State Industries Water Heater SEH 200 THRU SEH 10000 User Manual

Commercial Electric Xi Control Instruction Manual  
CoMMErCIal ElECtrIC watEr hEatEr  
ModEls sEV-150 thru sEV-10000  
sEh-200 thru sEh-10000  
up to 150kw  
500 Tennessee Waltz Parkway  
Ashland City, TN 37015  
plaCE thEsE InstruCtIons adjaCEnt to hEatEr and notIfy ownEr to kEEp for futurE rEfErEnCE.  
PRINTED 0910  
318579-000  
Download from Www.Somanuals.com. All Manuals Search And Download.  
GEnEral safEty InforMatIon  
prECautIons  
hydroGEn Gas (flaMMaBlE)  
DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER  
WATER. Immediately call a qualified service technician to inspect  
the appliance and to replace any part of the control system which  
has been under water.  
If the unit is exposed to the following, do not operate heater until all  
corrective steps have been made by a qualified service agency.  
1. External fire.  
2. Damage.  
3. Firing without water.  
GroundInG InstruCtIons  
This water heater must be grounded in accordance with the National  
ElectricalCodeand/orlocalcodes.Thesemustbefollowedinallcases.  
Failure to ground this water heater properly may also cause erratic  
control system operation on ELECTRONIC CONTROL models.  
Hydrogengascanbeproducedinahotwatersystemservedbythisheater  
that has not been used for a long period of time (generally two weeks or  
more). Hydrogen gas is extremely flammable. To reduce the risk of injury  
under these conditions, it is recommended that the hot water faucet be  
opened for several minutes at the kitchen sink before using any electrical  
appliance connected to the hot water system. If hydrogen is present there  
will probably be an unusual sound such as air escaping through the pipe  
as the water begins to flow. THERE SHOULD BE NO SMOKING OR  
OPEN FLAME NEAR THE FAUCET AT THE TIME IT IS OPEN.  
This water heater must be connected to a grounded metal, permanent  
wiring system, or an equipment grounding conductor must be run with  
the circuit conductors and connected to the equipment grounding  
terminal or lead on the water heater.  
when servicing this unit, verify the power to the unit is turned off prior to opening the control cabinet door.  
3
Download from Www.Somanuals.com. All Manuals Search And Download.  
taBlE of ContEnts  
this manual contains the operating instructions for the commercial electric Xi control. It is intended to be used in conjunction with  
the water heater instruction manual.  
SAFE INSTALLATION, USE AND SERVICE........................ 2  
GENERAL SAFETY INFORMATION.................................... 3  
Precautions...................................................................... 3  
Hydrogen Gas (Flammable)............................................. 3  
INTRODUCTION.................................................................. 4  
Preparing for the Installation............................................ 4  
ELECTRICAL DATA.............................................................. 5  
General ............................................................................ 5  
Branch Circuit .................................................................. 5  
Heater Circuits ................................................................. 5  
Control Circuits ................................................................ 5  
Power Circuit.................................................................... 5  
WIRING DIAGRAMS............................................................ 6  
TEMPERATURE REGULATION .......................................... 7  
High Temperature Limit Controls (ECO) .......................... 7  
Thermostat Controls ........................................................ 7  
Mixing Valves................................................................7-8  
Temperature Adjustment.................................................. 8  
CONTROL SYSTEM OPERATION ...................................... 9  
Heating Element Operation.............................................. 9  
Control System Features ................................................. 9  
Control System Navigation .............................................. 9  
The Desktop Screen ........................................................ 9  
Temperatures Menu....................................................... 12  
Water Heater Status Menu............................................. 14  
Economy Mode Settings...........................................16-18  
Alarm Output Setup Menu ............................................. 19  
Heater Information Menu ............................................... 19  
Current Fault / Alert Menu.............................................. 20  
Fault History Menu......................................................... 20  
Fault Occurence Menu................................................... 20  
Restore Factory Defaults Menu ..................................... 21  
TROUBLESHOOTING CHECKLIST .................................. 22  
Not Enough or No Hot Water......................................... 22  
Water Is Too Hot ............................................................ 22  
Water Heater Makes Strange Sounds ........................... 22  
Notes.................................................................................. 23  
IntroduCtIon  
Thank You for purchasing this water heater. Properly installed and  
maintained, it should give you years of trouble free service.  
for basic installation of this product. IT IS NECESSARY  
THAT ALL THE ELECTRICAL WIRING BE INSTALLED  
AND CONNECTED AS SHOWN IN THE DIAGRAMS.  
Abbreviations Found In This Instruction Manual:  
Be sure to turn off power when working on or near  
the electrical system of the water heater. Never touch  
electrical components with wet hands or when standing  
in water. When replacing fuses always use the correct  
size for the circuit. Use same size and type of fuse  
when replacing.  
ANSI - American National Standards Institute  
ASME - American Society of Mechanical Engineers  
NEC - National Electrical Code  
NFPA - National Fire Protection Association  
2. The installation must conform with these instructions  
and the local code authority having jurisdiction and the  
requirements of the power company. In the absence of  
code requirements, follow NFPA-70 (current edition). The  
National Electrical Code may be ordered from: National  
Fire Protection Association, 1 Batterymarch Park, Quincy,  
MA 02269.  
prEparInG for thE InstallatIon  
1. Read the “General Safety” section of this manual first  
and then the entire manual carefully. If you don’t follow  
the safety rules, the water heater may not operate safely.  
