GB100IOM-7
GB100W
NATURAL OR PROPANE GAS BOILER
INSTALLATION & OPERATING
INSTRUCTIONS
DESIGNED AND TESTED ACCORDING TO A.S.M.E. BOILER AND PRESSURE
VESSEL CODE, SECTION IV FOR MAXIMUM ALLOWABLE WORKING PRESSURE OF
50 PSI, 345 kPa WATER
NOTE TO INSTALLING CONTRACTOR: READ THESE INSTRUCTIONS CAREFULLY.
THEY WILL SAVE YOU TIME IN ASSEMBLING BOILER PROPERLY.
WARNING: Installation and service must be performed by a qualified installer, service
agency or the gas supplier in accordance with all local and national codes. Failure to
comply with this warning can result in a fire or explosion causing property damage,
personal injury or loss of life!
WARNING: If the information in this manual is not followed
exactly, a fire or explosion may result causing property damge,
personal injury or loss of life.
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.
Installation and service must be performed by a qualified installer,
service agency or the gas supplier.
INSTALLER, THESE INSTRUCTIONS TO BE AFFIXED ADJACENT TO THE BOILER.
CONSUMER, RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE PURPOSES.
WESTCAST, INC.
260 NORTH ELM STREET WESTFIELD, MA 01085
TEL. (413) 562-9631 FAX (413) 562-3799
In Canada: 7555 Tranmere Drive, Mississauga, Ont. L5S 1L4 (905) 672-2991 Fax (905) 672-2883
Page 3
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Direct all questions to your Smith Cast Iron Boiler
BOILER LOCATION
distributor or write to the Customer Service Department,
260 North Elm Street, Westfield, MA 01085. Always
include the model and serial numbers from the rating
plate of the boiler in question.
WARNING: This boiler is for installation on non-
combustible floors only! A special base
supplied by the manufacturer must be used to
install this boiler on a combustible floor. Failure
to comply with this warning can result in
property damage, severe personal injury or
death!
The owner should maintain a record of all service work
performed with the date and a description of the work
done. Include the name of the service organization for
future reference.
1. Locate the boiler in an area that provides good
access to the unit. Keep in mind that servicing may
require the removal of jacket panels. Accessibility
clearances must take precedence over fire
protection clearances.
Where required by the authority having jurisdiction, the
installation must conform to the Standard for Controls
and Safety Devices for Automatically Fired Boilers,
ANSI/ ASME CSD-1.
The installation must conform to the requirements of
the authority having jurisdiction or, in the absence of
such requirements, to the National Fuel Gas Code,
ANSI Z223.1/NFPA 54-latest revision. In Canada,
installation must be in accordance with the requirements
of CAN/CGA B149.1 or 2 Installation Code for Gas
Burning Appliances and Equipment.
2. An optimum site will be level, central to the piping
system, close to a chimney and have adequate
fresh air for combustion.
3. Ensure that the floor is structurally sound and will
support the weight of the boiler. This boiler is
designed for non combustible floors only! A special
base supplied by Smith Cast Iron Boilers must be
used if the boiler is to be installed on a combustible
floor. NEVER USE A SUBSTITUTE BASE ON A
COMBUSTIBLE FLOOR! Never install this boiler on
carpeting!
BOILER RATINGS AND CAPACITIES
Before undertaking the installation of the GB100W
check the boiler rating plate to ensure that the boiler is
the proper size for the job. The “Net I=B=R Ratings”
specify the equivalent amount of direct cast iron
radiation that the boiler can handle under normal
conditions. Also ensure that the boiler has been set up
for the type of gas available at the installation site.
Other important considerations are the availability of
an adequate electrical supply, fresh air for combustion
and a suitable chimney or vent system.
4. DO NOT install this boiler in a location that would
subject any of the gas ignition components to direct
contact with water or excessive moisture during
operation or servicing.
5. DO NOT place this boiler in a location that would
restrict the introduction of combustion air into the
boiler. NEVER store objects on or around the boiler.
NOTES:
1. For altitudes above 2000 ft, 610 m, ratings should
be reduced at the rate of 4% for each 1000 ft, 305
m above sea level, 10% in Canada.
2. If ordering a boiler for use with LP gas add a P to
the model number, ie PGB100.
WARNING: Never store combustible materials,
gasoline or any product containing flammable
vapors or liquids in the vicinity of the boiler.
Failure to comply with this warning can result in
extensive property damage, severe personal
injury or death!
Page 4
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
6. If the boiler is to be located in an alcove, closet or
other confined space the distances from the boiler
and it’s vent system to all combustible construction
must be equal to or greater than the minimum
clearances in Figure 1. When installed in a closet or
confined space two permanent openings of equal
area adjoining another room or rooms having
sufficient volume to meet the requirements of an
unconfined space must be provided. Each opening
must have a minimum free area of one square inch
per 1000 Btu/hr, 2200 mm2/kW based on the total
input rating of all gas utilization equipment in the
confined area. Each opening must be no less than
100 in2, 64516 mm2, in size. The upper opening
must be within 12 in, 305 mm, of, but not less than
3 in, 76 mm, from the top of the enclosure. The
bottom opening must be within 12 in, 305 mm, of,
but not less than 3 in, 76 mm, from the bottom of the
enclosure.
WARNING: Never install a PGB100W, propane
boiler in a closet or other confined or enclosed
spaceunless the installation conforms to the
latest revision of the National Fuel Gas Code,
ANSI Z223.1 and all applicable local building
codes! Failure to comply with this WARNING
could result in a fire or explosion causing
extensive property damage, severe personal
injury or death!
Figure 1: Clearances to Combustible Construction
C
TO
COMBUSTIBLE
MATERIAL
A
*
E
F
D
B
FRONT
For
AL
CL
Servicing
in
in
24
*
mm
610
*
in
51
2
mm
1295
51
mm
N/A
N/A
152
102
254
254
A
B
C
D
E
F
N/A
N/A
6
6
152
102
178
102
6
152
102
178
102
4
4
4
7
7
10
10
4
4
AL = Alcove
CL = Closet
*No Front Wall in Alcove
Page 5
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Figure 2: Special Base Installation on
Combustible Flooring
COMBUSTIBLE FLOOR OPTION
The GB100W boiler has been designed for use on
noncombustible floors only. If a GB100W boiler is to
be installed on combustible flooring of any type, it MUST
be installed using the Special Base designed by the
Smith Cast Iron Boiler Co. Do NOT use any base other
than the one specifically designed for it if installing a
GB100W boiler on combustible flooring.
WARNING: Never install a GB100W boiler on
combustible flooring without using the special
base specifically designed for it by the Smith
Cast Iron Boiler Co. Do not alter in any way the
special base supplied by the Smith Cast Iron
Boiler Co. Failure to comply with this warning
may result in a fire causing property damage,
personal injury or death!
To order the Special Base contact the nearest
Smith Cast Iron Boiler distributor and ask for the
“Noncombustible Floor Pan”.
Determine where the boiler will be located by following
the instructions in the Boiler Location section of this
manual. Place the Special Base in this location and
fasten it in place to prevent it from moving while the
boiler is being placed on it.
SUPPORT
CHANNEL
FRONT
GRILL
If the GB100W is being installed in an alcove or closet
ensure that the minimum distance to combustible
construction requirements, listed in Figure 1, are met.
Remove the sheet metal base pan attached to the
boiler. Position the boiler in front of the Special Base. It’s
suggested that two lengths of 3" pipe the width of the
boiler, or longer, be placed under the boiler base side
panels.
COMBUSTION AIR
WARNING: This boiler must be supplied with
combustion air in accordance with Section 5.3,
Air for Combustion & Ventilation, of the latest
revision of the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 and all applicable local building
codes. Failure to provide adequate combustion
air for this appliance can result in excessive
levels of carbon monoxide which can result in
severe personal injury or death!
CAUTION: Be careful not to damage the burners,
pilot assembly or any other gas train components
during this procedure. If a component is damaged,
replace it!
Carefully roll the boiler up to the front of the Special
Base. Align the boiler base side panels with the Special
Base support channels. Using great care, slide the boiler
onto the Special Base.
Table 1: Vent and Chimney Dimensions
Boiler Size
3
4
5
6
7
8
9
10 11 12
(Sections)
Vent Pipe
Dia. (In.)
CAUTION: Never lift the boiler by the jacket panels
or flue collector/draft diverter or severe damage to
the boiler may result!
5
5
6
6
7
7
8
8
9
9
Chimney
Flue Size
Chimney
Height (Ft.)
8 x 8
8 x 12
Center the boiler from side to side on the Special Base.
Ensure that the back of the burner base side panels
are flush with the back of the Special Base support
channels. Install the front grill supplied with the Special
Base. Complete the installation in accordance with the
instructions set forth in this manual.
18 18 18 17 17 17 16 16 16 16
Page 6
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
To operate properly and safely this boiler requires a
continuous supply of air for combustion. Oxygen is used
by the burners in the boiler to burn the gas. In addition,
air is also used to assist in the safe disposal of the
products of combustion. This air is known as dilution
air and mixes with the products of combustion to assist
in it’s exit through the flue pipe and chimney. An
adequate supply of outside air must be available to
replace that used by these processes.
WARNING : If an appliance using any type of a
mechanical draft system operating under
positive pressure is connected to a chimney
flue, never connect any other appliances to this
flue. Doing so can result in the accumulation of
carbon monoxide which can cause severe
personal injury or death!
