The RA-28 is the most popular residential model for providing a continuous supply of hot water for as long as you need it. Ideal for the whole house and for commercial applications such as, specialty restaurants, convenience stores, salons, and pet-grooming shops. This on-demand tankless water heater is a powerful replacement for traditional tank-type heaters and is the enabling technology for use as back-up to active renewable energy systems such as solar and geothermal water heating systems. The temperature activated control works effectively in re-circulating systems and in combination with tank-type heaters. A minimum of 200 amp, whole-house electrical service is recommended.
Features:
- UL 499 Approval Listing for Water Heating Applications
- Works with tubing and manifold systems
- No minimum flow activation required
- Built-in DSM Utility Integration option
- Compatible with Home Energy Management Systems
- No moving parts
- Very small & compact
- Light weight modular construction
- No restriction to flow
- Standard 3/4 inch plumbing connections
- Microprocessor digital control
- Power sharing & variable power control technology
- Continuous venting
- Heats continuously only when needed, no storage
- Self-diagnostics
- Redundant safety devices
- High performance polymer nylon chamber material
- Built-in Leak detector and alarm
- Rust & corrosion ressistant
Heat Output (max.): 95,0560 BTU
Power Rating (max.): 28KW
Voltage Rating (Nominal): 240 VAC
Current Rating (max.): 116 AMPS
Energy Factor: 0.99+
Heating Elements:7000 watts X 4
Circuits Required: Four (4), 2-wire w/ground*
Breakers Required: Four (4), double-pole*
Breaker Size: 30 AMPS each X 4*
Temp. Output (dial):90F to 130F (32C-52C)**
(*) Optional two ( 2), 60 AMP circuit supply - Check with manufacturer for jumpers that must be installed on control board for this option.
(**) Temp. ouput dial Factory set to 120F (49C).
(***) T & P Relief Valve not required by Mfg.
