instruction manual
CommerCial gas water heaters
models
sBl95 199ne
sBl85 275ne(a)
sBl85 390ne(a)
ultra low nox series 100
installation - operation - serViCe
500 Tennessee Waltz Parkway
Ashland City, TN 37015
- maintenanCe - limited warranty
Complies with sCaQmd low nox rule 1146.2
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
Do not try to light any appliance.
•
Do not touch any electrical switch; do
not use any phone in your building.
•
Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
•
If you cannot reach your gas supplier,
call the fire department.
•
Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the
water heater.
Thank you for buying this energy efficient water heater.
We appreciate your confidence in our products.
plaCe these instruCtions adjaCent to heater and notify owner to keep for future referenCe.
PRINTED 0512
323368-000
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safe installation, use and serViCe
The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others.
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 situation which, if not avoided,
will result in injury or death.
DANGER
WARNING indicates a potentially hazardous
situation which, if not avoided, could result
in injury or death.
WARNING
CAUTION indicates a potentially hazardous
situation which, if not avoided, could result in
minor or moderate injury.
CAUTION
CAUTION used without the safety alert
symbol indicates a potentially hazardous
situation which, if not avoided, could result in
CAUTION
property damage.
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 in the Act.
approVals
3
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general safety information
Fire or Explosion Hazard
Fire Hazard
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
For continued protection against
risk of fire:
Do not install water heater on
carpeted floor.
Avoid all ignition sources if you smell gas.
Do not expose water heater controls to excessive gas
pressure.
Do not operate water heater if
flood damaged.
Use only the gas shown on the water heater rating label.
Maintain required clearances to combustibles.
Keep ignition sources away from faucets after extended
periods of non-use.
Fire and Explosion Hazard
Use joint compound or Teflon tape
compatible with propane gas.
Read instruction manual before
installing, using or servicing
water heater.
Leak test before placing the
water heater in operation.
Disconnect gas piping and main
gas shutoff valve before leak
testing.
Install sediment trap in
accordance with NFPA 54.
Fire and Explosion Hazard
Do not use water heater with any gas
other than the gas shown on the rating
label.
Excessive gas pressure to gas valve can
cause serious injury or death.
Turn off gas lines during installation.
Contact a qualified installer or service
agency for installation and service.
CAUTION
Property Damage Hazard
All water heaters eventually leak.
•
Jumping out control circuits or components can
result in property damage, personal injury or death.
Do not install without adequate drainage.
•
Service should only be performed by a qualified service
agent using proper test equipment.
•
Altering the water heater controls and/or wiring in any way
could result in permanent damage to the controls or water
heater and is not covered under the limited warranty.
•
Electrical Shock Hazard
Altering the water heater controls and/or wiring in any way
Turn off power to the water heater
before performing any service.
•
•
could result in altering the ignition sequence allowing gas to
flow to the main burner before the hot surface igniter is at
ignition temperature causing delayed ignition which can
cause a fire or explosion.
Label all wires prior to disconnecting
•
when performing service. Wiring errors
can cause improper and dangerous
operation.
Any bypass or alteration of the water
heater controls and/or wiring will result
in voiding the appliance warranty.
Verify proper operation after servicing.
•
•
Failure to follow these instructions can
result in personal injury or death.
4
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general safety information
Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Explosion Hazard
Overheated water can cause
water tank explosion.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
Properly sized temperature and
pressure relief valve must be
installed in the opening provided.
This manual must remain with the
water heater.
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
CAUTION
Improper installation, use and service may result
in property damage.
Children, the elderly and the
physically or mentally disabled are at
highest risk for scald injury.
Do not operate water heater if flood damaged.
Inspect anode rods regularly, replace if damaged.
•
•
•
•
•
Feel water before bathing or
showering.
Install in location with drainage.
Fill tank with water before operation.
Properly sized thermal expansion tanks are required on all
closed water systems.
Temperature limiting devices such as
mixing valves must be installed
when required by codes and to
ensure safe temperatures at fixtures.
Refer to this manual for installation and service.
Verify the power to the water heater is turned off before performing any service procedures.
general safety information
preCautions
hydrogen gas flammaBle
DO NOT uSe THIS WATer HeATer IFANy PArT HAS beeN
uNDer WATer. Immediately call a qualified service agency
to inspect the water heater and to make a determination on
what steps should be taken next.
Explosion Hazard
If the unit is exposed to the following, do not operate heater
until all corrective steps have been made by a qualified
service agency.
Flammable hydrogen gases
may be present.
1. external fire.
2. Damage.
Keep all ignition sources away
from faucet when turning on
hot water.
3. Firing without water.
Hydrogen gas can be produced in a hot water system served
by this water heater 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 a hot water faucet served by this water
heater be opened for several minutes 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.
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.
This water heater must be connected to a grounded 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,
5
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introduCtion
Thank you for purchasing this water heater. Properly installed below) in the field involved. Installation skills such as plumbing,
and maintained, it should give you years of trouble free service.
air supply, venting, gas supply and electrical supply are required
in addition to electrical testing skills when performing service.
aBBreViations used
ansi Z223.1 2012 sec. 3.3.85: “qualified Agency” - “Any
individual, firm, corporation or company that either in person or
through a representative is engaged in and is responsible for (1)
the installation, testing or replacement of gas piping or (2) 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.”
Abbreviations found in this Instruction Manual include :
• ANSI - American National Standards Institute
• ASMe - American Society of Mechanical engineers
• AHrI - Air-Conditioning, Heating, and refrigeration Institute
• NeC - National electrical Code
• NFPA - National Fire Protection Association
• ul - underwriters laboratory
• CSA - Canadian Standards Association
If you are not qualified (as defined by ANSI above) and licensed
or certified as required by the authority having jurisdiction
to perform a given task do not attempt to perform any of the
procedures described in this manual. If you do not understand
the instructions given in this manual do not attempt to perform
any procedures outlined in this manual.
QualifiCations
Qualified Installer or Service Agency
Installation and service of this water heater requires ability
equivalent to that of a qualified Agency (as defined by ANSI
6
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features and Components
Controls
RESET
BUTTON
CONTROL BOX
ON/OFF SWITCH
VARIABLE
FREQUENCY
DRIVE
LED
LIGHTS
FUSE
DIGITAL
THERMOSTAT
digital thermostat
I/O MODULE
LOW SPEED
figure 3.
I/O MODULE
HIGH SPEED
eleCtroniC ignition Control
BLOCKED
INLET SWITCH
each heater is equipped with an ignition control. The solid state
ignition control (Figure 4), ignites the burner by utilizing a spark
igniter. The spark igniter shuts off during the heating cycle and the
burner flame is sensed through a remote flame sensor.
BLOCKED
FLUE SWITCH
IGNITION
CONTROL
BLOWER
PROVER
SWITCH
The ignition control will try to ignite the burner three times before
lockout. The control waits 15 minutes before trying again to ignite the
burner. This is a continuous cycle.
figure 1.
Variable frequency drive (Vfd)
The VFD controls the speed of the combustion blower. The VFD runs
the blower at low speed during the ignition trial period and adjusts to
high speed after ignition.
i/o module (low and high speed) - the I/O modules switch the
VFD from low speed to high speed blower operation.
Blocked inlet switch - the blocked inlet switch stops burner
operation if the blower air intake becomes blocked.
Blocked flue switch - the blocked flue switch stops burner
operation if the exhaust outlet becomes blocked.
Blower prover switch - the blower prover switch stops the burner
ignition sequence if the blower does not operate.
ignition Control
the hydroCannon (self-Cleaning system)
figure 4.
These units include The Hydrocannon (Self-Cleaning System) installed
in the front water inlet, see Figure 2. The Hydrocannon inlet tube can Blower/Burner assemBly
only be used in the front water inlet connection. Do not install the
Hydrocannon inlet tube in either the top or back inlet water connection.
The Hydrocannon must be oriented correctly for proper function. There
is a marked range on the pipe nipple portion of the Hydrocannon, that
must be aligned with the top of the inlet spud. A label above the jacket
hole has an arrow that will point to the marked portion of the pipe nipple
if the orientation is correct. If the arrow does not point within the marked
range on the pipe nipple, adjust the pipe nipple to correct.Apipe union is
supplied with the Hydrocannon to reduce the probability of misaligning
the Hydrocannon accidentally while tightening the connection to the
inlet water supply line. Improper orientation of the Hydrocannon can
cause poor performance of the heater and can significantly reduce
outlet water temperatures during heavy draws.
note: the hydrocannon may have 1, 3 or 7 cross tubes.
figure 2.
figure 5.
high limit switCh
spark igniter
The digital thermostat (Figure 3) contains the high limit (energy
cutout) switch. The high limit switch interrupts burner gas flow should
the water temperature reach 203°F (95°C).
The ignition control energizes the Spark Igniter to ignite the burner.
intake air screen
The intake air screen is attached to the inlet end of the combustion
blower. Inspect the intake air screen every six months. The intake air
screen should be cleaned of any buildup of debris or foreign material.
In the event of high limit switch operation, the water heater cannot be
restarted unless the water temperature is reduced to approximately
120°F (49°C). The high limit reset button on the front of the control
then needs to be depressed.
flame sensor
The control system monitors the flame sensor to confirm that flame is
present at the burner. If a flame is not verified during the ignition trial
period (4 seconds) the control system will immediately de-energize
the 24 VAC Gas Valve as indicated on the Sequence of Operation
Flow Chart (Figure 24).
Continued manual resetting of high limit control, preceded by higher than
usual water temperature is evidence of high limit switch operation.
Contact your dealer or service agent if continued high limit switch
operation occurs.
7
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installation Considerations
rough in dimensions
I
TOP OUTLET
1 1/2" NPT
TOP INLET
1 1/2" NPT
F
K
1 1/2"
NPT
C
A
M
H
D
L
G
B
E
TOP VIEW
J
BACK VIEW
FRONT VIEW
figure 6.
taBle 1. rough-in-dimensions
sBl95 199ne
sBl85 275ne(a)
sBl85 390ne(a)
model dim.
inches
76
cm
inches
76
cm
inches
76
cm
a
B
C
D
E
F
193.0
29.8
193.0
29.8
193.0
29.8
11 3/4
78 1/4
65 3/4
25 3/4
21
11 3/4
78 1/4
65 3/4
25 3/4
21
11 3/4
78 1/4
65 3/4
25 3/4
21
198.8
167.0
65.4
198.8
167.0
65.4
198.8
167.0
65.4
53.3
53.3
53.3
G
3/4 NPT
66 1/4
6
3/4 NPT
66 1/4
6
3/4 NPT
66 1/4
6
H
168.3
15.2
70.5
168.3
15.2
70.5
168.3
15.2
70.5
I
J
27 3/4
1 1/2 NPT
1 1/2 NPT
41
27 3/4
1 1/2 NPT
1 1/2 NPT
41
27 3/4
1 1/2 NPT
1 1/2 NPT
41
K
l
m
104
358 Kg.
-
104
104
Approx. Shipping Weight STD
Approx. Shipping Weight ASMe
790 lbs.
-
850 lbs.
900 lbs.
386 Kg.
408 Kg.
850 lbs.
900 lbs.
