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Summary of Contents for Heatworks MODEL 3
- Page 1 MODEL 3 TANKLESS ELECTRIC WATER HEATER User Manual & Installation Guide...
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Page 3: Table Of Contents
INTRODUCTION pg 4 pg 4 About your MODEL 3 Water Heater pg 4 Registering your unit pg 4 Downloading the Heatworks app and connecting your unit to Wi-Fi TECHNICAL DATA pg 8 TROUBLESHOOTING pg 8 INSTALLATION GUIDE pg 9 pg 9... -
Page 4: Introduction
6-year full unit exchange warranty or be eligible for the extended warranty. If you do not activate your warranty within 90 days, your MODEL 3 Water Heater will be covered from the date it was manufactured. Go to our website at www.myheatworks.com/... - Page 5 Once the Heatworks app is installed on your smart device, you will need to set up an account. To set up your account, please provide your first and last name, your email address and a password that is at least 8 characters. You must also review and agree to Heatworks’...
- Page 6 MODEL 3 unit. To do this, make sure you are standing no more than 10 feet away from the installed MODEL 3 unit to which you are pairing and that the unit is on. You will know the unit is on when you see an illuminated green button located on the front home button of the unit.
- Page 7 Step 2: Connect to the wireless network by choosing or entering your network name and network password. Step 3: The MODEL 3 will now pair with your Wi-Fi network. Once successfully completed, the app will return to your dashboard, where you can control and monitor your hot water system.
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Page 8: Technical Data
17, step 2, is excluded from this statement). Attempts to service the MODEL 3, including but not limited to, opening the casework of the unit or the pressure vessel will result in a voided warranty and deems the unit non-refundable. -
Page 9: Installation Guide
INSTALLATION GUIDE IMPORTANT SAFETY INFORMATION This manual must be read carefully and before attempting to install the MODEL 3. If you do not follow the safety rules or the instructions outlined in the manual, the unit may not operate properly and it could cause property damage, serious bodily injury and/or death. -
Page 10: Intended Use
WHAT’S INCLUDED IN THE BOX IMPORTANT: Before removing the old tank water heater and beginning installation of the new unit, unbox the MODEL 3. Remove all parts from the box and ensure all parts are included. CAUTION: It is required that a licensed plumber and electrician install the unit and that the installation must comply with all national, state and local plumbing and electric codes. - Page 11 FRONT VIEW 11.0” 13.2” 12” MIN CLEARANCE 2.2” COLD 3/4” NPT 3/4” NPT 10.0” SIDE VIEW GROUND www.myheatworks.com | 11...
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Page 12: Precautions For Selecting A Location And Installation
PRECAUTIONS FOR SELECTING A LOCATION AND INSTALLATION In general, the MODEL 3 can be installed in the same location where the old tank water heater was located or depending local codes, in a more centralized location in your home. However, to ensure safe performance and keep the warranty in effect, the following precautions must be observed: Ensure domestic water supply is turned off. -
Page 13: Connecting The Water Supply
CONNECTING THE WATER SUPPLY When using a water well supply or a water supply where sediment is commonly found in the water, Heatworks recommends installing a sand filter on the water supply line before the cold water inlet of the MODEL 3. - Page 14 3/4” NPT 3/4” NPT Correct mating fittings or adapters will need to be used to properly plumb the MODEL 3 unit. We strongly recommend installing at least 18” of copper piping or 18”of 3/4” flexible water heater connection hoses directly to the unit. When installing PEX piping, please reference material manufacturer’s recommendations/requirements and ensure it is compliant with your local...
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Page 15: Electrical Information
High voltage is present in the system. Personal injury or death can result if caution is not taken. CAUTION: Serious damage to your MODEL 3 can occur if all air is not purged from the water lines initially, or at any time after installation where air might have been introduced into your home water system. - Page 16 40% of the nameplate rating for a conventional 4.5 kW electric tank water heater is 7.5 A. So, one MODEL 3 will add 32.5 A (40 A minus 7.5 A) additional amps to the service load since 7.5 A were already available for the existing tank.