It could cause DEATH, SERIOUS BODILY INJURY AND/  
OR PROPERTY DAMAGE.  
3. If after reading this manual you have any questions or do  
not understand any portion of the instructions, call the toll  
free number on the back cover for further assistance.  
This manual contains instructions for the installation,  
operation, and maintenance of the water heater. It  
also contains warnings throughout the manual that you  
must read and be aware of. All warnings and all instructions  
are essential to the proper operation of the water  
heater and your safety. READ THE ENTIRE MANUAL  
BEFORE ATTEMPTING TO INSTALL OR OPERATE THE  
WATER HEATER.  
4. Installation and service of this water heater requires ability  
equivalent to that of a licensed tradesman or qualified  
agency (page 2) in the field involved. Plumbing and  
electrical work are required.  
5. Massachusetts Code requires this water heater to be  
installed in accordance with Massachusetts 248-CMR  
2.00: State Plumbing Code and 248-CMR 5.00.  
General outline diagrams are in this manual. These  
diagrams will serve to provide the installer with a reference  
4
Download from Www.Somanuals.com. All Manuals Search And Download.  
ElECtrICal data  
GEnEral  
Control CIrCuIts  
Check the water heater model and rating plate information against The water heater is equipped with an electronic control system. The  
the characteristics of the branch circuit electrical supply. Do not system includes a CCB (Central Control Board) circuit board, an  
connect the heater to an improper source of electricity.  
immersion temperature probe with ECO for temperature sensing and  
limiting, a UIM (User Interface Module) for user interface & information  
Voltage applied to the water heater should not vary more than +5% to display and element current sensors for monitoring the power circuits.  
-10% of the model and rating plate marking for satisfactory operation. Refer to the control circuit label on the water heater for details. The  
CCB is powered by a small 120V/24V transformer. The control circuit  
Do NOT energize the branch circuit for any reason before the water operates on 120V supplied by a larger 100VA transformer.  
heater tank is filled with water. Doing so may cause the heating  
elements to fail.  
sequence of operation  
The installation must conform to these instructions and the local 1. When the control is powered, the UIM should display model  
code authority having jurisdiction. Grounding and electrical wiring  
connected to the water heater must also conform to the National  
Electrical Code, NFPA 70. This publication is available from The  
National Fire Protection Association, 1 Batterymarch Park, Quincy,  
MA 02269.  
information, water temperature, operating setpoint, heating  
status and operating mode.  
2. If the control determines that the actual water temperature inside  
the tank is below the programmed operating setpoint minus the  
(1st) differential setpoint, a call for heat is activated.  
BranCh CIrCuIt  
3. After all safety checks are verified the CCB will energize the  
contactor coil(s). On models with more than one heating  
element the upper most heating elements are energized first.  
Successive heating elements are energized according to  
programmed differential setpoints for each heating element.  
The branch circuit wire size should be established through reference  
to the NEC (National Electrical Code) or other locally approved  
sources in conjunction with the water heater amperage rating.. Wire  
rated at 75°C should be used. For convenience, portions of the wire  
size tables from the Code are reproduced in Table 1 on page 9. It  
is suggested the electrician size the branch circuit at 125 percent  
of the heater rating and further increase wire size as necessary to  
compensate for voltage drop in long runs. Voltage drop should not  
exceed 3% at the water heater.  
4. The control remains in the heating mode until the water  
temperature reaches the programmed operating setpoint. At  
this point the contactors will be de-energized.  
5. The control system now enters the standby operating mode  
while continuing to monitor the water temperature and the state  
of other system devices. If the water temperature drops below  
the programmed Operating Setpoint minus the (1st) differential  
setpoint, the control will automatically return to step 2 and repeat  
the heating cycle.  
hEatEr CIrCuIts  
The water heater’s electrical components are pictured and identified  
in the Features and Components illustrations in Diagrams 1 and 2.  
The model and rating plate provides heater circuit ratings. There are  
two main electrical circuits:  
powEr CIrCuIt  
Control Circuit: Power supply for the electromagnetic  
contactor coils. 120V power is supplied to the contactor coils  
by the CCB (Central Control Board) see wiring diagrams in  
this manual.  
Power circuit wiring is type THHN (or equivalent) rated 600 volts,  
105°C, sized as necessary.  
The following wiring diagrams on page 6 are included in this manual  
to show typical arrangements of electrical components in the control  
and power circuits by voltage and phase characteristics. They are to  
be used as a reference by the installer or servicer in performing their  
work. An actual diagram of the water heater wiring is furnished with  
the water heater.  
Power Circuit: High voltage, single or three phase, circuit that  
carries the heating element load.  
The following section and pages describe the water heater circuits  
and includes wiring diagrams.  
5
Download from Www.Somanuals.com. All Manuals Search And Download.  
wIrInG dIaGraMs  
dIaGraM 1. larGE CoMMErCIal wIrE dIaGraM 208-240V / 3ph  
dIaGraM 2. larGE CoMMErCIal wIrE dIaGraM 300-600V/3ph  
24V  
X-FMR  
WHT  
300-600V/3  
BLK  
BLK  
N
PILOT  
X-FMR  
SEC.  