386 Kg.
408 Kg.
taBle 2. reCoVery CapaCities, Based on 82% effiCienCy
u. s. gallons/hr. and liters/hr. at temperature rise indiCated
input input u.s.
liters eff. % deg. f
36
20
40
22
50
28
54
30
60
33
70
39
72
40
80
44
90
50
100
56
108
60
110
61
120
67
126
70
130
72
140
78
Btuh
kw gal.
deg. C
199000
93
58
85
82
82
82
GPH
lPH
GPH
lPH
GPH
lPH
545
491
393
364
327
280
273
245
218
826
301
196
743
271
182
688
251
178
676
247
934
350
164
619
226
856
321
156
590
215
815
305
151
572
209
790
296
140
531
194
734
275
Sbl95 199Ne
Sbl85 275Ne(A)
Sbl85 390Ne(A)
352
322
322
2064 1858 1486 1376 1239 1062 1032 929
754 678 543 502 452 388 377 339
2853 2567 2054 1902 1712 1467 1426 1284 1141 1027 951
1069 962 769 712 641 550 534 481 427 385 356
275000
81
390000
85
114
4046 3641 2913 2697 2427 2081 2023 1820 1618 1456 1349 1324 1214 1156 1120 1040
taBle 3. gas and eleCtriCal CharaCteristiCs
gas supply pressure
model
gas type
Volts / hz
amperes
minimum
3.5" W.C. (0.87 kPa)
maximum
All Models
Natural
14" W.C. (3.48 kPa)
120/60
<5
8
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the water heater must be placed on a metal or wood panel
extending beyond the full width and depth by at least 3 inches
in any direction. If the heater is installed in a carpeted alcove,
the entire floor shall be covered by the panel. Also, see the
DrAINING requirements in MAINTeNANCe Section.
loCating the water heater
CAUTION
Property Damage Hazard
THe HeATer SHAll be lOCATeD Or PrOTeCTeD SO IT
IS NOT SubJeCT TO PHySICAl DAMAGe by A MOVING
VeHICle.
All water heaters eventually leak.
•
FlAMMAble ITeMS, PreSSurIZeD CONTAINerS Or ANy
OTHer POTeNTIAl FIre HAZArDOuS ArTICleS MuST
NeVer be PlACeD ON Or ADJACeNT TO THe HeATer.
OPeN CONTAINerS Or FlAMMAble MATerIAl SHOulD
NOT be STOreD Or uSeD IN THe SAMe rOOM WITH THe
HeATer.
Do not install without adequate drainage.
•
When installing the heater, consideration must be given to
proper location. location selected should be as close to the
stack or chimney as practicable, with adequate air supply and as
centralized with the piping system as possible.
THe HeATer MuST NOT be lOCATeD IN AN AreA WHere
IT WIll be SubJeCT TO FreeZING.
lOCATe IT NeAr A FlOOr DrAIN. THe HeATer SHOulD
be lOCATeD IN AN AreA WHere leAKAGe FrOM
HeATer Or CONNeCTIONS WIll NOT reSulT IN DAMAGe
TO ADJACeNT AreA Or TO lOWer FlOOrS OF THe
STruCTure.
Fire or Explosion Hazard
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
WHeN SuCH lOCATIONS CANNOTbeAVOIDeD,ASuITAble
DrAIN PAN SHOulD be INSTAlleD uNDer HeATer. Such
pans should be fabricated with sides at least 2” deep, with length
and width at least 2” greater than diameter of heater and must
be piped to an adequate drain. Pan must not restrict combustion
air flow.
Avoid all ignition sources if you smell gas.
Do not expose water heater controls to excessive gas
pressure.
Use only the gas shown on the water heater rating label.
Maintain required clearances to combustibles.
ClearanCes
Keep ignition sources away from faucets after extended
periods of non-use.
This water heater is approved for installation on combustible
flooring in an alcove with minimum clearance from combustion
construction as indicated in Figure 7 and Table 4.
Read instruction manual before
installing, using or servicing
water heater.
In all installations the minimum combustible clearances from
vent piping shall be 6” (15.2 cm). Vent piping passing through a
combustible wall or ceiling must be a continuous run (no joints)
and retain 6” (15.2 cm) clearance unless an approved reducing
thimble is used.
THere IS A rISK IN uSING Fuel burNING APPlIANCeS
SuCH AS GAS WATer HeATerS IN rOOMS, GArAGeS Or
OTHer AreAS WHere GASOlINe, OTHer FlAMMAble
lIquIDS Or eNGINe DrIVeN equIPMeNT Or VeHICleS
Are STOreD, OPerATeD Or rePAIreD. FlAMMAble
VAPOrS Are HeAVy AND TrAVel AlONG THe FlOOr
AND MAy be IGNITeD by THe HeATer’S IGNITer Or MAIN
burNer FlAMeS CAuSING FIre Or eXPlOSION. SOMe
lOCAl CODeS PerMIT OPerATION OF GAS APPlIANCeS
IN SuCH AreAS IF THey Are INSTAlleD 18” Or MOre
AbOVe THe FlOOr. THIS MAy reDuCe THe rISK IF
lOCATION IN SuCH AN AreA CANNOT be AVOIDeD.
A service clearance of at least 24” (61 cm) should be maintained
from serviceable parts.
The units are approved for installation with side, rear and ceiling
clearances as indicated below:
taBle 4. minimum ClearanCes to ComBustiBle or
non-ComBustiBle ConstruCtion
Model
Sbl95
199NE
"A" right Side "b" left Side
"C" back
0"
0 cm
0"
"D" Ceiling
12"
30.5 cm
12"
0"
0 cm
0"
0"
0 cm
0"
Sbl85
275Ne(A)
0 cm
0"
0 cm
0"
0 cm
0"
30.5 cm
12"
Sbl85
DO NOT INSTAll THIS WATer HeATer DIreCTly ON A
CArPeTeD FlOOr. A FIre HAZArD MAy reSulT. Instead
390Ne(A)
0 cm
0 cm
0 cm
30.5 cm
9
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insulation Blanket
Breathing Hazard - Carbon Monoxide Gas
Do not obstruct water heater air intake
with insulating blanket.
Gas and carbon monoxide detectors
are available.
Install water heater in accordance with
the instruction manual.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Insulation blankets are available to the general public for external
use on gas water heaters but are not necessary with these
products. The purpose of an insulation blanket is to reduce the
standby heat loss encountered with storage tank heaters. The
water heaters covered by this manual meet or exceed the energy
Policy Act standards with respect to insulation and standby heat
loss requirements, making an insulation blanket unnecessary.
Should you choose to apply an insulation blanket to this
heater, you should follow these instructions. See the Features
and Components section of this manual for identification of
components mentioned below. Failure to follow these instructions
can restrict the air flow required for proper combustion, potentially
resulting in fire, asphyxiation, serious personal injury or death.
figure 7.
•
do not apply insulation to the front of the combustion
chamber flange plate to insure that the spark igniter, flame
sensor, and sightglass remain uncovered.
nsf leg kit
•
•
•
•
•
do not cover the gas valve or the Temperature-Pressure
relief Valve.
do not apply insulation within 5” (13 cm) of the blower, to
insure the safe operation of the blower assembly.
do not apply insulation on the control box that encloses
the thermostat, ignition control, and variable frequency drive.
do not cover the instruction manual. Keep it on the side of
the water heater or nearby for future reference.
do obtain new warning and instruction labels from the
manufacturer for placement on the blanket directly over the
existing labels.
•
do inspect the insulation blanket frequently to make certain
it does not sag, thereby obstructing combustion air flow.
hard water
Where hard water conditions exist, water softening or the
threshold type of water treatment is recommended. This will
protect the dishwashers, coffee urns, water heaters, water piping
and other equipment.
figure 8.
The NSF leg Kit (part number 9008214005) is needed only for
applications that must conform to NSF/ANSI Standard 5. The
installed height of the water heater will increase by 3" (7.6 cm) when
the leg kit is installed. Follow these steps to install the leg Kit. use
caution to prevent damage to the unit when installing the leg Kit
See the Maintenance Section in this manual for sediment and
lime scale removal procedures.
CirCulation pumps
A circulating pump is used when a system requires a circulating
loop or there is a storage tank used in conjunction with the water
heater. See Water Piping Diagrams in this manual for installation
location of circulating pumps.
1. lift, tilt or lay the unit on its side to access the bottom of the legs.
2. Position the extension under leg aligning the holes in the leg
extension with the holes in the leg. Assemble the bolt, bevel
washers, flat washers, and nut through the aligned holes in
the leg and leg extension as shown in Figure 8.
manual for electrical hookup information. Install in accordance
with the current edition of the National electrical Code, NFPA 70
or the Canadian electrical Code, CSA C22.1.
3. Once in place, tighten the nut and bolt assembly. Torque to 70
ft.lbs (9.67 kgf-m).
4. Insure that all four nut and bolt assemblies are torqued to the
All-bronze or stainless steel circulating pumps are recommended
for use with commercial water heaters.
specified value before placing the unit on the floor.
10
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Some circulating pumps are manufactured with sealed bearings
and do not require further lubrication. Some circulating pumps
must be periodically oiled. refer to the pump manufacturer’s
instructions for lubrication requirements.
high altitude installations
CIRCULATING PUMP WIRING DIAGRAM
STORAGE TANK OR BUILDING RECIRCULATION
Fire and Explosion Hazard
Under no circumstances should the
input exceed the rate shown on the
water heater’s rating label.
FIELD SUPPLIED TEMPERATURE CONTROL
INSTALLED IN THE STORAGE TANK
OR CIRCULATING LOOP RETURN LINE
NOTE: USE SEPARATE 120 VAC POWER
SUPPLY FOR PUMP CIRCUIT. DO NOT
SHARE POWER WITH APPLIANCE AS THIS
MAY CAUSE ELECTRICAL LINE NOISE AND
LEAD TO ERRATIC CONTROL SYSTEM
Overfiring could result in fire or
explosion.
OPERATION.
L1 HOT
Gas and carbon monoxide detectors are
available.
120 VAC
POWER
CIRC
PUMP
MOTOR
L2 NEUTRAL
Breathing Hazard - Carbon Monoxide Gas
CIRCULATING PUMP WIRING DIAGRAM
DISHWASHER LOOP WITH TOGGLE SWITCH
Under no circumstances should
the input exceed the rate shown
on the water heater’s rating label.
DISHWASHER
TOGGLE
FIELD SUPPLIED TEMPERATURE
CONTROL INSTALLED IN THE
SWITCH
CIRCULATING LOOP RETURN LINE
NOTE: USE SEPARATE 120 VAC POWER
Overfiring could result in damage to
the water heater and sooting.
SUPPLY FOR PUMP CIRCUIT. DO NOT
SHARE POWER WITH APPLIANCE AS THIS
MAY CAUSE ELECTRICAL LINE NOISE AND
LEAD TO ERRATIC CONTROL SYSTEM
OPERATION.
Gas and carbon monoxide detectors
are available.
L1 HOT
120 VAC
POWER
CIRC
PUMP
MOTOR
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
L2 NEUTRAL
The water heaters covered by this manual are certified for use
without modification for altitudes up to 2,000 feet (610 m). Do not
install these water heater models above 2,000 feet (610 m) elevation.
figure 9.
11
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installation reQuirements
4. When installing multiple water heaters in the same gas
gas supply systems
supply system it is recommended that individual positive
lock-up gas pressure regulators be installed at each unit.
low pressure building gas supply systems are defined as those
systems that cannot under any circumstances exceed 14” W.C.
(3.49 kPa) (1/2 PSI Gauge). These systems do not require
pressure regulation. Measurements should be taken to insure
that gas pressures are stable and fall within the requirements
stated on the water heater rating plate. readings should be
taken with all gas burning equipment off (static pressure) and
with all gas burning equipment running at maximum rate (dynamic
pressure). The gas supply pressure must be stable within 1.5”
W.C. (0.37 kPa) from static to dynamic pressure to provide good
performance. Pressure drops that exceed 1.5” W.C. (0.37 kPa)
may cause rough starting, noisy combustion or nuisance outages.
Increases or spikes in static pressure during off cycles may
cause failure to ignite or in severe cases damage to appliance
gas valves. If your low pressure system does NOT meet these
requirements, the installer is responsible for the corrections.
power supply
The water heaters covered in this manual require a 120 VAC,
1Ø (single phase), 60Hz, 15 amp power supply and must also
be electrically grounded in accordance with local codes or, in the
absence of local codes, with the National electrical Code, ANSI/
NFPA 70 or the Canadian electrical Code, CSA C22.1.
water temperature Control and mixing ValVes
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.