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Page 17: Electrical Installation
Verify all wiring (wire gauge) and circuit protection (breakers) comply with national and local electrical codes. The MODEL 3 requires two power conductors and one grounding conductor. The power conductors should be Line 1 and Line 2 for a typical 208, 220, or 240 VAC single phase installation. -
Page 18: Completing The Installation
Tighten the strain relief. Place the service access panel cover back in on the MODEL 3 unit and fasten it in using the two (2) screws. COMPLETING THE INSTALLATION Confirm that the cold water supply main is turned on and that main power is securely connected to the unit. - Page 19 MODEL 3 displays. ACCESSING MODEL 3 MENUS There are two different types of menus in the MODEL 3. The first is the main menu, which shows the user the current setpoint temperature (green dot), output water temperature reading (red dot), actual current draw reading in amps (purple dot), actual water flow reading in GPM (blue dot), and any error codes detected by the unit (green dot).
- Page 20 Main and Settings Menu Flowchart MAIN MENU SETTINGS MENU Power On Adjust Select Setpoint Degrees Hold Hold Temperature °C or °F Output Water Maximum Temperature Current Hold Hold Reading (amps) Actual Onboard Current Draw Reading Hold Hold WiFi (amps) Actual Water Flow Reading Hold...
- Page 21 ACCESSING AND SELECTING CENTIGRADE OR FAHRENHEIT The output and setpoint temperature of the MODEL 3 can be shown in °F or °C units. The factory setting is °F . To change the unit of temperature from Fahrenheit to Celsius, long press the green home button (approximately two (2) seconds) until the home button flashes white and “C”...
- Page 22 Now that you better understand the various menus, it is now time to select the correct amperage. IMPORTANT: Unlike other water heaters, the MODEL 3 can be adjusted from 30-100 A upon installation, depending on your specific hot water needs. The higher the power setting, the more hot water you can expect.
- Page 23 Please indicate which maximum current setting (in amps) was chosen by circling the number on the Maximum Current Setting lable located on the bottom of the unit in permanent marker. This completes the installation procedure. The MODEL 3 Water Heater is now in service. www.myheatworks.com...
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Page 24: Warranty And Legal
6-year full unit exchange warranty or be eligible for the extended warranty. If you do not activate your warranty within 90 days, your MODEL 3 Water Heater will be covered from the date it was manufactured. Go to our website at www.myheatworks. - Page 25 2) Manufacturer is not liable for any water damage or other damages to person or property arising, directly or indirectly, from any defect in the MODEL 3 Water Heater component part(s) or from its use.
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Page 26: Return Policy
A refund will not be processed if the product has been installed, used, or altered in any way. Heatworks must receive and inspect all returned products prior to processing a refund. No refunds will be processed outside of the 14-day return window. -
Page 27: Privacy Policy
Consent to international data transfers. Your personal information may be collected, processed and stored by Heatworks or its service providers in the United States and other countries where our servers reside. Please be aware that the privacy protections and legal requirements, including the rights of authorities to access your personal information, in some of these countries may not be equivalent to those in your country. - Page 28 Environmental data from the MODEL 3’s sensors: We collect data from several sensors built into the MODEL 3 Water Heater. These sensors collect data such as your location, incoming ground water temperature and your water’s conductivity. This helps your MODEL 3 deliver hot water on demand at your desired setpoint.
- Page 29 Heatworks stores this information to send this email, to register your friend if your invitation is accepted, and to track the success of our invitation services.
- Page 30 MODEL 3 Water Heater users in a particular state to help us decide what energy companies might be good partners. We may use service providers to perform some of these functions. Those service providers are restricted from sharing your information for any other purpose.
- Page 31 They may also assist with monitoring our servers for technical problems. These technicians (as well as Heatworks employees) can access certain information about you or your account in line with this work but these technicians are not allowed to use this data for non-Heatworks purposes.
