Jandy LJ250 User Manual

TABLE OF CONTENTS
SECTION 1. General Information
1.1 Introduction ........................................... 1
1.2 Consumer Information and Safety ........ 1
1.2.1 Spa/Hot Tub Safety Rules .................... 1
1.2.2 Swimming Pool Energy Safety Tips ..... 2
1.3 Warranty............................................... 2
1.4 Codes and Standards .......................... 2
1.5 Technical Assistance ........................... 2
1.6 Materials Installer Must Provide ............ 3
1.6.1 Materials for All Applications ................. 3
1.6.2 Materials for Special Applications ......... 3
1.7 Specifications ....................................... 3
1.7.1 General Specifications ......................... 3
1.7.2 Dimensions .......................................... 4
SECTION 2. Installation Instructions
2.1 Introduction ........................................... 4
2.2 Field Assembly ..................................... 4
2.3 Location Requirements ........................ 5
2.3.1 Introduction ........................................... 5
2.3.2 Clearances ........................................... 6
2.3.3 Flooring................................................. 6
2.3.4 Outdoor Installation ............................... 7
2.3.5 Indoor and Outdoor Shelter
Installation............................................. 8
SECTION 3. Venting
3.1 Combustion Air Supply ......................... 8
3.2 Vent Pipe Sizing and General
Installation............................................. 9
3.2.1 Outdoor Installations............................. 9
3.2.2 Indoor and Outdoor Shelter
Installations........................................... 9
SECTION 4. Gas Connections
4.1 Gas Supply and Piping ......................... 10
4.2 Manifold Pressure................................. 12
4.3 Special Precautions for
Propane Gas ........................................ 12
SECTION 5. Water Connections
5.1 Water Piping......................................... 12
5.2 Check Valve Installation ........................ 13
5.3 Automatic Flow Control Valve............... 13
5.4 Reversible Water Connections ............ 13
5.5 Connections at Heater.......................... 16
5.6 Pressure Relief Valve ........................... 16
5.7 Auxiliary Components, Chlorinators,
Ozone Generators, and
Sanitizing Chemicals............................ 16
SECTION 6. Electrical
6.1 General Information .............................. 17
6.2 Main Power........................................... 17
Wiring Diagram .................................... 18
6.3 Bonding ................................................ 19
6.4 Pump Power Connection ..................... 20
SECTION 7. Operating Instructions
7.1 Start-Up .............................................. 20
7.2 Setting the LJ Controller
Functions and Limits .......................... 21
7.2.1 Setting the Real Time Clock ............... 22
7.2.2 Setting the Temperature Scale........... 22
7.2.3 Setting Pool and Spa Temperatures .. 22
7.2.4 Setting the Freeze Temperature ........ 23
7.2.5 Setting the Internal Pump Time Clock. 24
7.3 Lighting and Shutdown Procedures.... 24
7.4 Heater/Controller Operation ................ 24
7.4.1 Normal Operation ............................... 26
7.4.2 Pump Operation ................................. 26
7.4.2.1 Pump Operation in "External Time
Clock" Mode ....................................... 26
7.4.2.2 Pump Operation in "Internal Time
Clock" Mode ....................................... 27
7.4.3 Locking/Unlocking the Keypad ............ 27
7.5 Remote Control Operation ................. 27
7.5.1 Remote Control Connected At Fireman
Switch Terminal Block........................ 27
7.5.2 Remote Control Connected At The
Heater's Control Panel ....................... 28
7.6 Water Pressure Switch Adjustment ... 28
7.7 Temperature Rise .............................. 29
7.8 Adjusting the Manual Bypass Valve .... 30

Jandy LJ250 Specifications

General

Brand	Jandy
Model	LJ250
Category	Swimming Pool Heater
Language	English