Rheem Guardian Warm Water Owner's Manual And Installation Instructions
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Rheem Guardian Warm Water Owner's Manual And Installation Instructions

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Owner's Guide
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Installation Instructions

Rheem Guardian Warm Water
This warm water system must be installed and serviced by a qualified person.
Please leave this guide with a responsible officer.

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Summary of Contents for Rheem Guardian Warm Water

  • Page 1: Installation Instructions

    Owner’s Guide Installation Instructions Rheem Guardian Warm Water This warm water system must be installed and serviced by a qualified person. Please leave this guide with a responsible officer.
  • Page 2 This water heater may be protected by one or more patents or registered designs. TRADEMARKS ® Registered trademark of Rheem Australia Pty Ltd. Trademark of Rheem Australia Pty Ltd. NOTE: Every care has been taken to ensure accuracy in preparation of this publication.

  • Page 3: Table Of Contents

    CONTENTS RESPONSIBLE OFFICER - We recommend you read pages 4 - 10 The other pages are intended for the installer but may be of interest. Contents ........................... 3 About your warm water system ..................... 4 Operating parameters ......................6 Water supplies ......................... 6 Save a service call .........................

  • Page 4: About Your Warm Water System

    The Rheem warranty may not cover faults if relief valves or other safety devices are tampered with or if the installation is not in accordance with these instructions.
  • Page 5 ABOUT YOUR WARM WATER SYSTEM SAFETY WARNING The function of this warm water system is to deliver water consistently at a safe temperature. This requires that: 1. This product is used within the specification limits given in this Owners Guide. 2.

  • Page 6: Operating Parameters

    OPERATING PARAMETERS PRESSURES AND FLOW RATES For optimum performance, supply pressures should be nominally equal under flow conditions. Recommended Minimum Supply Pressure: 500 kPa Recommended Minimum Flow Rate at mid-blend with equal supply pressures (see table below) Nominal Flow Rate at mid-blend for a maximum pressure loss of 250 kPa (see table below) Maximum Supply Pressure: 1000 kPa Model 940 08001...

  • Page 7: Water Supplies

    In an acidic water supply, the water can attack stainless steel parts and cause them to fail. Where the pH is less than 6.0 the Rheem warranty does not apply to the stainless steel UV chamber in the ultra violet disinfection system.
  • Page 8 In a corrosive water supply, the water can attack copper parts and cause them to fail. Where the saturation index is less than –1.0, the water is very corrosive and the Rheem warranty does not apply to a Guardian Warm Water system.
  • Page 9 MINIMUM COLD WATER TEMPERATURE: 1°C Maximum Hot Water Temperature: 70°C* Minimum Hot Water Supply Temperature: Blend water temperature plus 15°C Maximum Cold Water Supply Temperature: Blend water temperature less 15°C Thermostatic Control Range: approximately 25°C - 60°C Optimum Thermostatic Control Range: 35°C - 50°C *Note! For optimum performance reasons it is recommended that the maximum hot water temperature is limited to 65°C.
  • Page 10 SUMMARY OF WATER CHEMISTRY ADVICE AFFECTING WARRANTY The Rheem warranty of this warm water system does not apply on the components listed below if the warm unit is connected at any time to a water supply with water chemistry of:...

  • Page 11: Save A Service Call

     Water heater size Do you have the correct size water heating plant for your requirements? The sizing guide in the Rheem sales literature and on the Rheem website (www.rheem.com.au) suggests average sizes that may be needed. Alternatively, the Free Rheem Technical Advisory Service can provide guidance.

