State SEH-200-10000 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
SAFE INSTALLATION, USE AND SERVICE
Your safety and the safety of others is extremely important in the installation, use, and servicing of this water heater.
Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and
others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual. It is very important
that the meaning of each safety message is understood by you and others who install, use, or service this water heater.
This is the safety alert symbol. It is used to alert
you to potential personal injury hazards. Obey all
safety messages that follow this symbol to avoid
possible injury or death.
DANGER indicates an imminently hazardous
DANGER
WARNING
CAUTION
situation which, if not avoided, will result in
death or injury.
WARNING indicates a potentially hazardous
situation which, if not avoided, could result
in death or injury.
CAUTION indicates a potentially hazardous
situation which, if not avoided, could result
in minor or moderate injury.
CAUTION used without the safety alert
CAUTION
All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety
message, and how to avoid the risk of injury.
The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of
substances known to the State of California to cause cancer, birth defects, or other reproductive harm, and requires
businesses to warn of potential exposure to such substances.
This product contains a chemical known to the State of California to cause cancer, birth defects, or other reproductive
harm. This appliance can cause low level exposure to some of the substances listed.
• QualiedInstallerorServiceAgency:
Installation and service of this water heater requires ability equivalent to that of a Qualied Agency (as dened by ANSI below) in
the eld involved. Installation skills such as plumbing and electrical supply are required in addition to electrical testing skills when
performing service.
symbol indicates a potentially hazardous
situation which, if not avoided, could result
in property damage.
IMPORTANT DEFINITIONS
• ANSIZ223.12006Sec.3.3.83:
“Qualied Agency” - “Any individual, rm, corporation or company that either in person or through a representative is engaged in and is
responsible for (a) the installation, testing or replacement of gas piping or (b) the connection, installation, testing, repair or servicing of
appliances and equipment; that is experienced in such work; that is familiar with all precautions required; and that has complied with all
the requirements of the authority having jurisdiction.”
2
GENERAL SAFETY INFORMATION
PRECAUTIONS
DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER
WATER. Immediately call a qualied 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 qualied service agency.
1. External re.
2. Damage.
3. Firing without water.
GROUNDING INSTRUCTIONS
This water heater must be grounded in accordance with the National
Electrical Code and/or local codes. These must be followed in all cases.
Failure to ground this water heater properly may also cause erratic
control system operation on ELECTRONIC CONTROL models.
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.
HYDROGEN GAS (FLAMMABLE)
Hydrogen gas can be produced in a hot water system served by this heater
that has not been used for a long period of time (generally two weeks or
more). Hydrogen gas is extremely ammable. 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 ow. THERE SHOULD BE NO SMOKING OR
OPEN FLAME NEAR THE FAUCET AT THE TIME IT IS OPEN.
3
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
INTRODUCTION
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
Thank You for purchasing this water heater. Properly installed and
maintained, it should give you years of trouble free service.
Abbreviations Found In This Instruction Manual:
• ANSI - American National Standards Institute
• ASME - American Society of Mechanical Engineers
• NEC - National Electrical Code
• NFPA - National Fire Protection Association
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 ru les, the wate r heater may not oper ate safely.
It could cause DEATH, SERIOUS BODILY INJURY AND/
OR PROPE RTY DAMAGE.
Th is manu al cont ai ns in st ructi ons f or the in st all at ion,
ope r a tio n , an d ma i n ten a n ce o f th e wa t er h eate r. It
also co ntains wa rnings throughou t the manu al that you
must read and be aware of. All warnings and all instructions
are e s sent i a l to t he pr o p er op e rati o n of t h e wa t e r
heater and your safety. READ THE ENTIRE MANUAL
BEFORE ATTEMPTIN G TO INSTAL L O R OPERATE THE
WATER HEATER.
Gen era l outl i ne dia gra ms are in th i s m anu a l. Th e se
diagrams will serve to provide the installer with a reference
for basic installation of this product. IT IS NECESSARY
TH AT A LL THE ELECTRICAL WIR IN G BE I NS TAL LE D
AND CONNECTED AS SHOWN IN THE DIAGRAMS.
Be sur e to tu rn off po w er whe n wo rki ng o n or ne ar
the electrical system of the water heater. Never touch
electrica l c omponents wi th we t 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.
2. T he in st all at ion must con for m with th ese instru ction s
and t he lo cal c od e authorit y having jurisd ic tion and t he
requirements of the power company. In the absence of
code requiremen ts, foll ow NFPA-70 (curre nt edition). The
National Electrical Code may be ordered from: National
Fire Protection Association, 1 Batterymarch Park, Quincy,
MA 02269.
3. If a fter readi ng th is manual you have any que stions or do
not underst and an y portion of the i nstructi ons, call the toll
free num be r on th e back co ver for further a ssistance .