FUSE  
PRIMARY  
FUSES  
SWITCH  
120V SEC  
BLK  
WHT  
GRN  
C5  
C4  
C3  
C2  
C1  
SDI  
BLK  
5 4 3 2 1  
FUSES  
JUMPER  
LWCO  
RED  
CNTCTR(S)  
TO DISPLAY  
C1  
C2  
C3  
C4  
C5  
ELEMENT ORDER = E1 THROUGH E10  
STD. WIRING  
OPT’L WIRING  
OR IF SO EQUIPPED  
6
Download from Www.Somanuals.com. All Manuals Search And Download.  
tEMpEraturE rEGulatIon  
hIGh tEMpEraturE lIMIt Controls (ECo)  
MIXInG ValVEs  
This water heater is equipped with an ECO (energy cut off). This  
switch is adjustable, up to 190 degree F. An ECO is a normally  
closed switch that opens (activates) on a rise in temperature. If the  
ECO switch contacts open (activate) due to abnormally high water  
temperatures the control system will lock-out and disable further  
heating element operation. It is important that a qualified service  
agent be contacted to determine the reason for the ECO activation  
before resetting the ECO. Once the reason has been determined  
and corrected the ECO can be reset as follows:  
Water temperature over 125°F (52°C)  
can cause severe burns instantly  
resulting in severe injury or death.  
DANGER  
Children, the elderly and the physically  
or mentally disabled are at highest risk  
for scald injury.  
Feel water before bathing or showering.  
Temperature limiting devices such as  
mixing valves must be installed when  
required by codes and to ensure safe  
temperatures at fixtures.  
When the ECO switch contacts open (activate) the electronic control  
system locks out and displays a Fault message. Voltage to the  
contactor coils and heating elements is terminated to prevent further  
heating operation. Should the ECO activate, the water temperature  
must drop below 120°F/49°C before the control system can be reset.  
Once the water temperature has cooled below this point the power  
supply to the water heater must be turned off and on again to reset  
the control system.  
Water heated to a temperature which will satisfy clothes washing,  
dish washing, and other sanitizing needs can scald and cause  
permanent injury upon contact. Short repeated heating cycles  
caused by small hot water uses can cause temperatures at the  
point of use to exceed the water heater’s temperature setting by  
up to 20°F (11°C).  
Some people are more likely to be permanently injured by hot water  
than others. These include the elderly, children, the infirm and the  
physically/mentally disabled. Figure 1 shows the approximate time-  
to-burn relationship for normal adult skin. If anyone using hot water  
provided by the water heater being installed fits into one of these  
groups or if there is a local code or state law requiring a certain  
water temperature at the point of use, then special precautions  
must be taken.  
In addition to using the lowest possible temperature setting that  
satisfies the demand of the application a Mixing Valve should be  
installed at the water heater (see Figure 2) or at the hot water taps  
to further reduce system water temperature.  
thErMostat Controls  
Mixing valves are available at plumbing supply stores. Consult a  
Qualified Installer or Service Agency. Follow mixing valve manufacturer’s  
instructions for installation of the valves.  
The water heaters covered in this instruction manual are equipped  
with adjustable thermostat controls to control water temperature. Hot  
water temperatures required for automatic dishwasher and laundry  
use can cause scald burns resulting in serious personal injury and/  
or death. The temperature at which injury occurs varies with the  
person’s age and duration of exposure. The slower response time  
of children, the elderly or disabled persons increases the hazards to  
them. Never allow small children to use a hot water tap or draw their  
own bath water. Never leave a child or disabled person unattended in  
a bathtub or shower. The water heater should be located in an area  
where the general public does not have access to set temperatures.  
Time to Produce 2nd & 3rd  
Water Temperature  
Degree Burns on Adult Skin  
180°F (82°C)  
170°F (77°C)  
160°F (71°C)  
150°F (66°C)  
140°F (60°C)  
130°F (54°C)  
120°F (49°C)  
Nearly instantaneous  
Nearly instantaneous  
About 1/2 second  
About 1-1/2 seconds  
Less than 5 seconds  
About 30 seconds  
Setting the water heater temperatures at 120°F will reduce the  
risk of scalds. Some States require settings at specific lower  
temperatures.  
More than 5 minutes  
See Figure 1 which shows the approximate time-to-burn relationship  
for normal adult skin.  
fIGurE 1.  
7
Download from Www.Somanuals.com. All Manuals Search And Download.  
tEMpEraturE rEGulatIon  
HOT WATER  
OUTLET  
temperature from a factory installed immersion temperature  
probe. The “Operating Set Point” is adjusted to control water  
temperature. This is an adjustable user setting in the control  
system’s “Temperatures Menu.” This and all control system  
menus are accessed through the UIM (User Interface Module  
located on the front panel of the water heater.  
12” TO 15”  
(30-38 cm)  
TEMPERED WATER  
OUTLET  
The Operating Set Point is adjustable from 90°F/42°C to  
190°F/88°C. The factory setting is 120°F/49°C. See the Control  
System Operation section of this manual for instructions on how  
to adjust the Operating Set Point and other user settings.  
CHECK  
VALVE  
COLD  
WATER  
INLET  
MIXING  
VALVE  
CHECK  
VALVE  
Set the Operating Set Point at the lowest setting which produces  
an acceptable hot water supply. This will always give the most  
energy efficient operation.  
TO TANK  
INLET  
fIGurE 1.  
tEMpEraturE adjustMEnt  
The water heaters covered in this instruction manual are equipped  
with an electronic control system. The control system senses  
8
Download from Www.Somanuals.com. All Manuals Search And Download.  