High Pressure building supply systems use pressures that exceed
14” W.C. (3.49 kPa) (1/2 PSI Gauge). These systems must use
field supplied regulators to lower the gas pressure to less than
14” W.C. (3.49 kPa) (1/2 PSI Gauge). Appliances require gas
regulators that are properly sized for the water heater input and
deliver the rating plate specified pressures. Gas supply systems
where pressure exceeds 5 PSI (34.5 kPa) often require multiple
regulators to achieve desired pressures. Systems in excess
of 5 PSI building pressure should be designed by gas delivery
professionals for best performance. Water heaters connected to
gas supply systems that exceed 14” W.C. (3.49 kPa) (1/2 PSI
Gauge) at any time must be equipped with a gas supply regulator.
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.
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).
gas pressure reQuirements
All models require a minimum gas supply pressure of 3.5” W.C.
(0.87 kPa) The minimum supply pressure is measured while gas
is flowing (dynamic pressure). The supply pressure (dynamic)
should never fall below 3.5” W.C. (0.87 kPa) The supply pressure
should be measured with all gas fired appliances connected to
the common main firing at full capacity. If the supply pressure
drops more than 1.5” W.C. (0.37 kPa) as gas begins to flow to
the water heater then the supply gas system including the gas
line and/or the gas regulator may be restricted or undersized.
See Supply Gas regulator section and Gas Piping section of
this manual.
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. Table 5 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.
The gas valve on all models has a maximum gas supply pressure
limit of 14" W.C. (3.48 kPa). The maximum supply pressure is
measured while gas is not flowing (static pressure).
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 10) or at the hot water
taps to further reduce system water temperature.
supply gas regulator
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 maximum allowable gas supply pressure for this water
heater is 14 inches W.C. (3.48 kPa). Install a positive lock-up gas
pressure regulator in the gas supply line if inlet gas pressure can
exceed 14 inches W.C. (3.48 kPa) at any time. regulators must
be sized/used according to manufacturer's specifications.
taBle 5.
time for permanent Burns
water temperature
time for 1st degree Burn
(less Severe burns)
2nd & 3rd degree
(Most Severe burns)
°f (°C)
If a positive lock-up regulator is required follow these instructions:
1. Positive lock-up gas pressure regulators must be rated at or
110 (43)
116 (47)
116 (47)
122 (50)
131 (55)
140 (60)
149 (65)
154 (68)
(normal shower temp.)
(pain threshold)
35 minutes
above the input btu/hr rating of the water heater they supply.
2. Positive lock-up gas pressure regulator(s) should be
installed no closer than 3 feet (1 meter) and no farther than 8
feet (2.4 meters) of equivalent length from the water heater’s
inlet gas connection.
45 minutes
5 minutes
25 seconds
5 seconds
2 seconds
1 second
1 minute
5 seconds
3. After installing the positive lock-up gas pressure regulator(s)
an initial nominal supply pressure setting of 7.0” W.C. (1.74
kPa) while the water heater is operating is recommended
and will generally provide good water heater operation.
Some addition adjustment maybe required later to maintain
a steady gas supply pressure.
2 seconds
1 second
instantaneous
(u.S. Government Memorandum, C.P.S.C., Peter l. Armstrong, Sept. 15, 1978)
12
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expansion. Contact a local plumbing service agency to have a
thermal expansion tank installed.
HOT WATER
OUTLET
See Water line Connections on page 20 and Water Piping
Diagrams on page 34.
12” TO 15”
(30-38 cm)
temperature-pressure relief ValVe
TEMPERED WATER
OUTLET
CHECK
VALVE
COLD
WATER
INLET
Explosion Hazard
MIXING
VALVE
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22-
CSA 4.4 and ASME code.
CHECK
VALVE
TO TANK
INLET
Properly sized temperature-
pressure relief valve must be
installed in opening provided.
figure 10.
Can result in overheating and
excessive tank pressure.
dishwashing maChines
All dishwashing machines meeting the National Sanitation
Foundation requirements are designed to operate with water
flow pressures between 15 and 25 pounds per square inch
(103 kPa and 173 kPa). Flow pressures above 25 pounds
per square inch (173 kPa), or below 15 pounds per square
inch (103 kPa), will result in improperly sanitized dishes.
Where pressures are high, a water pressure reducing or flow
regulating control valve should be used in the 180°F (82°C)
line to the dishwashing machine and should be adjusted to
deliver water pressure between these limits.
Can cause serious injury or death.
This water heater is provided with a properly rated/sized and
certified combination Temperature-Pressure relief Valve (T&P
valve) by the manufacturer. The valve is certified by a nationally
recognized testing laboratory that maintains periodic inspection
of production of listed equipment of materials as meeting the
requirements for relief Valves for Hot Water Supply Systems,
ANSI Z21.22 • CSA 4.4, and the code requirements of ASMe.
The National Sanitation Foundation also recommends circulation
of 180°F (82°C) water. The circulation should be just enough
to provide 180°F (82°C) water at the point of take-off to the
dishwashing machine.
If replaced, the new T&P valve must meet the requirements
of local codes, but not less than a combination Temperature-
Pressure relief Valve rated/sized and certified as indicated in
the above paragraph. The new valve must be marked with a
maximum set pressure not to exceed the marked hydrostatic
working pressure of the water heater (150 psi = 1,035 kPa) and
a discharge capacity not less than the water heater btu/hr or kW
input rate as shown on the water heater’s model rating label.
Adjust flow by throttling a full port ball valve installed in the
circulating line on the outlet side of the pump. Never throttle flow
on the suction side of a pump. See Water Piping Diagrams in
this manual.
Closed water systems
NOTe: In addition to the factory installed Temperature-Pressure
relief Valve on the water heater, each remote storage tank that
may be installed and piped to a water heating appliance must also
have its own properly sized, rated and approved Temperature-
Pressure relief Valve installed. Call the toll free technical
support phone number listed on the back cover of this manual
for technical assistance in sizing a Temperature-Pressure relief
Valve for remote storage tanks.
Water supply systems may, because of code requirements
or such conditions as high line pressure, among others, have
installed devices such as pressure reducing valves, check
valves, and back flow preventers. Devices such as these cause
the water system to be a closed system.
thermal expansion
As water is heated, it expands (thermal expansion). In a closed
system the volume of water will grow when it is heated. As the
volume of water grows there will be a corresponding increase
in water pressure due to thermal expansion. Thermal expansion
can cause premature tank failure (leakage). This type of failure
is not covered under the limited warranty. Thermal expansion
can also cause intermittent Temperature-Pressure relief Valve
operation: water discharged from the valve due to excessive
pressure build up. This condition is not covered under the limited
warranty. The Temperature-Pressure relief Valve is not intended
for the constant relief of thermal expansion.
For safe operation of the water heater, the Temperature-Pressure
relief Valve must not be removed from its designated opening
nor plugged. The Temperature-Pressure relief Valve must be
installed directly into the fitting of the water heater designed for the
relief valve. Install discharge piping so that any discharge will exit
the pipe within 6 inches (15.2 cm) above an adequate floor drain,
or external to the building. In cold climates it is recommended
that it be terminated at an adequate drain inside the building. be
certain that no contact is made with any live electrical part. The
discharge opening must not be blocked or reduced in size under
any circumstances. excessive length, over 30 feet (9.14 m), or
A properly sized thermal expansion tank must be installed on use of more than four elbows can cause restriction and reduce
all closed systems to control the harmful effects of thermal the discharge capacity of the valve.
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No valve or other obstruction is to be placed between the see Closed Water Systems and Thermal expansion on page 13.
Temperature-Pressure relief Valve and the tank. Do not connect
discharge piping directly to the drain unless a 6” (15.2 cm)
If you do not understand these instructions or have any questions
regarding the Temperature-Pressure relief Valve call the toll free
air gap is provided. To prevent bodily injury, hazard to life, or
number listed on the back cover of this manual for technical
property damage, the relief valve must be allowed to discharge
assistance.
water in adequate quantities should circumstances demand. If
the discharge pipe is not connected to a drain or other suitable
means, the water flow may cause property damage.
ComBustiBle material storage
CAUTION
Fire or Explosion Hazard
Water Damage Hazard
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Temperature-Pressure Relief Valve discharge
pipe must terminate at adequate drain.
•
Avoid all ignition sources if you smell gas.
Do not expose water heater controls to excessive gas
pressure.
Use only the gas shown on the water heater rating label.
Maintain required clearances to combustibles.
t&p Valve discharge pipe requirements:
• Shall not be smaller in size than the outlet pipe size of the
valve, or have any reducing couplings or other restrictions.
Keep ignition sources away from faucets after extended
periods of non-use.
• Shall not be plugged or blocked.
• Shall not be exposed to freezing temperatures.
• Shall be of material listed for hot water distribution.
Read instruction manual before
installing, using or servicing
water heater.
• Shall be installed so as to allow complete drainage of both
the Temperature-Pressure relief Valve and the discharge
pipe.
• Must terminate a maximum of six inches above a floor
drain or external to the building. In cold climates, it is
recommended that the discharge pipe be terminated at an
adequate drain inside the building.
Keep water heater area clear and free of combustible materials,
gasoline and other flammable vapors and liquids.
Contaminated air
• Shall not have any valve or other obstruction between the
relief valve and the drain.
Breathing Hazard - Carbon Monoxide Gas
Burn hazard.
Install water heater in accordance with
the Instruction Manual and NFPA 54 or
CAN/CSA-B149.1.
Hot water discharge.
To avoid injury, combustion and ventilation
air must be taken from outdoors.
Keep clear of Temperature-
Pressure Relief Valve
discharge outlet.
Do not place chemical vapor emitting
products near water heater.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Corrosion of the flue ways and vent system may occur if air for
combustion contains certain chemical vapors. Such corrosion
may result in failure and risk of asphyxiation.
The Temperature-Pressure relief Valve must be manually
operated at least twice a year. Caution should be taken to
ensure that (1) no one is in front of or around the outlet of the
Temperature-Pressure relief Valve discharge line, and (2) the
water manually discharged will not cause any bodily injury or
property damage because the water may be extremely hot. If
after manually operating the valve, it fails to completely reset
and continues to release water, immediately close the cold water
inlet to the water heater, follow the draining instructions in this
manual, and replace the Temperature-Pressure relief Valve with
a properly rated/sized new one.
Combustion air that is contaminated can greatly diminish the life
span of the water heater and water heater components such as
hot surface igniters and burners. Propellants of aerosol sprays,
beauty shop supplies, water softener chemicals and chemicals
used in dry cleaning processes that are present in the combustion,
ventilation or ambient air can cause such damage.
Do not store products of this sort near the water heater. Air which
is brought in contact with the water heater should not contain any
of these chemicals. If necessary, uncontaminated air should be
obtained from remote or outdoor sources. The limited warranty
is voided when failure of water heater is due to a corrosive
atmosphere. (See limited warranty for complete terms and
conditions).
note: The purpose of a Temperature-Pressure relief Valve is
to prevent excessive temperatures and pressures in the storage
tank. The T&P valve is not intended for the constant relief of
thermal expansion. Aproperly sized thermal expansion tank must
be installed on all closed systems to control thermal expansion,
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provide combustion, ventilation and dilution air.
air reQuirements
unusually tight Construction
In unconfined spaces in buildings, infiltration may be adequate
to provide air for combustion, ventilation and dilution of flue
gases. However, in buildings of unusually tight construction (for
example, weather stripping, heavily insulated, caulked, vapor
barrier, etc.) additional air must be provided using the methods
described in the Confined Space section that follows.