Older houses often have enough “leakage” to provide VENT CONNECTIONS
an adequate amount of combustion air provided that
the demand for combustion air is not too great. Homes
that are relatively new or “tight” will most likely require
the installation of a fresh air duct or other means of
providing air for combustion. Any home utilizing other
gas burning appliances, a fireplace, wood stove or any
type of exhaust fan must be checked for adequate
combustion air when all of these devices are in operation
at one time. Sizing of an outside air duct must be done
to meet the requirements of all such devices.
Always use a type B or C vent pipe of the proper
diameter for the boiler. Use the shortest, straightest
vent system possible for the particular application. The
vent system should be sloped up toward the chimney
at a rate of 1/4 in/ft, 2 mm/m. Ensure that the flue pipe
is properly supported and each connection securely
fastened with at least 3 corrosion resistant sheet metal
screws. The termination of the vent pipe should be
flush with the inside of the chimney flue.
Always provide a minimum clearance of 6 in, 152 mm,
between type C vent pipe and any combustible
materials. Type B1 vent may be used, clearance
between it and any combustible material must be as
listed.
Table 2: Combustion Air Duct Sizing
Input Btuh
1/4" Wire
Mesh Screen
Input Btuh
Metal
Louvers
Input Btuh
Wooden
Louvers
Fresh Air
Duct Size
3" x 12"
8" x 8"
144,000
256,000
384,000
512,000
108,000
192,000
288,000
384,000
36,000
64,000
96,000
128,000
WARNING: Failure to maintain minimum
clearances between vent connectors and any
combustible material can result in extensive
property damage, severe personal injury or
death!
8" x 12"
8-1/2" x 16"
If the boiler will be located in an alcove, closet or any
confined space refer to item 6 in the Boiler Location
section of this manual.
WARNING: Never modify or alter any part of the
draft hood or vent damper supplied with this
boiler. This includes the removal or alteration of
any baffles in the draft hood or flue collar.
Never install a vent pipe of a diameter different
than that of the boiler draft hood flue collar,
table 1. Failure to comply with this warning can
result in severe personal injury or death.
CHIMNEY & VENT PIPE CONNECTIONS
WARNING: This boiler must be vented in
accordance with Part 7, Venting of Equipment, of
the latest revision of the National Fuel Gas code,
ANSI Z223.1/NFPA 54 and all applicable local
building codes. Improper venting of this
appliance can result in excessive levels of
carbon monoxide which can result in severe
personal injury or death!
Common Vent Systems
If an existing appliance is removed from a common
venting system, the common venting system may then
be too large for the proper venting of the remaining
appliances connected to it. At the time of removal of
an existing boiler, the following steps shall be followed
with each appliance remaining connected to the
common venting system placed in operation, while the
other appliances remaining connected to the common
venting system are not in operation.
Chimney Inspection & Sizing
If this boiler will be connected to a masonry chimney, a
thorough inspection of the chimney must be performed.
Ensure that the chimney is clean, properly constructed
and properly sized. Table 1 lists the flue size and
chimney height required for this boiler.
Au moment du retrait d'une chaudière existante, les
mesures suivantes doivent être prises pour chaque
appareil toujours raccordé au système d'évacuation
commun et qui fonctionne alors que d'autres appareils
toujoursraccordésausystèmed'évacuationnefonction-
nent pas: système d'évacuation.
When more than one appliance is connected to the
same chimney flue, the flue must be large enough to
handle both appliances.
The vent installation must be in accordance with Part 7
of the latest revision of the National Fuel Gas Code,
ANSI Z223.1/NFPA 54.
Page 7
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
f) After it has been determined that each appliance
a) Sealallunusedopeningsinthecommonventsystem
and repair any leaks.
remaining connected to the common venting system
properly vents when tested as outlined above, return
doors, windows, exhaust fans, fireplace dampers
and any other gas-burning appliance to their previ-
ous condition of use.
Sceller toutes les ouvertures non utilisées du sys-
tème d'évacuation.
b) Visually inspect the vent system to ensure that it is
properly pitched and sized and that there are no
structural deficiencies such as blockages, restric-
tions, leakage, or corrosion that could cause an
unsafe condition.
Une fois qu'il a été d éterminé, selon la métode
indiquée ci-dessus, que chaque appareil raccordé
au système d'évacuation est mis à l'air libre de façor
adéquate. Remettre les portes et les fenêtres, les
ventilateurs, les registres de cheminées et les
appareils au gaz à leur position originale.
Inspecter de façon visuelle le système d'évacu-ation
pourdéterminerlagrosseretl'inclinaisonhorizontale
qui conviennent et s'assurer que le système est
exempt d'obstruction, d'étranglement de fruite, de
corrosion et autres défaillances qui pourraient
présenter des risques.
g) Any improper operation of the common venting sys-
tem should be corrected so the installation conforms
with the National Fuel Gas Code, ANSI Z223.1/
NFPA 54. When resizing any portion of the common
venting system, the common venting system should
be resized to approach the minimum size as deter-
mined using the appropriate tables in Appendix F in
the National Fuel Gas Code, ANSI Z223.1/ NFPA 54
and or CSA B149 Installation Codes.
c) As far as is practical close all doors and windows
common to the space in which the vent system and
appliances connected to the common vent system
are contained. Turn on all exhaust fans, clothes
dryers, range hoods and appliances requiring air for
combustion that are not connected to the common
vent system. Ensure that all appliances operate at
maximum speed. Do not operate a summer exhaust
fan. Close all fireplace dampers.
Tout mauvais fonctionnement du systéme d'évacu-
tion commun devrait étré corrigé de façor que
l'installation soit conforme au National Fue Gas
Code, ANSI Z223.1/NFPA 54 et (ou) aux codes d'in-
stallationCSA-B149. Silagrosseurd'unesectiondu
système d' évacuation doit étré modifiée, le système
devrait étré modifié pour respecter les valeurs
minimales des tableaux pertinents de l'appendice F
du National Fuel Gas Code, ANSI Z223.1/ NFPA 54
et (ou) des codes d'installation CSA-B149.
Dans la mesure du possible, fermer toutes les portes
et les fenêtres du bâtiment et toutes les portes entre
l'espace où les appareils toujours raccordés du
système d'évacuation sont installés et les autres
espaces du bâtiment. Mettre en marche les
sécheuses, tous les appareils non raccordés au
systèmed'évacuationcommunettouslesventilateurs
d'extraction comme les hottes de cuisinère et les
ventilateurs des salles de bain. S'assurer que ces
ventilateurs fonctionnent à la vitesse maximale. Ne
pas faire fonctionner les ventilateurs d'été. Fermer
les registres des cheminées.
Vent Dampers
This boiler comes from the factory equipped with a
vent damper specifically engineered for it. The vent
damper must be properly installed to obtain the high
performance for which this boiler was designed. If the
damper is damaged or missing do not install the boiler
without it! Contact the nearest Smith Cast Iron Boilers
distributor to obtain the proper vent damper.
d) Place in operation the appliance being inspected.
Follow the lighting instructions. Adjust thermostat so
appliance will operate continuously.
WARNING: On boilers with a constant pilot
ignition system, ensure that the hole in the
damper blade is not plugged. Failure to do this
could result in the spillage of carbon monoxide
which can result in severe personal injury!
Mettre l'appareil inspecté en marche. Suivre les
instructions d'allumage. Régler le thermostat de
façon que l'appareil fonctionne de façon continue.
e) Test for spillage at the draft hood relief opening after
5 minutes of main burner operation. Use the flame of
a match or candle, or smoke from a cigarette, cigar or
pipe.
Vent dampers are designed for use with only one
appliance. NEVER connect more than one appliance
to a single vent damper.
Locate the vent damper so that it is accessible and the
damper position indicator is visible. Maintain a minimum
of 6 inches between the damper and any combustible
materials!
Faire fonctionner le brûleur principal pendant 5 min
ensuite, déterminer si le coupe-tirage déborde à
l'ouverture de décharge. Utiliser la flamme d'une
allunette ou d'une chandelle ou la fumée d'une ciga-
rette, d'un cigare ou d'une pipe.
Page 8
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Fasten the vent damper to the flue collar and vent pipe
Figure 4: Heating System Piping
using at least 3 corrosion resistant sheet metal screws
per joint. Connect the damper harness to the top panel
with the BX connector supplied. Plug the Molex
connector on the damper harness into the mating plug
on the harness located inside the control compartment.
DISCHARGE PIPE
SUPPORT DISCHARGE PIPING
SO AS TO AVOID STRAIN ON
THE VALVE BODY.
SIZE TO EQUAL
VALVE OUTLET.
DO NOT RESTRICT
FLOW.
FOR DISCHARGE
THROUGH ROOF
CONSULT THE
SMITH CO.
The vent damper is operating properly when it opens
completely upon a call for heat and closes completely
when the call for heat ends. The vent damper must be
in the open position when the boilers main burners are
in operation.
1" CLEARANCE MUST BE
MAINTAINED BETWEEN
HOT WATER PIPING
AND COMBUSTIBLE
CONSTRUCTION.
Figure 3: Vent Damper Location
DAMPER BLADE POSITIONED
FRONT TO BACK OF BOILER
MOTOR TO FACE
FRONT OF BOILER
DISCHARGE SO AS TO AVOID EXPOSURE OF PERSONS TO
HOT LIQUID OR VAPOR. LEAVE OPEN END VISIBLE FOR
PERIODIC INSPECTION FOR SLOW LEAKAGE OR DRIPS.
FRONT OF
BOILER
HEATING SYSTEM PIPING
CAUTION: All piping must be installed by a qualified
technician in accordance with the provisions set
forth in the applicable ANSI/ASME standards and
local building codes and regulations. Improper
piping of this boiler can cause flooding, extensive
property damage, heating system damage or
damage to the boiler.
