AquaMAX CG20 Series Owner's Manual And Installation Instructions

[Page 1] AquaMAX CG20 Series

This water heater must be installed and serviced by a qualified person. Please leave this guide with the householder. Owner’s Guide and Installation Instructions Continuous Flow Gas Water Heater CG20 series ...

[Page 2] AquaMAX CG20 Series

PATENTS This water heater may be protected by one or more patents or registered designs in the name of Rheem Australia Pty Ltd or Paloma Co., Ltd. Aquamax Australia Pty Limited is the supplier of the Aquamax range of continuous flow gas water he...

[Page 3] AquaMAX CG20 Series

3 CONTENTS HOUSEHOLDER - We recommend you read pages 4 to 25. The other pages are intended for the installer but may be of interest. About Your Water Heater ................................................................................

[Page 4] AquaMAX CG20 Series

4 ABOUT YOUR WATER HEATER WATER HEATER APPLICATION This water heater is designed for use in a single family domestic dwelling for the purpose of heating potable water. Its use in an application other than this may shorten its life. MODEL T...

[Page 5] AquaMAX CG20 Series

ABOUT YOUR WATER HEATER 5 MAINS PRESSURE The water heater is designed for direct connection to the mains water supply. If the mains supply pressure in your area exceeds that shown on page 28, a pressure limiting valve must be fitted. The ...

[Page 6] AquaMAX CG20 Series

ABOUT YOUR WATER HEATER 6 CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A CG20-60 model continuous flow water heater can be installed as part of a circulated hot water flow and return system in a building. Notes: the preset outlet temperature...

[Page 7] AquaMAX CG20 Series

ABOUT YOUR WATER HEATER 7 PRECAUTIONS Where damage to property can occur in the event of the water heater leaking, the water heater must be installed over a safe tray. Construction, installation and draining of a safe tray ...

[Page 8] AquaMAX CG20 Series

ABOUT YOUR WATER HEATER 8 TO TURN OFF THE WATER HEATER If it is necessary to turn off the water heater: Turn off the controllers(s) (if fitted) by pressing the on / off button. The light in the on / off button will go out and the priority ligh...

[Page 9] AquaMAX CG20 Series

ABOUT YOUR WATER HEATER 9 FROST PROTECTION The water heater has a frost protection system. The frost protection system will protect the water heater from damage, by preventing ice forming in the waterways of the water heater, in the event of free...

[Page 10] AquaMAX CG20 Series

ABOUT YOUR WATER HEATER 10 HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY? Installation requirements are shown on pages 26 to 36. The water heater must be installed: by a qualified person, and in accordance with the installation in...

[Page 11] AquaMAX CG20 Series

11 TEMPERATURE CONTROL CONTROLLERS The Aquamax CG20 series of continuous flow water heaters can be installed with Aquamax controllers to enable the user to control the temperature of the delivered water from the outlet of the water heater. ...

[Page 12] AquaMAX CG20 Series

TEMPERATURE CONTROL 12 CONTROLLER FUNCTIONS If one or more controllers are installed, at least one must be on for the water heater to operate. If all controllers are off, the water heater will only deliver cold water. on / of...

[Page 13] AquaMAX CG20 Series

TEMPERATURE CONTROL 13 CONTROLLER Note: water volume button, water volume operating light and water volume symbol are on the Kitchen controller only. SILENCING A CONTROLLER The controller emits a sound whenever a button is pressed. ...

[Page 14] AquaMAX CG20 Series

TEMPERATURE CONTROL 14 TEMPERATURE SETTINGS The temperature settings of each type of controller are: Bathroom1 & 2 37°C to 46°C (in 1°C increments), 48°C*, 50°C Kitchen 37°C to 46°C (in 1°C increments), 48°C*, 50°C, 55°C, ...