4. Installation and service of this water heater requires ability
equivalent to that of a lic en sed trade sm an or quali fi ed
age ncy (pag e 2) i n t he fie ld in v ol v ed . Plum bin g a nd
electrical work are required.
5. Massachusetts Code requires this water heater to be
in stall ed in a cc ordan ce with M assac hu setts 248 -CMR
2.00: State Plumbing Code and 248-CMR 5.00.
4
ELECTRICAL DATA
GENERAL
Check the water heater model and rating plate information against
the characteristics of the branch circuit electrical supply. Do not
connect the heater to an improper source of electricity.
Voltage applied to the water heater should not vary more than +5% to
-10% of the model and rating plate marking for satisfactory operation.
Do NOT energize the branch circuit for any reason before the water
heater tank is lled with water. Doing so may cause the heating
elements to fail.
The installation must conform to these instructions and the local
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.
BRANCH CIRCUIT
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.
HEATER CIRCUITS
The water heater’s electrical components are pictured and identied
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:
Control Circuit: Power supply for the electromagnetic
contactor co ils. 12 0V powe r is supplied to the contac tor coi ls
by the CCB (Central Control Board) see wiring diagrams in
this manual.
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.
CONTROL CIRCUITS
The water heater is equipped with an electronic control system. The
system includes a CCB (Central Control Board) circuit board, an
immersion temperature probe with ECO for temperature sensing and
limiting, a UIM (User Interface Module) for user interface & information
display and element current sensors for monitoring the power circuits.
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
operates on 120V supplied by a larger 100VA transformer.
Sequence of Operation
1. When the control is powered, the UIM should display model
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.
3. After all safety checks are veried the CCB will energize the
contactor coil(s). On models with more than one heating
element the upper most heating elements are energized rst.
Successive heating elements are energized according to
programmed differential setpoints for each heating element.
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.
POWER CIRCUIT
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.
5
WIRING DIAGRAMSWIRING DIAGRAMS
300-600V/3
BLK
BLK WHT
WHT
C5 C4 C3 C2 C1
C5C4C3C2C1
N
GRN
GRN
BLK
BLK
X-FMR
ECO
TEMP
120V
BLK
BLU
RED
RED
RED
RED
SDI
24V
X-FMR
PRIMARY
FUSES
X-FMR
12 0V SEC
SEC.
FUSE
PILOT
SWITCH
BLK
BLK
JUMPER
TO DISPLAY
LWCO
54321
FUSES
CNTCTR(S)
ELEMENT ORDER = E1 THROUGH E10
STD. WIRING
OPT’L WIRING
OR IF SO EQUIPPED
DIAGRAM 1. LARGE COMMERCIAL WIRE DIAGRAM 208-240V / 3PH
DIAGRAM 2. LARGE COMMERCIAL WIRE DIAGRAM 300-600V/3PH
6
DANGER
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
Children, the elderly and the physically
or mentally disabled are at highest risk
for scald injury.
Feel water before bathing or showering.
Te mperature limiting devices such as
mixing valves must be installed when
required by codes and to ensure safe
temperatures at fixtures.
Water Te mperature
Time to Produce 2nd & 3rd
Degree Burns on Adult Skin
180°F (82°C) Nearly instantaneous
170°F (77°C) Nearly instantaneous
160°F (71°C) About 1/2 second
150°F (66°C) About 1-1/2 seconds
140°F (60°C) Less than 5 seconds
130°F (54°C) About 30 seconds
120°F (49°C) More than 5 minutes
TEMPERATURE REGULATION
HIGH TEMPERATURE LIMIT CONTROLS (ECO)
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 qualied 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:
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.
MIXING VALVES
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.
THERMOSTAT CONTROLS
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.
Setting the water heater temperatures at 120°F will reduce the
risk of scalds. Some States require settings at specic lower
temperatures.
See Figure 1 which shows the approximate time-to-burn relationship
for normal adult skin.
In addition to using the lowest possible temperature setting that
satises 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.
Mixing valves are available at plumbing supply stores. Consult a
Qualied Installer or Service Agency. Follow mixing valve manufacturer’s
instructions for installation of the valves.
FIGURE 1.
7
HOT WATER
OUTLET
TO TANK
INLET
CHECK
VALV E
MIXING
VALV E
COLD
WATER
INLET
TEMPERED WATER
OUTLET
12” TO 15”
(30-38 cm)
CHECK
VALV E
FIGURE 1.
TEMPERATURE ADJUSTMENT
TEMPERATURE REGULATION
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.
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 sec tion of this manual for instructions on how
to adjust the Operating Set Point and other user settings.
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.
The water heaters covered in this instruction manual are equipped
with an electronic control system. The control system senses
8
Loading...