The GB100W hot water boiler comes from the factory
ready to be piped to the heating system. Each boiler is
equipped with a safety relief valve. This valve must be
piped in accordance with the ANSI/ASME Boiler and
Pressure Vessel Code, Section IV. Figure 4 provides a
pictorial description of the boiler and piping components.
Page 9
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
The boiler should be placed in the location selected for
Figure 5: TACO 007 Performance Curve
it. Refer to the BOILER LOCATION section in this
manual. Ensure that the boiler is level from front to
back and from side to side. Use metal shims to level
the boiler. NEVER use wood, plastic or other
combustible materials as shims.
10
8
6
All heating system piping must be installed in
accordance with the ANSI/ASME Boiler and Pressure
Vessel Code, Section IV, and ANSI/ ASME CSD-1,
Standard for Controls and Safety Devices for
Automatically Fired Boilers. All applicable local codes
and ordinances must also be followed.
4
TACO 007 CIRCULATOR
PERFORMANCE CURVE
If the boiler is installed above any radiation elements it
must be fitted with a low water cutoff device, L.W.C.O.,
installed above the normal boiler water level.
2
0
Circulators
A TACO 007 circulator has been supplied as standard
equipment with the boiler. The 007 is sized for use in a
closed heating system with a 30 psi, 207 kPa, maximum
operating pressure. If the 007 circulator furnished with
this boiler does not have the required capacity for the
system in which it is to be installed, an extra zone
circulator must be provided. A circulator with a higher
capacity may also be used. Figure 5 depicts the
performance curve for the TACO 007 circulator.
0
5
10
15
20
25
FLOW - GPM
Piping For Use With Cooling Units
The boiler, when used in connection with a refrigeration
system, must be installed so the chilled medium is piped
in parallel with the boiler. Appropriate valves must be
used to prevent the chilled water from entering the
boiler. See Figure 6 for the proper piping layout.
When a boiler is connected to a heating coil that may
be exposed to refrigerated air from an air handling
device, the piping system must be equipped with flow-
control valves or some other automatic means of
preventing gravity circulation of the boiler water during
the cooling cycle.
Page 10
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
CAUTION: To prevent damage due to excessive
condensation, one of the following piping options
Figure 8: Pump Away Bypass
should be used.
SUPPLY
RETURN
System Bypass
For systems using a circulator on the return as either a
single zone, or multiple zones with zone valves, install
a system bypass line between the supply and return
on the suction side of the circulator, see Figure 7.
Install a metering valve in this bypass line to regulate
the amount of flow that will be diverted to the return. A
plug valve offers the best control for this application.
Although other valves may be less expensive, a plug
valve will be easier to set accurately.
50%
120° F
50%
160° F
50%
160° F
100%
140° F
100%
160° F
PUMP AWAY
BYPASS
In the absence of a flow indicator, set the metering
valve using temperature as a guide. The accompanying
diagram suggests one scenario. This addition requires
only two tees, a plug valve, and a small amount of pipe
and offers the simplest approach to reliably control
condensation. For this system and those that follow,
be aware that you are using a percentage of the pump
capacity to blend, but the friction loss for the entire
pump flow has been reduced. In most cases, the
standard pump packaged with the boiler has enough
capacity to feed the baseboard distribution system and
the bypass line.
Pumped Blend
An additional circulator can also be used to provide a
return water temperature blend. This method works
well with systems with multiple zones with circulators,
see Figure 9. The dedicated bypass circulator provides
a strong blending flow without diminishing the flow
available to any heating zone. Any residentially sized
circulator is adequate for this purpose.
Each of these bypass solutions also has the added
benefit of increasing circulation in the boiler which will
maximize tankless coil output and increase the accuracy
of temperature sensing controls.
Figure 7: System Bypass
SUPPLY
RETURN
Figure 9: Pumped Bypass
50%
120° F
50%
160° F
50%
160° F
SUPPLY
RETURN
100%
100%
160° F
140° F
100%
120° F
100%
160° F
100%
160° F
SYSTEM
BYPASS
200%
140° F
200%
160° F
Pump Away Bypass
PUMPED
BYPASS
For systems that use a single circulator to pump away
from the boiler, the bypass should be installed on the
discharge side of the circulator, see Figure 8. Full
temperature water supplies the baseboard distribution
system as before. Half of the circulator’s volume moves
through the bypass, blending and heating the cooler
return water. Again, the cost of installing the bypass is
small and setting it by temperature can be accomplished
with a contact thermometer.
Page 11
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Reverse Acting Aquastats
GAS SUPPLY PIPING
An alternative for existing systems experiencing
condensation that does not require re-piping the boiler
utilizes a reverse acting aquastat, one that makes on
temperature rise. This approach works best in single
zone systems. Wired in series with the circulator, this
control holds the circulator off until the boiler reaches
an acceptable temperature and then starts system
circulation, see Figure 10.
WARNING: All gas piping must be installed by a
qualified technician in accordance with the
provisions set forth in the latest revision of ANSI
Z223.1 and all applicable local building codes
and regulations. All LP gas connections must
be made by a licensed propane installer. Failure
to comply with this WARNING can result in
extensive property damage, severe personal
injury or death!
The most commonly available reverse acting aquastat
is a Honeywell L4006B. The aquastat should be
mounted in an immersion well directly installed in the
boiler. The use of heat conductive grease, Honeywell
part # 972545, in the immersion well is strongly
recommended for fast and accurate temperature
response. Set this adjustable aquastat to make at no
less than 130° F, 54°C. While this method can cause
the circulator to cycle more frequently, setting the
aquastat’s differential to the maximum 25-30°F will
minimize short cycling.
The GB100W hot water boiler comes from the factory
ready to be piped to the gas supply.
WARNING: Check the boiler rating plate to make
sure that the boiler is for the type of gas that will
be used. If it isn’t, do not connect the boiler to
the gas supply. Failure to comply with this
warning can result in extensive property
damage, severe personal injury or death!
Figure 10: Reverse Aquastat
If for any reason the boiler is not for the type of gas
available at the installation site, call the nearest Smith
Cast Iron Boiler distributor to resolve the problem.
115 volts
reverse
aquastat
Table 3 should be used to ensure that the gas supply
piping is sized properly. If more than one appliance is
supplied by the same supply pipe, the piping must be
sized based on the maximum possible demand. Do not
neglect the pressure drop due to pipe fittings. Table 4
should be used in conjunction with Table 3 to ensure
that the supply piping has the capacity to meet the
demand.
N.O.
circulator
24 volts
T
t'stat
T
operating
aquastat
REVERSE
AQUASTAT
Table 3: Gas Pipe Capacity
Maximum pipe capacity in ft3/hr based on 0.60 specific gravity gas
GV
N.C.
SET AT 120° F
at pressure of 0.5 psig or less and a 0.3" W.C. pressure drop.
Nominal
Pipe length in feet
40 50 60
Maximum gas volume in cubic feet/hr, (ft3/hr)
90 79
520 350 285 245 215 195 170 150 120
Iron Pipe 10
Size (in.)
20 30
80 100 150
3/4"
1"
278 190 152 130 115 105
64
1-1/4" 1050 730 590 500 440 400 350 305 250
1-1/2" 1600 1100 890 760 670 610 530 460 380
Table 4: Equivalent Length Chart
Eqivalent length of pipe fittings in feet
Nominal
Iron Pipe
Size
Type of pipe fitting
90° Elbow
Tee
Gate Valve
Gas Cocks
(flow thru branch) (full port)
Equivalent length in feet
(inches.)
3/4"
2.06
2.62
3.45
4.02
4.12
5.24
6.90
8.04
0.48
0.61
0.81
0.94
1.25
1.60
2.15
2.50
1"
1-1/4"
1-1/2"
Page 12
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Figure 11 depicts the proper way to connect the boiler
to the gas supply piping. The manual shut-off valve
ELECTRICAL WIRING
MUST be installed in the supply piping. It should be
approximately 5 ft, 1.5 m above the floor. Provide a
drip leg/sediment trap at the bottom of the vertical
section of the gas supply pipe. A ground joint union
should be installed between the boiler gas controls
and the supply piping. Each of these items are needed
to ensure long life and ease of servicing. Always use a
pipe sealant that is suitable for use with LP gas.
WARNING: All electrical wiring must conform to
all applicable local codes and the latest revision
of the National Electrical Code, ANSI/NFPA-70.
Failure to comply with this warning can result in
extensive property damage, personal injury or
death!
Electrical Power Connections
Figure 11: Gas Supply Piping
CAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause
improper and dangerous operation!
GAS INLET
INSTALL MANUAL
SHUT-OFF VALVE
5 FT. ABOVE FLOOR
WHERE REQUIRED BY
LOCAL CODES
ATTENTION: Au moment de l'entretien des
commandes, étiquetez tous les fils avant de les
débrancher.Deserreursdecâblagepeuvententraîner
un fonctionnement in-adéquat et dangereux.
S'assurer que l'appareil fonc-tionne adéquatement
une fois l'entretirn terminé.
GAS SUPPLY
PIPING
GROUND JOINT
UNION
SEDIMENT TRAP
OR
DRIP LEG
(TO EXTEND TO FLOOR)
The electrical connections to this boiler must be made
in accordance with all applicable local codes and the
latest revision of the National Electrical Code, ANSI/
NFPA-70. Installation should also conform with CSA
C22.1 Canadian Electrical Code Part I if installed in
Canada. Install a separate 120 volt 15 amp circuit for
the boiler. A shut-off switch should be located at the
boiler. The boiler must be grounded in accordance with
the authority having jurisdiction, or if none, the latest
revision of the National Electrical Code, ANSI/NFPA-
70.