Control systEM opEratIon  
appears on the LCD screen above an Operational Button there is no  
function assigned.  
hEatInG ElEMEnt opEratIon  
Progressive Sequencing: Elements are energized and de-energized  
accordingtoadjustable(1to20°F)Differentialsetpointsforeachelement.  
Element Rotation - first element on is rotated with each successive call  
for heat. First On/First Off - the first heating element energized at the  
beginning of a heating cycle is the first element de-energized at the  
end of the heating cycle. Successive heating cycles would progress as  
follows on a model equipped with 3 heating elements:  
thE dEsktop sCrEEn  
The illustration below shows the control system “Desktop Screen.”  
This is the default screen. If there are no active Fault or Alert  
conditions and no user input for approximately 10 minutes the control  
system will return to this screen automatically.  
• First heating cycle: Elements come on [1, 2, 3] and cycle off [1, 2, 3].  
• Second heating cycle: Elements come on [2, 3, 1] and cycle off [2, 3, 1].  
• Third heating cycle: Elements come on: [3, 1, 2] and cycle off [3, 1, 2].  
• Fourth heating cycle: pattern repeats - same as first.  
Model Information: Model information and menu titles are shown in  
the black bar at the top of the Desktop Screen.  
Tank Temperature: Current water temperature as sensed from the  
immersion Temperature Probe.  
Control systEM fEaturEs  
Operating Set Point: Temperature at which the control system will  
maintain tank (water) temperature in the Normal Mode. This line of  
text will read Economy Set Point whenever the control system is  
operating in the Economy Mode.  
advanced diagnostics  
Plain English text and animated icons display detailed operational  
and diagnostic information. LCD screen on the front of the water  
heater displays the Sequence of Operation in real time. Fault or  
Alert messages are displayed when operational problems occur.  
Advanced Service menu displays a list of possible causes for current  
Fault and Alert conditions to aid in servicing.  
Status: The Operating State of the control system is displayed  
beneath the Operating Set Point.  
Economy Mode operation  
Control system automatically lowers the Operating Set Point by a  
programmed value during user defined time periods. Helps reduce  
operating costs during unoccupied or peak demand periods.  
Control systEM naVIGatIon  
TheUIM(UserInterfaceModule)islocatedonthefrontcabinetofthewater  
heater. All operational information and user settings are displayed and  
accessed using the UIM. The UIM includes five snap acting (momentary)  
user input buttons; an Up, Down and 3 Operational Buttons.  
Menu: The left Operational Button is pressed to enter the Main Menu  
where all control system menus are accessed. See Table 3 on page  
10 for a list of control system menus.  
Help: The right Operational Button is pressed to access instructions  
and explanations for user settings, Operating States, Status Icons,  
manufacturer’s web address, technical support phone number and  
service agent contact information.  
Day/Time/Operating Mode: The current time and day are also  
displayed on the Desktop Screen. “Clock Not Set” will be displayed  
until the time clock has been initially set. Day and Time are adjusted  
in the Economy Mode Setup menu. The current Operating Mode,  
either Normal Mode or Economy Mode, is displayed beneath the  
day and time.  
up & down Buttons  
Used to navigate (up and down) and to select (highlight) menu items.  
Also used to adjust or change (increase/decrease, on/off, set time)  
various user settings.  
Discreet Menu Contact Information: From the Desktop Screen  
press and hold down the middle (unmarked) Operational Button for  
30 seconds and then release it. This will launch a discreet menu  
operational Buttons  
The 3 Operational Buttons are multifunctional. Their current function where personalized contact information can be entered. Installing  
is defined by the text that appears directly above each button on contractors and/or service agents can enter their company name  
the LCD screen. The function will change depending on what menu and telephone number. This contact information will be displayed  
is currently displayed or what menu item is selected. When no text with all Fault and Alert messages.  
9
Download from Www.Somanuals.com. All Manuals Search And Download.  
taBlE 1 - status ICons  
ICon  
dEsCrIptIon  
Water temperature in the tank has fallen. Shaded area of the animated thermometer icon will rise and fall in response to  
water temperature in the storage tank as sensed from the immersion Temperature Probe.  
Water temperature in the tank has reached the Operating Set Point. Shaded area of the animated thermometer icon will rise  
and fall in response to water temperature in the storage tank as sensed from the immersion Temperature Probe.  
The control is unable to initiate a heating cycle. This will happen whenever a Fault condition is detected by the control system  
or when either of the two Enable/Disable circuits are open circuits.  
The control system is in Heating Mode and has energized the electromagnetic contactor coils for at least one heating  
element. This animated icon DOES NOT indicate current has been sensed from the heating elements, only that there is a  
call for heat present and the control system has initiated heating element operation.  
The control has detected/declared a Fault Condition. Fault message details can be viewed in the Current Fault menu.  
Heating operation is discontinued (locked out) until the condition that caused the fault is corrected. Power to the water heater  
must be cycled off and on to reset the control system. Note; cycling power will not reset the control system if the condition  
that caused the fault has not been corrected.  
The control has detected/declared an Alert Condition. The water heater will continue to operate during an Alert Condition but  
there is an operational condition that requires the attention of a Qualified Service Agent. Alert message details can be viewed  
in the Current Alert menu.  
taBlE 2 - opEratInG statEs  
statE  
dEsCrIptIon  
The water heater is not in an active heating cycle. This usually indicates the temperature in the tank has reached the  
Operating Set Point and the control system has terminated the heating cycle.  
Standby  
Heating  
Alert  
The control system is in the Heating Mode. At least one heating element has been energized.  