Breathing Hazard - Carbon Monoxide Gas
Install water heater in accordance with
the Instruction Manual and NFPA 54 or
CAN/CSA-B149.1.
To avoid injury, combustion and ventilation
air must be taken from outdoors.
Confined spaCe
A Confined Space is one whose volume IS leSS THAN 50 cubic
feet per 1,000 btu/hr (4.8 cubic meters per kW) of the total input
rating of all appliances installed in the space.
Do not place chemical vapor emitting
products near water heater.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Openings must be installed to provide fresh air for combustion,
ventilation and dilution in confined spaces. The required size for
the openings is dependent on the method used to provide fresh
air to the confined space AND the total btu/hr input rating of all
appliances installed in the space.
For safe operation an adequate supply of fresh uncontaminated
air for combustion and ventilation must be provided.
An insufficient supply of air can cause recirculation of combustion
products resulting in contamination that may be hazardous to
life. Such a condition often will result in a yellow, luminous burner
flame, causing sooting of the combustion chamber, burners and
flue tubes and creates a risk of asphyxiation.
exhaust fans
Where exhaust fans are installed, additional air shall be provided
to replace the exhausted air. When an exhaust fan is installed
in the same space with a water heater, sufficient openings to
provide fresh air must be provided that accommodate the
requirements for all appliances in the room and the exhaust fan.
undersized openings will cause air to be drawn into the room
through the water heater’s vent system causing poor combustion.
Sooting, serious damage to the water heater and the risk of fire
or explosion may result. It can also create a risk of asphyxiation.
Do not install the water heater in a confined space unless an
adequate supply of air for combustion and ventilation is brought
in to that space using the methods described in the Confined
Space section that follows.
Never obstruct the flow of ventilation air. If you have any doubts
or questions at all, call your gas supplier. Failure to provide the
proper amount of combustion air can result in a fire or explosion
and cause property damage, serious bodily injury or death.
louvers and grilles
The free areas of the fresh air openings in the instructions that
follow do not take in to account the presence of louvers, grilles or
screens in the openings.
unConfined spaCe
An unconfined Space is one whose volume IS NOT leSS THAN
50 cubic feet per 1,000 btu/hr (4.8 cubic meters per kW) of the
total input rating of all appliances installed in the space. rooms
communicating directly with the space, in which the appliances
are installed, through openings not furnished with doors, are
considered a part of the unconfined space.
The required size of openings for combustion, ventilation and
dilution air shall be based on the “net free area” of each opening.
Where the free area through a design of louver or grille or screen
is known, it shall be used in calculating the size of opening
required to provide the free area specified. Where the louver and
grille design and free area are not known, it shall be assumed
that wood louvers will have 25% free area and metal louvers and
grilles will have 75% free area. Non motorized louvers and grilles
shall be fixed in the open position.
Makeup air requirements for the operation of exhaust fans,
kitchen ventilation systems, clothes dryers and fireplaces shall
also be considered in determining the adequacy of a space to
Venting installation
• Do not connect the heater to a common vent or chimney with
solid fuel burning equipment. This practice is prohibited by
many local building codes as is the practice of venting gas
fired equipment to the duct work of ventilation systems.
Venting
THe INSTruCTIONS IN THIS SeCTION ON VeNTING MuST
be FOllOWeD TO AVOID CHOKeD COMbuSTION Or
reCIrCulATION OF Flue GASeS. SuCH CONDITIONS CAuSe
SOOTING Or rISKS OF FIre AND ASPHyXIATION.
This heater is not approved for direct vent installation.
Heater must be protected from freezing downdrafts.
remove all soot or other obstructions from the chimney that will
retard a free draft.
Type b venting is required with these heaters. For typical venting
application see TeCHNICAl DATAVeNTING on pages 18 and 19.
figure 11.
figure 12.
This water heater must be vented in compliance with all local codes,
the current revision of the National Fuel Gas Code (ANSI-Z223.1)
and with the Category I Venting Tables.
• Where a separate vent connection is not available and the vent
pipe from the heater must be connected to a common vent with
an oil burning furnace, the vent pipe should enter the smaller
common vent or chimney at a point above the large vent pipe.
If any part of the vent system is exposed to ambient temperatures
below 40°F (4.4°C) it must be insulated to prevent condensation.
15
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multiple heater manifold
outdoor air through one opening
Figure 13 and tables on pages 18 and 19 should be used for
horizontally manifolding two or more heaters.
figure 15.
Alternatively a single permanent opening, commencing within 12
inches (300 mm) of the top of the enclosure, shall be provided.
See Figure 14. The water heater shall have clearances of at
least 1 inch (25 mm) from the sides and back and 6 inches (l50
mm) from the front of the appliance. The opening shall directly
communicate with the outdoors or shall communicate through a
vertical or horizontal duct to the outdoors or spaces that freely
communicate with the outdoors and shall have a minimum free
area of the following:
figure 13.
fresh air openings for Confined spaCes
The following instructions shall be used to calculate the size,
number and placement of openings providing fresh air for
combustion, ventilation and dilution in confined spaces. The
illustrations shown in this section of the manual are a reference
for the openings that provide fresh air into confined spaces
only. DO NOT refer to these illustrations for the purpose of vent
installation. See Venting Installation on page 15 for complete
venting installation instructions.
1. 1 square inch per 3000 btu/hr (733 mm2 per kW) of the total input rating
of all appliances located in the enclosure, and
2. Not less than the sum of the areas of all vent connectors in the space.
outdoor air through two horiZontal duCts
outdoor air through two openings
figure 16.
The confined space shall be provided with two permanent
horizontal ducts, one commencing within 12 inches (300 mm) of
the top and one commencing within 12 inches (300 mm) of the
bottom of the enclosure. The horizontal ducts shall communicate
directly with the outdoors. See Figure 16.
figure 14.
The confined space shall be provided with two permanent
openings, one commencing within 12 inches (300 mm) of the top
and one commencing within 12 inches (300 mm) of the bottom of each duct opening shall have a minimum free area of 1 square
the enclosure. The openings shall communicate directly with the inch per 2,000 btu/hr (1100 mm2 per kW) of the aggregate input
outdoors. See Figure 14.
rating of all appliances installed in the enclosure.
each opening shall have a minimum free area of 1 square inch When ducts are used, they shall be of the same cross sectional
per 4,000 btu/hr (550 mm2 per kW) of the aggregate input rating area as the free area of the openings to which they connect.
of all appliances installed in the enclosure. each opening shall The minimum dimension of rectangular air ducts shall be not less
not be less than 100 square inches (645 cm2).
than 3 inches (7.6 cm).
16
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When ducts are used, they shall be of the same cross sectional
area as the free area of the openings to which they connect.
The minimum dimension of rectangular air ducts shall be not less
than 3 inches.
outdoor air through two VertiCal duCts
The illustrations shown in this section of the manual are a
reference for the openings that provide fresh air into confined
spaces only.
air from other indoor spaCes
do not refer to these illustrations for the purpose of vent
installation. See Venting Installation on page 15 for complete
venting installation instructions.
figure 18.
The confined space shall be provided with two permanent
openings, one commencing within 12 inches (300 mm) of the top
and one commencing within 12 inches (300 mm) of the bottom of
the enclosure. See Figure 18.
figure 17.
The confined space shall be provided with two permanent vertical
ducts, one commencing within 12 inches (300 mm) of the top and
one commencing within 12 inches (300 mm) of the bottom of the
enclosure. The vertical ducts shall communicate directly with the
outdoors. See Figure 17.
each opening shall communicate directly with an additional
room(s) of sufficient volume so that the combined volume of all
spaces meets the criteria for an unconfined Space.
each opening shall have a minimum free area of 1 square inch
per 1,000 btu/hr (2200 mm2 per kW) of the aggregate input rating
of all appliances installed in the enclosure. each opening shall
not be less than 100 square inches (645 cm2).
each duct opening shall have a minimum free area of 1 square
inch per 4,000 btu/hr (550 mm2 per kW) of the aggregate input
rating of all appliances installed in the enclosure.
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taBle 6. teChniCal data Venting
type B gas Vent
multiple gas fired tank-type heaters
When venting multiple tank type heaters using Type b vent
pipe, follow the installation diagram (figure 13) and tables
below which give sizing and data based upon NFPA 54/ANSI
Z223. 2006.
model sBl95 199ne
input: 199,000 Btu/hr
Vent Connector size: 6 inches
input Btuh/hr
total Vent height (feet)
6
8
10
15
20
30
50
100
rise
1 Ft.
2 Ft.
3 Ft.
Vent Connector diameter (inches)
199,000
7
7
6
7
7
6
7
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
199,000
199,000
Combined input in
number of 199 heaters
manifold and Common Vent diameters (inches)
thousands of Btu/hr
2
3
4
398,000
597,000
796,000
7
7
6
7
7
6
7
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
18
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taBle 7. teChniCal data Venting (Continued)
model sBl85 275ne(a)
input: 275,000 Btu/hr
total Vent height (feet)
10 15 20 30
Vent Connector diameter (inches)
Vent Connector size: 6 inches
6
8
50
100
input Btu/hr
275,000
rise
1 Ft.
2 Ft.
3 Ft.
8
8
7
8
8
7
7
7
7
7
7
7
6
6
6
6
6
6
6
6
6
6
6
6
275,000
275,000
Combined input in
thousands of Btu/hr
number of 275 heaters
manifold and Common Vent diameters (inches)
2
550,000
825,000
10
12
14
9
9
8
8
9
8
9
7
8
9
7
8
9
3
12
14
12
14
10
12
4
1,100,000
12
10
model sBl85 390ne(a)
input: 390,000 Btu/hr
Vent Connector size: 6 inches
total Vent height (feet)
10 15 20 30
6
8
50
100
input Btu/hr
390,000
rise
1 Ft.
2 Ft.
3 Ft.
Vent Connector diameter (inches)
10
9
9
9
9
9
9
8
9
8
8
8
8
8
8
8
8
8
8
8
8
8
8
390,000
390,000
9
Combined input in
thousands of Btu/hr
number of 400 heaters
manifold and Common Vent diameters (inches)
2
3
4
780,000
1,170,000
1,560,000
12
14
16
12
14
16
10
14
16
10
12
14
9
9
8
8
9
12
14
10
12
10
12
10
19
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water heater installation
water line ConneCtions
t&p ValVe disCharge pipe
The water piping installation must conform to these instructions
and to all local code authority having jurisdiction. Good practice
requires that all heavy piping be supported.
read and observe all requirements in the following sections
before installation of the water piping begins:
Explosion Hazard
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22-
CSA 4.4 and ASME code.
1. Water Temperature Control and Mixing Valves on page 12.
2. Dishwashing Machines on page 13.
3. Temperature-Pressure relief Valve on page 13.
4. Closed Systems and Thermal expansion on page 13.
Properly sized temperature-
pressure relief valve must be
installed in opening provided.
5. For multiple water heater installations see Water Piping
Diagrams beginning on page 34.
Can result in overheating and
excessive tank pressure.
water (potable) heating and space heating
1. All piping components connected to this unit for space
heating applications shall be suitable for use with potable
water.
Can cause serious injury or death.
2. Toxic chemicals, such as those used for boiler treatment,
This water heater is provided with a properly rated/sized and
certified combination temperature - pressure (T&P) relief valve by
themanufacturer.SeeTemperature-PressurereliefValveonpages
13-14 for information on replacement and other requirements.
shall NeVer be introduced into this system.
3. This unit may NeVer be connected to any existing heating
system or component(s) previously used with a non-potable
water heating appliance.
4. When the system requires water for space heating at
temperatures higher than required for domestic water
purposes, a tempering valve must be installed. Please
refer to installation diagrams beginning on page 34 of this
manual for suggested piping arrangements.
CAUTION
Water Damage Hazard
Temperature-Pressure Relief Valve discharge
pipe must terminate at adequate drain.
