Chronomite CM-20L/120 Instant-Flow® Tankless Water Heater
Powerful, Compact Hot Water Solution for Light-Duty Applications
The Chronomite CM20L/120 delivers fast, on-demand hot water in a compact and energy-efficient package. Designed for commercial and institutional use, it’s ideal for point-of-use applications such as public restrooms, break rooms, and handwashing stations. With an increased power rating compared to the CM15L/120, this unit offers a higher temperature rise while maintaining low-flow compatibility and minimal energy usage.
Performance Benefits
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Feature
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Specification
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Benefit
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Power Rating
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20 Amps, 120 Volts, 2400 Watts
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✓ More heating power for slightly greater demand
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Temperature Rise
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42°F at 0.40 GPM
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✓ Delivers warmer water, ideal for colder climates
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Activation Flow Rate
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0.20 GPM
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✓ Activates with low-flow fixtures and meets water-saving standards
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Size
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6-1/4" (H) x 9-5/8" x 2-3/4"
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✓ Small enough to install directly under most sinks
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How It Works: Instant Heating Technology
Stage 1: Flow Activation
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Function: Activates automatically when water flow reaches 0.20 GPM
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Benefit: Prevents energy waste with no standby heating
Stage 2: Precision Heating
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Function: Nichrome coil heats water instantly as it flows through a Celcon plastic chamber
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Benefit: Ensures consistent temperature output and responsive performance
Key Features
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Durable Housing: Cast aluminum construction resists damage in commercial environments
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Instant Hot Water: Provides unlimited hot water on demand—never wait or run out
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High Efficiency: 99% energy efficient—heats water only when needed
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Compact Design: Easily fits in tight under-sink spaces
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Eco-Friendly: Reduces both water and electricity usage
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No Pressure Relief Valve Needed: Simplifies installation (check local code requirements)
Compared to Traditional Tank Heaters
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Feature
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CM20L/120 Tankless Heater
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Traditional Tank Heater
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Energy Efficiency
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99% – Operates only when water flows
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Constant standby energy loss
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Size
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6-1/4" x 9-5/8" x 2-3/4"
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Large, space-consuming tank
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Hot Water Supply
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Unlimited
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Limited to tank capacity
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Maintenance
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Very low maintenance
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Requires regular tank flushing and service
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Lifespan
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Extended lifespan
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Prone to scale buildup and corrosion
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Certifications & Compliance
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UL Listed: Compliant with UL Standard 499
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CSA Certified: Certified under CAN/CSA C22.2 No. 88
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UPC / IAPMO Approved: Meets North American plumbing codes
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ADA Compliant: Suitable for accessible public facility installation
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Lead-Free: Meets Federal Public Law 111-380
What's Included
- 1 × Chronomite CM20L/120 Instant-Flow® Tankless Water Heater
- 3/8" Compression Inlet and Outlet Fittings
- Faucet Flow Control Adapters
- Installation & Operation Instructions
Ships with standard (ADJ) option. To request a preset factory temperature at 104°, 110° or 120°F, please email us immediately after placing your order.
Installation:
A licensed plumber is required for installation per your local regulatory requirements.
Before beginning, turn off the breaker and disconnect the electrical supply to the area.
Shut off the water supply to the fixture.
Double‑check that everything has been turned off prior to proceeding.
For optimal performance, Chronomite electric tankless water heaters should always be installed within 18 inches of the point of use.
Maintenance:
Periodically inspect the supply lines, connections, and heater for any moisture, corrosion, or other preventable problems.