The control system has detected/declared an Alert Condition. The controls system will continue heating operation.  
However, a Qualified Service Agent should be contacted to check/service the water heater.  
The control system has detected/declared a Fault Condition. The control system will discontinue heating operation and  
“lock out.” Power to the water heater must be cycled off and on to reset the control system. Note; cycling power will not  
reset the control system until the condition that caused the fault has been corrected.  
Fault  
10  
Download from Www.Somanuals.com. All Manuals Search And Download.  
taBlE 3 - Control systEM MEnus  
MEnus  
dEsCrIptIon  
Most commonly accessed menu. Operating Set Point, Differential settings, Tank Temperature and Tank Probe  
Offset are located in this menu.  
Temperatures  
Current Operating State/Mode (heating/standby etc) and status (open/closed - on/off - yes/no) of monitored  
water heater functions and components are displayed in this menu.  
Heater Status  
Economy Mode Setup  
Alarm Output Setup  
Display Settings  
Seven day 24 hour time clock with temperature set back capability to reduce operating costs during unoccupied  
or reduced demand periods.  
The control system’s CCB (Central Control Board - see wiring diagrams) features on board SPDT (single pole  
double throw) relay contacts for building EMS (Energy Management System) notification of operational conditions  
such as Fault Conditions and heating mode status. This menu features a list of user definable conditions for  
relay activation.  
Temperature units (°F or °C), appearance (brightness contrast) and backlight delay user adjustable settings are  
located in this menu.  
Elapsed time of operation, total heating cycle time, heating cycle count, heating element(s) cycle count and on  
time along with UIM and CCB software revisions can be viewed in this menu.  
Heater Information  
Current Fault/Alert  
Fault History  
Displays any current Alert or Fault messages.  
Retains 9 event history of Fault/Alert messages with time stamp. The Fault History is useful when dealing with  
intermittent operational problems or when the customer has reset the control system prior to a service agent’s  
arrival.  
Total accumulated number each individual Fault condition has occurred is displayed in this menu. This  
running total of Fault Occurrences can be useful in determining which (if any) operational problems have been  
persistent.  
Fault Occurrence  
Restore Factory Defaults  
Help Menu  
This control system feature allows the user to restore control system user settings to their factory default settings.  
Alarm Output Setup and Display Settings menu items ARE NOT changed when factory defaults are restored.  
Accessible by pressing the corresponding Operational Button from most menus and screen displays. This menu  
provides access to instructions and explanations for user settings, Operating States, Status Icons, manufacturer’s  
web address, technical support phone number and service agent contact information.  
11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
operating sequence  
tEMpEraturEs MEnu  
On a water heater equipped with 3 heating elements, with an  
Operating Set Point of 120°F and all Differential settings at 2°F the  
On/Off sequencing of heating elements would be as follows:  
operating set point  
User adjustable setting 90°F to 190°F range; factory default is  
120°F. When the water temperature sensed by the control system  
from the immersion Temperature Probe reaches the Operating Set  
Point the control system will end the heating cycle. A call for heat  
will be activated again when the water temperature drops below the  
Operating Set Point minus the 1st Differential Setting.  
ELEMENT  
NUMBER  
DIFFERENTIAL  
SETTING  
TURN ON TEMP  
118°F  
TURN OFF TEMP  
120°F  
Element 1  
Element 2  
Element 3  
2°F  
2°F  
2°F  
116°F  
118°F  
Example: Operating Set Point is 120°F, the 1st Differential Setting is  
2°F (factory default). A call for heat will be activated when the sensed  
water temperature drops to 118°F.  
114°F  
116°F  
taBlE 4.  
tank temperature  
Non adjustable information display. Current water temperature as  
sensed by the control system from 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.  
differential settings  
Adjustable user setting(s) 1°F to 20° range; factory default is 2°F.  
The water heaters covered in this manual will have between 1  
and 5 heating elements. There is at least one Differential Setting  
on all models. There will be additional Differential Settings for each  
additional heating element installed.  
Used to calibrate for slight differences in control system temperature  
sensing.Thiscanimprovetheprecisionoftemperaturecontrolinstorage  
tank and at points of use. This feature can also be used to compensate  
for building recirculation loops (hot water returning to storage tank) that  
may cause the heating cycle to terminate prematurely.  
12  
Download from Www.Somanuals.com. All Manuals Search And Download.  
temperature settings  
The Operating Set Point and the Differential Settings are adjusted in the Temperatures Menu. The following instructions explain how to adjust  
these user settings and navigate the control system menus.  
aCtIon  
dIsplay  
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 display  
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  
Temperature Menu.  
If Temperatures is not selected use the Up and Down buttons to select  
this menu item.  
With the Operating Set Point selected (highlighted in black) 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.  
13  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Element # on  
watEr hEatEr status MEnu  
Displays the on/off status of each heating element. Yes = On, No =  
Off.  
This menu displays non adjustable operational information. Use the  
Up & Down Buttons to navigate to the bottom of this menu.  
tank full  
top of Menu  
Displays the status of the optional LWCO (Low Water Cut Off) device.  
Yes = water level is acceptable, No = water level is low.  
alarm Condition  
Displays the status of the user definable Alarm Output function - see  
Alarm Output Setup Menu. Yes = alarm condition has been met, No  
= alarm condition has not been met.  
alarm relay output  
Displays the state of the normally open contacts of the Alarm  
Output relay. This relay (J3 contacts on the CCB - see wiring  
diagrams) is used for building EMS (Energy Management  
System) notification of operational conditions such as Fault  
conditions.  