TO
BOILER
FLOOR LEVEL
CAUTION: Always use a wrench on the gas valve
body when making gas connections to it. Never
over-tighten the piping entering the gas valve body.
Failure to comply with this caution may result in gas
valve failure!
Line voltage field wiring of controls and other devices
must conform to the temperature limitation of type T
wire at 95°F, 35°C, above room temperature. Use
copper conductors with a minimum size of #14 awg.
Low voltage wiring must not be less than #18 awg with
a neoprene, thermoplastic or other equivalent insulation
having a minimum insulation thickness of 0.012 in,
0.3 mm.
Safe lighting and other performance criteria were met
with the gas manifold and control assembly provided
on the boiler. All gas connections MUST be leak tested
before putting the boiler into operation.
WARNING: Never use an open flame to test for
gas leaks. Always use an approved leak
detection method. Failure to comply with this
warning can cause extensive property damage,
severe personal injury or death!
Thermostat Installation
ALWAYS follow the instructions included with the
thermostat to be used to control the boiler. Proper
location of the thermostat will ensure efficient trouble-
free operation of the boiler. Mount the thermostat to an
inside wall at a height approximately five feet above
the floor. Avoid placing the thermostat in areas that will
not provide an accurate measurement of the room
temperature. Locating the thermostat behind a door, in
an alcove, close to a source of thermal radiation or in a
drafty area will cause poor or sporadic heating.
Whenever the gas supply piping is pressure tested the
boiler gas controls must be protected. If the test
pressure is equal to, or less than 1/2 psig, 3.5 kPa,
isolate the boiler by closing it’s manual shut off valve,
see Figure 11. If the test pressure is greater than, or
equal to 1/2 psig, 3.5 kPa, disconnect the boiler and
it’s individual shut-off valve.
Vent Damper
The vent damper supplied with the boiler has been
wired with a 6 pin molex connector that will plug directly
into the boiler’s wiring harness.
Page 13
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Figure 12: Fenwal/Honeywell Direct Ignition
Page 14
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Figure 13: Honeywell Intermittent Pilot Ignition
Page 15
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Figure 14: Honeywell Continuous Pilot Ignition
Page 16
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Figure 15: Multi Zone Diagram
Figure 16: Multi Zone Diagram
T87F ZONE 1
T87F ZONE 2
T87F ZONE 3
TO ADDITIONAL
R845A RELAYS
FOR OTHER ZONES
LINE VOLTAGE
LOW VOLTAGE
V8043F
END SWITCH
V8043F
END SWITCH
V8043F
END SWITCH
R8285D
1
R845A RELAY
ZONE 1
TH-TR
TH
TR
TH-TR
TH
TR
TH-TR
TH
TR
6
5
4
3
1
2
3
W
G
Y
R8285D
1
R
C
LINE VOLTAGE
LOW VOLTAGE
3
2
W
G
Y
W
L
BK
(HOT)
LOW
R
C
CIRCULATOR
ZONE 1
VOLTAGE
THERMOSTAT
L1
1
L2
1
L
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
POWER
SUPPLY
1
POWER
1
2
SUPPLY
W
BK
CIRCULATOR
L1
L2
POWER
SUPPLY
1
1
2
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
SIZE ADDITIONAL TRANSFORMER 8VA PER EACH V8043F ZONE VALVE THAT IS REQUIRED.
Figure 17: Multi Zone Diagram
LINE VOLTAGE
LOW VOLTAGE
ZONE 1
THERMOSTAT
ZONE 2
THERMOSTAT
ZONE 3
THERMOSTAT
R8285D
1
3
R882C
N.O.
N.C.
COM.
R882C
N.O.
N.C.
COM.
R882C
N.O.
N.C.
COM.
24
VAC
W
G
Y
N.O.
N.C.
COM.
N.O.
N.C.
COM.
N.O.
N.C.
COM.
2
1
C
R
2
W
B
W
B
W
B
W
BK
W
BK
L1
CIRCULATOR
ZONE 1
CIRCULATOR
ZONE 2
CIRCULATOR
ZONE 3
L2
1
L1
POWER
SUPPLY
1
1
2
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
L2
POWER
SUPPLY
SIZE ADDITIONAL TRANSFORMER 15VA PER EACH R882C ZONE RELAY THAT IS REQUIRED.
Page 17
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Never attempt to bypass the flame roll-out safety
shutoff switch for the purpose of operating the
boiler!
BOILER SET UP
NOTE: Before starting the boiler, turn off the
electrical supply going to it. Make sure that gas is
available at the combination control inlet. Open the
valves in the return and supply piping. Failure to
take these precautions will prevent the boiler from
operating properly.
The boiler should be inspected and serviced before
each heating season by a qualified service agency. The
boiler flue passages, venting system, ignition
components and the burners should be cleaned and
examined for deterioration due to corrosion. All
operational characteristics of the boiler such as
combustion products, the ignition safety shutoff devices
and proper control function must be thoroughly checked
out.
Fill the boiler and all of the radiation with water. Make
sure that the system is completely purged of air.
Review these instructions and make sure that the boiler
installation complies with ALL of the stated instruction up
to this point.
During the heating season, the owner should check the
boiler and the area around it at least once a month.
Clear away all objects on or near the boiler. Ensure that
there is no discoloration of adjacent combustible
materials due to heat. If there is, IMMEDIATELY call the
installer or a qualified service agency.
Flame Roll-out Safety Shutoff System
The GB100W gas boiler is fitted with a flame roll-out
switch that detects the presence of hot flue gases in the
control compartment. If something prevents the
combustion products from property passing through the
boiler, the roll-out switch will shut the boiler off. If the
flame roll-out safety system is activated, contact
qualified service agency to correct the problem and
reset the flame roll-out safety switch. Do not attempt to
start the boiler until problem has been corrected and the
switch has been reset.
Page 18
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
FORYOUR SAFETY READ BEFORE OPERATING
WARNING
If you do not follow these instructions exactly, a fire or explosion may result
causing property damage, personal injury or loss of life.
• Immediately call your gas supplier from a neighbor’s
A. 1. If this appliance is equipped with a pilot that must
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
be lit by hand, follow lighting instructions exactly
when lighting the pilot.
2. If this appliance is equipped with an ignition
device that automatically lights the pilot or burner,
follow operating instruction, do not try to light the
pilot or burner by hand.
C. Use only your hand to push in or turn the gas control
knob. Never use tools. If the knob will not push in or
turn by hand, don’t try to repair it, call a qualified service
technician. Force or attempted repair may result in a fire
or explosion.
B. BEFORE LIGHTING smell all around the
appliance 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 call a qualified service technician to
inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.
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.
LIGHTING INSTRUCTIONS
Continuous Pilot-Honeywell VR8200A and VR8300A (Natural or Propane), VRF8200P
and VR8300C (Propane Only)
1. STOP! Read the safety information above.
2. Set the thermostat to lowest setting.
3. Turn off all electric power to the appliance.
4. Remove control access panel.
button. The button should pop back and the pilot
remain lit. If it goes out repeat steps 5 - 10.
*If the button does not pop up when released, stop
and immediately call your service technician or gas
supplier.
5. Turn the gas control knob clockwise
to “OFF”.
6. Wait five (5) minutes to clear out any gas. Then
smell for gas, including near the floor. If you smell
gas, STOP! Follow “B” in the safety information
above. If you don’t smell gas, go to the next step.
7. Remove the pilot access panel located just above
the burner tubes.
*If the pilot will not stay lit after several tries, turn the
gas control knob to “OFF” and call your service
technician or gas supplier.
11. Replace the pilot access panel.
12. Turn the gas control knob counterclock-wise
to “ON”.
13. Replace control access panel.
8. The pilot’s located behind this panel.
9. Turn the knob on the gas control counterclock-wise
to “PILOT”.
14. Turn on all electric power to the appliance.
15. Set thermostat to desired setting.
10.Push and hold down the red button next to the
control knob. Light the pilot with a match and wait
approximately one (1) minute before releasing the
16. If the appliance will not operate, follow the
instructions “TO TURN OFF GAS TO APPLIANCE”
and call your service technician or gas supplier.
1"
±1/16
PRESSURE REGULATOR
ADJUSTMENT (UNDER
CAP SCREW)
OUTLET PRESS. TAP
5/16
±1/16
3/8" - 1/2"
FLAME
ON PROBE
GAS INLET
GAS OUTLET
ON
BURNER
TUBE
PILOT
OFF
PILOT
BRACKET
RED RESET BUTTON
GAS CONTROL KNOB
CONTINUOUS PILOT
Page 19
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
POUR VOTRE SÉCURITÉ LISEZ AVANT D'ALLUMER
AVERTISSEMENT. Quiconque ne respecte pas à la lettre les instructions dans la présente notice risque
de déclencher un incendie ou une explosion entraînant des dommages, des blessures ou la mort.
• Si vous ne pouvez rejoindre le fournisseur, appelez le
service des incendies.
A. Cet appareil est muni d'une veilleuse qui doit être
allumée manuellement. Respectez les instructions
cidessois à la lettre.
C. Ne poussez ou tournez la manette d'admission du
gaz qu'à la main; ne jamzis utiliser d'outil. Si la manette
reste coincée, ne tentez pas de la réparer; appelez un
technicien qualifié. Le fait de forcer la manette ou de la
réparer peut délencher une explosion ou un incendie.