[Page 15] AquaMAX CG20 Series

TEMPERATURE CONTROL 15 TEMPERATURE ADJUSTMENT A controller must be on and have priority to be able to adjust the temperature setting. The temperature adjustment is made by pressing the up () button or down () button. The maximum temp...

[Page 16] AquaMAX CG20 Series

TEMPERATURE CONTROL 16 KITCHEN CONTROLLER The Kitchen controller allows the user to select the temperature setting for the hot water to be used in the kitchen and laundry. It has a minimum temperature setting of 37°C and a maximum temperature se...

[Page 17] AquaMAX CG20 Series

TEMPERATURE CONTROL 17 To operate the Kitchen controller: 1. Turn off the Bathroom controller(s)  If a temperature setting is displayed and the priority light is not glowing, it is necessary to turn off the Bathroom controller(s) to gain ...

[Page 18] AquaMAX CG20 Series

TEMPERATURE CONTROL 18 BATHROOM CONTROLLERS The Bathroom controller(s) allows the user to select the temperature setting for the hot water to be used in the bathroom. They have a minimum temperature setting of 37°C and a maximum temperature sett...

[Page 19] AquaMAX CG20 Series

TEMPERATURE CONTROL 19 ch e c k h o t water temperature b e f o r e u s e on of f 40 C pr ior ity in use 42 C pr iori ty in use 42 C pr ior i ty in use 42 C pr ...

[Page 20] AquaMAX CG20 Series

TEMPERATURE CONTROL 20 WATER VOLUME FUNCTION The water volume function is designed to warn, by a beeping sound, that a certain volume of water has been delivered from the water heater. It does not stop either the flow of or the heating of water. ...

[Page 21] AquaMAX CG20 Series

TEMPERATURE CONTROL 21 5. Turn off the alarm  Press the water volume button to turn off the alarm. The water volume operating light goes out and 0 x10l is displayed momentarily on the controller. The temperature setting of the controller ...

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22 WATER SUPPLIES This water heater must be installed in accordance with this advice to be covered by the Aquamax warranty. This water heater is manufactured to suit the water conditions of most public reticulated water supp...

[Page 23] AquaMAX CG20 Series

23 SAVE A SERVICE CALL Check the items below before making a service call. You will be charged for attending to any condition or fault, which is not related to manufacture or failure of a part (refer to “Terms of the Aquamax Warranty” on ...

[Page 24] AquaMAX CG20 Series

SAVE A SERVICE CALL 24 GAS BOOSTER OPERATING TOO FREQUENTLY If the water heater is installed as an in-series gas booster to a solar water heater, you may find that the water heater operates more frequently than expected. This will occur when the ...

[Page 25] AquaMAX CG20 Series

SAVE A SERVICE CALL 25 CLOUDS OF WHITE ‘VAPOUR’ FROM THE FLUE TERMINAL During the heating cycle, it is not unusual to see water vapour clouds steaming from the flue terminal, particularly on cold days. This is normal operation of t...

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26 INSTALLATION – WATER HEATER THIS WATER HEATER IS FOR OUTDOOR INSTALLATION ONLY. THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING. Check the water heater is suitable for the gas type available. (refer to the rating label on the water h...

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INSTALLATION – WATER HEATER 27 This water heater must be installed vertically upright with the water, gas and power connections on the underside, pointing toward the ground. The back of the water heater can be either against a wall o...

[Page 28] AquaMAX CG20 Series

INSTALLATION – WATER HEATER 28 RECESS INSTALLATION The water heater can be installed recessed into a wall. A recess box (PN AQ0350101) is available for such an installation. Refer to the installation instructions which accompany the recess box ...

[Page 29] AquaMAX CG20 Series

INSTALLATION – WATER HEATER 29 HOT WATER DELIVERY This water heater can deliver water at temperatures which can cause scalding. It is necessary and we recommend that a temperature limiting device be fitted between a CG20-60 model water heate...

