Quantum 270-11AC3-134 User Manual

Quantum 270-11AC3-134

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Owner’s Manual Quantum Energy Technologies

OWNER'S MANUAL

Document number: QDC0030PD-11 Page 1 of 40

Including Installation Instructions And Warranty Information

TO SUIT HEAT PUMP STORAGE WATER HEATER

MODELS

Compact:

150-08ACW-134

270-11AC3-134

340-11AC3-134

340-17ACW-134

Titan Split:

340TIH-134

FOR ADVICE, REPAIRS AND SERVICE

1800 644 705

Document Number: QDC0030PD-11

Date Of Revision: 01 Mar. 2008

Table of Contents

Questions and Answers:

S
scottowensAug 6, 2025
Why is my Quantum 270-11AC3-134 Water Heater producing a shortage of hot water?
- A
  Anthony PierceAug 7, 2025
  If you're experiencing a shortage of hot water with your Quantum Water Heater, it could be due to a few reasons. The system might be undersized for your needs, requiring a re-size. An unexpected load or weather condition could also be the culprit; consider re-sizing if extra hot water draw is now part of the design, repair any leakage, or re-size with heat loss included in the design, or install a booster. Finally, the system may not be producing enough heat, so refer to Table A.3: items 2, 3 & 4.
C
christina69Aug 14, 2025
Why Quantum Water Heater has no hot water but the compressor is running?
- J
  Juan ThomasAug 14, 2025
  If your Quantum Water Heater's compressor is running but there's no hot water, several factors could be responsible. It's possible the tank water was recently drawn off, and the unit has only recently started; if the water isn't heated in the expected time, investigate other potential causes. Low or no refrigerant could also be the issue; refer to Table A.2: Item 1. The compressor might not be pumping, in which case you should replace the compressor if it's faulty or adjust/replace the TX valve. Lastly, a frozen evaporator could be the cause; repair or replace the de-ice system or avoid running the unit in constant cold weather.
P
prestonjenniferAug 22, 2025
What to do if the thermal cut out trips off repeatedly on Quantum Water Heater?
- E
  Evan JacksonAug 22, 2025
  If your Quantum Water Heater's thermal cut-out trips repeatedly, it could be due to several reasons. A low refrigerant charge might be the cause, requiring you to top up the refrigerant or recharge the system. Repair any leaks, or if it's beyond repair, contact QUANTUM service. Conversely, a high refrigerant charge can also cause this issue, so the refrigerant charge should be corrected. Incorrect voltage and frequency can also lead to this problem, so rectify the improper power supply or shut off the system and report it to the client. If the compressor runs hot due to internal leakage, the compressor and filter should be replaced if faulty. Lastly, poor oil return to the compressor can cause this issue, so rectify any installation defects.

Quantum 270-11AC3-134 Specifications

General

Brand	Quantum
Model	270-11AC3-134
Category	Water Heater
Language	English

Summary

Section 3: Installation Details

3a: General Installation Requirements

Outlines mandatory standards and requirements for installing the water heater.

3a.1: Location

Guidance on optimal placement for performance and service access, including noise considerations.

3d: Pressure & Temperature Relief Valve (PTR)

Details the fitting, accessibility, and draining requirements for the PTR valve.

3g: Pressure Reducing Valve

Explains the need for a pressure-limiting device for mains pressure exceeding 500 kPa.

3m: Electrical Connection

Covers power supply requirements, circuit breaker, and connection types for safe operation.

3m.1: Safety Notes

Highlights essential safety precautions regarding electrical connections and water filling.

3n: Refrigeration Connections (Split Models Only)

Emphasizes that refrigeration pipe work must be done by a licensed tradesperson.

3o: Caution Regarding Drilling Metal Jacket

A critical warning against drilling the metal jacket to prevent damage to refrigeration lines.

Section 4: Operating Instructions

Section 5: Safety Information

5a: Safety Devices

Lists critical safety devices like the digital controller, thermostat, and relief valve.

5b: Important Note Regarding PTR Valve

Explains the function and checks for the Pressure & Temperature Relief Valve.

Section 6: Maintenance & Service Information

6c: Sacrificial Anode

Explains the anode's purpose for corrosion protection and inspection/replacement intervals.

6d: Service Caution – Before Any Work Is Carried Out

Crucial safety warning to turn off power before performing any maintenance or inspection.

6e: Thermal Overload (Incorporated in Digital Controller)

6f: Routine Service

6f.1: Six Month Service (By Owner)

6f.2: Five Year Service (By Authorized Personnel Only)

6f.3: Access & Removal Of Sacrificial Anode

6f.5: Refrigeration & Thermostat Servicing

Section 7: Recognition of Abnormal Operation

7a: Pressure & Temperature Relief Valve Running

7b: No Hot Water

Provides a troubleshooting guide for diagnosing and resolving the 'No Hot Water' issue.

7c: High Electricity Bills

Section 8: Warranty Certificate

8a: Terms Of Warranty

8b: Items Not Covered By Warranty

8c: Before Phoning For Service

Section 10: Operation & Adjustment of the Digital Controller

10a: The Buttons

10a.1: SET BUTTON

10a.2: UP BUTTON

10a.3: DOWN BUTTON

10c: Error Codes

Lists various error codes displayed by the digital controller and their meanings.

10d: De-Icing

10e: Operating Principle

10f: Adjusting

Appendix A: Trouble Shooting Guide

A.1: No Hot Water; Compressor Not Running

Provides probable causes, tests, and actions for diagnosing no hot water with a non-running compressor.

A.2: Thermal Cut Out Trips Off Repeatedly

Lists causes for repeated thermal cut-out trips and troubleshooting steps.

A.3: No Hot Water; Compressor Running

Troubleshooting for no hot water when the compressor is running.

A.4: Shortage Of Hot Water

A.5: Testing Undercharge Or Overcharge Of Refrigerant

Explains parameters needed to check refrigerant levels in the system.

A.6: Water Temperature, Condensing Pressure & Amperage

Provides technical data relating water temperature to pressure and current draw.

A.7: Suction Pressure

A.8: Signs Of Correct Charge

A.9: Signs Of Undercharge

A.10: Signs Of Overcharge

A.11: Technical Data For Service Personnel

Provides detailed technical specifications for SIAM compressors used in the units.