RBI Futera II Series Installation & Operating Instructions Manual

FTII-IOM-3

FUTERA II SERIES FINNED COPPER

GAS BOILERS & WATER HEATERS

INSTALLATION & OPERATING

INSTRUCTION

DESIGNED AND TESTED ACCORDING TO A.S.M.E. BOILER AND PRESSURE
VESSEL CODE, SECTION IV FOR A MAXIMUM ALLOWABLE WORKING PRESSURE
OF 160 PSI WATER.

WARNING: If the information in this manual is not followed exactly, a fire
or explosion may result causing property damage, 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 / WATER HEATER.

CONSUMER, RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE PURPOSES.

260 North Elm Street 1300 Midway Boulevard
Westfield, MA 01085
Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]

www.rbiwaterheaters.com

Mississauga, Ontario L5T 2G8 Canada

䡲

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

AVERTISSMENT. Assurez-vous de bien suivre les instructions données dans cette notice pour
réduire au minimum le risque d’incendie ou d’explosion ou pour éviter tout dommoge matériel,
toute blessure ou la mort

Ne pas entreposer ni utiliser d’essence ou ni d’autres vapeurs ou liquides inflammables à
proximité de cet appareil ou de tout autre appareil.

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.

• Appelez immédiatement votre fournisseur de gas depuis un voisin. Suivez les intructions du
fournisseur.

• Si vous ne purvez rejoindre le fournisseur, appelez le service des incendies.

L’installation et l’entretien doivent être assurés par un installateur ou un service d’entretien
qualifié ou par le fournisseur de gaz.

CONTENTS

Before Your Start page 2
Ratings & Capacities page 3
Location page 3
Combustion Air & Ventilation page 3
Venting Guidelines page 5
Common Vent Systems page 11
General Piping Requirements page 11
Heating System Piping page 12
Domestic Water Supply Piping page 15
Gas Supply Piping page 17
Electrical Wiring page 17
Boiler/Water Heater Operation page 18
Operating Instructions page 18
Checking, Adjustment & Operation page 19
Diagnostics page 22
Maintenance page 22
Trouble-Shooting page 24

Repair Parts page 25

BEFORE YOU START

This manual covers the application, installation, operation
and maintenance of a Futera II Series finned copper
heating boiler/water heater.

To obtain the safe, dependable, efficient operation and long
life for which this heating boiler/water heater was designed,
these instructions must be read, understood and followed.

The Futera II Series finned copper heating boiler/water
heaters have been design certified by CSA for use with
natural and propane gas under the latest revision of ANSI­Z21.10.3/CSA 4.3, Gas Water Heaters, ANSI-Z21.13/CSA

4.9, Gas-Fired Low Pressure Steam and Hot Water Boilers
and CAN1-3.1, Industrial and Commercial Gas Fired
Packaged Boilers. Each unit has been constructed and
hydrostatically tested for a maximum working pressure of
160 psi in accordance with Section IV of the A.S.M.E. Boiler
and Pressure Vessel Code.

All aspects of the boiler/water heater 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-latest revision.
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.

In Canada, the installation must be in accordance with the
requirements of CSA B149.1 or .2, Installation Code for
Gas Burning Appliances and Equipment.

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.

Direct all questions to your RBI Water Heaters distributor
or contact the RBI Customer Service Department at: 260
North Elm Street, Westfield, MA 01085 for US or 1300
Midway Boulevard, Mississauga ONT L5T 2G8 for Canada.
Always include the model and serial numbers from the
rating plate of the boiler/water heater in question.

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FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

RATINGS & CAPACITIES

Before undertaking the installation of the Futera II Series
boiler/water heater check the rating plate to ensure that the
unit has been sized properly for the job. The “Net I=B=R
Ratings” specify the equivalent amount of direct cast iron
radiation that the unit can supply under normal conditions.
Also ensure that the unit 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.

BOILER/WATER HEATER LOCATION

1. This boiler/water heater is suitable for indoor and outdoor
installations. Locate the boiler/water heater in an area that
provides good access to the unit. Servicing may require the
removal of jacket panels. Allow the minimum clearances
between adjacent construction and the boiler/water heater
as listed in Table 1. Accessibility clearances must take
precedence over fire protection clearances.

Table 1 Clearance to Service

Combustibles Clearance

Top 24" (610 mm) 36" (914 mm)
Back 14" (356 mm) 24" (610 mm)
Left Side 6" (153 mm) 12" (306 mm)
Right Side 6" (153 mm) 12" (306 mm)
Front 8" (203 mm) 36" (914 mm)

2. An optimum site will be level, central to the piping
system, close to a chimney or outside wall and have
adequate fresh air for combustion. Ensure that the boiler/
water heater is level from front to back and from side to
side. Use metal shims to level the boiler/water heater.
Electrical and electronic components must also be
protected from exposure to water during operation and
maintenance. DO NOT install this boiler/water heater in a
location that would subject any of the gas ignition
components to direct contact with water or excessive
moisture during operation or servicing.

3. Ensure that the floor is structurally sound and will support
the weight of the boiler/water heater.

NOTE:
The Futera II may be installed directly on combustible
flooring, but never on carpeting.

4. Locate the boiler/water heater in an area that will prevent
water damage to adjacent construction should a leak occur
or during routine maintenance. If such a location doesn’t
exist, a suitable drain pan that’s adequately drained must
be installed under the unit.

CAUTION
Units installed outdoors MUST be protected from ice
and snow accumulation or the unit will be damaged
voiding the warranty!

WARNING
Never store combustible materials, gasoline or any product
containing flammable vapors or liquids in the vicinity of the
boiler/water heater. Failure to comply with this warning can
result in an explosion or fire causing extensive property
damage, severe personal injury or death!

COMBUSTION AIR & VENTILATION

WARNING
This boiler/water heater 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 and all applicable local building codes.
Canadian installations must comply with CAN/ CGA B149.1
or .2 Installation Code for Gas Burning Appliances and
Equip-ment, or applicable provisions of the local building
codes. Failure to provide adequate combustion air for this
boiler/water heater can result in excessive levels of carbon
monoxide which can result in severe personal injury or
death!

To operate properly and safely this boiler/water heater
requires a continuous supply of air for combustion. NEVER
store objects on or around the boiler/water heater!

CAUTION
Combustion air contaminated with fluorocarbons or
other halogenated compounds such as cleaning
solvents and refrigerants will result in the formation
of acids in the combustion chamber. These acids will
cause premature failure of the boiler/water heater
voiding the warranty!

CAUTION
If the boiler/water heater is operated while the building
is under construction it MUST be protected from wood,
concrete, sheet rock and other types of dust or the unit
will be damaged voiding the warranty!

Buildings will require the installation of a fresh air duct or
other means of providing make-up air if the intake air option
isn’t used. Any building 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.

5. DO NOT place this boiler/water heater in a location that
would restrict the introduction of combustion air into the unit
or subject it to a negative pressure, see VENTING
GUIDELINES.

6. NEVER place this boiler/water heater in a location that
would subject it to temperatures at or near freezing. See
the Freeze Protection Section on page 12.

WARNING
Never operate the Futera II in an environment subjected
to a negative pressure unless it is Direct Vented. Failure
to comply with this warning can result in excessive levels
of carbon monoxide causing severe personal injury or
death!

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FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

All Air From Inside The Building

If the Futera II is to be located in a confined space the
minimum clearances listed in Table 1 must be maintained
between it and any combustible construction. When
installed in a confined space without the intake air option
two permanent openings communicating with an additional
room(s) are required. The combined volume of these
spaces must have sufficient volume to meet the criteria for
an unconfined space. The total air requirements of all gas
utilization equipment, fireplaces, wood stoves or any type
of exhaust fan must be considered when making this
determination. Each opening must have a minimum free
area of 1 in

2

/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 square
inches (64516 mm

2

) in size. The upper opening must be
within 12 inches (300 mm) of, but not less than 3 inches
(80 mm) from, the top of the enclosure. The bottom opening
must be within 12 inches (300 mm) of, but not less than 3
inches (80 mm) from, the bottom of the enclosure.

All Air From Outside The Building
When installed in a confined space without the intake air
option two permanent openings communicating directly

with, or by ducts to, the outdoors or spaces that freely
communicate with the outdoors must be present. The upper
opening must be within 12 inches (300 mm) of, but not less
than 3 inches (80 mm) from, the top of the enclosure. The
bottom opening must be within 12 inches (300 mm) of, but
not less than 3 inches (80 mm) from, the bottom of the
enclosure.

must be given to the blockage effects of louvers, grills and
screens. Screens must have a minimum mesh size of 1/
4" (6.4mm). If the free area through a louver or grill is not
known ducts should be sized per Table 2 above.

