Use And Care Manual

whl-590 Rev. 003 Rel. 003 Date 3.22.18

I. Using Recirculation Modes - Step 1

The following section explains and details the use of the Internal / External Recirculation Modes.

Figure 54 - Recirculation Modes

Program the Master and Follower Water Heaters in a Cascade System:

To program the cascade system, rst enter the Installer Mode. Scroll down to and select the following parameters on each water heater in the

system:

1. 9:cP – Set the number of units in the cascade loop [range from 1-20].

2. 8:cn – Next, set the cascade address (Master should always be addressed 0) [range from 0-19]. 15:cn cannot be changed until 16:cP is set.

NOTE: The cascade Master must be addressed 0. Followers may be given any address from 1 - 19, but addresses should NEVER be repeated.

NOTE: To service any follower unit, turn main power switch o to that unit.

Program the Master Water Heater Setpoint:

To nish programming the cascade system, enter the Installer Mode on the Master ONLY.

1. Set the DHW setpoint on the Master. This DHW setpoint will be the same on all of the Followers.

2. Set the Water Heater Recirculation Function (if used).

Figure 55 - Cascade Display Screen Examples