•
5. These water heaters cannot be used in space heating
applications only
thermometers (not supplied)
Thermometers should be obtained and field installed as shown
in the installation diagrams.
Install a discharge pipe between theT&Pvalve discharge opening
and a suitable floor drain. Do not connect discharge piping
directly to the drain unless a 6” (15.2 cm) air gap is provided.
To prevent bodily injury, hazard to life, or property damage, the
relief valve must be allowed to discharge water in adequate
quantities should circumstances demand. If the discharge pipe is
not connected to a drain or other suitable means, the water flow
may cause property damage.
Thermometers are installed in the system as a means of
detecting the temperature of the outlet water supply.
water piping diagrams
This manual provides detailed water piping diagrams for typical
methods of application for the water heaters, see Water Piping
Diagrams beginning on page 34.
t&p Valve discharge pipe requirements:
• Shall not be smaller in size than the outlet pipe size of the
valve, or have any reducing couplings or other restrictions.
The water heater may be installed by itself, or with a separate
storage tank. When used with a separate storage tank, the
circulation may be either by gravity or by means of circulating
pump. Adjust flow by throttling a full port ball valve installed in the
circulating line on the outlet side of the pump. Never throttle flow
on the suction side of a pump. See the Water Piping Diagrams
beginning on page 34.
• Shall not be plugged or blocked.
• Shall not be exposed to freezing temperatures.
• Shall be of material listed for hot water distribution.
• Shall be installed so as to allow complete drainage of both
the Temperature-Pressure relief Valve and the discharge
pipe.
note: In addition to the factory installed Temperature-Pressure
relief Valve (T&P valve) on the water heater, each remote
storage tank that may be installed and piped to a water heating
appliance must also have its own properly sized, rated and
approved Temperature-Pressure relief Valve installed.
• Must terminate a maximum of six inches above a floor
drain or external to the building. In cold climates, it is
recommended that the discharge pipe be terminated at an
adequate drain inside the building.
Call the toll free technical support phone number listed on the
back cover of this manual for further assistance in sizing a T&P
valve for remote storage tanks.
• Shall not have any valve or other obstruction between the
relief valve and the drain.
20
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temperature setting should not exCeed
safe use temperature at fixtures. see water
temperature Control and mixing ValVes on
page 12. if higher preheat temperatures are
neCessary to oBtain adeQuate Booster output,
add an anti-sCald ValVe for hot water supplied
to fixtures.
installation diagrams - top inlet/outlet usage
use of the top inlet water connection requires an inlet dip tube
(refer to figure 19). The tube is supplied in the heater. Follow
caution labels if applying heat to this fitting. Do not allow pipe
dope to contact the plastic tube during installation.
tuBe inlet installation
figure 19.
21
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heater wiring
All electrical work must be installed in accordance with the latest version of the National electrical Code ANSI/NFPA No. 70 and
must conform to all local code authority having jurisdiction. AN eleCTrICAl GrOuND IS requIreD TO reDuCe rISK OF
eleCTrICAl SHOCK Or POSSIble eleCTrOCuTION.
The controls of this water heater are polarity sensitive. be certain to properly wire the hot and neutral connections.
WIRING DIAGRAM FOR SBL95 199NE, SBL85 275NE(A) & SBL85 390NE(A) WHEN EQUIPPED WITH FENWAL IGNITION
CONTROL, WHITE-RODGERS THERMOSTAT, FASCO BLOWER AND ATV12 VARIABLE FREQUENCY DRIVE.
figure 20.
22
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supply gas regulator
The minimum gas supply pressure must not be less than 3.5" w.c.
(0.87 kPa).
gas piping
Contact your local gas service company to ensure that adequate
gas service is available and to review applicable installation codes
for your area.
Do not subject the gas valve to inlet gas pressures of more than
14.0” W.C. (3.48 kPa). A supply gas regulator is necessary if higher
gas pressures are encountered. See Gas Pressure requirements
and Supply Gas regulator sections on page 12.
Size the main gas line in accordance with Table 8. The figures shown
are for straight lengths of pipe at 0.5 in. W.C. pressure drop, which is
considered normal for low pressure systems. Note: Fittings such as
elbows, tees and line regulators will add to the pipe pressure drop.
Also refer to the latest version of the National Fuel Gas Code.
1. Supply gas regulators must be rated above the input btu/hr rating
of the water heater they supply.
2. Supply gas regulators shall have inlet and outlet connections not
less than the minimum supply gas line size for the water heater
they supply. See Table 8. on page 23.
Schedule 40 Steel or Wrought Iron Pipe is the preferred material
for the gas line of this water heater. It is imperative to follow the
sizing recommendations in the latest version of the National Fuel
Gas Code if Corrugated Stainless Steel Tubing (CSST) is used as
the gas line for this water heater.
gas piping and sediment trap installation
The heater is not intended for operation at higher than 14.0" W.C.-
natural gas, (1/2 pound per square inch gage) supply gas pressure.
exposure to higher supply pressure may cause damage to the
gas valve which could result in fire or explosion. If overpressure
has occurred such as through improper testing of gas lines or
emergency malfunction of the supply system, the gas valve must be
checked for safe operation. Make sure that the outside vents on the
supply regulators and the safety vent valves are protected against
blockage. These are parts of the gas supply system, not the heater.
Vent blockage may occur during ice storms.
taBle 8 - gas supply pipe lengths (in feet)
maximum equivalent pipe length - natural gas only
Schedule 40 Steel or Wrought Iron Pipe
Input rate
(bTu/Hr)
figure 21.
1/2"
3/4"
70
40
30
30
20
10
10
-
1"
200
150
100
90
60
50
40
30
1 1/4"
200
200
200
200
200
200
150
100
100
1 1/2"
200
200
200
200
200
200
200
200
200
120,000
154,000
180,000
199,000
250,000
275,000
310,000
366,000
390,000
Fitting Type*
45°ell
20
10
-
-
-
-
-
-
-
gas line leak testing
Fire and Explosion Hazard
Use joint compound or Teflon tape
compatible with propane gas.
Leak test before placing the water
heater in operation.
Disconnect gas piping and main gas
shutoff valve before leak testing.
-
20
equivalent length in feet
0.7
1.6
3.1
1.0
2.1
4.1
1.2
2.6
5.2
1.6
3.5
6.9
1.9
4.0
8.0
90°ell
Tee
Natural Gas 0.60 Specific Gravity, 0.50" W.C. Pressure Drop
*Screwed Fittings
Install sediment trap in accordance
with NFPA 54.
It is important to guard against gas valve fouling from contaminants
in the gas ways. Such fouling may cause improper operation, fire or
explosion.
Any time work is done on the gas supply system perform a leak test
to avoid the possibility of fire or explosion.
If copper supply lines are used they must be internally tinned and
certified for gas service. before attaching the gas line, be sure that
all gas pipe is clean on the inside.
1. For test pressures exceeding 1/2 psi (3.45 kPa) disconnect the
water heater and its Main Gas Shutoff Valve from the gas supply
piping system during testing, see Figure 21. The gas supply line
must be capped when disconnected from the water heater.
To trap any dirt or foreign material in the gas supply line, a sediment
trap must be incorporated in the piping (see Figure 21). The sediment
trap must be readily accessible and not subject to freezing conditions.
Install in accordance with recommendations of serving gas suppliers.
refer to the latest version of the National Fuel Gas Code.
2. For test pressures of 1/2 psi (3.45 kpa) or less, the appliance need
not be disconnected, but must be isolated from the supply gas line
by closing the Main Gas Shutoff Valve during testing.
3. Coat all supply gas line joints and connections upstream of the
water heater with a non-corrosive soap and water solution to
test for leaks. bubbles indicate a gas leak. Do not use matches,
candles, flame or other sources of ignition for this purpose.
To prevent damage, care must be taken not to apply too much torque
when attaching gas supply pipe to gas valve inlet.
Apply joint compounds (pipe dope) sparingly and only to the male
threads of pipe joints. Do not apply compounds to the first two threads.
use compounds resistant to the action of liquefied petroleum gases.
4. repair any leaks before placing the water heater in operation.
purging
gas meter size – natural gases only
Gas line purging is required with new piping or systems in which air
has entered.
be sure the gas meter has sufficient capacity to supply the full rated
gas input of the water heater as well as the requirements of all other
gas fired equipment supplied by the meter. If gas meter is too small, ask
the gas company to install a larger meter having adequate capacity.
Purging should be performed per the current edition of NFPA 54 the
National Fuel Gas Code.
23
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start up
prior to start up
initial start up
Installation and start up of this water heater requires abilities
and skills equivalent to that of a licensed tradesman in the field
involved, see qualifications on page 6.
required test equipment
u-tube manometer, pressure gauge, or digital manometer.
recommended range: 20” W.C. (5 kPa).
Do not place the water heater in operation if any part has been
under water. Immediately call a qualified service technician to
inspect the water heater and to replace any part of the control
system and any gas control which has been under water.
note: All test equipment must be acclimated to ambient
temperature before calibration and use.
preparation
1. Adjust the thermostat to the lowest temperature setting.
light the water heater in accordance with the lighting and
Operation Instruction label on the water heater and in this manual
on page 26.
2. Turn the water heater’s on/off switch to the “off” position.
3. Close the Main Gas Shut Off Valve, see Figure 21 on page 23.
4. Wait five (5) minutes for any residual gas to clear.
The water heaters covered by this manual are equipped with
an electronic control system that automatically sequences the
blower, the Igniter, the 24 VAC Gas Valve, burner ignition,
and flame sensing. The control system will lock out after three
unsuccessful ignition attempts.
5. Open the Supply Gas Pressure Port on the gas valve by turning
the center screw counter-clockwise. Connect the manometer
to the supply gas pressure test port, see Figure 22 on page 25.
6. Open the Main Gas Shutoff Valve.
7. Measure and record the supply gas pressure, this is a “static”
supply gas pressure reading; while the water heater is not firing.
before attempting start up, thoroughly study and familiarize
yourself with the exact Sequence Of Operation, see the written
Sequence Of Operation on page 26 and the Sequence Of
Operation Flow Chart on page 27.
be certain that the water heater is full of water, that air is purged
from the gas and water lines and that there are no leaks in the
gas and water lines. ensure all inlet water valves are open.
filling the water heater
Follow these steps to fill the water heater prior to start up.
1. Close the heater drain valve.
2. Open a nearby hot water faucet to permit the air in the system
to escape.
figure 22. – top View
3. Fully open the cold water inlet valve allowing the piping and
water heater to fill with water.
lighting the water heater
1. Turn the water heater’s on/off switch to the “on” position.
4. Close the hot water faucet opened in Step 2 as water starts to flow.
2. Adjust the thermostat to the desired water temperature.
supply gas line purging
3. record the supply gas pressure when the 24 VAC Gas Valve is
energized and the burner is operating. This is a “dynamic” gas
pressure reading; while the water heater is firing.
4. Compare the actual supply gas pressure reading recorded
above to the required minimum/maximum values given in
Table 3 on page 8. Adjust supply gas pressure as necessary,
see the instructions that follow.
Fire or Explosion Hazard
Gas line purging is required with new piping or systems in
which air has entered.
5. After the supply gas pressure adjustments are complete, turn
off the water heater and close the Main Gas Supply Shut
Off Valve. Disconnect the manometer from the Supply Gas
Pressure Port and turn the center screw clockwise until the
port is closed.
To avoid risk of fire or explosion purge discharge must not
enter into confined areas or spaces where ignition can occur.
The area must be well ventilated and all sources of ignition
must be deactivated or removed.
Use only the gas shown on the water heater rating label.
Keep ignition sources away from faucets after extended
periods of non-use.
supply gas pressure adjustment
Read instruction manual before
installing, using or servicing
water heater.