Intake Air Option – General Guidelines

This configuration provides combustion air directly to the
boiler/water heater’s air intake using a dedicated pipe when
using the direct vent option. The RBI air intake adapter
must be fitted to the blower inlet. Combustion air can be
drawn in horizontally through an outside wall or vertically
through the roof, see Figures 1, 2, 3 & 4.

WARNING
Each boiler/water heater must have it’s own intake air
system. Common intake air systems are not to be used!
Improper installation can result in excessive levels of
carbon monoxide which can cause severe personal injury
or death!

Single wall galvanized smoke pipe, single wall aluminum
pipe, flexible aluminum pipe, PVC or CPVC pipe can be
used for the intake air pipe. It must be sized per Table 3.

Table 3 – Intake Air Pipe Sizing

2

Model Size Pipe Diameter in

(mm2)
500 8 (203)
750, 1000 10 (254)
1250, 1500 12 (305)
1750, 1950 14 (356)

Where directly communicating with the outdoors or
communicating with the outdoors through vertical ducts,
each opening shall have a minimum free area of 1 in
Btu/hr (550 mm

2

/kW) of the total input rating of all of the

2

/4000

equipment in the enclosure.

Where communicating with the outdoors through hori­zontal ducts, each opening shall have a minimum free area

2

/2000 Btu/hr (1100 mm2/kW) of the total input rating

of 1 in
of all of the equipment in the enclosure.

When ducts are used, they must have the same cross­sectional area as the free area of the opening to which
they connect.

Table 2 – Make-up Air Duct Sizing

2

Required Cross Sectional Duct Area in

(cm2)
Input 1/4" (6.4 mm) Metal Wooden
(MBH) Wire Screen Louvers Louvers
500 125 (806) 167 (1077) 500 (3226)
750 187 (1206) 250 (1613) 750 (4839)
1000 250 (1613) 333 (2148) 1000 (6452)
1250 313 (2019) 416 (2684) 1250 (8065)
1500 375 (2419) 500 (3226) 1500 (9677)
1750 437 (2819) 583 (3761) 1750 (11,290)
1950 486 (3135) 649 (4187) 1950 (12,581)

When calculating the free area necessary to meet the
make-up air requirements of the enclosure, consideration

All joints in metal intake air systems must be secured using
corrosion resistant fasteners and sealed using a suitable
Silicone caulk. If PVC or CPVC is used, the joints must
be cleaned with a suitable solvent and connected using a
solvent based PVC cement. The intake air system MUST

be supported by the building structure not the boiler/
water heater.

A stack damper interlocked with the unit should be instal­led in the intake air pipe when the infiltration of subfreez­ing air could occur, otherwise the unit could freeze up.

Intake Air Option – Vertical Guidlines

The maximum equivalent length for the vertical intake air
pipe is 60 feet (19.7 m). Each 90˚ elbow and the intake
air cap are equal to 10 linear feet (3.3 m) of pipe.

A listed, nonrestrictive intake air cap must be used. The
intake air cap must terminate as shown in Figure 3. The
penetration point in the roof must be properly flashed and
sealed.

Intake Air Option – Horizontal Guidlines

The maximum equivalent length for the horizontal intake
air pipe is 60 feet (19.7 m). Each 90˚ elbow and the intake
air terminal are equal to 10 linear feet (3.3 m) of pipe. If
horizontal runs exceed 5 feet (1.5 m) they must be
supported at 3 foot (0.98 m) intervals with overhead
hangers. The certified intake air terminal from RBI must be
used, see Figures 1, 2 and 4.

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FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

GENERAL VENTING GUIDELINES

WARNING The vent installation must be in accordance
with Part 7, Venting of Equipment, of the National Fuel Gas
Code, ANSI Z223.1-latest revision or applicable provisions
of the local building codes. Canadian installations must
comply with CAN/CGA B149.1 or .2 Installation Code.
Improper venting can result in excessive levels of carbon
monoxide which can result in severe personal injury or
death!

All vent systems must be fully supported by the building
structure and not by the boiler/water heater. Appropriate
thimbles and fire-stops must be used where required.

WARNING Each boiler/water heater must have it’s own
vent system. Common positive pressure vent systems are
not to be used! Improper installation can result in excessive
levels of carbon monoxide which can cause severe
personal injury or death!

Note: When a barometric damper is used it must be
installed directly to the boiler/water heater flue outlet
to ensure proper operation.

VENT SYSTEM OPTIONS

The Futera II may be vented the following ways:

1) Direct Vent (Positive Pressure), uses a vent system

certified to UL 1738 for installations in the United
States, ULS636 for installations in Canada.
Combustion air is piped from the outdoors to the
blower inlet.

2) Side Wall Vent (Positive Pressure), uses a vent

system certified to UL 1738 for installations in the
United States, ULS636 for installations in Canada.
Combustion air is obtained from the space in which
the unit is installed.

Horizontal Direct Vent Systems – Figures 1 & 2

The vent materials used in horizontal vent systems must
be certified to UL 1738 for installations in the United States,
ULS636 for installations in Canada. The certified vent
terminal from RBI must also be used.

The maximum equivalent length for the horizontal vent
pipe is 60 feet (19.7 m). Each 90˚ elbow and the intake

air terminal are equal to 10 linear feet (3.3 m) of pipe. To
maximize the performance of single wall sheet metal vent
systems locate 90˚ elbows as far from the boiler as possible
and from one another. For best results, horizontal vent
systems should be as short and straight as possible.

The vent system must be both gas tight and watertight. All
seams and joints in metal pipes must be joined and sealed
in accordance with the vent system manufacturer’s
instructions.

When horizontal vent runs exceed 5 feet (1.5 m) they must be
supported at 3 foot (0.98 m) intervals with overhead
hangers. The vent system must be pitched down, toward the
vent terminal, 1/4" per foot (21 mm per meter). If any part of a
single wall metal vent system passes through an unheated
space it must be insulated with insulation rated for 400˚F.

Horizontal vent systems shall terminate at least 4 feet (1.3
m) below, 4 feet (1.3 m) horizontally from or 1 foot (0.23
m) above any door, window or gravity air inlet into any
building. It must not terminate less than 4 feet (1.3 m)
horizontally from, and in no case above or below, unless
a 4 feet (1.3 m) horizontal distance is maintained, from
electric meters, gas meters, regulators and relief equipment
and not less than 7 feet (2.3 m) from any adjacent public
walkway. The bottom of the vent terminal(s) shall be located
at least 5 feet (1.5 m) above the air intake terminal(s).
Avoid terminal locations likely to be affected by winds,
snowdrifts, people and pets.

3) Vertical/Chimney Vent (Negative Pressure), uses an

approved metal chimney system or masonry chimney.
Combustion air is obtained from the space in which
the unit is installed.

4) Outdoor Installation uses the outdoor option kit.

DIRECT VENT (POSITIVE PRESSURE)

In this configuration the boiler/water heater blower is used
to push the flue products to the outdoors while drawing
combustion air from the outdoors. The Intake Air Option
instructions under the COMBUSTION AIR &
VENTILATION SECTION must be followed! The vent
system must be sized per Table 4.

Table 4 – Direct Vent Pipe Size, Positive Pressure

Model Size Pipe Diameter in.(mm)
500 6 (152)
750 8 (203)
1000 9 (229)
1250, 1500 10 (254)
1750, 1950 12 (305)

Protect building materials and vegetation from degradation
caused by the flue gases.

Vertical Direct Vent Systems – Figure 3

The maximum length for the vertical vent pipe is 30 feet
(19.7m) plus two 90˚ elbows. If any part of a single wall
metal vent system passes through an unheated space it
must be insulated with insulation rated for 400˚F. Structural
penetrations must be made using approved fire-stops.

A listed, nonrestrictive vent cap must be used. The top of
a vertical vent system must extend at least 5
m) above the roof surface that it passes through, 4 feet
(1.3 m) above the intake air cap, see Figure 3.

1

/2 feet (1.8

5

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

In addition the vent system must conform to the dimensions
shown in Figure 3. The penetration point in the roof must
be properly flashed and sealed.

Figure 1– Horizontal Air Intake and Venting for a Single Direct Vent System

The vent system must be gas tight. All seams and joints
in metal pipes must be joined and sealed in accordance
with the vent system manufacturer’s instructions.

