John Wood Concentric Vent - JW98-DVC - Manuel (Page 21)

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• When changing the temperature, make sure to confirm with the customer that the temperature of
the hot water will be very high and that there is a risk of scalding.
• Water temperatures above 52 C (125 F) can cause severe burns or death from scalding.
WARNING
* The water heater has been factory set to allow a maximum temperature setting of 50 C (122 F).
To access higher temperature settings through the remote controller, follow the below steps.
<When setting the maximum temperature to 55-60 C (130-140 F)>
1. Turn the water heater off by pressing the ON/OFF button on the remote controller.
2. Press and hold the FLOW METER ALARM SET button until a sound is heard (2 sec.) and 50 C (122 F)
appears on the display.
3. Set the upper limit of the hot-water supply temperature to 55°C(130°F) or 60°C (140°F) using the
UP and DOWN setting buttons.
4. To put the water heater back into operation, press the ON/OFF button on the remote controller.
To keep the water heater off, let the unit sit for 30 sec. to return to the original display.
<When setting the maximum temperature to 55-83 C (130-180 F)>
1. Turn the water heater off by pressing the ON/OFF button on the remote
controller.
2. Disconnect electrical power to the water heater.
3. Remove the front cover of the water heater (4 screws).
4. Connect "WATER TEMPERATURE ADJUSTMENT CONNECTOR" tag
connector to "180 F" tag connector as shown on the right.
5. Replace the front cover of the water heater (4 screws).
6. Reconnect electrical power to the water heater, but do not turn it on.
7. Press and hold the FLOW METER ALARM SET button until a sound is
heard (2 sec.) and 50 C (122 F) appears on the display.
8. Set the upper limit of the hot-water supply temperature to
55 C (130 F), 60 C, 65 C, 70 C, 75 C (140 F, 149 F, 158 F, 167 F) or 83 C (180 F)
using the UP and DOWN setting buttons.
9. To put the water heater back into operation, press the ON/OFF button on the remote controller.
To keep the water heater off, let the unit sit for 30 sec. to return to the original display.
• The JW98-DVC can be programmed so that it will default to one of four temperatures if the remote
controller is removed (80 C, 60 C, 55 C, 50 C (176 F, 140 F, 130 F, 122 F)). To change the default
temperature, connect the temperature selection wire as shown in the above diagram. The default tem-
perature is 50 C (122 F) when the temperature selection wire is not connected.
Operation Panel
W AT ER TEMPERA
TURE
ADJUSTMENT CONNECT
OR
WATER TEMPERATURE
ADJUSTMENT CONNECTOR (the back : 55 C) (the back : 60 C)
(the back : 83 C)