Fire and Explosion Hazard
Do not use water heater with any gas
other than the gas shown on the rating
label.
Excessive gas pressure to gas valve can
cause serious injury or death.
1. Close the Main Gas Shutoff Valve, see Figure 21 on page 23.
2. Purge all air from the supply gas line up to the water heater’s
Main Gas Shutoff Valve.
3. When all air has been purged from the supply gas line, tighten
all supply gas line connections.
4. Check for gas leaks, see Gas line leak Testing on page 23
Turn off gas lines during installation.
Contact a qualified installer or service
agency for installation and service.
and repair any leaks found.
24
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Supply gas pressure shall be measured while the water heater 7. If improper venting is observed during any of the above tests,
is not firing (static pressure) and while the water heater is firing
at full capacity (dynamic pressure).
the venting system must be corrected.
FAIlure TO COrreCT bACK DrAFTS MAy CAuSe AIr
If the supply gas pressure to the water heater is not between CONTAMINATION AND uNSAFe CONDITIONS.
the required minimum and maximum values given in Table 3
on page 8 adjust the supply gas regulator as necessary. Adjust
• If the back draft cannot be corrected by the normal method or
if a suitable draft cannot be obtained, a blower type flue gas
the supply gas regulator(s) per the regulator manufacturer’s
exhauster must be employed to assure proper venting and
instructions to achieve the required “static” and “dynamic”
correct combustion.
supply gas pressure.
CheCking the input
multiple appliance installations:
Follow these instructions to determine the firing rate of the water
In multiple water heater installations or in installations where
heater.
the installed water heater(s) share a common gas supply main
1. Follow the procedure described in the "Initial Start up" section
on page 24 to measure the static and dynamic supply gas
pressures. Verify that the static and dynamic supply gas
pressures conform to the values listed in Table 3 on page 8.
with other gas fired appliances; the supply gas pressures shall
be measured at each water heater with all gas fired appliances
connected to a common main firing at full capacity.
Onmultiplewaterheaterinstallationsthesupplygaslineregulators
shall be adjusted to provide gas pressure to each water heater
within the minimum and maximum supply pressure requirements
listed in Table 3 on page 8 with all gas fired appliances connected
to a common gas main firing at full capacity.
2. use this formula to “clock” the meter. be sure that other gas
consuming appliances are not operating during this interval.
(3600/T) x H = btuh
T = Time in seconds to burn one cubic foot of gas.
H = btu’s per cubic foot of gas.
btuh = Actual heater input.
note: A pressure drop of more than 1.5” W. C. (0.37 kPa)
when the Main burner ignites is an indication of an inadequate
supply of gas and can lead to ignition failure, rough starts and/
or rough operation. If a drop of more than 1.5” W. C. (0.37 kPa)
in supply gas pressure occurs when the Main burner ignites,
ensure the supply gas lines and regulator(s) are properly sized
and installed. See the requirements for Supply Gas regulator
on page 12 and Gas Piping on page 23. ensure all requirements
and installation instructions are maintained.
example: (Sbl85 275Ne)
T = 13.1 seconds
H = 1000 bTu/Cu.Ft.
btuh = (3,600/13.1) x 1,000 = 275,000
(Compare with Sbl85 275Ne model and rating.)
CheCking Venting
uNDer NO CIrCuMSTANCeS SHOulD THe GAS INPuT eXCeeD
THe INPuT SHOWN ON THe HeATer'S rATING PlATe.
The following steps shall be followed with each appliance
connected to the venting system placed in operation, while any
other appliances connected to the venting system are not in
operation.
water temperature adjustment
1. Seal any unused openings in the venting system.
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
2. Inspect the venting system for proper size and horizontal pitch, as
required in the National Fuel Gas Code, ANSI Z223.1or the CAN/
CGA b149 Installation Codes and these instructions. Determine
that there is no blockage or restriction, leakage, corrosion and
other deficiencies which could cause an unsafe condition.
Children, the elderly and the
physically or mentally disabled are at
highest risk for scald injury.
Feel water before bathing or
showering.
3. So far as is practical, close all building doors and windows
and all doors between the space in which the water heater(s)
connected to the venting system are located and other spaces
of the building. Turn on all appliances not connected to the
venting system. Turn on all exhaust fans, such as range hoods
and bathroom exhausts, so they shall operate at maximum
speed. Close fireplace dampers.
Temperature limiting devices such as
mixing valves must be installed
when required by codes and to
ensure safe temperatures at fixtures.
The water temperature is controlled by a thermostat, Fig. 3,
which has two sensing elements. One sensor is located near the
top of the tank and the other is near the center. The thermostat
is set in the lowest position before the heater leaves the factory.
4. Follow the lighting instruction. Place the water heater being
inspected in operation. Adjust thermostat so appliance shall
operate continuously.
5. Inspect vent system for leakage after 5 minutes of main burner
operation.
The thermostat temperature dial, Fig. 3, is accessible by
removing the control cover. The dial is adjustable and may be set
for 120°F (49°C) to 180°F (82°C) water temperature, but 120°F
(49°C) is the recommended starting point. It is suggested the dial
be placed on the lowest setting which produces an acceptable
hot water supply. This will always give the most energy efficient
operation. The temperature control has a 4°F fixed differential.
6. After it has been determined that each appliance connected
to the venting system properly vents when tested as outlined
above, return doors, windows, exhaust fans, fireplace
dampers and any other gas burning appliance to their previous
conditions of use.
25
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seQuenCe of operation
The following information will describe the Sequence of Operation 8. If the Flame Sensor does not detect a strong enough flame, the
for this water heater.
Ignition Control shuts off the Gas Valve and allows the blower to
purge the unit for 30 seconds. At that time, the Ignition Control
restarts with step 6. It will try and ignite the main burners 2 more
times. If the unit does not light, the Ignition Control will wait 15
minutes and then restart at step 6. This cycle will continue until
the unit lights or the power is shutoff to the unit.
1. Switch power on to unit.
2. Thermostat calls for heat.
3. Variable Frequency Drive sends power to blower.
4. Combustion blower initiates air flow through water heater closing
the Prover Switch.
9. If the Flame Sensor detects a strong flame, the Ignition Control
will allow the unit to operate until the thermostat is satisfied.
5. blower runs at low speed for 30 second pre-purge.
10. Once the unit is satisfied, the Thermostat will shut off the blower,
Gas Valve and Ignition Control and the unit will be in standby
mode until another call for heat is initiated by the thermostat.
6. The Ignition Control provides power to the Spark Igniter and
opens the Gas Valve.
7. Ignition Control maintains spark for up to 4 seconds and monitors
Flame Sensor to determine if burner is lit.
See the flow chart on page 27 for more detailed information.
lighting & operating laBel
FOR YOUR SAFETY READ BEFORE OPERATING
If you do not follow these instructions exactly, a fire or
explosion may result causing property damage, personal injury
or loss of life.
WARNING:
FLAMMABLE
BEFORE OPERATING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES.
If you cannot reach your gas supplier, call the fire
department.
A. This appliance does not have a pilot. It is equipped with
an ignition device which automatically lights the burner.
Do not try to light the burner by hand.
C. Use only your hand to push the control buttons. Never use
tools. If the control buttons will not push in, don’t try to
repair them, call a qualified service technician. Force or
attempted repair may result in a fire or explosion.
B.
BEFORE OPERATING smell all aroung the area for gas.
Be sure to smell next to the floor because some gas is
heavier than air and will settle on the floor.
D. Do not use this appliance if any part has been under water.
Immediately contact a qualified installer or service agency
to replace a flooded water heater. Do not attempt to repair
the unit. It must be replaced!
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electric switch;
do not use any phone in your building.
Immediately call your gas supplier from a neighbor's
phone. Follow the gas suppliers instructions.
OPERATING INSTRUCTIONS
STOP! Read the safety information
1.
2.
8.
Set the thermostat to the desired setting.
above on this label.
CAUTION: Hotter water increases the risk
of scald injury. Consult the instruction
manual before changing temperature.
Set the ON/OFF switch on the control box to
the “OFF” position.
Set the thermostat to the lowest setting.
3.
4.
9.
If the appliance will not operate, follow the
instructions “TO TURN OFF GAS TO
APPLIANCE” and call your technician or gas
supplier.
This appliance is equipped with a device which
automatically lights the burner.
DO NOT TRY TO LIGHT THE BUNER BY HAND.
5. Wait five (5) minutes
If you then smell gas,
to clear out any gas.
STOP! Follow “B”
WARNING: TURN OFF ALL ELECTRIC
POWER BEFORE SERVICING.
in the safety information above on this label. If
you don’t smell gas, go to the next step.
6.
7.
Turn on all electrical power to the appliance.
Set the ON/OFF switch on the control box to
the “ON” position.
ON
OFF
TO TURN OFF GAS TO APPLIANCE
1.
3.
Set the thermostat to the lowest setting.
Turn off all electrical power to the appliance
if service is to be performed.
2.
Set the ON/OFF switch on the control box to
the “OFF” position.
figure 23.
26
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seQuenCe of operation flow Chart
Description of this flow chart can be found in the “SequeNCe OF OPerATION” section found on page 26.
Switch power on to unit
Thermostat calls for heat
VFD sends power to Blower
Blower engages Prover Switch
Blower runs at low speed
After 30 seconds, Ignition
Control provides power to
Spark Igniter and opens Gas
Valve
Ignition Control maintains spark for up
to 4 seconds and monitors Flame
Sensor to determine if Burner is lit
NO
Wait 15 minutes.
Blower runs at
low speed
NO
YES
Does Burner
light?
Is this the third
ignition trial?
Gas Valve – off
YES
Ignition Control changes Blower from
low speed to high speed after 5 seconds
Ignition Control monitors
flame signal
NO
YES
YES
Is this the third loss
of flame signal?
Loss of flame signal?
Gas Valve – off
NO
Thermostat is satisfied
Blower – off; Blower Prover – opens
Ignition Control – off; Gas Valve – closes
figure 24.
27
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maintenanCe
expansion on page 13. The Temperature-Pressure relief Valve
is not intended for the constant relief of thermal expansion.
Venting system
examine the venting system every six months for obstructions
and/or deterioration of the vent piping. Check all vent system
connections for leakage and repair or reseal as necessary.
Temperature-Pressure relief Valve leakage due to pressure build
up in a closed system that does not have a thermal expansion
tank installed is not covered under the limited warranty. Thermal
expansion tanks must be installed on all closed water systems.
remove all soot or other obstructions from chimney which will
retard free draft.
DO NOT PluG THe TeMPerATure-PreSSure relIeF
VAlVe OPeNING. THIS CAN CAuSe PrOPerTy DAMAGe,
SerIOuS INJury Or DeATH.
intake air sCreen
The intake air screen is attached to the inlet end of the combustion
blower. Inspect the intake air screen every six months. The intake air
screen should be cleaned of any buildup of debris or foreign material.
temperature-pressure relief ValVe test
explosion hazard
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22-
CSA 4.4 and ASMe code.
• Burn hazard.
• Hot water discharge.
Properly sized temperature-
pressure relief valve must be
installed in opening provided.
• Keep clear of Temperature-
Pressure Relief Valve
discharge outlet.
Can result in overheating and
excessive tank pressure.
It is recommended that the Temperature-Pressure relief Valve
should be checked to ensure that it is in operating condition
every 6 months.
Can cause serious injury or death.
When checking theTemperature-Pressure relief Valve operation,
make sure that (1) no one is in front of or around the outlet of the
Temperature-Pressure relief Valve discharge line, and (2) that
the water discharge will not cause any property damage, as the
water may be extremely hot. use care when operating valve as
the valve may be hot.
anode rod inspeCtion
To check the relief valve, lift the lever at the end of the valve
several times, see Figure 25. The valve should seat properly and
operate freely.
