REU-2532FFU Series 24 Rinnai
14. Main Components
1. Mechanical Water Regulator
Rinnai’s unique water regulator mechanism ensures the hot water is maintained with no noticeable
change to the desired temperature during use, even if water pressure drops due to another tap being
turned on and increasing the demand.
The following graph shows that maximum flow is approximately 8.5 gallons per minute for the
Continuum. This maximum flow is reached at 29 PSI inlet pressure respectively.
2. Preset Bypass
A preset volume of cold water is mixed with water heated in the heat exchanger.
3. Burner
The burner assembly is made up of 16 identical stainless steel
Bunsen burners, secured by an aluminized steel framework.
An aluminum manifold with 32 integral injectors supplies gas
to the burners, and is attached to the front lower cover of the
burner box and gas control assembly.
4. Gas Control Valve
The gas control valve uses four solenoids to fully modulate within four different input ranges to
respond quickly and accurately to changes in water flow rate. The four ranges are as follows: up to
18% of total btu’s (using three burners), up to 33% (using five burners), up to 50% (using eight
burners, and up to 100% (using sixteen burners) This increases the flexibility of the regulator/
modulating valve by supplying gas equally to each burners.
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