Astralpool 175 User Manual

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Melbourne: 03 8796 8600 Gold Coast: 07 5552 2600 Perth: 08 9350 2600

Sydney Nth: 02 9853 2100 Sydney Sth: 02 8778 9500 Townsville: 07 4750 3100

Brisbane: 07 3308 5400 Adelaide: 08 8152 7600

sales@astralpool.com.au

www.astralpool.com.au

INSTALLATION AND

OPERATING INSTRUCTIONS

INSTALLATION AND OPERATING INSTRUCTIONS I INSTALLATION AND OPERATING INSTRUCTIONS

HiNRG Pool & Spa Heater

Models 200, 250 and 400

HiNRG Pool and Spa Heater

Models 175, 250 and 400

Table of Contents

Questions and Answers:

V
Vanessa ParkerAug 2, 2025
How to fix an Astralpool Swimming Pool Heater that will not light?
- R
  Regina HoweAug 2, 2025
  If your Astralpool Swimming Pool Heater won't light, first ensure the power to the heater is on. Then, check if the pump is running and start it if necessary. Also, inspect for any pump air locks and leaks. A dirty filter or clogged pump strainer basket can also prevent ignition, so clean them. Verify the thermostat is on and the set temperature is higher than the water temperature. If the display shows a fault condition due to the water being too hot, consult the fault indication table. Finally, confirm the gas is turned on.
R
Rebecca IngramAug 13, 2025
Why is my Astralpool 175 short cycling?
- M
  Mary SheppardAug 13, 2025
  If your Astralpool Swimming Pool Heater is short cycling, which means it's rapidly turning on and off, the most likely cause is insufficient water flow. To resolve this, clean the filter and the pump strainer to ensure adequate water flow through the system.
D
Donald GrahamAug 23, 2025
What to do if my Astralpool 175 Swimming Pool Heater is making knocking noises?
- D
  Darrell ConnerAug 23, 2025
  If your Astralpool Swimming Pool Heater is making knocking noises, it could be due to several reasons. First, check the pump condition, as low water flow can cause such noises. If the heater continues to operate after the pump has shut off, immediately shut off the gas supply and call for service. Another potential cause is a scaled heat exchanger, which also requires shutting off the gas supply and calling for service.

Astralpool 175 Specifications

General

Brand	Astralpool
Model	175
Category	Swimming Pool Heater
Language	English

Summary

INTRODUCTION

NOTICE TO INSTALLERS

Guidelines for authorized persons installing the heater.

SAFETY RULES

Critical safety precautions for pool/spa water temperature and user health.

OPERATING INSTRUCTIONS

TO TURN GAS OFF TO APPLIANCE

Procedure for safely shutting off the gas supply to the heater.

CHEMICAL BALANCE

CORROSION PREVENTION IN HEATERS

DIGITAL THERMOSTAT OPERATION

TEMPERATURE DISPLAY

Explanation of the thermostat's temperature display and normal operation.

POWER LOSS TO UNIT

How the heater behaves during power interruptions and restoration.

DISPLAY SYMBOL INDICATION

MAINTENANCE

WINTER OPERATION

Procedures for preparing the heater for winter or periods of non-use.

INSTALLATION

Levelling of the Heater

Guidance on correctly levelling the heater for outdoor installations.

FLOW RATES

Required minimum and maximum water flow rates for the heater.

WATER CONNECTIONS

Details on connecting the heater to the pool/spa plumbing system.

PLUMBING DIAGRAM

HEATER DIMENSIONS

INDOOR FLUE INSTALLATION

ROOFTOP TERMINATIONS

WALL TERMINATIONS

CLEARANCES

VENTILATION

ELECTRICAL CONNECTION

GAS CONNECTION

WATER PRESSURE SWITCH ADJUSTMENT

TO CHECK THE OPERATION OF THE SWITCH

Steps to verify the correct functioning of the water pressure switch.

TO ADJUST PRESSURE SWITCH

Detailed procedure for adjusting the pressure switch for proper operation.

FITMENT OF PRESSURE RELIEF VALVE

TESTING GAS PRESSURE

PERFORMANCE DETAILS

TO CHECK BURNER PERFORMANCE

Steps to inspect and verify the burner's operational performance.

TROUBLESHOOTING

HEATER WILL NOT LIGHT

Common causes and actions when the heater fails to ignite.

HEATER SHORT CYCLING (RAPID ON AND OFF OPERATION)

Diagnosing and resolving issues causing the heater to cycle on and off rapidly.

HEATER MAKING KNOCKING NOISES

Identifying causes and solutions for knocking sounds from the heater.

IGNITION MODULE LED FLASH CODE

Interpreting LED flash codes for startup and lockout conditions.

GAS PIPE SIZING TABLES

HINRG WIRING DIAGRAM

PCB

Information regarding the Printed Circuit Board (PCB) and its functions.

DIP SWITCH SETTINGS

How to set the DIP switches for different heater models.

MAINTENANCE OF YOUR POOL HEATER

WARRANTY

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