Chronomite CM-12L/277 Instant-Flow® Tankless Water Heater
Compact, Efficient Hot Water Delivery for 277V Commercial Applications
The Chronomite CM-12L/277 tankless water heater provides efficient, on-demand hot water for commercial buildings utilizing 277-volt electrical service. Designed for handwashing stations, restrooms, and other point-of-use installations, this model combines compact size, fast response, and low energy use—making it ideal for schools, hospitals, office buildings, and industrial facilities.
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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12 Amps, 277 Volts, 3,324 Watts
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✓ Efficient heating for light-duty commercial use
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Temperature Rise
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~59°F at 0.40 GPM (approximate)
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✓ Provides comfortable warm water for handwashing
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Activation Flow Rate
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0.20 GPM
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✓ Compatible with modern low-flow 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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✓ Compact footprint for easy under-sink installations
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How It Works: Instant Heating Technology
Stage 1: Flow Activation
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Function: Activates when flow reaches 0.20 GPM
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Benefit: No standby energy usage—unit only heats water when needed
Stage 2: Precision Heating
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Function: Nichrome coil elements heat water instantly inside a Celcon flow chamber
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Benefit: Delivers consistent hot water with no tank and no recovery time
Key Features
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Durable Cast Aluminum Housing: Tamper-resistant and corrosion-resistant for commercial use
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Endless Hot Water: Provides continuous hot water on demand
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99% Energy Efficient: No standby loss—uses energy only during operation
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Compact Design: Fits under sinks or in tight enclosures
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Environmentally Friendly: Helps conserve water and energy—ideal for green buildings
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No Pressure Relief Valve Required: Simplifies installation (check local codes)
Compared to Traditional Tank Heaters
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Feature
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CM12L/277 Tankless Heater
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Traditional Tank Heater
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Energy Efficiency
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99% – Heats only on demand
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Constant standby losses
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Size
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Compact: 6-1/4" x 9-5/8" x 2-3/4"
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Large and space-consuming
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Hot Water Supply
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Unlimited
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Limited to tank capacity and recovery rate
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Maintenance
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Minimal upkeep
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Regular descaling and service needed
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Service Life
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Long-lasting, no internal tank corrosion
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Shorter due to corrosion and scale buildup
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Certifications & Compliance
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UL Listed: UL 499 electrical safety standard
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CSA Certified: Meets CAN/CSA C22.2 No. 88
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UPC / IAPMO Approved: Plumbing code compliant
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ADA Compliant: Suitable for public and accessible installations
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Lead-Free: Complies with U.S. Public Law 111-380
What’s Included
- 1 × Chronomite CM12L/277 Instant-Flow® Tankless Water Heater
- 3/8" Compression Fittings (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.
