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Swimming Pool Heater
Pentair
250, 300
installation manual
Rev. C
Models:
300
250
1
38
40
40
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40 pages
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Troubleshooting
Specifications
Install
Wire Remote
Warranty
Maintenance
Time Setting
Safety
Service CHECKS-IGNITION Module
Page 38
Image 38
38
NOTES
P/N 471593
Rev. C
11-1-01
Page 37
Page 39
Page 38
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Page 39
Contents
MiniMax NT Low NOx Series
For additional free copies of this manual call 800
Table of Contents
MiniMax NT Low NOx
Code Requirements
Operation
Warranty Information
Safety Rules
For Your Safety Read Before Lighting
Operation Lighting
Installation Instructions
Specifications
Installation Electrical
ELECTRICAL, ALL HSI Units
Installation Remotes
TWO-WIRE or THREE-WIRE Remote HOOK-UP
Wire Remote
Three-wire remote
Installation Single Voltage
Wiring
Installation Single
Voltage
Code or Superceding Local Wiring Codes
MiniMax NTLow
Plumbing Connections
Water Connections
Plumbing
GAS Connections
Installation Indoor
Indoor VENTING-General Requirements
See page 17 for Indoor Vent Adaptors
Indoor Vent Adaptors Fits ALL Models
Installation
Indoor
Installation Outdoor
Ventilation
Basic Operation
General Description
Basic System Operation
Water Pressure Switch
Safety Controls
AIR Pressure FAN Switch
Typical Water Pressure Switch
Operation of Ignition Module
Basic Thermostat Operation
Pentair Temperature Controller 7800 Layout
General
Normal Operation no Remote
Temperature & Time Setting Programming
To Change the Factory Temperature Settings
Time Setting
Time SETTING, cont’d
Time Setting Programming
Energy Saving Tips
Maintenance Instructions
Maintenance
Spring and Fall Operation
Pool and SPA Water
Maintenance Water Treatment
Chemical Balance
If pH becomes too high over alkaline, it has these effects
Troubleshooting-Normal Operation Sequence of Heater
Normal Operation Sequence
Troubleshooting-Normal Operation of Heater
Power Service Current Temp SET TEMP/TIME
Troubleshooting & Service
Flame Sensor Current Check
Service CHECKS-IGNITION Module
Service Checks
Troubleshooting General
Heater Short Cycling Rapid On and Off Operation
Minimax NT LOW NOx Heater Single Voltage
Description QTY
Minimax NT LOW NOx Heater Dual Voltage
MiniMax NT Low NOx Dual Voltage Replacement parts
Rev. C
Rev. C
Rev. C
MiniMax NT Low NOx Heaters Limited Warranty
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