  • Page 12: Installation

    INSTALLATION THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING INSTALLATION STANDARDS The warm water system must be installed:  by a qualified person, and  in accordance the installation instructions, and  in compliance with Standards AS/NZS 3500.4, AS/NZS 3000 and all local codes and regulatory authority requirements.
  • Page 13 (refer to installation diagram on page 17). Warm water maximum pressure 1000kPa Warm water maximum supply pressure 800kPa When installed with Rheem and Raypak commercial water heaters, further pressure limitations may apply: Water heater relief valve setting 1000kPa Expansion control valve setting* 850kPa Max.
  • Page 14 INSTALLATION WARM WATER UNIT DIMENSIONS...
  • Page 15 INSTALLATION LEGEND GUARDIAN WARM WATER - RHEEM COMMERCIAL WATER HEATERS TYPICAL INSTALLATION WARM WATER WITH RHEEM COMMERCIAL WATER HEATERS LEGEND GUARDIAN WARM WATER - WITH RAYPAK WATER HEATERS TYPICAL INSTALLATION WARM WATER WITH RAYPAK COMMERCIALWATER HEATERS...
  • Page 16 INSTALLATION TYPICAL INSTALLATION MANIFOLDED WARM WATER UNITS LEGEND TYPICAL INSTALLATION WARM WATER WITH LOLINE SOLAR PRE-HEAT RHEEM GUARDIAN WARM WATER UTILISING COMMERCIAL LOLNE SOLAR PRE-HEAT...
  • Page 17 INSTALLATION LEGEND TYPICAL INSTALLATION WARM WATER WITH HILINE SOLAR PRE-HEAT RHEEM GUARDIAN WARM WATER UTILISING COMMERCIAL HILNE SOLAR PRE-HEAT TYPICAL INSTALLATION WARM WATER WITH COMMPAK...
  • Page 18 INSTALLATION CONNECTION SIZES  Cold water connection: DN 40 copper  Hot water connection: DN 40 copper  Warm water flow connection: DN 50 copper  Warm water return connection: DN 25 copper  UV inlet and outlet connections: 2” BSP male COLD WATER CONNECTION DETAIL The main cold water supply is fed to the cold water inlet of both the water heating plant and the warm water unit.
  • Page 19 INSTALLATION UV CHAMBER Depending on the model, a total minimum dimension of 2,000mm or 2,600mm is required for the installation of the UV system to facilitate installation and removal of the UV lamp and quartz thimble. (Refer to UV Owners Guide and Installation Instructions).
  • Page 20 INSTALLATION TO FILL THE SYSTEM To initially fill the system, follow the procedure below:  Open all of the warm water taps in the building (don’t forget the showers).  Close the cold water isolation valve(s) at the inlet(s) to the thermostatic mixing valve(s) located inside the warm water unit.

  • Page 21: Commissioning

    Rheem provides a comprehensive commissioning service, which may have been included with the purchase of the warm water system. Call the nearest Rheem Service Department to arrange for commissioning if required. Note: if not included in the purchase price, a commissioning fee will be applicable.
  • Page 22 Turn on the warm water return circulator and set to the highest speed. Water in the warm line will begin to return to the mixing plant. Monitor the return temperature. Rheem Guardian is capable of maintaining system temperature with a differential between outlet and return of 2C. System design will dictate the actual differential achievable.
  • Page 23 COMMISSIONING COLD WATER FAILURE TEST Whilst the system is operating under high flow conditions, isolate the cold water to the thermostatic mixing valves. The system will automatically shut down. Record the maximum and stabilised temperature recorded at the test point and at the first outlet in the building. Reinstate the cold water supply to the mixing valves.
  • Page 24 COMMISSIONING COMMISSIONING LOG Rheem Guardian Warm Water Model Number:_________________________________ Serial Number: _________________________________ Date of Manufacture:____________________________ Item Result Comments Date Commissioned All lines flushed  With cold water  With hot water Line strainers cleaned Cold water: (5-25  Supply pressure ...
  • Page 25 MAINTENANCE CHECK LOG – RHEEM GUARDIAN WARM WATER MODEL NUMBER____________ SERIAL NUMBER___________...
  • Page 26 WATER QUALITY TEST RESULT LOG – RHEEM GUARDIAN WARM WATER Model Number______________ Serial Number____________ Date Sample Point ID Report No Result Report Signature Filed Sample 1 Sample 2...

  • Page 27: Maintenance

    Rheem Service provides a comprehensive maintenance program structured to meet the most stringent requirements to maintain the product at peak performance and monitor for the presence of Legionella. Contact your nearest Rheem Service Department or Accredited Service Agent to arrange a Service Contract inspection.
  • Page 28 As with all other thermostatic mixing valves, the critical sensing element in the Rheem Guardian mixing valve together with other critical components will exhibit wear over a period of time and usage. All of these parts are contained within the cartridge.
  • Page 29 MAINTENANCE Performance: check blend stability against known datum (e.g. commissioning check) for an induced pressure or flow change. Renew thermostatic cartridge when necessary. Function: isolate warm water return, and check thermostatic mixing valve inlet pipe work temperature for correct function of check valves, and maintain/renew as necessary. Check and clean strainers as appropriate. Lubricate accessible seals when necessary using silicone-only based lubricant.
  • Page 30 MAINTENANCE In Service Test 1. Measure and record supply temperature and cartridge due for pressure replacement? 2. If valve not in recent use exercise thermostat (refer to commissioning instructions) 3. Measure and record blend temperature & flow rate at maximum flow 4.
  • Page 31 This page is left intentionally blank...
  • Page 32 2.1 The decision of whether to repair or replace a faulty component is at Rheem’s sole discretion. 2.2 If you require a call out and we find that the fault is not covered by the Rheem warranty, you are responsible for our standard call out charge.

  • Page 33: Warranty

    3. WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WARM WATER UNIT DETAILED IN THIS DOCUMENT 3.1 Rheem will repair or replace a faulty component of your warm water system if it fails to operate in accordance with its specifications as...

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