Bottom of Menu  
EConoMy ModE sEtup MEnu  
This menu contains settings used to establish an “Economy Set  
Point” and “Economy Mode” operating periods. This control system  
feature can help reduce operating costs during unoccupied, low load,  
or peak demand periods.  
desktop screen during Economy Mode  
status  
Displays the current Operating State of the control system. IE:  
Heating, Standby, Fault.  
Elements on #  
Displays the number of heating elements the control system has  
energized.  
ECo Contact  
Economy Mode setup Menu  
Displays the current state of the ECO high temperature limit switch  
contacts.  
Enable / disable 1 & 2  
Displays the current state, open or closed, of the two Enable/Disable  
circuits (J7 socket on the CCB - see wiring diagrams on page 6)  
provided for external supervisory controls such as building EMS  
(Energy Management System). Both of these Enable/Disable circuits  
must be closed to “enable” heating operation. If either Enable/Disable  
circuit is open for any reason heating operation will be “disabled.”  
There is a plug with two jumper wires installed from the factory in the  
CCB J7 socket to enable heating operation when external controls  
are not in use.  
setpoint adjustment  
Service Note: If a supervisory control(s) is used to enable/disable  
heating operation, install field wiring between the J7 socket on  
the CCB and a set of “dry contacts” on the external control per all  
applicable building codes. This is a switching circuit only: DO NOT  
apply any external voltage or connect any load (IE: relay coil) to  
either circuit.  
Adjustable user setting (2°F to 50°F - factory default is  
20°F) the control system uses to calculate the “Economy  
Set Point.” The Economy Set Point = normal Operating Set  
Point minus the programmed Setpoint Adjustment value.  
14  
Download from Www.Somanuals.com. All Manuals Search And Download.  
The Economy Set Point is the water temperature the control daily operating Mode (sun - Mon - tue - wed - thu - fri - sat)  
system maintains during programmed Economy Mode  
time periods. “Economy Set Point” is displayed instead of Seven daily sub menus are listed at the bottom of the Economy  
“Operating Set Point” and “Economy Mode” appears beneath Mode Setup menu. There are 3 Operating Modes in each sub menu;  
the current time on the Desktop Screen during Economy “Normal Operation All Day” - “Economy Mode All Day” and “Normal  
Mode time periods.  
Operation Between.” Only one Operating Mode can be active, the  
factory default is Normal Operation All Day.  
Current time  
Normal Operation All Day: When this operating mode is active the  
Seven Day 24 hr clock. Use this menu item to set the current time normal Operating Set Point is used for the entire day.  
and day of the week. Current day and time are not set from the  
factory. “Clock Not Set” will be displayed on the Desktop until the Economy Mode All Day: When this operating mode is active the  
time/day has been initially set. Note: the time will not self adjust for Economy Set Point is used for the entire day.  
Daylight Savings time.  
Normal Operation Between: When this operating mode is active  
heater In Economy Mode  
there will also be start and stop times to program. The normal  
Operating Set Point is used between the programmed start and stop  
Displays whether the control system is currently operating in times and the Economy Set Point will be in effect during the rest of  
Economy Mode or not. the day. There is one start time and one stop time event per day.  
15  
Download from Www.Somanuals.com. All Manuals Search And Download.  
EConoMy ModE sEttInGs  
setpoint adjustment Value  
aCtIon  
dIsplay  
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 display  
changes as you navigate through the various menus and screens.  
Use the Up/Down buttons to select (highlight in black) the Economy  
Mode Setup menu from the Main Menu. Press the Operational Button  
underneath “SELECT” to enter the Economy Mode Setup menu.  
Use the Up/Down buttons to select (highlight in black) Setpoint  
Adjustment. Press the Operational Button underneath “CHANGE” to  
activate the adjustment mode for the Setpoint Adjustment value.  
Use the Up/Down buttons to change the Setpoint Adjustment to the  
desired value. The Setpoint Adjustment value is adjustable from 2°F to  
50°F. The factory default is 20°F.  
NoticehowthetextabovetheOperationalButtonsonthedisplaychanges  
to “UPDATE” & “CANCEL” when the adjustment mode is activated and  
how the current value is outlined rather than highlighted in black.  
Press the Operational Button underneath “UPDATE” to enter and confirm  
the new value. Pressing the Operational Button underneath “CANCEL”  
would discard the new value and retain the previous value.  
The new Setpoint Adjustment value should now be displayed as the  
current value.  
16  
Download from Www.Somanuals.com. All Manuals Search And Download.  
EConoMy ModE sEttInGs  
time Clock settings  
aCtIon  
dIsplay  
From the Desktop Screen navigate to the Economy Mode Setup menu.  
Use the Up/Down buttons to select (highlight in black) Current Time sub  
menu. Press the Operational Button underneath “CHANGE” to enter the  
Current Time sub menu.  
Use the Up/Down buttons to select the “Weekday” setting.  
Press the Operational Button underneath “CHANGE” to activate the  
adjustment mode for this setting.  
Press the Up/Down buttons to adjust the Weekday setting to the current  
day.  
NoticehowthetextabovetheOperationalButtonsonthedisplaychanges  
to “ACCEPT” & “CANCEL” when the adjustment mode is activated and  
how the current setting is outlined rather than highlighted in black.  
