Pentair MiniMax Plus User Manual

1
Rev. C 12-1-00 P/N 38033
FOR YOUR SAFETY - READ BEFORE OPERATING
Warning:
If you do not follow these instructions exactly, a fire or explosion may
result, causing property damage, personal injury or loss of life.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or other appliances.
For Your
Safety
Improper installation, adjustment, alteration, service or maintenance can cause property
damage, personal injury or death. Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
MiniMax Plus
POOL & SPA HEATERS
SERVICE MANUAL
WARNING
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone.
Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
WARNING
Pentair Pool Products
1620 Hawkins Ave., Sanford, NC 27330 • (919) 774-4151
10951 West Los Angeles Ave., Moorpark, CA 93021 • (805) 523-2400

Pentair MiniMax Plus Specifications

General

Category	Swimming Pool Heater
Brand	Pentair
Model	MiniMax Plus
Type	Gas Pool Heater
Fuel Type	Natural Gas or Propane
Efficiency	82% Thermal Efficiency
Dimensions	Varies by model. Refer to specific model specifications
Weight	Varies by model. Refer to specific model specifications

Summary

Safety and Warnings

Critical Safety Instructions

Essential safety information before operating the heater, including fire and explosion risks.

Gas Leak Safety Procedures

Step-by-step guide on actions to take if a gas leak is detected.

Installation Compliance and Guidelines

Codes, Standards, and Safety Rules

Conforming to national/local codes and essential safety rules for user operation.

Heater Dimensions

Installation Dimension Variations

Detailed dimensions for outdoor and indoor installations of various heater models.

Water Connections

Flow Rate, Bypass, and Valve Placement

Guidelines for plumbing connections, flow rates, bypass, and valve installation.

Gas and Electrical Requirements

Gas Line Installation and Pressure Testing

Procedures for gas line sizing, installation, and pressure testing.

Electrical Wiring and Transformer Setup

Instructions for wiring the transformer and electrical components.

Starting Operation

Ignition and Lighting Procedures

Step-by-step guides for starting Natural/Propane and Millivolt ignition systems.

Water Chemistry Management

pH and Alkalinity Control

Importance of balanced pH and alkalinity for heater performance and longevity.

Maintenance Procedures

Routine Maintenance and Seasonal Operation

Recommendations for regular checks, spring/autumn, and winter operation.

Desooting and Cleaning

Causes and Removal of Soot

Identifying common causes of sooting and methods for cleaning the heat exchanger.

Troubleshooting

Diagnostic Light Interpretation

Understanding the meaning of diagnostic lights for fault finding.

Pilot, Burner, and Cycling Issues

Diagnosing and resolving problems with pilot flames, burner ignition, and rapid cycling.

Pressure Switch and Thermostat Issues

Troubleshooting common issues related to pressure switches and thermostats.

Tests and Adjustments

Gas Pressure, Switch, and Vent Tests

Procedures for testing gas pressure, pressure switch, and venting.

Limited Warranty Information

Warranty Coverage Details

Explanation of parts covered, duration, and warranty terms.