AO Smith ZIP Digital Tankless Water Heaters User Manual

AO Smith ZIP Digital Tankless Water Heaters

What’s in the box?

1. Tankless Electric Water Heater
2. User Manual
3. Wall Mounting Accessories

General Information

On Receipt
It is our policy to promote safe delivery of all orders. This product shipment has been thoroughly checked, packed and quality certified before leaving our factory.

Visible Loss or Damage
If any of the goods called for on the bill of lading or express receipt are damaged or the quantity is short, do not accept them until the freight or express delivery agent makes an appropriate notation on your freight bill or receipt.

Concealed Loss or Damage
When a shipment has been delivered to you in apparent good condition, but upon opening the packaging if any loss or damage has taken place while in transit, inform the carrier’s agent / A. O. Smith representative immediately.

About this manual
This manual is a guide to good practice for operating and periodic maintenance of the A. O. Smith ZIP Water Heater. Do not operate the Water Heater before reading the user manual.
Please follow instructions in this manual to ensure personal safety and proper operation of this product. Always install, operate, inspect and maintain this product in accordance with all applicable standards. Please store this user manual carefully for any future reference.

Disposal of this Product
(Waste Electrical and Electronic Equipment)

This marking on the product, accessories or User Manual indicates that the product and its electronic accessories should not be disposed of with other household waste at the end of their working life. To prevent possible harm to the environment or human health from uncontrolled waste disposal, please separate these items from other types of waste and recycle them responsibly to promote the sustainable re-use of material resources.

Household users should contact their local government office, for details of where and how they can take these items for environmentally safe recycling. This product and its electronic accessories should not be mixed with other commercial wastes for disposal.

Safety Instructions

Your safety and the safety of your loved ones is paramount. There are several safety related messages in this manual, which have been provided during various steps such as the installation, operation and maintenance of your ZIP Water Heater. These messages point out potential hazards and also educate on how to reduce any potential risks. Please always read and follow all safety messages as provided in this user manual.

This is the safety alert symbol. This symbol alerts you to potential hazards that can hurt you and others. All safety messages will follow the safety alert symbol and either the word “DANGER” or “WARNING”.

DANGER
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING
Indicates a potentially hazardous situation, which if not avoided, could result in death or serious injury.

CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury or property damage.

WARNING
Do not use this Water Heater if any part has been under water. Immediately contact an Authorised Service Technician to inspect the Water Heater and contact A. O. Smith Service personnel to replace any part of the control system which has been under water. Failure to follow this instruction can result in property damage, serious injury or death.

IMPORTANT
These instructions have been written as a guide for the proper installation and operation of your Water Heater. A. O. Smith will not accept any liability where these instructions have not been followed. However, for your safety and to avoid damage caused by improper installation, it is recommended that Water Heater must be installed by an Authorised Service Technician.

Before proceeding with the installation instructions:

1. Inspect the Water Heater and its component parts for possible damage. Do Not install or attempt to repair any damaged component parts. If you detect any damage in the Water Heater, please contact the dealer where the Water Heater was purchased or call A. O. Smith Customer Care Centre.
2. Verify that the voltage being supplied corresponds to that which is marked on the Water Heater manual.

Specifications

Model|  | ZIP|
Power [W]| 5500
Voltage/Frequency [V/Hz]| 230~/50
Rated Current [Amps]| 24
Required circuit breaker [Amps]| 32
Min. water flow to activate unit [ltr/min.]| 1.2
Working water pressure| N/cm2| 2 – 60
Water head (metres)| 2 – 61.2
Inlet/Outlet connections [inch]| ½ BSP
Net Weight (kgs.)| 2.1

Dimensions
Figure 1
Figure 2

Safety Precautions

During Installation

Do not install the Water Heater where there is direct sunlight or rain. It is has to be installed indoors only.
Figure 3

Do not install the Water Heater where water splashes on the Water Heater.
Figure 4

Installation

Before installing, ensure the tools Adjustable wrench, Teflon tape, Measuring tape, Hammer, Bubble level indicator and Impact drill tool are available.
Mounting the Water Heater

• It is recommended as per IS 302-1 to have 6 inches clearance from wall.