Press the Operational Button underneath “ACCEPT” to enter and confirm  
the new setting. Pressing the Operational Button underneath “CANCEL”  
would discard the new setting and retain the previous setting.  
Use the Up/Down and the CHANGE/ACCEPT Operational Buttons to  
individually selectandchangetheremaining timesettings(Hour, Minutes,  
AM/PM) to the current time in the same way as outlined above.  
When finished making changes press the Operational Button underneath  
“BACK” to confirm all new settings and update the control system. The  
display will automatically return to the Economy Mode Setup menu.  
The new settings should be displayed as the Current Time.  
17  
Download from Www.Somanuals.com. All Manuals Search And Download.  
EConoMy ModE sEttInGs  
daily operating Mode settings  
ACTION  
DISPLAY  
Economy Mode all day:  
From the Economy Mode Setup menu use the Up/Down buttons to  
select (highlight in black) the Daily sub menu for “Sun.” Press the  
Operational Button underneath “CHANGE” to enter this menu.  
Use the Up/Down buttons to select (highlight in black) the “Economy  
Mode All Day” setting.  
Press the Operational Button underneath “SELECT” to change from  
the factory default Normal Operation All Day setting to the Economy  
Mode All Day setting.  
Press the Operational Button underneath “BACK” to confirm the  
new setting and update the control system. You will be returned to  
the Economy Mode Setup menu. The new setting should now be  
displayed for Sun.  
normal operation Between:  
From the Economy Mode Setup menu Use the Up/Down and  
CHANGE buttons to enter the Mon sub menu as described above.  
Use the Up/Down buttons to select (highlight in black) the “Normal  
Operation Between” setting. Press the Operational Button  
underneath “SELECT” to change the operating mode for Monday to  
Normal Operation Between. Note that when this setting is selected  
Start and Stop time user settings appear on the display.  
Use the Up/Down buttons to navigate between the Start and Stop  
time Hour, Minutes and AM/PM settings.  
With each item selected press the Operational Button underneath  
“CHANGE” to activate the adjustment mode for each setting. Use  
the Up/Down buttons to change the value to the desired setting.  
Press the Operational Button underneath “ACCEPT” to enter the  
new setting or “CANCEL” to discard the new setting and retain the  
previous setting.  
Press the Operational Button underneath “BACK” when finished to  
confirm the new settings and update the control system. The display  
will return to the Economy Mode Setup menu with the new settings  
shown for Mon.  
18  
Download from Www.Somanuals.com. All Manuals Search And Download.  
alarm output settings  
alarM output sEtup MEnu  
Changing the user settings in this menu is done using the same  
methods for changing the Operating Set Point.  
Permits user to set the condition (from a list of options) for when  
the CCB’s integral alarm output relay will be energized. Alarm relay  
connections (common, normally open, normally closed) are located on  
the J3 terminal strip on the CCB - see wiring diagrams. Alarm output  
relay contacts are capable of switching 1 amp maximum at 120 VaC.  
Service Note: Adjustable user settings in the Alarm Output Setup  
menu are unaffected by Restore Factory Defaults.  
dIsplay sEttInGs MEnu  
Permits user to set display options for viewing information on the  
UIM’s LCD screen.  
temperature units  
Adjustable user setting that changes temperature units display to  
Celsius °C or Fahrenheit °F.  
Backlight delay  
The alarm relay operates in the background according to the settings  
in this menu and is not capable of disabling water heater operation.  
The alarm relay is used for external notification/verification of  
various operational conditions such as fault conditions and heating  
mode status. This relay can be used with building EMS (Energy  
Management System) and other external supervisory controls.  
Adjustable user setting that determines how long the UIM’s LCD  
backlight remains illuminated after a key has been pressed. Available  
settings are; Always Off, 10, 30 or 60 seconds and Always On.  
Contrast  
output function  
Adjustable user setting to adjust the UIM’s LCD screen contrast  
between text and background.  
Adjustable user setting. Available options for the Alarm Output  
Function setting are:  
display settings  
Heating Mode: Used for heating mode on/off status notification.  
Changing the user settings in this menu is done using the same  
methods for changing the Operating Set Point.  
Enable / Disable Closed: Used for notification and/or verification of  
the enable/disable circuits open/closed status. There are two enable/  
disable circuits available for external supervisory control(s) at the J7  
socket on the CCB - see wiring diagrams on page 6. Enable/disable  
circuit(s) status can be viewed in the Heater Status Menu.  
Service Note: Adjustable user settings in the Display Settings menu  
are unaffected by Restore Factory Defaults.  
hEatEr InforMatIon MEnu  
This menu displays non adjustable operational information.  
top of Menu  
Temp < Heater SP: Used for external notification when current tank  
temperature drops below Operating Set Point.  
Temp < Alarm SP: Used for external notification when current tank  
temperature drops below programmable Alarm SP.  
Fault or Alert: Used for external notification whenever a Fault or  
Alert condition is active.  
Fault: Used for notification whenever a Fault condition is active.  
Disabled: Disables the Alarm Relay Output Function.  
alarm sp  
Adjustable user setting (90°F to 190°F) the control system uses for  
the “Temp < Alarm SP” function described above. This setting has no  
effect with any other Alarm Output functions.  
19  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Bottom of Menu  
messages in chronological order in this menu. The most recent  
will be at the top of the list. A time stamp is displayed below each  
listed Fault and Alert message showing when the Fault or Alert  
condition occurred.  