- Page 32 Heatworks generally stores your personal information on Heatworks’ servers until you delete or edit it, or for as long as you remain a Heatworks customer in order to provide you with Heatworks Products. In addition, Heatworks may store your personal information to resolve disputes, establish legal defenses, conduct audits, pursue legitimate business purposes, enforce our agreements and comply with applicable laws.
- Page 33 MINORS Only individuals aged 18 and older are permitted to act as Owners of Heatworks Accounts. Authorized Users must be over the age of 13 (or equivalent minimum age in the jurisdiction where they reside) and may use the Products and Services under the supervision of a parent or legal guardian and only if they agree to be bound by these Terms on your behalf.
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Questions and answers
I need help with my Model 3 unit, and I don't know where to turn. It's next to impossible to get hot water for a shower, unless the water flow is so low that it's aggravating to try and take a shower. I have no idea how to operate the unit -- the instructions in the manual are too vague and ambiguous to be useful. Worst of all, I was told that Heatworks went bankrupt and is no longer in business so there is no one in existence who is knowledgeable about the unit or how it operates, let along to come out to my house and inspect it and service it if it is not working properly, or to adjust it, or fix it, or show me how to use it properly. I had such high hopes when I first bought the unit, and now it is not performing up to my expectations. I **** so aggravated I **** ready to plant a bomb under my house and blow the whole ediface to smithereens. I have invested over $320,000 in improving my house, above the investment to purchase it, and now, thanks to this ill-functioning device I consider my house worthless. Anyone who visits complains endlessly about this one thing -- the shower does not deliver hot water, and even when it gives halfheartedly lukewarm water (enough to be tolerably not cold), the water pressure is so low that you can't wash your hair. And after a few minutes, the hot water runs out. I thought that wasn't supposed to happen with a "tankless" water heater -- there's no "tank" to "run out" of hot water. So, why does the hot water run out and turn ice cold after a few minutes? I **** so frustrated. I don't even know if an analog human being will even read this message. My son told me Heatworks filed for Bankruptcy and went out of business so there's no way I can get service or repairs from anyone knowledgeable about the device. I didn't sign up for the app (I didn't even know that was a "thing" you could do) or register my purchase because I bought it, and then it was over two years before the contractor was even ready to install it so no one even opened the box to read the instructions. I certainly didn't read the manual -- I gave the contractor the manual and relied on him to know what to do. So, I only just noticed the "registration" instruction, four or five years after my purchase. We've been muddling along for a year with this problem, and it's just about reaching the breaking point for me. Everyone is pressing on me to rip it out and put in a more reliable, an easier to use product, and I don't want to. For starters, to tear it up and open up the walls and re-do the plumbing, and re-do the tile and the shower and everything -- I can envision it costing me $150,000 to replace the Model 3 with a rival product that will only cost $500. Is there anyone who can help me? I **** at my wits end here.
To troubleshoot the Heatworks Model 3 tankless water heater and improve hot water flow and temperature, follow these steps:
1. Check Water Connections – Inspect the COLD | INLET and HOT | OUTLET connections for any signs of damage, cracks, leakage, or weakness. Address any issues found.
2. Inspect the Filter Screen – Periodically disconnect the COLD | INLET connection and check the filter screen for debris that may be restricting water flow. Clean if necessary.
3. Purge Air from the Lines – Before powering up the unit, purge air from the water lines to prevent damage and ensure proper water flow.
4. Adjust Set Point Temperature – Use the unit's menu settings to check and adjust the set point temperature (green dot) to the desired level.
5. Check Water Flow Rate – Verify the water flow rate (blue dot) in gallons per minute (GPM) to ensure it is adequate.
6. Monitor Error Codes – Check for any error codes (red dot) displayed on the unit. If errors appear, follow troubleshooting steps based on the specific code.
7. Avoid Over-Tightening Connections – Over-tightening the water heater connections can cause internal damage, affecting performance.
8. Connect to Wi-Fi for Updates – If possible, connect the unit to Wi-Fi to receive firmware updates and access advanced reporting features.
Following these steps should help improve the water flow and temperature of your Heatworks Model 3.
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Rheem is such a **** company for letting these crappy model 3 water heaters out on the market
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