B. Avant d'allumer la veilleuse, reniflez tout autour de
l'appareil pour déceler une odeur de gaz. Reniflez près
du plancher, car certains gaz sont plus lourds que l'air et
peuvent s'accumuler au niveau du sol.
D. N'utilisez pas cet appareil s'il été plongé dans l'eau,
même partiellement. Faites inspecter l'appareil par un
technicien qualifié et remplacez toute partie du systeme
de contrôle et toute commende qui ont été plongés dans
l'eau.
QUE PAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:
• Ne pas tenter d'allumer d'appareil.
• Netouchezàaucuninterrupteur;nepasvousservirdes
téléphones se trouvant dans le bâtiment.
• Appelezimmédiatenemtvotrefournisseurdegasdepuis
un voisin. Suivez les instructions du fournisseur.
INSTRUCTIONS D'ALLUMAGE
1. ARRÊTEZ! Lisez les instructions de sécurité sur la
portion supérieure de cette étiquette.
8. Identifiez la veilleuse,
suivez le tube métal-
2. Réglez le thermostat à la température la plus basse.
3. Coupez l'alimentation électrique de l'appareil.
4. Enlever le panneau de porte du réchauffer.
5. Poussez légèrement la manette de commande de
lique de la manette de
commade de gaz. La
veilleuse se trouve
entrelesdeuxtubesde
gaz et tournez-la vers la droite jusqu'
position “OFF”.
à la
brûleurs derrière la
trappe d'observation.
9. Tournez la manette de commande de gaz dans le
sens contraire des aiguilles d' une montre jusqu' à la
position (Veilleuse).
10. Enfoncez la manette de commande et maintenez-la.
Allumez immediatement la veilleuse avec des
allumettes. Continuez à appuyer sur la manette
pendant environ 1 minute après l' allumage de la
veilleuse. Relâcher la veilleuse et elle reprendra sa
position initiale. La veilleuse doit rester allumée. Si
elle s' éteint, repettez les étapes de 4 à 9.
•Si la manette ne se soulève pas d' elle- même
lorsqu' on la relâche, arrêtez et appelez immédi-
atement le technicien ou le fournisseur de gaz.
•Si la veilleuse ne reste pas allumée après plusieurs
tenatives, tournez la manette de commande de gaz
6. Attendre cinq (5) minutes pour laisser échapper tout
le gaz. Reniflez tout autour de l'appareil, y compris
pres du plancher, pour déceler une 'odeur de gaz.
Si vous sentez une odeur de gas, ARRÊTEZ! Pas-
sez à l'étape “B” des instructions de sécurité sur la
portion sepérieure (à gauche) de cette etiquette. S'il
n'y a pas d'odeur de gaz, passer à l'étape suivante.
7. Ouvrez la trappe d'observation de la chambre
de combustion située au-dessus des brûleurs
principaux.
sur la position "OFF" et appelez le technicien
ou le fournisseur.
11. Refermez la trappe de la chambre d' observation.
12. Déplacez la manette de commande de gaz vers la
gauche jusqu'
à la position "ON"
13. Rebranchez l' alimentation électrique de l'appareil.
14. Réglez le thermostat à la température désirée.
COMMENT COUPER L'ADMISSION DE GAZ DE L'APPAREIL
1. Mette le thermostat à la température la plus basse.
2. Siunentretiendoitêtreeffectué,coupezl'alimentation
électrique de l'appareil.
4. Tourner le bouton de commande de gaz vers
droite, enpositiond'arrêt“OFF”. Nepasforcer!
5. Replacer le panneau de parte du réchauffer.
3. Lever le panneau de parte du réchauffer.
Page 20
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
OPERATING INSTRUCTIONS
Intermittent Pilot - WHITE RODGERS 36C & 36E and Honeywell VR8304A (Natural or Propane),
VR8304P (Propane Only)
Direct Ignition - White Rodgers 36C & 36E and Honeywell VR8305A (Natural or Propane),
VR8305P (Propane Only)
1. STOP! Read the safety information above.
2. Set the thermostat to lowest setting.
3. Turn off all electric power to the appliance.
4. This appliance is equipped with an ignition device
which automatically lights the pilot or burner. Do not
try to light the pilot or burner by hand!
smell for gas, including near the floor. If you smell
gas, STOP! Follow “B” in the safety information
above. If you don’t smell gas, go to the next step.
8. Turn the gas control knob counterclock-wise
to “ON”.
9. Replace control access panel.
10. Turn on all electric power to the appliance.
11. Set thermostat to desired setting.
5. Remove control access panel.
6. Turn the gas control knob clockwise
to the
full “OFF” position, on W-R 36C/E push the knob
before turning.
7. Wait five (5) minutes to clear out any gas. Then
12. If the appliance will not operate, follow the
instructions “TO TURN OFF GAS TO APPLIANCE”
and call your service technician or gas supplier.
PRESSURE REGULATOR
ADJUSTMENT (UNDER
CAP SCREW)
OUTLET PRESS. TAP
PRESSURE REGULATOR
ADJUSTMENT (UNDER
CAP SCREW)
OUTLET PRESS. TAP
GROUND
TERMINALS (2)
GROUND
TERMINALS (2)
GAS INLET
GAS OUTLET
GAS INLET
GAS OUTLET
ON
ON
OFF
OFF
GAS CONTROL KNOB
GAS CONTROL KNOB
HONEYWELL VR8304A/P
HONEYWELL VR8305M/P
PRESS. REGULATOR
PRESS. REGULATOR
GAS INLET
GAS OUTLET
OF
F
GAS INLET
GAS OUTLET
NO
ON
OFF
GAS CONTROL KNOB
SHOWN IN "ON" POSITION
PILOT FLOW ADJ. SCR.
GAS CONTROL KNOB
SHOWN IN "OFF" POSITION
PILOT FLOW ADJ. SCR.
WHITE RODGERS 36E
WHITE RODGERS 36C
TO TURN OFF GAS TO APPLIANCE
4. Turn the gas control knob clockwise
to
1. Set the thermostat to lowest setting.
2. Turn off all electric power to the appliance if service
is to be performed.
“OFF”. On W-R controls push the knob in before
turning, don’t force it.
5. Replace control access panel.
3. Remove control access panel.
Page 21
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
POUR VOTRE SÉCURITÉ LISEZ AVANT DE METTRE EN MARCHE
AVERTISSEMENT. Quinconque ne respecte pas à la lettre les instructions dans la présente
notice risque de déclencher un incendie ou une explosion entraînant des dommages, des
blessures ou la mort.
• Appelez immédiatement votre fournisseur de gaz
depuis un voisin. Suives les instructions du
fournisseur.
A. 1. Cet appareil est muni d'ue veilleuse qui doit être
allumée manuellement. Respectez lis instructions
cidessous à la lettre.
• Si vous ne pouvez rejoindre le fournisseur, appelez
le service de incendies.
2. Cet appareil ne comporte pas de veilleuse. Il
est muni d'un dispositif d'allumage qui allume
automatique la brûleur. Ne tentez pas d'allumer
la brûleur manuellement.
C. Ne poussez ou tournez la maneette d'admission
du gaz qu'à la main; ne jamais utiliser d'outil. Si
la manette reste coincée; ne pas tenter de la
réparer; appelez un technicien qualifié. Le fait de
forcer la manette ou de la réparer peut déclencher
une explosion ou un incendie.
B. AVANT DE FAIRE FONCTIONNER, reniflez tout
autour de l'appareil pour déceler une odeur de
gaz. Reniflez près du plancher, car certains gaz
sont plus lourds que l'air et peuvent s'accumuler
au niveau du sol.
D. N'utilisez pas cet appareil s'il a été plongé dans
l'eau, même partiellement. Faites inspecter
l'appareil par un tecnicien qualifié et remplacez
toute partie du système de contrôle et toute
commande qui ont été plongés dans l'eau.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ
• Ne pas tenter d'allumer d'appareil.
• Ne touchez à aucun interrupteur; ne pas vous servir
des téléphones se trouvant dans le bâtiment.
INSTRUCTIONS DE MISE EN MARCHE
1. ARRÊTEZ! Lisez les instructions de sécurité sur
la portion supérieure de cette étiquette.
7. Attendre cinq (5) minutes pour laisser échapper
tout le gaz. Reniflez tout autour de l'appareil, y
compris près du plancher, pour déceler une odeur
de gaz. Si vous sentez une odeur de gaz,
ARRÊTEZ! Passez à l'étape B des instructions de
sécurité sur la portion supérieure de cette
étiquette. S'il n'y a pas d'odeur de gaz, passez à
l'étape suivante.
2. Mette le thermostat à la température la plus
basse.
3. Coupez l'alimentation électrique de l'appareil.
4. Cet appareil est équipé d'un dispositif d'allumage
automatique la brûleur.
8. Tourner le bouton de commande de gaz vers la
gauche
, en position de marche “ON”.
9. Replacer le panneau de parte du réchauffer.
10. Rétablìr toute l'alimentation électrique de la
chaudiere.
11. Mette le thermostat thermostat sur le régleage
désiré.
5. Enlever le panneau de parte du réchauffer.
12. Si l'appareil ne fonctionné pas, voir les instructions
de “COÙPURE DE L'ARRIVE DE GAZ A LA
CHAUDIERE” et appeler un technicien reparateur
ou le fournisseur de gaz.
6. Tourner le bouton de commande de gaz vers la
droite
, en position d'arrêt “OFF”. Ne pas
forcer!
