure 22.

FLOW SWITCH

If the heater is installed more the 6’ above the pool or more than 10’ 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.

P/N 472235

Rev. E 4-15-05

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Pentair NT Series Plumbing Connections, Valves, Manual BY-PASS, Below Pool Installation, Below or Above Pool Installation
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NT Series specifications

Pentair is a renowned name in the realm of water filtration and fluid management solutions, and the NT Series stands out as a key player in their extensive product lineup. Engineered for optimal performance and reliability, the NT Series showcases innovative features and technologies that cater to various water treatment needs.

One of the defining characteristics of the Pentair NT Series is its exceptional filtration capabilities. These filters are designed to effectively remove sediments, chlorine taste and odor, and other contaminants, ensuring clean and safe drinking water. With a multi-stage filtration process, the NT Series utilizes advanced materials and technologies that enhance filtration efficiency and longevity.

The NT Series is equipped with advanced filter media that can capture particles as small as 0.5 microns. This level of filtration is essential for households and commercial applications, where water quality is paramount. The filters are also designed for easy replacement, ensuring minimal downtime and ease of maintenance for users.

Another prominent feature of the NT Series is its compact design, making it suitable for various installation spaces. The filters are engineered to maximize flow rate while maintaining high filtration efficiency, ensuring that users do not experience reduced water pressure. This balance of performance and design is integral, especially in demanding applications.

Moreover, the NT Series incorporates innovative technology to monitor filter life and performance. Several models come with built-in sensors that provide real-time data on filter conditions, allowing users to know when it's time for a replacement. This proactive approach to maintenance enhances user experience and ensures continued access to high-quality water.

The materials used in the NT Series are also noteworthy. Constructed from durable, corrosion-resistant components, these filters are designed to withstand harsh operating conditions while maintaining peak performance over time. This enhances the overall lifespan of the product, providing users with a reliable and long-lasting solution for their water filtration needs.

In summary, the Pentair NT Series represents a blend of advanced filtration technology, user-friendly design, and durable construction. With its ability to remove various contaminants, easy maintenance features, and compact design, the NT Series caters to residential and commercial users alike. Investing in the NT Series ensures access to clean, great-tasting water while enjoying the benefits of reliable and efficient filtration technology.
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