Chronomite CM-20L/240 Instant-Flow® Tankless Water Heater
High-Efficiency, On-Demand Hot Water for Commercial Point-of-Use Applications
The Chronomite CM-20L/240 delivers reliable, on-demand hot water for commercial and institutional handwashing applications. With a higher power output than the CM15L/240, this unit is optimized for colder inlet water temperatures or higher temperature rise demands—all while maintaining an ultra-compact footprint. Designed to operate on 240 volts, it's a trusted solution for restrooms, medical facilities, offices, and other light-duty commercial installations.
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, 240 Volts, 4800 Watts
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✓ Increased heating capacity for cooler inlet water
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Temperature Rise
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~85°F at 0.40 GPM (approximate)
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✓ Ideal for colder climates or hotter wash water requirements
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Activation Flow Rate
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0.20 GPM
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✓ Activates with low-flow, eco-friendly fixtures
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Size
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6-1/4" (H) x 9-5/8" (W) x 2-3/4" (D)
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✓ Installs easily under sinks or in compact spaces
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How It Works: Instant Heating Technology
Stage 1: Flow Activation
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Function: Unit activates instantly when water flow reaches 0.20 GPM
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Benefit: Heats water only when needed—no standby energy waste
Stage 2: Precision Heating
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Function: Nichrome coil elements heat water instantly as it flows through a Celcon plastic chamber
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Benefit: Consistent temperature output—no recovery time or storage losses
Key Features
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Rugged Cast Aluminum Housing: Durable and tamper-resistant, ideal for commercial and public facilities
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Endless Hot Water: Continuous on-demand heating with no tank or downtime
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99% Energy Efficient: Uses power only when water is flowing
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Compact Design: Perfect for space-constrained installations
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Environmentally Friendly: Helps reduce water and energy waste; supports green building certifications
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Simplified Installation: No pressure relief valve needed (check with local plumbing code)
Compared to Traditional Tank Heaters
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Feature
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CM20L/240 Tankless Heater
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Traditional Tank Heater
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Energy Efficiency
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99% – Only heats water on demand
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Constant standby losses to maintain temperature
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Form Factor
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Compact (6-1/4" x 9-5/8" x 2-3/4")
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Large and requires floor or wall space
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Hot Water Supply
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Unlimited
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Limited to tank volume and recovery time
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Maintenance
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Minimal
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Requires regular descaling and inspections
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Service Life
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Long-lasting, corrosion-resistant
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Shorter lifespan due to scaling and tank failure
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Certifications & Compliance
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UL Listed: Meets UL 499 electrical safety standards
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CSA Certified: Complies with CAN/CSA C22.2 No. 88
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UPC / IAPMO Approved: Certified for plumbing code compliance
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ADA Compliant: Suitable for accessible installations
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Lead-Free: Conforms to U.S. Federal Public Law 111-380
What’s Included
- 1 × Chronomite CM20L/240 Instant-Flow® Tankless Water Heater
- 3/8" Compression Fittings for inlet/outlet
- Faucet Flow Control Adapters
- Installation and Operation Manual
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.