[Page 30] AquaMAX CG20 Series

INSTALLATION – WATER HEATER 30 Gas Booster for a Solar Water Heater The temperature limiting device used with a CG20-60 model in-series gas booster as part of a solar water heater installation must have the additional capability of receiving a ...

[Page 31] AquaMAX CG20 Series

INSTALLATION – WATER HEATER 31 CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A CG20-60 model water heater can be installed as part of a circulated hot water flow and return system in a building. Notes: the preset outlet temperature setting ...

[Page 32] AquaMAX CG20 Series

INSTALLATION – WATER HEATER 32 LEGEND LEGEND Circulated Hot Water Flow and Return Continuous Flow Gas Water Heater LEGEND LEGEND Circulated Hot Water Flow and Return In-series Gas Booster as part of a Solar Water Heat...

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INSTALLATION – WATER HEATER 33 WATER TEMPERATURE DIAGRAMS CG20-60 series Kitchen and Bathroom Controllers CG20-50 series CG20-60 series Kitchen Controller Only CG20-50 series CG20-60 series Bathroom Controllers Onl...

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INSTALLATION – WATER HEATER 34 DIMENSIONS AND TECHNICAL DATA Model Gas Type Maximum Preset Outlet Temperature Setting CG20-NG-50 natural 48°C Rated delivery (@ 40°C rise) litres / min 12.5 CG...

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INSTALLATION – WATER HEATER 35 DIMENSIONS – CONTROLLERS Kitchen Controller Bathroom Controller ...

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INSTALLATION – WATER HEATER 36 TYPICAL INSTALLATION – OUTDOOR LOCATION TYPICAL INSTALLATION ELECTRONIC INSTANTANEOUS GAS WATER HEATER ...

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37 CONNECTIONS – PLUMBING All plumbing work must be carried out by a qualified person and in compliance with the Standard AS/NZS 3500.4 and all local codes and regulatory authority requirements. All gas work must be car...

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CONNECTIONS – PLUMBING 38 PIPE SIZES The pipe sizing for hot water supply systems should be carried out by persons competent to do so, choosing the most suitable pipe size to ensure adequate flow for each individual application. Re...

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39 CONNECTIONS – ELECTRICAL All electrical work and permanent wiring must be carried out by a qualified person and in accordance with the Wiring Rules AS/NZS 3000 and all local codes and regulatory authority requirements. Warning: Temp...

[Page 40] AquaMAX CG20 Series

40 INSTALLATION – CONTROLLERS CONTROLLERS The Aquamax CG20 series of continuous flow water heaters can be installed with Aquamax controllers to enable the user to control the temperature of the delivered water from the outlet of the water h...

[Page 41] AquaMAX CG20 Series

INSTALLATION – CONTROLLERS 41 KITCHEN CONTROLLER The Kitchen controller (PN AQ3264104) is to be installed in the kitchen or laundry only. It has a minimum temperature setting of 37°C and a maximum temperature setting of: CG20-60 series 60�...

[Page 42] AquaMAX CG20 Series

INSTALLATION – CONTROLLERS 42 Kitchen Controller Installation Concealed Cable If it is necessary to have an exposed wiring installation, follow this procedure omitting Steps 1 and 4, and make an opening in the thin section in the u...

[Page 43] AquaMAX CG20 Series

INSTALLATION – CONTROLLERS 43 BATHROOM1 AND BATHROOM2 CONTROLLERS If only one Bathroom controller is to be installed, the Bathroom1 Controller (PN AQ3264105) must be used. If two Bathroom controllers are to be installed, one must be a Bathroom1...

[Page 44] AquaMAX CG20 Series

INSTALLATION – CONTROLLERS 44 Wiring installation: 1. Penetrate the wall with a 30-35 mm hole at the controller location. 2. Install the supplied cable between the location of the controller and the water heater. 3. Remove the base plate fr...

