Innovation - Edge [i] Installation, Operation, Maintenance Manual
CHAPTER 4 – INITIAL START-UP
4.5.2 Minimum Load Adjustment
With the unit in operation, check the temperature control at minimum load as described below.
1. Go to: Main Menu → Advanced Setup → Performance → Temperature Control → FFWD
Settings.
Figure 4.5.2: FFDW Settings Screens
2. Set the Outlet Feedback parameter to No.
3. While monitoring the Valve Position bar-graph, create a minimum load on the system that will
yield a steady valve position between 25% and 35%.
NOTE:
It may be desirable to shut off the outlet valve and use the drain valve on the hot water outlet
pipe (see Figure 2.6) to simulate a minimum load condition.
4. Wait several minutes to allow the outlet temperature to stabilize under load conditions.
5. Once stabilized, the outlet temperature displayed on the Controller should read no more than
2 to 3 °F (1.1 to 1.65 °C) above the unit’s setpoint.
6. If the outlet temperature is stabilized, proceed to Section 4.5.3: Maximum Load Adjustment .
If the temperature is not stabilized, proceed to step 7.
7. Raise or lower the Min Load Adj by one or two degrees (increasing it will increase outlet
water temperature), then allow time for the system to stabilize.
8. Repeat step 7 as needed until the temperature is stabilized at no more than 2 to 3 °F (1.1 to
1.65 °C) above the unit’s setpoint.
9. Return the Outlet Feedback parameter to Yes.
1. Go to: Main Menu → Advanced Setup → Performance → Temperature Control → FFWD
Settings (see Figure 4.5.2, above).
2. Set the Outlet Feedback parameter to No.
3. While monitoring the Valve Position bar-graph, create a maximum load on the system that will
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