COÙPURE DE L'ARRIVE DE GAZ A LA CHAUDIERE
1. Mette le thermostat à la température la plus basse.
4. Tourner le bouton de commande de gaz vers la
droite,
forcer!
en position d'arrêt "OFF". Ne pas
2. Si un entretien doit être effectué, coupez
l'alimentation électrique de l'appareil.
5. Replacer le panneau de parte du réchauffer.
3. Lever le panneau de parte du réchauffer.
Page 22
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
C. Raise the thermostat at least 5 degrees above the
room temperature. The burners should light.
BOILER OPERATION
WARNING: Before attempting to operate this
boiler you !MUST! read and fully understand the
lighting instructions in the “For Your Safety
Read Before Operating” section of this manual.
If you attempt to operate this boiler without a full
understanding of it’s ignition system a fire or
explosion may result causing extensive property
damage, severe personal injury or death!
D. A boiler designed for use with natural gas should
have a manifold gas pressure of 3.5" WC. On an LP
boiler, the manifold pressure should be 10" WC. To
adjust the manifold gas pressure, remove the gas
valve pressure regulator cap and turn the regulator
screw to obtain the correct pressure.
E. Test the ignition safety shutoff device, turn the gas
control knob on the gas valve to “PILOT”. The burners
should go out. Extinguish the pilot and wait 3 minutes.
Turn the gas valve control knob to “ON”. There should
be NO gas flow to the main burners with the pilot out! If
gas flow is detected, immediately turn the gas valve
control knob to “OFF” and have the problem corrected.
WARNING: Before proceeding read and fully
understand the instructions contained in this
manual. Do not attempt to operate this boiler if it
has not been installed in accordance with the
guidelines set forth in this manual.
Shouldoverheatingoccurorthegassupplyfailtoshutoff,
do not turn off or disconnect the electrical supply to the
pump. Instead, shut off the gas supply at a location
external to the appliance.
Intermittent & Direct Ignition Systems
A. Connect a manometer having a minimum capacity
of 10 in, 254 mm, WC to the outlet pressure port of the
gas valve. Make sure that the gas supply piping has
been purged of air and that all gas joints up to the gas
valve have been thoroughly checked for leaks. Wait at
least five minutes for the gas to dissipate before turning
on the electrical power.
En cas de surchauffe ou si l'alimentation de gaz ne peut
être coupée, ne pas couper ni débrancher l'alimentation
électrique de la ponpe. Fermer plutôt le robinet
d'admission de gaz à l'extérieur de l'appareil..
B. Read, understand and follow the lighting
instructions contained in this manual that are applicable
to the type of ignition system installed on the boiler.
Do not use this appliance if any part has been under
water. Immediately call a qualified service technician to
inspect the appliance and to replace any part of the
control system and any gas control that has been under
water.
C. Raise the thermostat at least 5 degrees above the
room temperature. For models equipped with an
intermittent pilot the pilot should light and then the
burners. If a direct ignition system is employed, a delay
of approximately 20 seconds will take place as the
silicon carbide ignitor heats up. Once the ignitor is hot,
the main gas valve will open and the burners should
light. If the burners fail to light the system will make
two more ignition attempts. If the burners light, but go
out within 4 seconds, the system will make three more
ignition attempts. If the burners have not lit after the
last ignition try, the gas valve will close and the system
will go into lock out. DO NOT attempt to reset the
system until the ignition system has been inspected
and the problem resolved. After 5 minutes has passed
since the last ignition attempt, reset the system by
turning the thermostat to it’s lowest setting and then
back to where it was. Momentarily interrupting the
electrical power to the boiler will also reset the system.
N'utilisez pas cet appareil s'il a été plongé dans l'eau,
même partiellement. Faites inspecter l'appareil par un
tecnicienqualifiéetremplaceztoutepartiedusystèmede
contrôle et toute commande qui ont été plongés dans
l'eau.
Continuous Pilot System
A. Connect a manometer having a minimum
capacity of 10" WC to the outlet pressure port of the gas
valve. Make sure that the gas supply piping has been
purged of air and that all gas joints up to the gas valve
have been thoroughly checked for leaks. Wait at least
five minutes for the gas to dissipate before turning on the
electrical power.
B. Read, understand and follow the lighting
instructions contained in this manual that are applicable
to the type of ignition system installed on the boiler.
D. With the burners in operation, close the manual
shutoff valve in the gas supply line. As soon as the
burner flames go out, open the manual shutoff valve. A
normal ignition sequence should take place.
CAUTION: To prevent being burned, take care not to
touch any hot metal parts. Stand clear of the boiler
during ignition to prevent being burned in the case
of flashback.
Page 23
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Gas Pressure Adjustment
E. With the burners in operation, interrupt the power
to the control circuit by lowering and raising the
thermostat. A normal ignition sequence should follow.
NATURAL GAS: Optimum results are obtained when
the boiler is operated at its full input rating, with 3.5 in,
89 mm, WC of manifold pressure. The manifold
pressure should not be more that 5% off this value. The
gas valve pressure regulator has been preset at the
factory. If adjustment is necessary the following steps
must be followed:
F. To test the ignition safety shutoff device, close the
manual shutoff valve in the gas supply line. Within 6
seconds of main burner flame extinction, the main gas
valve solenoid should close with an audible noise.
1. Attach a manometer to the pressure tap on the gas
valve body.
2. Remove the regulator adjustment screw cap from
the gas valve body.
3. Rotate the regulator adjustment screw clockwise to
increase the manifold pressure, counterclockwise to
decrease it.
4. Replace the regulator adjustment screw cap and
pressure tap plug.
On intermittent pilot systems a ticking noise should be
heard while the ignition module tries to relight the pilot.
After 1 minute the module should lockout and the try
for ignition end.
If a direct ignition system is employed, the ignitor should
glow and an attempt at ignition take place. After
unsuccessfully attempting to light the main burners the
ignition module should lock out.
CAUTION: Never force the regulator adjustment
screw beyond the stop limits or damage to the gas
valve will occur!
Open the manual shutoff valve in the gas supply line.
Reset the ignition control system by interrupting, then
restoring electrical power to the boiler. A normal
ignition sequence should take place.
PROPANE GAS: A manifold pressure of 10.0 in,
254 mm, WC must be maintained for proper operation of
the boiler. If the manifold pressure is off by more than
5% adjust it according to steps 1 through 4 above.
BOILER CHECKING & ADJUSTMENT
Pilot Adjustment
Input Rate
The pilot burner flame should envelope 3/8 in, 9.5 mm
to 1/2 in, 13 mm, of the thermocouple tip or flame
sensing probe, depending on the pilot type. If the pilot
flame is out of adjustment, remove the cap next to the
pilot tube fitting on the gas valve. Turn the pilot
adjustment screw clockwise to decrease the flame,
counterclockwise to increase it. Figure 18 depicts a
constant pilot, but the adjustment dimensions for an
intermittent pilot would be the same.
Gas appliances are rated based on sea level operation
with no adjustment required at elevations up to 2000
feet. At elevations above 2000 ft, 610 m, input ratings
should be reduced by 4% for each 1000 ft, 305 m above
sea level. Check the input rate as follows:
1. Turn off all other gas appliances that use the same
gas meter as the boiler.
2. Call your gas supplier and ask for the heating
value of the gas.
3. Start the boiler and let it run for 15 minutes.
4. Using the gas meter and a stop watch, clock the
time that it takes to burn 1 cubic foot of gas. To
increase the accuracy of the time, clock the time
that it takes to burn 10 cubic feet of gas and divide
the time by 10.
Figure 18: Pilot Location
1"
±1/16
5/16
±1/16
3/8" - 1/2"
FLAME
ON PROBE
5. Insert the heating value and the time, in seconds,
into the formula below.
RATE in = HEATING VALUE (BTU/FT3) (3600S/HR)
Time (s/ft3)
BURNER
TUBE
PILOT
BRACKET
EXAMPLE: If: heating value = 1000 BTU/ft3
time/ft3 = 18 s/ft3
RATE in = (1000 BTU/ft3) (3600 s/hr)
18 s/ft3
RATE in = 200,000 BTU/hr
Page 24
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
If the computed rate deviates by more than 5% from the
rated input value of the unit adjust the gas valve
Burner Removal
1. Close the manual shutoff valve in the gas supply
line and turn off electrical power to the boiler.
2. Disconnect the boiler ground joint union, see
Figure 12.
pressure accordingly. DO NOT adjust the manifold
pressure by more than 5%. If a proper rate cannot be
maintained without adjusting the manifold pressure
beyond the 5% limit, the main burner orifices must be
replaced. If the input rate is too low, go to the next lager
size orifices. If the input rate is too high, go to the next
smaller size.
3. Remove the front access panel.
4. Where applicable, disconnect the wires, pilot tube
and thermocouple from the gas valve.
5. Remove the two nuts that retain the manifold
assembly and remove the assembly.
6. The burner support panel has two jacket screws in
it. Remove the screws to free the support panel and
burners.
CAUTION: Never increase the input to the boiler
above that for which it is rated. Doing so can cause
premature failure of the boiler!
WARNING: Yellow, floating flames indicate a
lack of combustion air. Do not operate the boiler
until the problem is solved or severe personal
injury or death may occur!
Burner Installation
1. DO NOT install damaged or badly corroded
burners - replace them.
2. Insert the crimped end of each burner into the
burner base rear panel slots. Carefully slide the
burner support panel over the burner tubes and
studs.
