Software Updates

• If the control•r™ Wi-Fi Module or MC-195T-US timer/controller are not
installed, temporary pump operation can be initiated for 60 seconds by
resetting power to the tankless water heater (unplug the power cord from
the wall outlet, and then plug the power cord back into the wall outlet)
(Figure 3). This test is helpful if the internet is not yet available to pair
with the control•r™ Wi-Fi Module.
Setting
Number
Setting
Description
Selection
A B C D
Recirculation
Settings
No
Recirculation
Recirculation
04
Dedicated
Crossover
Mode:
Long Loop
Crossover
Mode:
Short Loop
Table 1. Recirculation Parameter Setting 04
• Recirculation parameter setting 04 must be set to your circulation mode (B, C, or D) (Table 1).
The “In Use” light on the integrated controller
(Figure 4) flashes based on the operation status of
the water heater and integrated pump; the light
indicates if recirculation is occurring (Table 2).
Pump Verification at Installation
❷
“In Use” Light
❸
Flame
Present
Recirculation
Active
Light Behavior
Solid
Indicates flame present and
water flow.
Slow Flash
Indicates flame present and
pump operation.
Rapid Flash
Indicates pump operation with
no flame present.
Table 2. “In Use” Light Behavior
Figure 4. “In Use” Light
Figure 3. Power
Cord
•