Raypak Raytherm Finned Water-Tube Water Heaters Specifications

Project Name / Date Division 23 52 33.13 - 31. The water heater(s) shall be equipped to (a), (b), or (c):a. Provide full modulation of gas input to any load condition as low as 20% of the full rating ofthe water heater (5:1 ratio) without flashback, burning at orifices or improper combustion.b. Provide staged control of the gas input to the water heater.c. Provide on/off control of the gas input to the water heater.H. Water Heater Diagnostics1. Provide ignition module indicating the following heartbeats (flashes) by LED signal:“M” Ignition Model (Continuous Retry)a. 2 flashes per second (“heartbeat”) – Normal operationb. 2 flashes – Five-minute retry delayc. 3 flashes – Recycle; flame failed during rund. 4 flashes – Flame sensed out of sequencee. 7 flashes – Flame sense leakage to groundf. 8 flashes – Low 24VAC (secondary voltage)g. 6+2 flashes – Five-minute retry delay (on every third retry on the same “Call For Heat”h. 6+3 flashes – On every sixth flame failure during run on the same “Call For Heat”i. 6+4 flashes – Flame sensed out of sequence for more than 10 secondsj. ON steady – Soft lockout due to error detected during self-check sequences“H” Ignition Model (Lockout)k. 2 flashes per second (“heartbeat”) – Normal operationl. 2 flashes – Five-minute retry delaym. 3 flashes – Recycle; flame failed during runn. 4 flashes – Flame sensed out of sequenceo. 7 flashes – Flame sense leakage to groundp. 8 flashes – Low 24VAC (secondary voltage)q. 6+2 flashes – Failed trial for ignition resulting in lockoutr. 6+3 flashes – More than five flame failures during run on the same “Call For Heat” resultingin lockouts. 6+4 flashes – Flame sensed out of sequence for more than 10 secondst. ON steady – Soft lockout due to error detected during self check sequencesI. Combustion Chamber: The high-temperature, multi-piece, interlocking castable combustionchamber liner shall reduce standby radiation losses, reducing jacket losses and increasing unitefficiency.J. Venting1. When routed vertically, the water heater’s flue material and size shall be in accordance withthe National Fuel Gas Code, ANSI Z223.1/NFPA54 latest edition (Category I).K. Cabinet1. The corrosion-resistant galvanized steel jackets shall be finished with a baked-on epoxypowder coat which is suitable for outdoor installation, applied prior to assembly for completecoverage, and shall incorporate louvers in the outer panels to divert air past heated surfaces.2. The water heater(s), if located on a combustible floor, shall require an optional separatecombustible floor base.L. Operating Controls1. The water heater(s) shall feature an optional temperature controller.Specifier Note: The remaining items in this section are options. Delete those that are not beingspecified. IMPORTANT: The Cold Water Start and Cold Water Run Systems cannot beused on the same water heater.M. Water Heater Pump - Refer to Equipment ScheduleN. Cold Water Start System1. The water heater(s) shall be configured with a cold water start automatic proportional bypasssystem that ensures the water heater will experience inlet temperatures in excess of 105ºFwithin 7 minutes to avoid damaging condensation. The unit will automatically shut down if the

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