Figure 2 – Horizontal Air Intake and Venting for Multiple Direct Vent Systems

6

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

Figure 3 - Vertical Air Intake and Venting for Direct Vent System

Combination Direct Vent Systems – Figure 4

The boiler/water heater can be vented vertically with the
intake air piped horizontally through an outside wall. Follow
the instructions in the Intake Air Option –

Figure 4 – Combination Direct Vent Systems

Horizontal Guidelines on page 4. Also follow the general

instructions in the COMBUSTION AIR & VENTILATION
and GENERAL VENTING GUIDELINES sections.

7

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

SIDE WALL VENT (POSITIVE PRESSURE)

In this configuration the boiler/water heater blower is used
to push the flue products horizontally to the outdoors, see
Figure 5. The air for combustion is taken from the space
in which the unit is installed. The applicable instructions

Figure 5 – Side Wall Venting

under the COMBUSTION AIR & VENTILATION SECTION
must be followed! The vent guidelines under the
Horizontal Direct Vent Systems section must also be
followed.

VERTICAL/CHIMNEY VENT (NEGATIVE
PRESSURE) The Futera II is listed as a Category I

appliance when vented vertically into a listed metal
chimney system or properly sized masonry chimney,
Figures 6 & 7. The chimney must provide a negative
pressure of 0.02 to 0.08 in. W.C. at the boiler/water heater
flue collar with the unit running. A single acting barometric
damper must be attached directly to the flue collar
increaser as shown.

Note: DO NOT remove the damper stops. For proper
operation the damper must remain as single acting.

Multiple Futera II’s can be vented into a single vertical
chimney provided that the breeching and chimney are
properly sized per the latest revision of the National Fuel
Gas Code, ANSI Z223.1.

When more than one appliance is connected to the same
chimney flue the flue must be large enough to safely vent
the combined output of all of the appliances.

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 excessive
levels of carbon monoxide which can cause severe
personal injury or death!

Chimney Inspection & Sizing

A thorough inspection of the masonry chimney must be
performed to ensure that the chimney is clean, properly
con-structed and properly sized. Exterior masonry
chimneys should not be used unless properly lined to
prevent condensation and draft problems. Table 5 lists the
equivalent breeching and flue sizes required for the boiler/
water heater.

Table 5 – Equivalent breeching & chimney size,

Negative Pressure

Model Size Breech & Flue Diameter in (mm)
500 8 (203)
750, 1000 10 (254)
1250, 1500 12 (305)
1750, 1950 14 (356)

Note: These sizes are based on a 20 foot (6.1m) chimney height.

Vent Connections

Locate the boiler/water heater as close to the chimney as
possible. Use the shortest, straightest vent connector
possible for the installation. If horizontal runs exceed 5 feet
(1.5 m) they must be supported at 3 foot (0.9 m) intervals
with overhead hangers. Use a type B, single wall stainless
or single wall galvanized steel vent pipe the same diameter
as the flue collar to connect the boiler/water heater to a
masonry chimney. When using a listed metal chimney
system use the appropriate vent connector.

8

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

The vent system should be sloped up toward the chimney
at a minimum rate of 1/4 inch/foot (2 cm/m). On masonry
chimneys the connector must terminate flush with the
inside of the chimney flue, Figure 7. Fasten each single wall
vent connection with at least 3 corrosion resistant sheet
metal screws.

WARNING
Never install a vent pipe of a diameter different thatn that
of the boiler/water heater's flue outlet. Failure to comply with
this warning can result in excessive levels of carbon
monoxide which can cause severe personal injury or death.

Figure 6 – Vertical Venting with a Metal Chimney System

Always provide a minimum clearance of 6 inches (152 mm)
between single wall vent pipe and any combustible
materials. Type B1 vent may be used, clearance between
it and any combustible material must be as listed.

WARNING
Failure to maintain minimum clearances between vent
connectors and any combustible material can result in a
fire causing extensive property damage, severe personal
injury or death!

9

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

Figure 7 – Vertical Venting using a Masonry Chimney

OUTDOOR VENTING

When installed outdoors the Futera II must be fitted with
the factory supplied outdoor hood, air intake adapter with
filter and exhaust terminal, see Figure 8.

The boiler/water heater must be at least 10 feet (3.2 m)
from any door, window or gravity air inlet into any building
and at least 3 feet (0.98 m) from any overhang unless local
codes dictate differently.

Figure 8 – Outdoor Venting

Do not place the boiler/water heater in a location that would
subject it to runoff from adjacent buildings.

Multiple outdoor units must be spaced as shown in Figure
9 to prevent flue gasses from one unit from being inngested
by an adjacent unit.

Figure 9 – Multiple Outdoor Units

10

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

COMMON VENT SYSTEMS

If an existing boiler/water heater 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/
water heater, 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.

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 toujours raccordés
au système d’évacuation ne fonction-nent pas: système
d’évacuation

a) Seal any unused openings in the common venting system.

Sceller toutes les ouvertures non utilisées du sys­tème d’évacuation.

b) Visually inspect the venting system for proper size and

horizontal pitch and determine there is no blockage or
restriction, leakage, corrosion and other deficiencies
which could cause an unsafe condition.

Inspecter de façon visuelle le système d’évacu-ation
pour déterminer la grosser et l’inclinaison horizontale
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.

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.

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
cigarette, d’un cigare ou d’une pipe.

f) After it has been determined that each appliance

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 previous
condition of use.

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.

g) Any improper operation of the common venting system

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 determined using the
appropriate tables in Appendix F in the National Fuel
Gas Code, ANSI Z223.1/ NFPA 54 and or CAN/CGA
B149 Installation Codes.

c) Insofar as is practical, close all building doors and

windows and all doors between the space in which the
appliances remaining connected to the common venting
system are located and other spaces of the building. Turn
on clothes dryers and any appliance not connected to the
common venting system.Turn on any exhaust fans, such
as range hoods and bathroom exhaust, so they will operate
at maximum speed. Do not operate a summer exhaust
fan for a boiler installation. Close fireplace dampers.

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 système d’évacuation
commun et tous les ventilateurs 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.

d) Place in operation the appliance being inspected. Follow

the lighting instructions. Adjust thermostat so appliance
will operate continuously.

Mettre l’appareil inspecté en marche. Suivre les
instructions d’allumage. Régler le thermostat de façon
que l’appareil fonctionne de façon continue.

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’installation CAN/
CGA-B149. Si la grosseur d’une section du 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 CAN/CGA-B149.

GENERAL PIPING REQUIREMENTS

CAUTION
Improper piping of this boiler/water heater will void
the manufacturer’s warranty and can cause boiler
failure resulting in flooding and extensive property
damage! Excessive water hardness causing scaling
in the copper heat exchanger tubes is NOT covered
under the manufacturer’s warranty, see Table 7.
Excessive pitting and erosion of the internal surface
of the copper heat exchanger tubes is NOT covered
under the manufacturer’s warranty if the result of high
water flow rates, see Table 7. Return water
temperatures below 130˚F will result in heat
exchanger damage from exces-sive condensation
voiding the manufacturer’s warranty, see Primary /
Secondary Piping below.

11

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

NOTE: Shut off valves and unions should be installed
at the inlet and outlet connections of the boiler/hot
water heater to provide for isolation of the unit should
servicing be necessary.

Freeze Protection

This boiler/water heater is CSA designed certified for out­door installation. Outdoor installations in areas where the
danger of freezing exists are not recommended unless
proper freeze protection is provided. The following
precautions MUST be observed:

1. A continuous flow of water through the unit MUST be

maintained! The pump responsible for flow through the
boiler/water heater must run continuously!

2. An ethylene glycol/water mixture suitable for the

minimum temperature that the unit will be exposed to
must be used. The pump must be capable of producing
15% more flow and overcoming a 20% increase in head
loss. Domestic water systems must be isolated from the
water heater by the use of a heat exchanger or other
approved method.

3. If the unit must be shut off for any reason the electric,

gas and water supplies MUST be shut off and the unit
and its pump completely drained.

Flow Switch

The flow switch supplied with the boiler/water heater must
be wired to the terminal strip in the control panel to prevent
the boiler from firing unless there’s adequate water flow
through the unit. The flow switch must be installed in the
supply piping adjacent to the boiler outlet connection.

CAUTION
Failure to properly install the flow switch may result
in damage to the boiler/water heater heat exchanger
voiding the warranty!

HEATING SYSTEM PIPING

General Piping Requirements

All heating system piping must be installed by a qualified
technician in accordance with the latest revision of 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. A minimum
clearance of 1" must be maintained between heating
system pipes and all combustible construction. All heating
system piping must be supported by suitable hangers not
the boiler. The thermal expansion of the system must be
considered when supporting the system. A minimum
system pressure of 12 psig must be maintained.