The Fault History is useful when dealing with intermittent operational  
problems or when the customer has reset the control system prior to  
a service agent’s arrival.  
With a Fault or Alert item selected press the Operational Button  
underneath “VIEW” to display the details for the Fault or Alert  
message. The Fault/Alert message screen displays a brief description  
of the condition, contact information and access to the Advanced  
service information sub menu.  
Elapsed time  
fault history Menu  
Total accumulated time the control system (water heater) has been  
energized.  
total heating time  
Total accumulated time the control system has been in the heating  
mode. IE: any heating elements have been energized.  
Element # Cycles  
Total accumulated count of heating cycles for each heating  
element.  
Element # on time  
Current/history fault Message  
Total accumulated heating on time for each heating element.  
CCB Version  
Software version for Central Control Board.  
uIM Version  
Software version for User Interface Module  
CurrEnt fault / alErt MEnu  
This menu displays non adjustable operational information. With the  
Fault History sub menu selected in Main Menu; press the Operational  
Button underneath “SELECT” to display the current Fault or Alert  
message. If there is not a Fault or Alert condition currently active  
“(none)” is displayed to the right of this menu.  
fault oCCurrEnCE MEnu  
Main Menu - Current fault selected  
Total accumulated number each individual Fault condition has  
occurred is displayed in this menu. This running total of Fault  
Occurrences can be useful in determining which (if any) operational  
problems have been persistent.  
fault occurrence Menu  
fault hIstory MEnu  
This menu displays non adjustable operational information. The  
control system records and stores the last 9 Fault and Alert  
20  
Download from Www.Somanuals.com. All Manuals Search And Download.  
rEstorE faCtory dEfaults MEnu  
This control system menu allows the user to restore most of the control system’s user settings to their factory default  
settings. user settings in the alarm output setup and display settings menus are unaffected by executing restore  
factory defaults.  
restore factory defaults  
aCtIon  
dIsplay  
From the Main Menu use the Up/Down buttons to select (highlight in  
black) the “Restore Factory Defaults” menu.  
Press the Operational Button underneath “SELECT.” The Restore  
Factory Defaults menu will be displayed.  
From the Restore Factory Defaults menu press the Operational Button  
underneath “YES.” The display will show text confirming the factory  
default settings have been restored.  
Press the Operational Button underneath “BACK” to exit the Restore  
Factory Defaults menu.  
21  
Download from Www.Somanuals.com. All Manuals Search And Download.  
trouBlEshootInG ChECklIst  
Before calling for service, check the following points to see if 3. If the water was excessively hot, and is now cold, the ECO  
high limit switch may have activated.  
the cause of trouble can be identified and corrected. Reviewing  
this checklist may eliminate the need of a service call and  
quickly restore hot water service.  
See the Temperature Regulation section of this manual  
for more information on how to reset the ECO high limit  
controls.  
Repeated activation of the ECO high limit switch should be  
investigated by a Qualified Service Agent.  
4. The storage capacity and/or recovery rate of the water heater  
may have been exceeded by a large demand for hot water.  
Large demands require a recovery period to restore water  
temperature.  
5. Cold incoming water temperature will lengthen the time required  
to heat water to the desired temperature.  
If the heater was installed when incoming water temperature was  
warm, colder water creates the effect of less hot water.  
BE SURE TO TURN OFF THE ELECTRICITY (ELECTRICAL  
DISCONNECT SWITCH) WHEN CHECKING EQUIPMENT.  
7. Sediment or lime scale may be affecting water heater  
operation.  
not EnouGh or no hot watEr  
watEr Is too hot  
1. Be certain the electrical disconnect switch serving the water  
heater is in the ON position. The pilot toggle switch on the  
cabinet should be ON.  
Refer to the TEMPERATURE REGULATION section of this  
manual.  
In some areas water heater electrical service may be limited  
by the power company. If the heater operates on a controlled  
circuit, heater recovery may be affected.  
watEr hEatEr MakEs stranGE sounds  
1. Sediment or lime scale accumulations on the elements causes  
sizzling and hissing noises when the heater is operating.  
The optional manual override switches on the cabinet front may  
be turned off, de-energizing the elements.  
The sounds are normal, however, the tank bottom and elements  
should be cleaned.  
2. Check the fuses.  
2. Some of the electrical components of the water heater make  
sounds which are normal ie. contactors will “Click” or snap  
as the heater starts and stops.  
The electrical disconnect switch usually contains fuses.  
The water heater has fuses located behind the cabinet front door.  
22  
Download from Www.Somanuals.com. All Manuals Search And Download.  
notEs  
Download from Www.Somanuals.com. All Manuals Search And Download.  
500 Tennessee Waltz Parkway, Ashland City, TN 37015  
Phone: 800-365-0024 • Parts: 800-433-2545 • Fax: 800-644-9306  
Copyright © 2010 A.O. Smith Corporation, All rights reserved.  
Download from Www.Somanuals.com. All Manuals Search And Download.  

Shark Vacuum Cleaner EP035 User Manual
Silvercrest Oven SGB 1380 A1 User Manual
Sony Cell Phone CMD J26 User Manual
Sony DVD Player DVP NC875V User Manual
Sony Microphone WRT 807B User Manual
Sony Tablet 20 SVJ202 User Manual
Sony Universal Remote RM PP505 User Manual
StarDot Technologies Digital Camera net camera User Manual
Sunbeam Outdoor Ceiling Fan FA7500 User Manual
Sylvania TV VCR Combo 6313CE User Manual