1.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 of the 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 Diagnostics

1.Provide ignition module indicating the following heartbeats (flashes) by LED signal: “M” Ignition Model (Continuous Retry)

a.2 flashes per second (“heartbeat”) – Normal operation

b.2 flashes – Five-minute retry delay

c.3 flashes – Recycle; flame failed during run

d.4 flashes – Flame sensed out of sequence

e.7 flashes – Flame sense leakage to ground

f.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 seconds

j.ON steady – Soft lockout due to error detected during self-check sequences

“H” Ignition Model (Lockout)

k.2 flashes per second (“heartbeat”) – Normal operation

l.2 flashes – Five-minute retry delay

m.3 flashes – Recycle; flame failed during run

n.4 flashes – Flame sensed out of sequence

o.7 flashes – Flame sense leakage to ground

p.8 flashes – Low 24VAC (secondary voltage)

q.6+2 flashes – Failed trial for ignition resulting in lockout

r.6+3 flashes – More than five flame failures during run on the same “Call For Heat” resulting in lockout

s.6+4 flashes – Flame sensed out of sequence for more than 10 seconds

t.ON steady – Soft lockout due to error detected during self check sequences

I.Combustion Chamber: The high-temperature, multi-piece, interlocking castable combustion chamber liner shall reduce standby radiation losses, reducing jacket losses and increasing unit efficiency.

J.Venting

1.When routed vertically, the water heater’s flue material and size shall be in accordance with the National Fuel Gas Code, ANSI Z223.1/NFPA54 latest edition (Category I).

K.Cabinet

1.The corrosion-resistant galvanized steel jackets shall be finished with a baked-on epoxy powder coat which is suitable for outdoor installation, applied prior to assembly for complete coverage, 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 separate combustible floor base.

L.Operating Controls

1.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 being specified. IMPORTANT: The Cold Water Start and Cold Water Run Systems cannot be used on the same water heater.

M.Water Heater Pump - Refer to Equipment Schedule

N.Cold Water Start System

1.The water heater(s) shall be configured with a cold water start automatic proportional bypass system that ensures the water heater will experience inlet temperatures in excess of 105ºF within 7 minutes to avoid damaging condensation. The unit will automatically shut down if the

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Raypak Finned Water-Tube Water Heaters dimensions
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Finned Water-Tube Water Heaters specifications

Raypak Finned Water-Tube Water Heaters are renowned for their efficiency, durability, and advanced technology, making them a preferred choice for both residential and commercial applications. These heaters are designed to provide hot water consistently and reliably, catering to a wide range of temperature requirements.

One of the primary features of Raypak Finned Water-Tube Water Heaters is their unique finned-tube design. This design increases the surface area of the heat exchanger, allowing for maximum heat transfer and improved thermal efficiency. The finned tubes facilitate superior heat exchange with the water flowing through them, ensuring that hot water is readily available even during periods of high demand.

Raypak integrates advanced technologies in their water heaters to enhance performance and energy efficiency. The units are equipped with advanced control systems that allow for precise temperature regulation, reducing energy consumption and preventing overheating. Additionally, many models feature modulating burners, which adjust the firing rate based on the heating demand, ensuring optimal efficiency and reduced emissions.

Durability is another hallmark of Raypak's engineering. The water-tube construction is designed to withstand high pressures and temperatures, making these heaters suitable for high-demand applications. The units are constructed with high-quality materials that resist corrosion and wear, ensuring a long operational life with minimal maintenance.

Raypak also prioritizes safety in their heater designs. Features such as automatic shut-off valves, flame detection systems, and pressure relief valves are incorporated to ensure safe operation in various conditions. These safety mechanisms protect both the user and the equipment, adding peace of mind to the investment.

Energy efficiency ratings for Raypak Finned Water-Tube Water Heaters are typically high, qualifying for energy rebates and incentives in many areas. This efficiency translates to lower operating costs and environmental benefits, aligning with the global shift towards sustainable practices.

In summary, Raypak Finned Water-Tube Water Heaters stand out for their innovative design, advanced technology, and robust safety measures. They provide exceptional heating performance suited for myriad applications, making them a reliable choice for consumers looking to invest in high-quality water heating solutions. With ongoing advancements in technology, Raypak continues to lead the way in delivering efficient and effective water heating systems that meet modern demands.
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