CAUTION
Improper outdoor installation of this unit can cause
boiler failure voiding the manufacturer’s warranty!

Relief Valve

Pipe the discharge of the pressure relief valve as shown
in Figure 10.

Figure 10 – Relief Valve Piping

WARNING
Never install any type of valve between the boiler/ water
heater and the relief valve or an explosion causing
extensive property damage, severe personal injury or death
may occur!

Heating Boiler Piping Connections

The supply and return connections should be sized to suit
the system, see Table 6.

Table 6 – Supply & Return Pipe Sizing

Model Size Supply Size (in) Return Size (in)
500 thru 1000 2" NPT 2" NPT
1250 thru 1950 2 1/2" NPT 2 1/2" NPT

Pump Requirements

This low mass boiler requires a continuous minimum water
flow for proper operation. The system pump must be sized
to overcome the head loss of the boiler and the heating
system in order to achieve the required temperature rise.
Table 7 provides the heat exchanger pressure drop and
temperature rise figures. The temperature rise across the
boiler must never exceed 35˚F (17˚C). The pump should
be wired to run continuously unless the optional pump
delay is installed. The adjustable pump delay turns the
pump on each time the burner fires and runs the pump for
6 to 600 seconds after the call for heat is satisfied.

CAUTION
A temperature rise listed in Table 7 indicates that the
flow rate through outside of the range the heat
exchanger is incorrect which will damage the heat
exchanger voiding the warranty! The maximum
allowable flow rate through a Futera II boiler is 75 GPM
on 500 through 1000 models and 110 GPM for 1250
through 1950 models. If higher flow rates are required
the optional Cupro-Nickel heat exchanger should be
considered.

12

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

Table 7 – Temperature Rise Table

Model

Size

500

750
1000
1250
1500
1750
1950

* Exceeds maximum recommended flow rate. Use a higher temperature rise or consult factory.

GPM

42
64
85

106
127*
149*
166*

Flow

L/s

2.6

4.0

5.4

6.7

8.0

9.4

10.0

Temperature Rise Across Heat Exchanger

20˚F 25˚F

Pressure

Drop

feet

1.0

2.4

4.0

3.6

5.6

8.3

10.4

kPa

2.9

7.2

12.0

11.0

17.0

25.0

30.0

GPM

34
51
68

85
102
119
133

Flow

2.1

3.2

4.3

5.4

6.4

7.5

8.4

Pressure

Drop

L/s feet

0.7

1.5

2.6

2.3

3.6

5.3

6.6

kPa

2.0

4.6

7.7

6.9

10.8

15.8

19.9

GPM

42
57
71
85
99

110

Flow

L/s

2.6

3.6

4.5

5.4

6.2

7.1

30˚F

Pressure

Drop

feet

1.1

2.2

1.7

2.6

3.9

5.6

kPa

3.3

6.6

5.1

7.8
12
17

Low Water Cutoff

If a boiler is installed above any radiation elements it must
be fitted with a low water cutoff device.

Expansion Tank & Air Separator

An expansion tank or other means to control thermal
expan-sion must be installed in the heating system. An
expansion tank must be installed close to the boiler on the
suction side of the pump. An air scoop and automatic air
vent must also be installed to eliminate air trapped in the
system.

Primary/Secondary Piping

Boilers connected to heating systems using zone valves,
zone pumps, or systems that have excessive flow rates or

Figure 11 – Typical Primary/Secondary Piping System

return water temperatures less than 110˚F (43˚C) must be
isolated from these systems to protect the boiler.

Variable Water Flows

Figure 11 shows a typical primary/secondary piping
system. A dedicated pump is used to maintain a constant
water flow through the boiler. This secondary pump is sized
to overcome the head loss of the boiler and secondary
piping system while supplying the flow rate required to
maintain the desired temperature rise across the boiler.
The primary pump is sized to provide the required flow to
the heating system. The secondary piping connections to
the primary system piping must not be more than 12" apart
to ensure zero pressure drop in the primary system, see
Figure 11.

13

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

Low Return Water Temperatures

To prevent the problems associated with condensation of
the products of combustion due to low return water
temperatures a primary/secondary piping system with a
bypass and bypass valve must be installed, see Figure 12.
The bypass and bypass valve must be sized the same as
the secondary piping. A balancing valve must also be
installed in the supply side of the secondary piping
downstream of the bypass.

Figure 12 – Low Temperature Piping

The balancing valve should be adjusted to divert some of
the heated discharge water into the return water until the
required inlet water temperature is achieved. The primary
and secondary pumps should be sized to provide the
required flow through each system. The secondary piping
connections to the primary system piping must not be more
than 12" apart to ensure zero pressure drop in the primary
system, see Figure 12.

Multiple Boiler Systems

Systems using multiple boilers can also be installed using a primary/secondary manifold system, Figure 13.

Figure 13 – Multiple Boiler Piping

14

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

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 14.

Figure 14 – Chilled Medium Piping

NOTE:
The storage tank must be located as close to the water
heater as possible to prevent excessive head loss
which will reduce flow.

Water Chemistry

The required temperature rise across the water heater is
based on water having a hardness between 8 and 18
grains per gallon with a level of dissolved solids not
exceeding 350 ppm. Water having a hardness less than
8 grains can cause excessive corrosion of the heat
exchanger. Water that has a hardness greater than 18
grains per gallon and/or a level of dissolved solids
exceeding 350 ppm will require a recalculation of the pump
size and temperature rise. A Cupro-Nickel heat exchanger
may also be required. The manufacture should be
consulted when these water conditions are encountered.

Expansion Tank

An expansion tank or other means to control thermal
expansion must be installed in the water heating system
if back flow prevention devices are installed.

Pump Requirements

This low-mass water heater requires a continuous mini­mum water flow for proper operation. The factory supplied
circulating pump has been sized to overcome the head loss
of the water heater plus a 30 foot piping loop under normal
water conditions.

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.

DOMESTIC WATER SUPPLY PIPING

CAUTION
Proper controls must be used to prevent water
supplied for domestic use from exceeding 130˚F (54˚C)
or a scald injury will occur! When higher water tem­peratures are required for appliances such as a
dishwasher, a mixing valve or some other tempering
means must be installed. Households with small
children may require water temperatures less than
120˚F (49˚C). Local codes must be complied with!

General Piping Requirements

Ensure that the water heater is equipped with bronze
headers. Piping and components connected to the water
heater must be suitable for use with potable water. The
water heater must not be connected to any heating system
piping or components previously used with a non-potable
water heating appliance. No toxic chemicals, such as
those used for boiler treatment, are to be introduced into
the potable water used for space heating. If a hot water
storage tank is used in the system it must be equipped
with a temperature and pressure relief valve that complies
with ANSI Z21.22 or CAN-4.4 and CAN-4.6.

Table 7 provides the heat exchanger pressure drop chart
and temperature rise table. The temperature rise across
the water heater must never exceed 30˚F (17˚C).

CAUTION
The pump should be wired to run continuously unless
the optional pump delay is installed. If the pump delay
is used a tank-mounted aquastat must be wired to the
remote operator terminals in the control box and
adjusted so it acts as the primary operator.

Cold Water Supply

The cold water supply must be piped to the water heater’s
outlet piping between the water heater and the hot water
storage tank. This will prevent untempered water from
entering the water heater, see the TEMPERATURE RISE
CONTROL section below. Two typical water heating
systems are shown in Figures 15 & 16.

Temperature Rise Control

Water returned to the water heater inlet must not be less
than 130˚F (54˚C) or excessive condensation of the
products of combustion will damage the water heater
voiding the warranty. The method outlined below can be
employed to prevent this condition from occurring.

A balancing valve should be installed on the outlet side of
the water heater for purposes of adjusting the flow rate
through the heat exchanger. Thermometers are installed
on both the inlet and outlet of the water heater for
determining the temperature rise through the unit.

15

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

The proper velocity through the water heater must be
maintained in accordance with Table 7 for efficient
operation and long life. If the temperature rise through the
water heater is lower than recommended the water velocity
is too high. Premature erosion of the heat exchanger will
occur. Conversely, if the temperature rise is higher than
recommended in Table 5 the flow rate is too low. Scaling
and softening of the heat exchanger will occur.

Figure 15 – Typical Water Heating Piping

Thermostatic Mixing Valve– Water Above 140˚F (60˚C)

Water can be stored a temperatures above 140˚F (60˚C)
provided that a thermostatically controlled mixing valve is
used to temper the hot water to an acceptable temperature
before it’s supplied for domestic use. The mixing valve
MUST be set to prevent a scald injury from occurring, see
the caution against scalding above. Storage of water for
domestic use above 140˚F (60˚C) will provide an increased
quantity of tempered water and help prevent the growth of
water born bacteria.