[Page 45] AquaMAX CG20 Series

INSTALLATION – CONTROLLERS 45 CONNECTING THE CONTROLLER(S) TO THE WATER HEATER To connect the controller(s) to the water heater: 1. Ensure the electrical supply to the water heater is switched off. 2. Unscrew and gently remove t...

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46 COMMISSIONING All water heaters are tested and adjusted before dispatch from the factory, however further adjustments may become necessary because of local conditions. TO TURN ON THE WATER HEATER Open all of the hot taps in the house ...

[Page 47] AquaMAX CG20 Series

COMMISSIONING 47 Gas Inlet Test Point Pressure To check the gas inlet pressure: 1. Close any hot taps and ensure the burners are not operating. 2. Close the gas isolation valve at the gas inlet to the water heater. 3. Locate the gas inlet t...

[Page 48] AquaMAX CG20 Series

COMMISSIONING 48 BURNER GAS PRESSURE It is necessary to check the burner gas pressure at both the minimum and maximum operational settings. To check and if necessary adjust the operational gas pressures, the electrical supply to the water heater ...

[Page 49] AquaMAX CG20 Series

COMMISSIONING 49 11. Press and hold down the MIN button (“1L” is shown on the controller display), and observe the reading on the manometer. The red LED will glow and remain solid. 12. Release the MIN button. The red LED goes out....

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COMMISSIONING 50 Maximum test point gas pressure Refer to the rating label on the water heater for the maximum test point gas pressure. Follow Steps 10 to 16 of the “Minimum test point gas pressure” procedure on page 48, but open the hot ta...

[Page 51] AquaMAX CG20 Series

COMMISSIONING 51 PRESET OUTLET TEMPERATURE SETTING The factory preset outlet temperature setting of the water heater is: CG20-60 series 60°C CG20-50 series 48°C If a temperature controller is connected to the water heater, this will o...

[Page 52] AquaMAX CG20 Series

COMMISSIONING 52 TO CHECK OR ADJUST THE PRESET OUTLET TEMPERATURE SETTING The temperature setting will be displayed by a series of flashes from the red LED, with a three (3) second pause between each series of flashes. The preset outlet temperatu...

[Page 53] AquaMAX CG20 Series

COMMISSIONING 53 OUTLET TEMPERATURE COMPENSATION ADJUSTMENT – CG20-50 SERIES The maximum outlet temperature of a CG20-50 series water heater may be adjusted to compensate for temperature losses in the pipe work between the water h...

[Page 54] AquaMAX CG20 Series

COMMISSIONING 54 Note: The preset outlet temperature setting of this water heater must be set at 48°C prior to the commencement of this procedure. This procedure cannot be performed if the preset outlet temperature is set at 43�...

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COMMISSIONING 55 13. Repeat steps 2 to 5.  if the water temperature is still below:  48°C (if a temperature controller is to be connected), or  50°C (if no temperature controller is to be connected) and requires to be increased...

[Page 56] AquaMAX CG20 Series

56 DRAINING THE WATER HEATER To drain the water heater: Turn off the water heater Refer to “Turn Off The Water Heater” on page 55. Open a hot tap (preferably the shower outlet). Unscrew the two drain plugs, one each at the cold wa...

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59 AQUAMAX CONTINUOUS FLOW GAS WATER HEATER WARRANTY – AUSTRALIA ONLY CONTINUOUS FLOW GAS WATER HEATER CG20 SERIES 1. THE AQUAMAX WARRANTY – GENERAL 1.1 This warranty is given by Aquamax Australia Pty Limited ABN 37 138 189 689 of 4...

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AQUAMAX CONTINUOUS FLOW GAS WATER HEATER WARRANTY – AUSTRALIA ONLY Revision Date: 2013 January 122477A 60 CONTINUOUS FLOW GAS WATER HEATER CG20 SERIES 3. WHAT IS COVERED BY THE AQUAMAX WARRANTY FOR THE WATER HEATERS DETAILED IN THIS ...