50 • Residen al Gas Tankless Water Heater Use and Care Guide
Se ng Recircula on Mode and Recircula on Type
Table 20: Recircula on Mode Se ngs
Ac va ng the Recircula on Modes & Se ng the Aquasta c Parameters
Built-in Controller
1
Press and hold the SETTING bu on to enter A mode.
2
Press the UP arrow to mode A05.
3
Press the SETTING bu on. The display will
fl
ash the current stored se ng.
4
Press the UP arrow to display 1.
5
Press the SETTING bu on to save the se ng. The display then will alternate between
the mode number and se ng.
6
Press the UP arrow to display A06 and/or A07 based on the recircula on mode and
ac va on/deac va on modes:
a. Set A06 to:
•
Press SETTING, then press UP or DOWN to select the desired mode.
•
0 for Recircula on with a Return Line.
•
1 for Recircula on with a Crossover Valve.
•
Press SETTING to save the selec on.
b. Set A07 to:
•
Press the UP arrow to display A07
•
Press SETTING, then press UP or DOWN to select the desired mode.
•
0 to ac vate the pump with the Pump Timers. Go to step 7.
•
1 to ac vate the pump with the On-Demand Push Bu on.
•
Press SETTING to save the selec on. Go to step 19.
Steps 7-10 sets the standby me from the previous heater opera on, in minutes, ll
the next pump ac va on.
7
Press the DOWN bu on to go to mode A02.
8
Press the SETTING bu on to change the me delay se ng. Refer to Table 17 on page
48 for available mes.
OPERATION