Low Water Cutoff
If the boiler is equipped with a low water cutoff device
make sure that the main burners will NOT light when the
boiler has no water in it. To check, turn the boiler off,
close the valves in the water supply and return lines and
drain the boiler. If the boiler’s main burners light shut the
boiler off immediately and correct the problem.
3. Work the manifold assembly into position and
reattach it using the two nuts.
4. Replace the two jacket screws and reconnect all
wires, tubing and anything else that was
disconnected during the burner removal operation.
5. Complete the reassembly and follow the
instructions in the BOILER OPERATION section
of this manual.
Thermostat Adjustment
For a thermostat that employs an adjustable heat
anticipator, adjust the anticipator to match the current
measured in the thermostat circuit. An increased
anticipator setting may be necessary if the unit cycles
frequently. If the room temperature over-shoots the
thermostat setting, reduce the anticipator setting.
Heat Exchanger Cleaning
The burners should be removed to protect them from
falling rust and scale. Follow the Burner Removal
instructions in this manual.
1. Disconnect the vent pipe and the stack damper.
2. Remove the front access and top panels.
3. Disconnect the spill switch wires.
BOILER MAINTENANCE
WARNING: The ceramic combustion chamber in
the burner box and its gasket contain crystalline
silica. Wear a tightly fitted dust mask when
servicingtheburnerandgentlyhandletheburner
and its gasket to prevent inhalation of airborne
fibers.Crystallinesilicafibershavebeenidentified
as carcinogenic, or possibly carcinogenic when
inhaled.
4. Remove the two screws from the flue collector
retaining clips. Separate the flue collector from the
heat exchanger.
5. Remove the flue collector.
6. Remove as much of the old flue collector sealant as
possible. Thoroughly clean the flue passages with a
wire brush.
7. Vacuum out the burner base and clean and
inspect all of the components. Replace any
damaged or badly corroded parts.
8. Reseal the flue collector using Dow Corning #732 or
an equivalent sealant. And install the flue collector
retaining clips and screws.
CAUTION: Servicing, inspection and adjustment
must be done by a trained technician in accordance
with all applicable local and national codes. Verify
proper operation after servicing. Improper servicing
or adjustment can damage the boiler!
WARNING: Failure to properly seal the flue
collector to the heat exchanger can result in
leakage of combustion products which can
result in severe personal injury or death!
The boiler should be cleaned and inspected once a
year, before each heating season. Make sure that the
burners and ignition components are free from dust,
soot, dirt, corrosion or other deposits that would impair
the boiler’s performance. Refer to Replacement Parts
page for component identification.
9. Replace the top panel and reconnect the spill switch
wires and vent system.
10. Follow the Burner Installation procedure
outline in this section.
Page 25
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Vent System
INSTRUCTIONS TO THE INSTALLER
This copy of the INSTALLATION AND OPERATING
INSTRUCTIONS should be given to the owner of this
boiler and kept on file.
Thoroughly inspect the vent system for any signs of
blockage, corrosion or leakage. Immediately replace any
unsound vent system piping.
WARNING: Failure to properly inspect the vent
system on a regular basis may leave problems
undetected that can result in excessive levels
of carbon monoxide which can cause severe
personal injury or death!
The INSTALLER must make sure that the owner or
operator has a basic understanding of the following:
1. The lighting instructions, the type of ignition system
installed and how it operates.
2. What the labels on the boiler say.
3. How to start up and shut off the boiler.
4. How to turn the gas and electrical power on or off.
5. What to do if the boiler shuts down on ignition
system lock out.
6. Where to check the system temperature and
pressure and what they should be.
Controls
Use the BOILER OPERATION and BOILER
CHECKING AND ADJUSTMENT sections of this
manual as a reference.
1. Check the thermostat for proper operation.
2. If the boiler has been equipped with a low water
cutoff device, L.W.C.O, ensure that it operates
properly. A float type L.W.C.O. should be flushed
out.
3. The relief valve should vent water when the test
lever is lifted. It should not weep or discharge water
at normal system pressure. NEVER try to clean or
repair the relief valve! If the valve fails to operate
properly, replace it!
7. The importance of reading, understanding and
following these instructions.
The INSTALLER MUST make sure that the owner
knows to shut the boiler off and call for service if the
following conditions occur:
1. Yellow lazy flames or flames outside the boiler
acket.
2. Gas smell or other strange odors.
4. The aquastat high limit controls the maximum
water temperature in the boiler. It is adjustable
from 140°F, 60°C to 240°F, 116°C. If the water
temperature reaches the set temperature before
the demand for heat has been met, the aquastat
high limit should shut the boiler off. The water
temperature should never exceed the maximum set
point of 240°F, 60°C. The aquastat high limit
cannot be repaired. If it fails to function properly
replace it.
3. Discoloration of boiler or surrounding materials due
to overheating.
4. Water leaking from the heating system piping or
relief valve.
5. Flue products leaking from the vent system into the
living space. Dampness or condensation in the
building is a good indicator of this condition.
6. The boiler’s blocked vent shutoff system is actuated.
7. The boiler’s flame roll-out safety system is actuated.
8. Control malfunction or sporadic operation.
Page 26
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
REPLACEMENT PARTS
GB100 SERIES REPAIR PARTS
Number of Sections
Ref #
Name of Part
Part No.
55703
55704
55705
55706
55707
55708
55709
55710
55711
55712
55701
55702
55813
55814
55815
55816
55817
55818
55819
55820
55821
55822
3
4
5
6
7
8
9
10
11
12
1
Top, Rear, Inner Front and Front Panels
1
1
1
1
1
1
1
1
1
1
1
1
2
3
4
Left Side Panel
Right Side Panel
Floor Pan
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Page 27
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Number of Sections
Ref #
Name of Part
Part No.
3
4
5
6
7
8
9
10
11
12
5
Flue Collector/Drafthood
55803
55804
55805
55806
55807
55808
55809
55810
55811
55812
69879
69880
69881
69882
69883
69884
69885
69886
69887
69888
69445
60176
60177
69786
69787
69788
69789
69790
69791
69792
69793
69794
69795
50155
50154
60567
60226
69425
69426
69427
69428
69429
61988
60265
1
1
1
1
1
1
1
1
1
1
6
Heat Exchanger/Assembled Block
1
1
1
1
1
1
1
1
1
1
7
8
Burner
2
2
2
1
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
8
8
8
9
9
9
10
10
11
11
Burner Orifice (#42, NG)
Burner Orifice (#54, LP)
Manifold
9
1
1
1
1
1
1
1
1
1
1
1
1
1
10
11
12
13
14
High Limit (L4080B-1253)
Control Center (R8285D-1026)
Spill Switch (262 deg. F) 404257A
Rollout Switch (350 deg. F) 30T15
Vent Damper (5")
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Vent Damper (6")
Vent Damper (7")
1
1
1
1
Vent Damper (8")
Vent Damper (9")
1
1
1
1
1
1
1
1
15
16
Pressure Relief Valve (30 psi)
Temp & Pressure Gauge
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
SPARK IGNITION - HONEYWELL
Ignition Module (S8600M-1013)
Pilot-Ignitor Sensor PSE-NA29 NG & LP*
***For LP also order LP orifice
17
18
51177
50978
50998
50143
50701
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
19
Gas Valve (VR8304M-3103) NG & LP**
***For LP also order LP orifice
STANDING PILOT - HONEYWELL
Thermocouple (K16RA)
—
20
51006
50068
50069
50701
50018
61015
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Gas Valve (VR8200) NG & LP 3 - 10 Sec.***
Gas Valve (VR8300) NG & LP 11 & 12 Sec.***
***For LP also order LP orifice
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
21
Pilot Burner (Q314A-6961)***
***For LP also order LP orifice
HSI - FENWALL IGNITION SYSTEM
Ignition Module (35-655922-001)
Ignitor
20
21
22
50337
50072
50010
50009
50057
61239
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Gas Valve (36E01-308) NG
Gas Valve (36C67-423) NG
Gas Valve (VR8305M-3506) LP
Ignitor Bracket
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
—
Page 28
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
CANADIAN SUPPLEMENT
DANGER
Only the boiler may be served by the vent damper. Do not use it to vent an additional appliance; this will
cause a fire or carbon monoxide poisoning.
DANGER
LE VOLET DE VENTILATION DOIT SERVIR SEULE-MENT À LA CHAUDIÈRE. NE PAS L´UTILISER POUR
VENTILER D´AUTRES APPAREILS; SINON CELA POURRAIT PROVOQUER UN INCENDIE OU CAUSER
UN EMPOISONNEMENT PAR LE MONOXYDE DE CARBONE.
METHOD OF INSTALLATION FOR MOTORIZED VENT DAMPER
MÉTHOSE D´INSTALLATION POUR LE VOLET MOTORISÉ DE VENTILATION
The damper must be mounted as close as possible to
the draft hood without modifying the draft hood or
damper device.
Le registre doit être installé aussi près que possible du
coupe-tirage sans qu´une modification de ce coupe-
tirage ou le registre ne soit nécessaire.
Attach the lower portion of the vent damper to the draft
hood with 1/2 in, 13 mm or shorter screws or pop rivets.
Attacher la partie inférieure du volet de ventilation au
coupe-tirage à l´aide de vis de 13 mm ou plus courtes
ou des rivets aveugles.
Do not install within 6 in, 152 mm, of combustible
materials. Make sure the motor actuator and position
indicator are readily visible and accessible.
Ne pas installer le registre à moins de 152mm des
matériaux de combustion. S´assurer que dispositif de
commande du moteur est visible et facilement acces-
sible.
Plug the Molex connector on the damper harness into
the mating plug on the harness located inside the control
compartment.