• Select a place to mount Water Heater in a vertical position nearby water fittings.
  Figure 5
  

• Water Heater must be located within 2 ft. (approx.) from a 230 V power supply with proper grounding.

• Make sure that the wall can withstand at least twice the weight of the Water Heater when completely filled with water.
  Figure 6
  

Installation (contd…)

• Remove the Mounting bracket from the back side of the product.

• Mark the holes using Mounting bracket (Step 1).

•  Drill 4 holes of diameter 6 mm (Step 2).
  Figure 7
  

• Insert the Expansion Anchor into the hole (Step 1).
  Insert the Mounting screw over the Expansion Anchor through the Mounting bracket and tighten the Mounting screw by rotating it till it gets fixed steadily (Step 2).
  Figure 8
  
  Mount the Water Heater on the Mounting bracket. Tug downwards on the Water Heater to ensure that the Water Heater is fixed steadily on the Mounting bracket.
  Figure 9
  

Plumbing instructions

Figure 10 Installation Diagram

Flexible Hoses to be procured by the customer, not part of standard product.

1. Wrap the Teflon tape around the inlet and outlet connections of the Water Heater to prevent leakage.
2. Make necessary plumbing with reference to the Installation Diagram. (Refer “Installation Diagram”)
3.  Install rubber seal rings at the inlet and outlet connections.
4. Connect the cold water pipe to the inlet.
5. Connect the hot water pipe to the outlet.

CAUTION

• Make sure a suitable Teflon tape is used for all plumbing connections to prevent leakage.
• Use only Nylon/ Stainless Steel (SS) braided hoses (Flexible Hoses) having a minimum pressure rating of 6 Bar and hoses should be compatible for hot water applications.
•  Failure to follow this instruction can result in property damage.

Operation

**Figure 11

**

1. Open a nearby hot water faucet to permit air to escape.
2. Open the cold water inlet valve completely and allow water to flow to the unit.
3. Close hot water faucet when water flows.
4. When all water connections are completed, check for leaks and take corrective action before operating.
   Note: The minimum water flow to switch ON the unit is 1.2 L/min.

CAUTION

• This Water Heater should not be operated with insufficient amount of water. Failure to do so may result in damage to the Water Heater and injuries to the user. This will also make the warranty null and void.
• Once the Mounting and Plumbing is completed, then only the power supply should be switched ON.
• Do not splash water directly or clean with benzene, pesticides, thinner, alcohol, etc., but use a soft, dry cloth to clean the Water Heater.

Connecting to Electrical Supply
Figure 12

• Customer should procure a circuit breaker of 32 Amps ratings with IS certification for 5.5 kW unit.
• Ensure that wires are connected to circuit breaker and reliable earthing has been done.
• Ensure that the unit should be connected to a single circuit (single phase supply).
• Ensure a separate electric supply cable of 2.5 sq. mm from main electrical supply with IS certification and protected by a double pole breaker is used.

CAUTION

• Connect the Water Heater using circuit breaker, do not use any adapters. Use multimeter to check whether the live line and neutral line are not reverse, to ensure complete safety.
• Before installing the Water Heater, confirm that the power of Water Heater matches electric meter capacity and electric supply cable of 2.5 sq. mm is used.
• The Water Heater should be earthed reliably. It is prohibited to connect the earth wire to neutral wire or faucet water pipe.
• If the power supply cord is damaged, it must be replaced by the manufacturer or Authorised Service Technician in order to avoid a hazard.
• In order to avoid a hazard due to inadvertent re-setting of the Thermal cut-out, this Water Heater must not be supplied through an external switching device, such as a timer, or connected to a circuit that is regularly switched ON and OFF by the utility.