If after manually operating the valve, it fails to completely reset and
continues to release water, immediately close the cold water inlet
to the water heater and drain the water heater, see Draining and
Flushing on page 29. replace the Temperature-Pressure relief
The anode rod is used to protect the tank from corrosion. Most
hot water tanks are equipped with an anode rod. The submerged
rod sacrifices itself to protect the tank. Instead of corroding tank,
water ions attack and eat away the anode rod. This does not affect
water’s taste or color. The rod must be maintained to keep tank
in operating condition.
Valve with a properly rated/sized new one, see Temperature-
Pressure relief Valve on pages 13-14 for instructions on
replacement.
Anode deterioration depends on water conductivity, not necessarily
water condition. A corroded or pitted anode rod indicates high
water conductivity and should be checked and/or replaced more
often than an anode rod that appears to be intact. replacement
of a depleted anode rod can extend the life of your water heater.
Inspection should be conducted by a qualified technician, and at
a minimum should be checked annually after the warranty period.
Artificially softened water is exceedingly corrosive because the
process substitutes sodium ions for magnesium and calcium ions.
figure 25.
The use of a water softener may decrease the life of the water
heater tank.
If the Temperature-Pressure relief Valve on the water heater
weeps or discharges periodically, this may be due to thermal
expansion.
The anode rod should be inspected after a maximum of three
years and annually thereafter until the condition of the anode
rod dictates its replacement. Anode replacement is not covered
by warranty.
NOTe: excessive water pressure is the most common cause of
Temperature-Pressure relief Valve leakage. excessive water
system pressure is most often caused by "thermal expansion"
in a "closed system." See Closed Water Systems and Thermal
NOTe: Artificially softened water requires the anode rod to be
inspected annually.
28
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draining and flushing
periodiC remoVal of lime deposits from
tank type CommerCial water heaters
The amount of calcium carbonate (lime) released from water is
in direct proportion to water temperature and usage, see chart.
The higher the water temperature or water usage, the more lime
deposits are dropped out of the water. This is the lime scale
which forms in pipes, heaters and on cooking utensils.
Burn harzard.
Hot water discharge.
lime accumulation may affect the life of equipment, the efficiency
of the heater, and fuel consumption characteristics. The usage of
water softening equipment greatly reduces the hardness of the
water. However, this equipment does not always remove all of
the hardness (lime). For this reason it is recommended that a
regular schedule for deliming be maintained.
Keep hands clear of drain
valve discharge.
It is recommended that the water heater storage tank be drained
and flushed every 6 months to reduce sediment buildup. The
water heater should be drained if being shut down during freezing
temperatures.
The time between cleaning will vary from weeks to years
depending upon water conditions and usage.
The depth of lime buildup should be measured periodically.
Heaters equipped with cleanouts will have about 2" of lime
buildup when the level of lime has reached the bottom of the
cleanout opening. A schedule for deliming should then be set up
based on the amount of time it would take for a 1" buildup of lime.
It is recommended that the water heater initially be inspected
after 6 months.
to drain the water heater storage tank:
1. Turn off the electrical supply to the water heater.
2. Turn off the gas supply at the Main Gas Shutoff Valve if
the water heater is going to be shut down for an extended
period.
3. ensure the cold water inlet valve is open.
example 1:
4. Open a nearby hot water faucet and let the water run until
the water is no longer hot.
Initial inspection after 6 months shows 1/2" of lime accumulation.
Therefore, the heater should be delimed once a year.
5. Close the cold water inlet valve to the water heater.
example 2:
6. Connect a hose to the water heater drain valve and terminate
Initial inspection after 6 months shows 2" of lime accumulation.
Therefore, the heater should be delimed every 3 months.
it to an adequate drain.
7. Open the water heater drain valve and allow all the water to
drain from the storage tank.
8. Close the water heater drain valve when all water in the
storage tank has drained.
9. Close the hot water faucet opened in Step 4.
10. If the water heater is going to be shut down for an extended
period, the drain valve should be left open.
to flush the water heater storage tank:
1. Turn off the electrical supply to the water heater.
2. ensure the cold water inlet valve is open.
3. Open a nearby hot water faucet and let the water run until
the water is no longer hot. Then close the hot water faucet.
4. Connect a hose to the drain valve and terminate it to an
adequate drain.
5. ensure the drain hose is secured before and during the
entire flushing procedure. Flushing is performed with system
water pressure applied to the water heater.
6. Open the water heater drain valve to flush the storage tank.
7. Flush the water heater storage tank to remove sediment and
allow the water to flow until it runs clean.
figure 26.
8. Closethewaterheaterdrainvalvewhenflushingiscompleted.
9. remove the drain hose.
deliming solVents
10. Fill the water heater - see FillingThe Water Heater in this manual.
uN•lIMe is recommended for deliming. uN•lIMe is a patented
food grade acid which is safe to handle and does not create the
harmful fumes which are associated with other products.
11. Turn on the electrical supply to place the water heater back
in operation.
12. Turn on the gas supply to the water heater at the Main Gas
Shutoff Valve.
uN•lIMe may be obtained from your dealer, distributor or water
heater manufacturer. Order Part Number 9005416105, 1 gallon,
packed 4 gallons per case or Part Number 9005417105, 5 gallon
container.
13. Allow the water heater to complete several heating cycles to
ensure it is operating properly.
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NOTe: un•lime is not available for use in Canada.
Hydrochloric base acids are not recommended for use on glass
lined tanks.
Chemical Hazard
Observe handling instructions on label of product being used.
• Product contains phosphoric acid.
• Keep out of reach of children.
• Use rubber or neoprene gloves.
tank Cleanout proCedure
The following practices will ensure longer life and enable the unit
to operate at its designed efficiency:
1. Once a month the heater should be flushed. Open the drain
valve and allow two gallons of water to drain from the heater.
Inlet water valve should remain open to maintain pressure
in tank.
Contains phosphoric acid. In case of external contact, flush with
cool water. If irritation persists, get medical attention. If swallowed,
give 1 or 2 glasses of water or milk and call physician.
2. A cleanout opening is provided for periodic cleaning of
the tank. Gas must be shut off and heater drained before
opening cleanout.
Get immediate medical attention for eyes. Keep out of reach of
children.
note: the use of ruBBer or neoprene gloVes is
reCommended, espeCially if you haVe any open
sores or Cuts to aVoid unneCessary irritation
or disComfort.
To clean heater through cleanout opening, proceed as follows:
3. Drain heater.
4. remove outer cover plate from lower side of heater jacket.
1. Turn off fuel and/or power supply to heater. Also, turn off
power to any electrical device or equipment, which is
attached, or part of the system.
5. remove six (6) hex head screws securing tank cleanout
plate and remove plate.
6. remove lime, scale, or sediment using care not to damage
2. Open hot water side of faucet closest to heater and allow
water to run until it is cool enough to handle safely.
the glass lining.
7. Inspect cleanout plate gasket, if new gasket is required,
3. Close cold water inlet valve to heater.
replace with part no. 9004099215.
4. Connect hose to drain valve at bottom of heater and start
draining heater into suitable floor drain area.
8. Install cleanout plate. be sure to draw plate up tight by
tightening screws securely.
5. remove relief valve while heater is draining. NOTe: Do not
replace relief valve until deliming is completed. relief valve
opening will also act as a vent in case of possible contact
between the delimer and the anode rod(s), which may
produce flammable hydrogen-air mixtures.
9. replace outer jacket cover plate.
In some water areas the sediment might not be removed
by this method and may result in the water heater making
rumbling or boiling noises. To dissolve and remove these more
stubborn mineral deposits, uN•lIMe Professional Delimer
should be used.
6. If relief valve appears to be limed-up, place it in a clean glass or
plastic container adequate in size so that you can pour enough
uN•lIMe® into the container to cover the valve and allow
space for foaming. When foaming stops, run fresh cool water
into the container and rinse the relief valve for a few minutes.
deliming using flo-jug method
uN•lIMe in the 5 gallon size is recommended for deliming of
all models. Contact your local dealer, distributor or water heater
manufacturer.
7. If heater does not drain completely after a reasonable length
of time, turn off the main water supply valve to stop water
from entering the tank due to a by-pass problem or defective
cold water inlet valve. Also, check for clogged drain valve
opening. Heater must be completely drained before
introducing uN•lIMe.
Prepare the Water Heater
To delime the water heater using the Flo-Jug method, first
prepare the heater for deliming.
8. remove the cleanout cover and place a clean plastic bucket
next to the cleanout opening.
Partially open the cold water inlet valve to allow time to
accomplish the following and then close the valve.
Explosion Hazard
While the water is being run through the tank, insert a stiff
wire, copper tube flattened at one end or an opened wire coat
hanger through the cleanout opening and scrape out any
loose deposits of scale or sediment. This is an economical
way to avoid unnecessary usage of the deliming solution.
Flammable hydrogen gases
may be present.
Keep all ignition sources away
from faucet when turning on
hot water.
repeat the opening and closing of the cold water inlet valve
as necessary but be sure the heater is completely drained
when ready to introduce the uN•lIMe.
upon completion, reinstall the cleanout cover and use a new
cleanout cover gasket (part number 9004099215).
Do not smoke or have open flame or sparks in vicinity of heater.
Do not mix uN•lIMe with other chemicals. Do not allow contact
with magnesium, aluminum or galvanized metals.
remove the drain valve.
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9. Install the long plastic male adapter insert fitting into the
drain valve opening of heater after applying Teflon tape or
paste to threads. Tighten firmly by hand and use wrench or
adjustable pliers to check for secure connection. Do not over
tighten to avoid damage to threads and fittings.
and pour the uN•lIMe into the heater.
7. lower container, you may have to place the container on
its empty carton to prevent the uN•lIMe from flowing back
into the container.
8. let uN•lIMe remain in the heater for 5 minutes and then
Prepare the up-N-Down Transfer Kit
lower the container to the “Drain” Position, see Figure 27.
The next step is the preparation on the up-N-Down Transfer Kit,
if you have not already done so:
9. Deliming activity is indicated by foaming on the surface of the
uN•lIMe. If there is deliming activity, repeat steps 6 thru 8.
1. With the 5 gallon up-N-Down container in the vertical
position, unscrew the plastic vent cap in the handle and
pierce the plastic membrane over the vent boss under the
cap to allow the container to vent.
Normally, lime removal will be completed within one hour. Severe
build-upoflimemaytakelongerthananhourtocompletedescaling.
note: To check uN•lIMe for continued use, place some scale
or white chalk in a glass with a small amount of uN•lIMe. If
the material is vigorously dissolved by the uN•lIMe, it can be
reused; if not, the uN•lIMe should be replaced.
note: If your container does not have the vent cap and
vent boss, drill a 3/16” hole in the handle. When you have
finished deliming you will be able to plug this drilled vent with
the stainless steel screw that is supplied with the kit.
2. remove the container’s cap and cut the plastic membrane
located in the 3/4” IPT opening in the cap. Take care to not
damage the threads.
3. Find the 3/4” male adapter, apply teflon tape to the threaded
end and screw it into the 3/4” IPT opening in the cap.
4. Put cap with male adapter back on the container and slide
3/4” hose over end of male adapter and fasten in place using
hose clamp provided.
Delime using Flo-Jug Method
5. Slide the hose clamp over end of hose and slide hose over
the male adapter in the water heater drain opening and
secure in place using hose clamp.