Enficher la prise Molex sur le faisceau de fils du volet de
ventilation dans la prise a l´interieur d´armoire de
commande.
Determine the amperage draw of the gas control circuit
and damper device. Check heat anticipator in comfort
thermostat to determine that it’s properly adjusted.
Dèterminer l´appel de courant en ampères du circuit du
régulateur de gaz et du registre. Vérifier la résistance
anticipatrice de chaleur du thermostat d´ambiance afin
de déterminer si elle est correctement réglée.
To manually open the damper, follow instructions inside
the damper cover.
Pour ouvrir manuellement le registre suivre les
instructions apparaissant à l´intérieur du couverele.
DAMPER MUST BE IN OPEN POSI-
TION WHEN APPLIANCE MAIN
BURNERS ARE OPERATING.
LE REGISTRE DOIT ÊTRE EN
POSITION OUVERTE LORSQUE
LE BRULEÛR PRINCIPAL EST EN
MARCHE.
WIRE HARNESS FOR
VENT DAMPER
FAISCEAU DE FILIS DU
VOLET DE VENTILATION
POSITION INDICATOR
DISPOSITIF DE COMMANDE
CLOSED
CLOS
OPEN
OUVERTE
FLOW DIRECTION
SENS DE DEBIT
CONNECT WIRE HARNESS
BRANCHER LE FAISCEAU DU FILIS
Page 29
LIMITED LIFETIME WARRANTY
FOR RESIDENTIAL WATER BOILERS
This warranty statement is effective for all units manufactured after December 15, 1992 and supersedes all other warranties,
including those contained in other documents which might be included with this merchandise. This warranty applies only to the
original homeowner at the original place of installation.
First Through Tenth Year
Westcast, Inc. warrants that the cast iron sections of its residential water boiler for Smith Cast Iron Boilers were free of defects in
material and workmanship when shipped, and will remain free of defects under normal usage from the date of original installation,
for a period of ten years. In the event that the cast iron section is found to be defective in material or workmanship during this
period, Westcast, Inc. will repair or replace, at its option, the defective section.
Eleventh Year and Above
Westcast, Inc. warrants that the cast iron sections of its residential water boilers will remain free of defects in material and
workmanship under normal usage for the lifetime of the original owner at the original place of installation. Should any sections be
found to be defective, Westcast, Inc. will repair or replace, at its option, the original cast iron sections upon the payment of a
proportionate charge based on the time the defective section was in service. The proportionate charge will be equal to the
appropriate percentage of the retail price of the section at the time the warranty claim is made, determined as follows:
Year
11th
5
12th
10
13th
15
14th
20
15th
25
16th
30
17th
35
18th
40
19th
45
20th
50
21st 23nd 24th 25th & above
55 60 65 75
% of
Retail Price
Procedure for Obtaining Warranty Service
The homeowner should perform the following in order to insure prompt warranty service:
1. Notify the installer, who in turn should notify the distributor, promptly upon discovery of a condition believed to be caused by a
defect in manufacture. Failing this, the owner should notify Westcast, Inc., 260 North Elm St., Westfield, MA 01085 in writing,
giving full particulars in support of the claim.
2. Make available for inspection to Westcast, Inc. or its representative the parts alleged to be defective, and if requested by
Westcast, Inc., ship said parts prepaid to Westcast, Inc., 47 Westfield Industrial Park Road, Westfield, MA 01085 for inspection or
repair.
3. The homeowner is required to complete and mail the Warranty card attached hereto within ten days after the installation of the
boiler before coverage under the Warranty commences.
Exceptions and Exclusions
1. This Warranty covers cast iron boiler sections only. Other cast iron parts such as but not limited to grates and grate parts are
specifically not warranted. The burner, jacket, controls and other auxiliary equipment furnished by Westcast, Inc., but purchased
from others shall be limited to that manufacturer's warranty, if any.
2. This Warranty does not include expenses for removal or re-installation. The user will be responsible for the cost of replacement of
the defective part and labor and material necessary to the exchange. Replacement material will be invoiced to the Distributor in
the usual manner and will be subject to adjustment upon proof of defect.
3. Nothing herein shall be construed as a guaranty of workmanship of any installer in installing Westcast, Inc. cast iron boilers, or as
imposing on the Company any liability of any nature for unsatisfactory performance caused by faulty workmanship in installation,
which liability is expressly disclaimed.
4. This Warranty will not apply if the boiler is structurally altered; is used or operated at over its rated capacity; or is not maintained in
accordance with Westcast, Inc.'s recommendations or the accepted good practice of the industry as defined by the Hydronics
Institute, A.S.M.E. or other accepted authority.
5. This Warranty will not apply if the boiler has been damaged a result of: fire or other casualties; flooding or exposure to the
elements; settlement, distortion, collapse or cracking of any foundation area, beams or pipes surrounding the boiler; improper
or negligent installation, service or operation (including but not limited to the following - operated with insufficient water, allowed
to freeze; subject to flood conditions; or operated with water conditions and/or fuels or additives which have caused unusual
deposits or corrosion in or on the cast sections).
6. This Warranty applies only to boilers installed within the United States and Canada.
7. In order for this Warranty to be effective:
A. The boiler must have been properly installed in a single or two-family residential dwelling. Warranty does not apply to boilers
installed in apartments, commercial or industrial installations.
B. The boiler must have been assembled in strict accordance with Westcast, Inc. installation instructions furnished with the boiler.
C. Boiler sections must not have been damaged in handling during shipment or installation. The determination of damage in
handling or installation is a considered judgement of Westcast, Inc. and decision shall be final.
D. The boiler must have been serviced annually by a licensed contractor and proof of such service must be provided with warranty
claim. This service must include but is not limited to fireside cleaning and proper burner adjustment with combustion testing.
8. In no case shall Westcast, Inc.'s liability exceed the original selling price of the product found to be defective.
9. THIS WARRANTY IS IN LIEU OF ALL EXPRESS WARRANTIES OF ANY KIND. THE REMEDIES UNDER THIS WARRANTY
ARE EXCLUSIVE AND WESTCAST, INC. NEITHER ASSUMES NOR AUTHORIZES ANYONE TO ASSUME FOR IT ANY
OTHER OBLIGATIONS. IN NO EVENT SHALL WESTCAST, INC. BE LIABLE UNDER THIS WARRANTY OR OTHERWISE
IN ANY MANNER FOR ANY INCIDENTAL, REMOTE OR CONSEQUENTIAL DAMAGES RESULTING FROM BREACH OF
THIS WARRANTY OR CONDITION IMPLIED BY LAW OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS, FOR A PARTICULAR PURPOSE. SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY
NOT APPLY TO YOU.
10. This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
WARNING
Any appliance that burns natural gas, propane gas, fuel oil, wood or coal is capable of producing carbon
monoxide (CO).
Carbon Monoxide (CO) is a gas which is odorless, colorless and tasteless but is very toxic.
If your Smith boiler is not working properly, or is not vented properly, dangerous levels of CO may accumulate.
CO is lighter than air and thus may travel throughout the building. BRIEF EXPOSURE TO HIGH
CONCENTRATIONS OF CO, OR PROLONGED EXPOSURE TO LESSER AMOUNTS OF CO MAY RESULT IN
CARBON MONOXIDE POISONING.
EXPOSURE CAN BE FATAL AND EXPOSURE TO HIGH CONCENTRATIONS MAY RESULT IN THE
SUDDEN ONSET OF SYMPTOMS INCLUDING UNCONSCIOUSNESS.
Symptoms of CO poisoning include the following:
dizziness
headaches
nausea
vision problems
loss of muscle control
weakness
shortness of breath
unclear thinking
unconsciousness
The symptoms of CO poisoning are often confused with those of influenza, and the highest incidence of poisoning
occurs at the onset of cold weather or during flu season. A victim may not experience any symptoms, only one
symptom, or a few symptoms. Suspect the presence of carbon monoxide if symptoms tend to disappear when
you leave your home.
The following signs may indicate the presence of carbon monoxide:
• Hot gases from appliance, venting system, pipes or chimney, escaping into the living space.
• Flames coming out around the appliance.
• Yellow colored flames in the appliance.
• Stale or smelly air.
• The presence of soot or carbon in or around the appliance.
• Very high unexplained humidity inside the building.
If any of the symptoms of CO poisoning occur, or if any of the signs of carbon monoxide are present, VACATE
THE PREMISES IMMEDIATELY AND CONTACT A QUALIFIED HEATING SERVICE COMPANY OR THE GAS
COMPANY OR THE FIRE DEPARTMENT.
To reduce the risk of CO poisoning, have your heating system “tuned up” by a licensed heating contractor or the
gas company -- preferably before each heating season. Also have the service company check your chimney or
vent pipes for blockage.
Your home should also be adequately ventilated, particularly if you have insulated your home.
ONLY QUALIFIED, LICENSED SERVICE CONTRACTORS
SHOULD PERFORM WORK ON YOUR SMITH BOILER.
WARNING
Install, operate and maintain unit in accordance with manufacturer's instructions to avoid exposure to fuel sub-
stances or substances from incomplete combustion which can cause death or serious illness. The State of
California has determined that these substances may cause cancer, birth defects, or other reproductive harm.
Also, install and service this product to avoid exposure to airborne particles of glasswool fibers and/or ceramic
fibers known to the State of California to cause cancer through inhalation.
Page 31
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
WESTCAST, INC.
260 NORTH ELM STREET WESTFIELD, MA 01085
TEL. (413) 562-9631 FAX (413) 562-3799
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