Figure 16 – Multiple Water Heating Piping

16

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

GAS SUPPLY PIPING

WARNING
Check the boiler/water heater rating plate to make sure that
the boiler/water heater is for the type of gas that will be
used. If it isn’t, do not connect the boiler/water heater to
the gas supply. Failure to comply with this warning can
result in extensive property damage, severe personal injury
or death!

The Futera II comes from the factory ready to be piped to
the gas supply. If for any reason the boiler/water heater is
not for the type of gas available at the installation site, call
your RBI Water Heaters representative to resolve the
problem.

Table 8 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 8 should be used
in conjunction with Table 9 to ensure that the gas supply
piping has the capacity to meet the demand.

Figure 17 depicts the proper way to connect the boiler/
water heater to the gas supply piping. The manual shut­off valve MUST be installed in the supply piping. It should
be installed 5 feet above the floor where required by local
codes. Provide a sediment trap at the bottom of the vertical
section of the gas supply pipe upstream of the gas controls.

Figure 17 – Gas Supply Piping

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 or gas valve failure
may result!

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.

Table 8 – Gas Pipe Capacity

Maximum pipe capacity in ft3/hr based on 0.60 specific gravity gas
at a pressure of 0.5 psig or less and a 0.3" WC pressure drop.

Nominal
Iron Pipe
Size, (in)

1"
1 1/4"
1 1/2"

2"

Note: Multiply the gas volume by 0.62 for propane flow capacity in ft3/hr.

Multiply the propane flow capacity by 2500 Btu/ft3 to determine
the propane Btu/hr capacity for a given pipe size and length.

10

520
1050
1600
3050

20

Maximum gas volume of pipe, (ft3/hr)

350

730
1100
2100

Pipe length in feet

30

40

285

245

590

500

890

760

1650

1270

50

215
440
670

1270

60

195
400
610

1150

80

170
350
530
990

100

150
305
460
870

150

120
250
380
710

Table 9 – Equivalent Pipe Length Chart

Nominal

Iron Pipe

Size, (in)

1"
1 1/4"
1 1/2"

2"

Notes: 1. For flow through branch.

90˚ Elbow

2.6

3.5

4.0

5.2

2. For flow at full open.

Type of pipe fitting

1

Te e

Equivalent pipe length, (ft)

5.2

6.9

8.0

10.3

Gate Valve

0.6

0.8

0.9

1.2

2

Gas Clock

1.5

1.9

2.3

3.0

When applicable, provisions for vent, bleed and gas relief
lines must be made in accordance with the latest revision
of ANSI Z223.1.

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!

Whenever the gas supply piping is pressure tested the
boiler/water heater gas controls must be protected. If the
test pressure is equal to, or less than 1/2 psig (3.5 kPa)
isolate the boiler/water heater by closing it’s manual shut
off valve, see Figure 16. If the test pressure is greater than,
or equal to 1/2 psig (3.5 kPa), disconnect the boiler/water
heater and its individual shut-off valve.

ELECTRICAL WIRING

2

CAUTION
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation! Verify proper operation after
servicing.

17

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

ATTENTION.
Au moment de l’entretien des commandes, étiquetez
tous les fils avant de les débrancher. Des erreurs de
câblage peuvent entraîner un fonctionnement
inadéquat et dangereux. S’assurer que l’appareil
fonctionne adéquatement une fois l’entretirn terminé.

Electrical Power Connections

The electrical connections to this boiler/water heater 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/water
heater. A properly rated shut-off switch should be located
at the boiler/water heater. The boiler/water heater must be
grounded in accordance with the authority having
jurisdiction, or if none, the latest revision of the National
Electrical Code, ANSI/NFPA-70.

Line voltage field wiring of any controls or 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. Use
appropriate wiring materials for units installed outdoors.

Refer to the wiring diagram supplied with the boiler/water
heater for proper wiring connections.

BOILER/WATER HEATER OPERATION

WARNING
Before proceeding read and fully understand the instruc­tions contained in this manual. Do not attempt to operate
this boiler/water heater if it has not been installed in
accordance with the guidelines set forth in this manual.
Failure to comply with this warning can result in extensive
property damage, severe personal injury or death!

Should overheating occur or the gas supply fail to shut off,
turn off the manual gas control valve to the appliance. Do
Not interrupt water flow through the boiler/water heater.

En cas de surchauffe ou si l’alimentation en gaz ne s’arrête
pas, fermez manuellement le robinet d’arrêt de l’admission
de gaz.

Hydronic Heating Boilers

Open the make-up water valve and slowly fill the boiler and
all of the radiation with water. Ensure that all bleed and
drain valves are closed.

valves. If strainers are used in the system piping the make- up
water valve should be closed and the strainers checked
and cleaned.

The system expansion tank should be checked to ensure
that the correct water level in the tank is maintained. The
tank should less than half full of water with the system full
and adjusted to the correct operating pressure.

Start the boiler as described in the LIGHTING
INSTRUCTIONS below. Run the boiler for at least an hour.
The system pump(s) and all radiation units must be
operated during this time. Ensure that the make-up water
valve is open.

Shut the boiler off and open the bleed valves to purge the
air trapped in the heating system piping. Close the make­up water valve and check and clean the strainers and
make-up water pressure reducing valve.

Open the make-up water valve and adjust the system
pressure if necessary.
The system should be checked and bled after three days
of operation.

OPERATING INSTRUCTIONS

FOR YOUR SAFETY READ BEFORE OPERATING.
POUR VOTRE SÉCURITÉ LISEZ AVANT DE METTRE EN
MARCHE

A. This appliance is equipped with an ignition device

which automatically lights the pilot. Do not try to light
the pilot by hand.

Cet appareil est muni d’un dispositif d’allumage qui
allume automatiquement la veilleuse. Ne tentez pas
d’allumer la veilleuse manuellement.

B. BEFORE OPERATING 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.

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.

• If you cannot reach your gas supplier, call the fire
department.

Adjust the make-up water pressure regulator so a minimum
12 psig system pressure is maintained at the highest point
in the system piping. If a make-up water pump is used
adjust it to maintain a minimum 12 psig system pressure.

Open the system bleed and drain valves, one at a time, to
purge the air trapped in the heating system piping.

With the boiler off, run the system pump for at least 30
minutes and bleed the system piping using the bleed

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.

18

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

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.

• Appelez immédiatement votre fournisseur de gaz

depuis un voisin. Suives les instructions du fournisseur.

• Si vous ne pouvez rejoindre le fournisseur, appelez le
service de incendies.

C) 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.

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.

CAUTION
To prevent being burned, stand clear of the boiler
during ignition and don’t touch any hot metal parts!

Operating Instructions

1. STOP! Read the safety information above. If, at any
time, the appliance will not operate properly, follow the
instructions “TO TURN OFF GAS TO APPLIANCE “
and call your service technician or gas supplier.

2. Set the operating control or thermostat to off or its
lowest setting.

3. Turn off all electric power to the appliance.

4. Close the manual main and pilot gas shut-off valves.

5. Wait five (5) minutes to clear out any gas.

6. Connect a manometer having a minimum capacity of
20” 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.

7. Open the manual pilot valve.

8. Turn on all electric power to the boiler.

9. Set the operating control or thermostat to the desired
setting.

10. The pilot should automatically light. Do not try to light
the pilot by hand!

11. With the pilot lit, open the main gas shut-off valve.

12. The burner should light with proper boiler operation.

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.

7. Ouver la vanne manuelle d’arrêt d’alimintation de gaz.

8. Mettez l’appareil sous tension.

9. Réglez le thermostat à la température désirée.

10. Si l’appareil ne se met pas en marche, suivez les
instructions intitulées «Comment couper l’admission de
gaz de l’appareil» et appelez un technicien qualifié ou
le fournisseur de gaz.

TO TURN OFF GAS TO APPLIANCE

1. Set the operating control or thermostat to its lowest
setting.

2. Turn off all electric power to the appliance if service is
to be performed.

3. Close the manual main and pilot gas shut-off valves.

COMMENT COUPER L’ADMISSION DE GAZ DE
L’APAREIL

1. Réglez le thermostat à la température la plus basse.

2. Coupez l’alimentation électrique de l’appareil s’il faut
procéder à l’entretien.

3. Fermer la vanne manuelle d’arrêt d’alimintation de gaz.

CHECKING, ADJUSTMENT & OPERATION

Pilot Regulator Settings

Confirm that the pilot pressure regulator is set within one
turn of its maximum setting for natural gas. For LP gas the
pilot pressure regulator should be set within one turn of
its minimum setting.