6. lift container to the “Pour” Position, see Figure 27, being
figure 27.
careful to keep the vent in the handle above the liquid level
serViCe
The installer may be able to observe and correct certain problems
which may arise when the unit is put into operation. HOWeVer,
it is recommended that only a qualified service agency, using
appropriate test equipment, be allowed to service the heater.
system diagnostiCs
your water heater is equipped with an ignition control that
incorporates a diagnostic system to assist in troubleshooting
the appliance. The indicator codes on the ignition module are
as follows:
As preliminary step, check wiring against diagram, check for
grounded, broken or loose wires. Check all wire ends to be sure
that they are making good contact.
taBle 9.
ignition Control system
2 FlASHeS Flame sensed without call for heat
3 FlASHeS Ignition lockout
before calling your qualified service agency, the following
checklist should be examined to eliminate obvious problems
from those requiring replacement or servicing.
Steady On Internal control failure
• Check that “main gas shutoff valve” is fully open and that gas
service has not been interrupted.
If an internal control failure is indicated, replace the ignition
control.
• Check electrical supply to the appliance for possible blown
(or tripped) fusing or power interruption. Also check the 3 amp
fuse on the front of the digital thermostat (Fig. 2).
use
this
diagnostic
system
in
conjunction
with
“TrOubleSHOOTING”andthe“SequeNCeOFOPerATION”
to troubleshoot the appliance.
• Is the water temperature in tank below the thermostat dial
setting on the appliance thermostat (calling for heat)?
eleCtriCal serViCing
lAbel All WIreS PrIOr TO DISCONNeCTION WHeN
SerVICING CONTrOlS. WIrING errOrS CAN CAuSe
IMPrOPer AND DANGerOuS OPerATION.
• It is possible that the high limit (e.C.O.) has functioned to shut
off the appliance. See page 7 - High limit Switch for reset
procedure. Contact your service agent if limit continues to
function to shut off appliance.
VerIFy PrOPer OPerATION AFTer SerVICING.
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for your information
Contact the local water heater supplier or service agency for
further information concerning an Anode replacement Kit and
start up Conditions
this chlorination treatment.
smoke/odor
It is not uncommon to experience a small amount of smoke and
odor during the initial start-up. This is due to burning off of oil
from metal parts, and will disappear in a short while.
Ifhotwaterodorpersistsafteranodereplacementandchlorination
treatment, we can only suggest that chlorination or aeration of
the water supply be considered to eliminate the water problem.
strange sounds
Do not remove the anode leaving the tank unprotected. by doing
Possible noises due to expansion and contraction of some metal
parts during periods of heat-up and cool-down do not necessarily
represent harmful or dangerous conditions.
so, all warranty on the water heater tank is voided.
“air” in hot water fauCets
HyDrOGeN GAS: Hydrogen gas can be produced in a hot
water system that has not been used for a long period of time
(generally two weeks or more). Hydrogen gas is extremely
flammable and explosive. To prevent the possibility of injury
under these conditions, we recommend that the hot water
faucet located farthest away from the water heater be opened
for several minutes before any electrical appliances which
are connected to the hot water system are used (such as a
dishwasher or washing machine). If hydrogen gas is present,
there will probably be an unusual sound similar to air escaping
through the pipe as the hot water faucet is opened. There
must be no smoking or open flame near the faucet at the time
it is open.
Condensation causes sizzling and popping within the burner area
during heating and cooling periods and should be considered
normal.
operational Conditions
hot water odor
In each water heater there is installed at least one anode rod
for corrosion protection of the tank. Certain water conditions
will cause a reaction between this rod and the water. The most
common complaint associated with the anode rod is one of a
“rotten egg smell” in the hot water. The smell is a result of four
factors which must all be present for the odor to develop:
a. A concentration of sulfate in the supply water.
high water temperature shut off system
This water heater is equipped with a manual reset type high
limit (energy Cutout) switch. The high limit switch interrupts
the main burner gas flow should water temperature reach
203°F (95°C).
b. little or no dissolved oxygen in the water.
c. A sulfate reducing bacteria which has accumulated within the
water heater (this harmless bacteria is nontoxic to humans).
d. An excess of active hydrogen in the tank. This is caused by
the corrosion protective action of the anode.
In the event of high limit switch operation, the water heater
cannot be restarted unless the water temperature is reduced to
approximately 120°F (49°C). The high limit reset button on the
front of the thermostat then needs to be depressed. See Figure 2
for the location of the reset button.
Hot water odor may be eliminated or reduced in some water
heater models by replacing the anode(s) with one of less active
material, and then chlorinating the water heater tank and all
water lines.
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trouBleshooting
remedy
Qualified serViCe agenCy
Complaint
Cause
user
*Water not hot enough
Thermostat set too low.
Set thermostat dial to a higher
temperature
upper and/or lower temperature Call qualified service agency
probe out of calibration.
Check continuity and resistance (Ohms)
of upper and lower temperature probes.
replace probes if out of specification.
*Insufficient hot water
Thermostat set too low.
Set thermostat dial to a higher
temperature
*See WATer TeMPerATure
CONTrOl WArNING (on page
12).
upper and/or lower temperature Call qualified service agency
Check continuity and resistance (Ohms)
of upper and lower temperature probes.
replace probes if out of specification.
probe out of calibration.
Main manual gas shutoff valve
partially closed.
Open main manual gas shutoff
valve to fullest extent.
Heater too small for demand.
Space usage to give heater time
to restore water temperature.
Heater recovery is slower.
Call qualified service agency
Check gas input. If incorrect, check
for inlet air blockage and/or flue gas
exhaust blockage.
Water temperature too hot.
Thermostat set too high.
Set thermostat to a lower setting.
rumbling.
Sediment accumulation on
bottom of tank.
Drain a quantity of water through Delime heater.
drain valve. If rumbling persists,
call a qualified service agency.
Ticking or metallic sounds.
Pounding or water hammer.
expansion and contraction -
normal.
Air chambers in piping have
become waterlogged. Thermal
expansion tank damaged,
improperly charged, or
improperly sized.
Drain piping system and refill.
Heater must be off while this
is being done. Check thermal
expansion tank charge pressure
when the water system pressure
is zero.
Follow the manufacturer's instructions
for proper charging of the thermal
expansion tank.
Water leaks.
Gas odors.
Drain valve not closed tightly.
If drain valve cannot be closed
tightly, replace.
If leakage source cannot be
corrected or identified, call
qualified service agency.
Shut off gas supply to heater
and close cold water inlet valve
to heater.
repair or in case of suspected tank
leakage, be certain to confirm before
replacing heater.
Possible gas leaks.
Shut off gas supply to heater
and call gas company at once
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water piping diagrams
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STORAGE TANK
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STORAGE TANK
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MODel
DIMeNSION "A"
Sbl95 199Ne
Sbl85 275Ne(A)
Sbl85 390Ne(A)
76
76
76
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notes
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limited warranty
limited warranty
State Water Heaters, the warrantor, extends the following lIMITeD WArrANTy to the owner of this water heater.
1. THe TANK
If the glass-lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable water therein,
during the first THree years after initial installation, the warrantor will supply a replacement tank less burner and controls or a complete new State water heater
of equivalent size and current model at the warrantor's option. Some government agencies are requiring energy efficient standards for water heaters. In the
event regulations prohibit sale of a model of equivalent size and construction, State will provide a model which complies with the regulations of your area, in
which case the consumer will be charged the difference in price between the like replacement and the energy efficient model required. The warranty on the
replacement water heater will be limited to the unexpired term of the original warranty.
2. All OTHer PArTS
If within ONe year after initial installation of this water heater, any part or portion shall prove upon examination by the warrantor to be defective in material or
workmanship, the warrantor will repair or replace such part or portion at its option.
3. CONDITIONS AND eXCePTIONS
This warranty shall apply only when the water heater is installed in accordance with local plumbing and building codes, ordinances and regulations, the printed
instructions provided with it and good industry practices. In addition, a temperature and pressure relief valve, certified by CSA and approved by the American
Society of Mechanical engineers, must have been installed.
a. This warranty shall apply only when the water heater is:
(1) owned by the original purchaser;
(2) used at temperatures not exceeding the maximum setting of its thermostat;
(3) used at water pressure not exceeding the working pressure shown on the heater;
(4) used when operated free of the damaging effects of uncontrolled water hammer;
(5) used when filled with potable water, free to circulate at all times;
(6) used in a non-corrosive and non-contaminated atmosphere;
(7) used with factory approved anode(s) installed;
(8) in its original installation location;
(9) in the united States, its territories or possessions, and Canada;
(10) sized in accordance with proper sizing techniques for commercial water heaters;
(11) bearing a rating plate which has not been altered, defaced or removed except as required by the warrantor;
(12) fired at the factory rated input using the fuel stated on the rating plate;
(13) maintained in accordance with the instructions printed in the manual included with the water heater.
b. Any accident to the water heater, any misuse, abuse (including freezing) or alteration of it, any operation of it in a modified form, or any attempt
to repair tank leaks will void this warranty.
c. This warranty is void if a device acting as a backflow prevention device (check valves etc.) is installed in the cold water supply the heater is
connected to, unless an effective method of controlling thermal expansion is also installed at the heater(s) and operational at all times.
The temperature and pressure relief valve installed on the heater is not an acceptable method.
4. SerVICe AND rePAIr eXPeNSeS
under the limited warranty the warrantor will provide only a replacement water heater or part thereof. The owner is responsible for all other costs. Such costs
may include but are not limited to:
a. labor charges for service removal, repair or reinstallation of the water heater or any component part;
b. Shipping, delivery, handling, and administrative charges for forwarding the new heater or replacement part from the nearest distributor and returning
the claimed defective heater or part to such distributor.
c. All cost necessary or incidental for any material and/or permits required for installation of the replacement.
5. lIMITATIONS ON IMPlIeD WArrANTIeS
Implied warranties, including the warranty of merchantability imposed on the sale of this heater under state law are limited to one (1) year duration for the heater
or any of its parts. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.
6. ClAIM PrOCeDure
Any claim under the warranty should be initiated with the dealer who sold the water heater, or with any other dealer handling the warrantor’s
products. If this is not practicable, the owner should contact:
u.S. Customers
State Water Heaters
500 Tennessee Waltz Parkway
Ashland City, TN 37015
Telephone: 1-(800)-365-0024
a. The warrantor will only honor replacement with identical or similar water heater or parts thereof which are manufactured or distributed by the warrantor.
b. Dealer replacements are made subject to in-warranty validation by warrantor.
7. DISClAIMerS
NO OTHer eXPreSS WArrANTy HAS beeN Or WIll be MADe IN beHAlF OF THe WArrANTOr WITH reSPeCT TO THe MerCHANTAbIlITy
OF THe HeATer Or THe INSTAllATION, OPerATION, rePAIr Or rePlACeMeNT OF THe WATer HeATer. THe WArrANTOr SHAll NOT be
reSPONSIble FOr WATer DAMAGe, lOSS OF uSe OF THe uNIT, INCONVeNIeNCe, lOSS Or DAMAGe TO PerSONAl PrOPerTy Or OTHer
CONSequeNTIAl DAMAGe. THe WArrANTOr SHAll NOT be lIAble by VIrTue OF THIS WArrANTy Or OTHerWISe FOr DAMAGe TO ANy
PerSONS Or PrOPerTy, WHeTHer DIreCT Or INDIreCT, AND WHeTHer ArISING IN CONTrACT Or TOrT.
a. Some states do not allow the exclusion or limitation of the incidental or consequential damage, so the above limitations or exclusions may not apply to you.
b. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Fill in the following for your own reference. Keep it. registration is not a condition of warranty. The model and serial number are found on the heater’s rating plate.
Date Installed________________________Model No.____________________________________________Serial No._________________________________________
Dealer’s Name _____________________________________________________________________Phone No.________________________________________________
Dealer’sAddress__________________________________________________City and State________________________________________Zip Code________________
fill in warranty and keep for future referenCe.
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www.statewaterheaters.com
500 Tennessee Waltz Parkway, Ashland City, TN 37015
Tech Support: 800-527-1953
Parts: 800-433-2545
Copyright © 2012 State Water Heaters, All rights reserved.
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