Figure 13

1. Switch ON the Water Heater’s power supply and Power touch button in the water heater. The LED display glows as shown.
2. Turn ON/OFF the cold water inlet supply for the heater to start/stop heating.
3. Press the “+” or “-” touch button until the required temperature is displayed on the LED display. Wait for few seconds without pressing any buttons, the value flashing in the display will be changed as set temperature and stored in memory. It will return to its normal mode and the heating of the water is based on the new set temperature. Temperature setting range is between 30°C to 55°C.
4. Check hot water with hand before you taking a shower.

Sleep mode: Sleep mode is activated when the Water Heater is in standby mode and no button is touched on Touch panel or user intervention for 15 seconds. Touch any of the buttons on the Touch panel to enable normal mode.

• If the heater has been paused, you may initially get a short burst of very hot water while you turn on again. Please run the water through for a few seconds to let the temperature settle down. Please check hot water with hand before you taking a shower.

Turning LED display upright: When the Water heater is installed Downward position (Refer page 7), the LED display will be upright. To turn the LED display to correct orientation, make sure the heater is in OFF mode, now touch and hold “+” and “-” touch buttons at the same time for 5 seconds the Touch panel will be turned to correct orientation.

Auto mode: In this mode, there is an automatic memory function to avoid repetitive operation, while you turn on the heater, the default set temperature will be the same as last time set.

Overheating function: When the outlet temperature reaches over 65°C, the heater will enter into pause mode. The heater will resume to work again automatically when hot water temperature drops to 50°C.

Dry heating protection: When the outlet temperature reaches over 75°C, the power supply will be cut-off. The heater will switch ON when the thermal- cutout is reset. Call Customer Care Centre to reset.

Flow base operation: This is a safety feature and the Water heater will switch ON only when the inlet water flow is ≥1.2 ltr/min.

Pressure relief valve function: This valve protects the heater by relieving pressure and discharge water in case the pressure overshoots the pre-set limits.

Electricity Leakage protection: There is real-time electricity leakage detection function, while there is a electricity leakage, the heater will stop working automatically and E2 error will appear on LED display.

DANGER
Hot water is dangerous, especially for the young children, aged or the disabled. The Water Heater allows you to control the temperature of your hot water. Water temperatures over 52°C can cause severe burns instantly or death from scalds. Do not leave a child or an infirm person in the bath unsupervised.

Troubleshooting

The information in the following troubleshooting chart may help you diagnose and/or fix a problem you may be experiencing. Please review this chart before calling for Customer Care Centre.

Check and connect power supply to the heater.
PCB problem.| Call Customer Care Centre.
Thermal cut-out tripped.| Call Customer Care Centre.
Step down transformer problem.| Call Customer Care Centre.
LED display glows and no hot water.| Check water supply.| Turn ON water supply.
Check for blockage at the inlet.| Remove blockage at the inlet.
Heating element or Triac problem.| Call Customer Care Centre.
Touch buttons not working.| Water droplets on LED display.| Wipe water droplets on LED display.
Water pressure too low.| Open inlet valve completely to get water.
Touch buttons or PCB damage.| Call Customer Care Centre.
Water too hot.| Set temperature is high.| Set to lower temperature.
Inlet water flow is low.| Increase inlet water flow.
Water too cold.| Set temperature is low.| Set to higher temperature.
Inlet water flow is high.| Reduce water flow.
Outlet water flow gets reduced over time.| Inlet strainer or shower clogged.| Remove blockage at the inlet or clean the shower.
Heating chamber clogged.| Call Customer Care Centre.
Foul smell from hot water.| Presence of organic matter in input water.| Provide treated water at the input.
High electrical conductivity of water due to dissolved solids in input water.| Call Customer Care Centre.

Error Messages and Actions

Note: Call Customer Care No. 1800-103-2468/1860-500-2468.

Circuit Diagram

Figure 14

CAUTION
In order to avoid a hazard due to inadvertent re-setting of the Thermal cut-out, this Water Heater must not be supplied through an external switching device, such as a timer, or connected to a circuit that is regularly switched ON and OFF by the utility.

Product colour and image shown may vary from the actual product.
Part No. : 335271-109_A
Date: 13-07-2021

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