Spark Gap

With the main and pilot gas manual valves in the closed
position energize the unit. Observe the trial for ignition to
confirm that the spark is strong and continuous. If not check
and adjust the spark gap as shown in Figures 18 &19.

Figure 18 – Spark Gap & Pilot Flame

INSTRUCTIONS DE MISE EN MARCHE

1. ARRÊTEZ! Lisez les instructions de sécurité sur la
portion supérieure de cette étiquette.

2. Réglez le thermostat à la température la plus basse.

3. Coupez l’alimentation électrique de l’appareil.

4. Cet appareil est muni d’un dispositif d’allumage qui
allume automatiquement la veilleuse. Ne tentez pas
d’allumer la veilleuse manuellement.

5. Fermer la vanne manuelle d’arrêt d’alimintation de gaz.

6. 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

19

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

Figure 19 – Spark Rod Position Detail

Pilot Operation

With the manual main gas valve and manual pilot gas valve
closed energize the unit and allow it to try for ignition until
it goes into flame failure. The trial for ignition indicator light
should illuminate immediately after the trial for ignition
starts and stay on for approximately 15 seconds. The trial
for ignition indicator light should go out and the flame failure
indicator light illuminate immediately after flame failure.
Open the manual pilot gas valve. A normal pilot ignition
sequence should take place within 6 minutes of the initial
flame failure. The trial for ignition indicator light should stay
on. Recycle the pilot several times to confirm reliable
operation.

CAUTION
Never force the regulator adjustment screw beyond the
stop limits or damage to the regulator will occur!

TABLE 10 – Pressure Settings

Model Natural Gas. LP Gas
Size Low Hi Low Hi

(in. w.c.) (in. w.c.)
500 n/a 3.0 n/a 7.0
750 n/a 3.0 n/a 7.0
1000 n/a 3.0 n/a 7.0
1250 2.4 3.0 6.0 7.0
1500 2.4 3.0 6.0 7.0
1750 2.4 3.0 6.0 7.0
1950 2.4 3.0 6.0 7.0

3. When fire tested at the factory the unit’s input was

rated and the gas pressure(s) recorded on the test
label affixed to the jacket next to the junction box. To
confirm the input of the unit follow the instructions in

INPUT RATE section below. The gas pressure

the
setting(s) for dual fuel units may vary; refer to the test
label on the unit.

4. An undiluted flue gas sample must be taken at the flue

outlet using a calibrated flue gas analyzer. Allow the
unit to run for 15 minutes before taking the sample.
For a natural gas unit the low fire CO2 reading should
be 6.7% - 7.0%. The hi fire CO2 reading must be 7.7%

-8.0%. Exceeding 8.0%. CO2 will shorten the life of the
burner. An LP unit will have CO2 readings
proportionally higher. Adjust the inlet air damper to
achieve the correct CO2 readings.

Pilot Adjustment

The pilot burner flame should be well defined and 2" to 2
1/2" above the surface of the burner, Figure 18. To adjust
the pilot the following steps must be taken:

1. Remove the pilot gas pressure regulator cap.

2. Turn the pressure regulator adjustment screw clock­wise to increase the flame and counterclockwise to
decrease it.

3. Replace the pressure regulator adjustment screw cap.

Fire Testing

1. For an on/off unit confirm that the low-fire side of the
two-stage gas valve is set to its maximum setting.

For a two-stage unit a 1/16" thick silicon spacer should
be installed under the lo-fire adjusting screw. Without
this spacer it won’t be possible to consistently set the
low-fire pressure to 2.4" w.c.

2. Follow the instructions in the OPERATING
INSTRUCTIONS section starting on page 18 to fire the
main burner. Upon ignition of the main burner adjust
the high fire adjusting screw to obtain the hi fire
pressure listed in Table 10. On a two-stage unit
disconnect the power from the high fire side of the gas
valve and adjust the low fire regulator. If the unit short
cycles on low fire adjust the air box pressure and gas
back pressure as outlined below.

5. If the pressure setting(s) vary from those in the table
list them on the test label affixed to the jacket next to
the junction box.

6. To test the ignition safety shutoff device, close the
manual shutoff valve in the gas supply line. Within 5
seconds of main burner flame extinction, the main gas
valve solenoid should close with an audible noise. After
15 seconds the module should lockout and the trial for
ignition end. After 5 minutes a second trial for ignition
should occur. Open the manual shutoff valve in the gas
supply line and reset the ignition control system. A
normal ignition sequence should take place. If the
burner hasn’t lit after the last ignition try, the gas valve
will close and the system will go into lock out. Inspect
the ignition system to determine what the problem is.

7. With the main burner in operation, close the manual
firing valve. As soon as the main burner flames go
out, open the manual firing valve. A normal ignition
sequence should take place. If the burner fails to light
the system will make one more ignition attempt.

8. With the burners in operation, interrupt the power to
the control circuit by lowering the operating control or
thermostat. The main burners should go out. Reset the
operating control or thermostat, a normal ignition
sequence should follow.

20

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

Air Box Pressure

Connect a manometer to the air box pressure tap located
behind the control cover, Figure 20.

Figure 20 – Air Box Pressure Tap

Table 11 lists the factory settings for the air box pressure
and gas back pressure that were set using a minimum
length of vent pipe. It may be necessary to adjust the air
shutter on the blower to achieve accep-able combustion
readings for certain installations.

If vented vertically ensure that the barometric damper is
capable of maintaining the air box pressure listed in Table

10. An air box pressure lower that that listed in Table 10
can significantly reduce the life of the burner.

Long horizontal vents will result in an air box pressure
higher that that listed in Table 10. It may be necessary to
open the air damper to obtain the correct combustion
settings.

Gas Back Pressure

Connect a manometer to the gas pressure test port
upstream of the firing valve, Figure 21. Close the manual
shut off valve for the pilot gas. Ensure that the firing valve
is in the open position. Energize the unit and allow it to try
for ignition until it goes into flame failure. If the gas back
pressure is significantly different from that listed in Table
10 the air/gas mixing tube may be misaligned.

TABLE 11 – Pressure Settings

Model Air Box Pres. Gas Back Pres.
Size (in. w.c.) (in. w.c.)
500 1.3 0.3
750 2.0 0.6
1000 3.0 0.6
1250 2.0 0.3
1500 2.5 0.3
1750 2.8 0.3
1950 3.2 0.3

Input Rate, Natural Gas

Gas appliances are rated based on sea level operation with
no adjustment required at elevations up to 2000 feet. At
elevations above 2000 feet, input ratings should be reduced
by 4% for each 1000 feet 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/water heater.

2. Call your gas supplier and ask for the heating value
of the gas.

3. Start the boiler/water heater and let it run for 15
minutes.

4. Using the gas meter and a stopwatch, clock the time
that it takes to burn 10 cubic foot of gas and divide
this time by 10.

5. Insert the heating value and the time, in seconds, into
the formula below.

6. Input = (heating value, Btu/hr)(3600)/(time, seconds)

7. If the computed rate deviates by more than 5% from
the rated input value of the unit adjust the manifold
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 of main burner orifices. If the input rate is
too high, go to the next smaller size.

CAUTION
Never increase the input to the boiler/water heater
above that for which it is rated. Doing so can cause
premature failure of the boiler!

Figure 21 – Air Adjustment & Gas Pressure Test Port

Low Water Cutoff

If installed, ensure that the low water cutoff device(s)
function properly. Test in accordance with the
manufacturer’s instructions included with the device(s).

Boiler Thermostat

If a thermostat is to be used to control the boiler always
follow the instructions included with the thermostat. 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.

21

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

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.

Water Heater Operation Controls

The operating control on the water heater is set to its lowest
setting when the water heater leaves the factory. The
preferred control setting for potable hot water is 130˚F. The
operating control should be set to the lowest setting that
will satisfy the consumer’s needs. The water heater high
limit should be set a minimum of 40˚F (22˚C) higher than
the operating control. Refer to the HOT WATER SUPPLY
section for the proper supply water temperature.

WARNING Setting the thermostat or operation control too
high can result in scalding resulting in severe personal
injury!

Allow the unit to cycle on the operator. The temperature
rise across the heat exchanger must not exceed 30˚F.

DIAGNOSTICS

The Futera II has a number of indicator lights that are
intended to display the sequence of operation. The lights
also serve to point out possible problem areas should the
unit fail to operate. The function of each light is listed below.

Power On: Indicates that power is being supplied to the
unit.

Operator: Indicates that there is a call for heat.

High Limit: Stays lit until a call for heat has been satisfied
or the outlet temperature exceeds the safety setting on the
high limit during a call for heat.

