Rheem 850 Series Owner's Manual And Installation Instructions page 44

Gas domestic outdoor water heater
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COMMISSIONING
Using a thermometer, measure the temperature of the water from the tap,
until the temperature stops increasing.
If the water temperature is below 50°C the maximum outlet temperature of
the outlet can be adjusted upwards.
Turn the adjusting knob on the temperature limiting valve counter-clockwise
(down away from the water heater), using a 6 mm Allen key.
Turning the adjusting knob counter clockwise (down away from the water
heater) increases the outlet water temperature, turning it clockwise (up
towards the water heater) decreases the outlet water temperature.
Repeat the water temperature measurement from the same hot tap.
Further adjust the temperature limiting valve as required, turning the adjusting
knob either counter clockwise (down away from the water heater) or
RHEEMPLUS TEMPERATURE ADJUSTMENT
clockwise (up towards the water heater) to increase or decrease the outlet
water temperature, until an acceptable water temperature not exceeding
50°C is measured at the same hot tap.
Note: The valve has a stop point for the maximum outlet water temperature
adjustment. The outlet water temperature cannot be increased beyond this
point. It is possible that, depending upon valve tolerances and the pipe work
design, 50°C water temperature may not be attainable at the hot tap. The
valve does not have a stop point for the minimum outlet water temperature
adjustment. If adjusted too far, the adjustment screw will disengage and a
water leak will result. If this occurs, turn the adjustment screw counter
clockwise (down away from the water heater) to re-engage with the valve and
stop the leak.
Turn off the hot tap.
Replace the insulation and plastic casing to cover the temperature limiting
valve and pipe work on the side of the water heater and secure using the
three (3) retaining screws.
44

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