Temperatures Menu (cont)

 

 

 

 

Description/Action

Display

 

Tank Temperature - non adjustable - control system

Top of Menu

 

 

sensed temperature (averaged from upper and lower

Temperatures

 

 

temperature probes).

Operating Set Point

 

140°F

Upper Temperature - non adjustable - control system

 

Differential

 

8°F

 

sensed temperature from the Upper Temperature Probe.

 

Lower Temperature - non adjustable - control system

Tank Temperature

 

120°F

Upper Temperature

 

122°F

 

sensed temperature from the Lower Temperature Probe.

 

(Heater Regulated to Tank) - non adjustable -

Lower Temperature

 

118°F

(Heater Regulated to Tank)

 

 

configuration information.

 

Upper Probe & Lower Probe Offset - adjustable user

Upper Probe Offset

 

0°F

 

setting, range -5° to +5° (factory setting 0°).

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Note: These settings should only be used if the hot water

 

 

 

 

 

supply temperature varies greatly from the Operating Set

Bottom of Menu

 

 

Point setting.

 

 

The Upper and Lower Probe Offsets are used to calibrate

Temperatures

 

 

control system temperature sensing. This can improve the

Differential

 

8°F

 

precision of temperature control in the storage tank and at

 

 

Tank Temperature

 

120°F

 

points of use. This feature can also be used to compensate

 

 

Upper Temperature

 

122°F

 

for building recirculation loops (hot water returning to the

 

 

Lower Temperature

 

118°F

 

storage tank) that may cause the heating cycles to terminate

 

 

prematurely.

(Heater Regulated to Tank)

 

 

Example: If the current sensed temperature from a

Upper Probe Offset

 

0°F

 

Lower Probe Offset

 

0°F

 

temperature probe is 120°F (49°C) and the Offset setting for

 

 

that probe is adjusted to a value other than 0°, the control

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system would calibrate or “offset” the sensed temperature

 

 

 

 

 

from the probe and the averaged tank temperature. Heating

 

 

 

 

cycles would be activated and deactivated based on the

 

 

 

 

calibrated (offset) temperature.

 

 

 

These settings are adjusted in the same way described for the Operating Set Point And Differential Adjustment on page 46.

Heater Status Menu

 

Description/Action

Display

 

Select Heater Status from the Main Menu and press the

Top of Menu

 

Operational Button under "SELECT" to enter this menu. This

Heater Status

 

menu contains non adjustable operational information. Use the

Status

Standby

Up & Down Buttons to navigate the menu.

Status - displays the current Operating State, see Table 12

ECO Contact

Closed

Low Gas PS

Closed

 

on page 46.

ECO Contact, Low Gas PS, Blocked Inlet PS, Blocked

Blocked Inlet PS

Closed

Blocked Outlet PS

Closed

 

Outlet PS, Blower Prover PS - displays the current state

 

of the switch contacts; open or closed.

Blower Prover PS

Open

Blower On, Igniter On, Gas Valve On - displays whether

Blower On

No

 

or not the control system is currently energizing these water

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heater components; yes = energized, no = de-energized.

 

 

 

Igniter Current - displays whether or not the control

Bottom of Menu

 

 

system has detected the required minimum current, see

 

 

Sequence Of Operation on page 46.

Heater Status

 

Flame Detected - displays whether or not the control

Blower On

No

 

system has detected Main Burner flame during ignition from

 

Igniter On

No

 

the flame sensor.

External Input Enable - displays whether or not the S1

Igniter Current

No

Gas Valve On

No

 

dipswitches have been configured to activate the enable/

 

disable circuit, see Enable/Disable Circuit on page 46.

Flame Detected

No

Ignition Trials - displays whether or not the S1 dipswitches

External Input Enable

No

 

have been configured to allow 1 or 3 trials for ignition

Ignition Trials

3

 

before declaring an "Ignition Failure" Fault condition, see

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the CCB - Central Control Board Layout on page 46.

 

 

 

46

Page 46
Image 46
State Industries SUF-130- 300/400/500 instruction manual Change Back Help