Temperature Settings - American Water Heater 52 Series Instruction Manual

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Table Of Contents

Table of Contents

DIFFERENTIAL SETTINGS

Adjustable user setting(s) 1°F to 20° range; factory default is 2°F.

The water heaters covered in this Instruction Manual will have 3,

6 or 9 heating elements. Each group of 3 heating elements is one

"Bank" of heating elements. Heating elements are energized in

Banks of 3. Each Bank of heating elements will have a Differential

Setting associated with it. Differential Settings are located in the

Temperatures Menu.

There is a 1st Differential Setting on all models. There will be

one additional Differential Setting visible/adjustable for each

additional Bank of (3) heating elements.

OPERATING SEQUENCE

With an Operating Set Point of 120 °F and all Differential settings

at 2 °F, the On/Off sequencing of heating element Banks would

be as follows:

DIFFERENTIAL

BANK NUMBER

SETTING

Bank 1

2°F

Bank 2

2°F

Bank 3

2°F

From the Desktop Screen, press the Operational Button underneath

"MENU" to enter the Main Menu.

Notice how the text above the Operational Buttons on the dis-

play changes as you navigate through the various menus and

screens.

With Temperatures selected (highlight in black) in the Main Menu,

press the Operational Button underneath "SELECT" to enter the

Temperatures Menu.

If Temperatures is not selected use the Up and Down buttons to

select this menu item.

With the Operating Set Point selected in the Temperatures Menu,

press the Operational Button underneath "CHANGE" to activate the

adjustment mode for this menu item.

Press the Up and Down buttons to adjust the Operating Set Point to the

desired setting.

Press the Operational Button underneath "UPDATE" to confirm the

new setting. Press the Operational Button underneath "CANCEL" to

discard the new setting and retain the previous setting.

The new Operating Set Point value should now be displayed as the

current value.

NOTE: Use this same procedure to adjust the Differential settings

and the Tank Probe Offset in the Temperatures Menu.

This same procedure is used to change user settings in other control

system menus.

TURN OFF

TURN ON TEMP

TEMP

118°F

120°F

116°F

118°F

114°F

116°F

Table 9. Changing Temperature Settings from the Desktop Screen

ACTION

TANK TEMPERATURE

Non adjustable information display. Current water temperature as

sensed by the control system from the immersion Temperature

Probe.

TANK PROBE OFFSET

User adjustable setting -5°F to +5°F range; factory default is 0°F.

If the current Tank Temperature is sensed (from the immersion

Temperature Probe) at 120°F and the offset is adjusted to -5°F the

control system would calibrate or "offset" the Tank Temperature

to 115°F. Heating cycles would then start/stop based on the

calibrated Tank Temperature.

Used to calibrate for slight differences in control system

temperature sensing. This can improve the precision of

temperature control in the storage tank and at points of use. This

feature can also be used to compensate for building recirculation

loops (hot water returning to the storage tank) that may cause

the heating cycle to terminate prematurely.