Water Flow: Illuminates when proper water flow exists
during a call for heat.

Air Flow: Illuminates when proper combustion airflow has
been established.

Trial Ignition: Illuminates whenever the pilot gas valve is
energized.

Main Burner: Illuminates whenever the main gas valve is
energized.

Flame Failure: Illuminates whenever the ignition control is
unable to establish a pilot flame within the trial for ignition
period.

MAINTENANCE

WARNING
Disconnect electrical power and close the manual gas shut
off valve before performing maintenance or severe personal
injury may result!

CAUTION
Servicing, inspection and adjustment must be done by
a trained technician in accordance with all applicable
local and national codes. Improper servicing or
adjustment can damage the boiler /water heater!

The boiler/water heater must be cleaned and inspected at
least once a year and before each heating season. Make
sure that the burner and ignition components are free from
dust, soot, dirt, corrosion or other deposits that would
impair the boiler/water heater ‘s performance. Refer to
page 25 for component identification.

CAUTION
Improper burner servicing can result in premature
burner failure voiding the warranty!

Burner Removal & Inspection

1. Close the manual shutoff valves in the gas supply lines
and turn off electrical power to the boiler/water heater.

2. Remove the jacket top panel.

3. Remove the combustion chamber top panel.

4. Remove the air gas mixing tube.

5. Disconnect the pilot tubing and ignition/sensing lead
from the burner.

6. Remove the four nuts that attach the burner to the heat
exchanger.

7. Carefully lift the burner out of the unit.

8. Inspect the burner for damage or signs of deteri­oration. Use a brush or compressed air to remove any
debris from the burner ports.

9. DO NOT install a damaged or badly corroded burner,
replace it.

10. Install the burner making sure that the burner gasket
is not torn or deteriorated. If it is replace it.

11. Reassemble the unit following the removal steps in
reverse order.

Heat Exchanger Inspection

1. Close the manual shutoff valves in the gas supply lines
and turn off electrical power to the boiler/water heater.

2. Remove burner following the instructions in the Burner
Removal & Inspection section.

3. Remove the front jacket panel and combustion
chamber door.

4. Inspect the inside and outside of the heat exchanger
for signs of damage, sooting or corrosion.

5. The outside surfaces of the copper tubes should be
free of any soot deposits. A slight black smudge is
normal with some types of gases. Black soot indicates
poor combustion. Green deposits indicate
condensation due to low return water temperatures. In
either case the heat exchanger must be cleaned
thoroughly and the problem resolved before the boiler/
water heater is returned to service.

6. If there are no signs of damage, sooting or corrosion
reassemble the unit following the previous steps in
reverse order.

7. A badly corroded or damaged heat exchanger must
be replaced, see the Heat Exchanger Repair &
Replacement section.

22

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

Heat Exchanger Cleaning

1. Close the shut off valves in the inlet and outlet piping.
On heating systems close the system fill valve and
relieve the system pressure from the boiler by carefully
lifting the relief valve or opening the drain valve.

2. Disconnect the boiler/water heater from the system
piping.

3. Remove the eight bolts on the rear pipe enclosure
panel.

4. Remove the front jacket panel and combustion
chamber door.

5. Slide the heat exchanger out of the unit.

6. Remove the “V” baffle straps and “V” baffles.

7. Thoroughly clean the heat exchanger with water from
a high-pressure hose. Use a soft bristle brush if
necessary.

8. Replace the cleaned heat exchanger and other
components in the reverse order of their removal.

Heat Exchanger Repair & Replacement

1. A leaking or otherwise damaged tube(s) can be
replaced as outlined in steps 2 through 8.

2. Remove the heat exchanger from the boiler/water
heater as outlined in the Heat Exchanger Cleaning
section.

3. Remove the pipe plugs from the inlet/outlet and return
headers opposite from the ends of the tube(s) being
replaced.

4. Carefully cut the damaged tube(s) in half taking care
not to damage the adjacent tubes.

5. Install and swage in place the new tube(s).

6. Replace the pipe plugs using a suitable tread sealant
on each one.

7. Sagging or distorted heat exchanger tubes are an
indication of low water flow through the system. A
damaged heat exchanger must be replaced and the
condition that caused the damage resolved before the
boiler/water heater is returned to service.

8. Replace the heat exchanger and other components in
the reverse order of their removal.

4. The relief valve should not weep or discharge water
at normal system pressure. If it does contact a
qualified service technician to have it inspected.
NEVER try to clean or repair the relief valve! If the
valve fails to operate properly, have it replaced!

5. The aquastat high limit controls the maximum water
temperature in the boiler. It is adjustable from 140°F
(60˚C) to 250°F (121°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 250°F (121°C). The
aquastat high limit cannot be repaired. If it fails to
function properly replace it.

6. Visually check the pilot and main burner flames to
ensure proper operation, see Figures 18 & 22.

WARNING
A yellow, floating flame indicate a lack of combustion air.
Do not operate the boiler/water heater until the problem
is solved or severe personal injury or death may occur!

Figure 22 – Main Burner Flame

Air Intake & Vent System

Thoroughly inspect the air intake and vent systems for any
signs of blockage, corrosion or leakage. Immediately
replace any unsound vent system piping. Inspect the air
filter and wash with warm water and soap if dirty.

Controls

Use the BOILER/WATER HEATER OPERATION and
CHECKING AND ADJUSTMENT sections of this manual
for reference.

1. Check the thermostat or operating controls for proper
operation.

2. A float type low water cutoff device must be flushed
out per the manufacturers’ instructions. The probe on
a probe low water cut off must be removed, cleaned
and inspected at least once a year. Ensure that the
low water cutoffs operate properly. In not, replace
them.

3. The flow switch contacts must be open when water
flow is not present.

23

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

TROUBLE-SHOOTING

OPERATIONAL PROBLEMS

1. The “Power On” light doesn’t illuminate.

2. The “Power On” light illuminates, a call for heat is

initiated, but the blower does not purge.

3. The “Water Flow” indicator light does not illuminate.

CORRECTIVE ACTION

Ensure that proper voltage is being supplied to the unit.
Inspect the circuit breaker for the boiler/water heater circuit.
Check the light.
Ensure that the power switch operates properly and is
wired correctly.
Check the transformer for proper operation.

Confirm that the blocked flue switch connections are
correct.
Confirm that 24 volts is present on the power on time
delay relay initiate contact.
Confirm that 110 volts is present on the power on time
delay relay switching contact.
Inspect the blower for defects.

Check the light.
Ensure that the boiler/water heater has been completely
purged of air.
Ensure that the pump is operating properly/rotating in the
proper direction.
Ensure that all system valves are in the correct position
and that no restrictions in the piping are present.
Confirm that the flow switch is wired correctly and
functions properly.

4. The “Air Flow” indicator light does not illuminate.

5. The “Trial for Ignition” indicator light does not illuminate

after the prepurge cycle.

6. The “Burner On” indicator light does not illuminate.

7. The “Trial for Ignition” indicator light illuminates, but the

igniter does not spark.

8. The “Burner On” ignites, but the natural gas high fire

manifold pressure is less than 2.5 in. W.C.

Check the light.
Inspect the vent and air intake systems to ensure that
blockages are not present.
Ensure that the vent and air intake systems conform to
the guidelines in this manual.
Confirm that the blocked flue switch connections are
correct and that it is functioning properly.
Ensure that the blower air inlet damper & pressure switch
are adjusted for the correct air box pressure.

Check the light.
Confirm that the ignition module is not in a lock out mode.
Check the pilot off time delay relay.
Confirm that the ignition module is functioning properly.

Check the light.
Confirm that the indicator light is properly wired.

Confirm that the ignition module is properly wired.
Confirm that the ignition lead isn’t grounded out.
Inspect the igniter and ensure that the spark gap is
correct.
Ensure that the ignition module is properly grounded.

Ensure that at least the minimum inlet pressure is
supplied at the inlet of the gas valve.

9. The Boiler/Water Heater rumbles on start up.

Ensure that the burner is set up per the CHECKING,
ADJUSTMENT & OPERATION section.
Ensure that the unit is properly vented.

