Rinnai B20 Service Manual download pdf (Page 24)

REU-2532W 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.

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 71 72

No comments

Rinnai B20 Service Manual Page 24