Conversion Manual for Condensing Tankless Water Heaters 7
• Do not touch any other areas on the PC board other than the described buttons while power
is supplied to the appliance. Parts of the PC board are supplied with 120 VAC.
• Do not touch the areas at or near the heat exchanger or hot water lines; these areas
become hot and could cause burns.
1 0 A
A
B
• Confirm that the inlet gas pressure is between the minimum and maximum pressures allowed
for this appliance.
IMPORTANT
CAUTION
1. Locate the PC board (lower right side of unit) (Figure 13).
2. Locate the two push buttons (“A” and “B”) on the PC board (Figure 13). Apply power.
3. Press button “A” for one second to enter parameter settings mode.
4. Press the (Up) and (Down) arrows on the controller to select setting “10” (Figure 14A).
5. After setting “10” is selected, press the “On/Off” button to change the selection. Select “1 0 A” for
Propane (LP) or “1 0 ” for Natural Gas (NG) (Figures 14B and 14C).
Figure 14A
6. To exit the parameter settings, press the “A” button on the PC board for one second.
7. Proceed to the next section (“4.4 Check Operation”) to continue the conversion steps. Need to
set gas pressures first.
Figure 14B (Propane)
10
Figure 14C (Natural Gas)
Figure 13. Push Buttons “A” and “B” on the PC Board
10
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