24

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

Figure 23 – Exploded View

25

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

Futera II Model Size with Item Quantities Below

Ref # Name of Part Part # 500 750 1000 1250 1500 1750 1950

1 Base Panel Assembly 70-2163 1 1 1

70-2164 1111

2 Base Panel Heat Exchanger Legs 03-1599 1 1 1

03-1600 1111

3 Combustion Chamber Rear/Side Panel Assy 70-2144 1

70-2145 1
70-2146 1
70-2147 1
70-2148 1
70-2149 1
70-2150 1

4 Combustion Chamber Top Panel 03-1552 1 1 1

03-1553 1111

5 Rear Pipe Enclosure Panel Assembly 70-2108 1 1 1

70-2109 1111

6 Lower Rear Jacket Panel 03-1516 1

03-1517 1
03-1518 1
03-1519 1
03-1520 1
03-1521 1
03-1522 1

7 Left Jacket Panel 03-1523 1

03-1524 1
03-1525 1
03-1526 1
03-1527 1
03-1528 1
03-1529 1

Right Jacket Panel 03-1530 1

03-1531 1
03-1532 1
03-1533 1
03-1534 1
03-1535 1
03-1536 1

8 Rear Pipe Enclosure Panel Assembly 70-2108 1 1 1

70-2109 1111

9 Air/Gas Mixing Tube Assembly 70-2183 1 1 1

70-2184 1111

10 Upper Rear Jacket Panel 03-1509 1 1 1

03-1510 1111
11 Manifold Flange Screw 57-0012 8 8 8 8888
12 Main Gas Orifice 10-0058 1

10-0059 1

10-0060 1

10-0061 1

10-0062 1

10-0063 1

10-0064 1

26

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

Futera II Model Size with Item Quantities Below

Ref # Name of Part Part # 500 750 1000 1250 1500 1750 1950

13 Jacket Gasket Material, 25 feet 66-0101 1 1 1 1111
14 Gas Train Support Bracket 03-1639 1 1 1 1111
15 Fan Assembly 70-2200 1 1 1

70-2201 1 1

70-2202 1 1
16 Firing Valve, 1" 11-0456 1 1

Firing Valve, 1 1/4" 11-0457 1 1 1
Firing Valve, 1 1/2" 11-0458 1 1

17 Main Gas Valve, HW V88A, 1" 11-0156 1 1

Main Gas Valve, HW V88A, 1 1/4" 11-0157 1 1 1
Main Gas Valve, HW V88A, 1 1/2" 11-0158 1 1

18 Main Gas Valve, V8944B, 1" 11-0171 1 1

Main Gas Valve, V8944B, 1 1/4" 11-0172 1 1 1

Main Gas Valve, V8944B, 1 1/2" 11-0173 1 1
19 Pilot Regulator, RV12LT 11-0041 1 1 1 1111
20 Pilot Valve, 24 V Solenoid 11-0017 1 1 1 1111
21 Pilot Valve, Manual 11-0031 1 1 1 1111
22 “A” Valve, 1" 11-0451 1 1

“A” Valve, 1 1/4" 11-0452 1 1 1

“A” Valve, 1 1/2" 11-0453 1 1

23 Pressure Switch Tubing 06-0052 1 1 1

06-0053 1111
24 Blocked Flue Switch 14-0052 1 1 1 1111
25 Inlet Air Orifice Assembly 70-2203 1 1 1

70-2204 1111
26 Top Jacket Panel 03-1507 1 1 1

03-1508 1111
27 Top Panel View Port Frame 20-0003 1 1 1 1111

Top Panel View Port Glass 20-0004 1 1 1 1111

28 Operator, G1P-9868, FW, On/Off 14-0116 1 1 1 1111

Operator, G1P-9870, FB, On/Off 14-0118 1 1 1 1111
Operator, L6008G-1009, FW/FB, 2 Stage 14-0107 1 1 1 1111

29 Indication Lights, 24 Volt Green 48-0451 1 1 1 1111

Indication Lights, 24 Volt Red 48-0453 7 7 7 7777
Indication Lights, 125 Volt Green 48-0452 1 1 1 1111
Indication Lights, 125 Volt Red 48-0454 7 7 7 7777

30 Hi Limit, G1P-9868, Canadian FW 14-0117 1 1 1 1111

Hi Limit, G1P-9870, Canadian FB 14-0118 1 1 1 1111
Hi Limit, L4008E-1313, American FW 14-0105 1 1 1 1111
Hi Limit, L4008E-1040, American FB 14-0104 1 1 1 1111

31 Thermometer 14-0005 1 1 1 1111

27

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

Futera II Model Size with Item Quantities Below

Ref # Name of Part Part # 500 750 1000 1250 1500 1750 1950

32 Light Package Assy, Plain - 24 V 70-2113 1 1 1

Light Package Assy, Plain - 24 V 70-2114 1111
Light Package Assy, w/ Operator - 24 V 70-2115 1 1 1
Light Package Assy, w/ Operator - 24 V 70-2116 1111
Light Package Assy, w/ High Limit - 24 V 70-2117 1 1 1
Light Package Assy, w/ High Limit - 24 V 70-2118 1111
Light Pkg. Assy., w/ OP & H L - 24 V 70-2119 1 1 1
Light Pkg. Assy., w/ OP & H L - 24 V 70-2120 1111
Light Package Assy, Plain - 120 V 70-2121 1 1 1
Light Package Assy, Plain - 120 V 70-2122 1111
Light Package Assy, w/ Operator - 120 V 70-2123 1 1 1
Light Package Assy, w/ Operator - 120 V 70-2124 1111
Light Package Assy, w/ High Limit - 120 V 70-2125 1 1 1
Light Package Assy, w/ High Limit - 120 V 70-2126 1111
Light Pkg. Assy., w/ OP & H L - 120 V 70-2127 1 1 1
Light Pkg. Assy., w/ OP & H L - 120 V 70-2128 1111

33 Control Panel Cover 03-1543 1 1 1

03-1544 1111
34 40va transformer, J14-03245-011 15-0002 1 1 1 1111
35 Prepurge Relay 15-0108 1 1 1 1111
36 Post Purge Relay 15-0101 1 1 1 1111
37 Flame Failure Relay 15-0106 1 1 1 1111
38 Pilot Relay 15-0109 1 1 1 1111
39 S8610M Ignition Module 16-0054 1 1 1 1111
40 Control Panel 03-1540 1 1 1

03-1541 1111
41 Front Jacket Panel 03-1545 1

03-1546 1

03-1547 1

03-1548 1

03-1549 1

03-1550 1

03-1551 1
42 Combustion Chamber Door Assembly 70-2156 1

70-2157 1

70-2158 1

70-2159 1

70-2160 1

70-2161 1

70-2162 1
43 Heat Exchanger Assy, Bronze Headers 70-2186 1

Standard SB75 Tubes, ASME 70-2187 1

70-2188 1

70-2189 1

70-2190 1

70-2191 1

70-2192 1

28

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

Futera II Model Size with Item Quantities Below

Ref # Name of Part Part # 500 750 1000 1250 1500 1750 1950

43 Heat Exchanger Assy, Bronze Headers 70-2193 1

Optional SB111 Cupro Nickel Tubes, ASME 70-2194 1

70-2195 1
70-2196 1
70-2197 1
70-2198 1
70-2199 1

44 Heat Exchanger “V” Baffle 03-1612 1

03-1613 1
03-1614 1
03-1615 1
03-1616 1
03-1617 1
03-1618 1

45 Heat Exchanger “V” Baffle Strap 03-1619 1 1 1

03-1620 1111
46 Heat Exchanger Flange Bolts 57-0124 8 8 8 8888
47 Aquastat/Limit Well 13-0104 1 1 1 1111
48 Thermometer Well 13-0102 1 1 1 1111
49 Burner Gasket 06-0011 1 1 1

06-0012 1111
50 Burner View Port Assembly 70-2205 1 1 1 1111
51 Burner View Port Glass 20-0006 1 1 1 1111
52 Electrode/Spark Rod 16-0301 1 1 1 1111
53 Ignition Cable 16-0201 1 1 1 1111
54 Pilot Tube 04-0515 1 1 1

04-0516 1111
55 Burner Nut 57-0492 4 4 4 4444
56 Burner Stud 57-0213 4 4 4 4444
57 Main Burner 10-0268 1

10-0269 1

10-0270 1

10-0271 1

10-0272 1

10-0273 1

10-0274 1

Not Conversion Kit Natural to LP Gas 21-0093 1

Shown 21-0094 1

21-0095 1

21-0096 1

21-0097 1

21-0098 1

21-0099 1

Not Conversion Kit LP to Natural 21-0100 1

Shown 21-0101 1

21-0102 1

21-0103 1

21-0104 1

21-0105 1

21-0106 1

29

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

30

FUTERA II INSTALLATION AND OPERATION INSTRUCTIONS

31

260 North Elm Street 1300 Midway Boulevard
Westfield, MA 01085
Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]

www.rbiwaterheaters.com

Mississauga, Ontario L5T 2G8 Canada

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