RBI SPECTRUM Installation and Operation Instruction

SPMIOM-5

82-0255

SPECTRUM FINNED COPPER
GAS BOILERS (MODEL SB) &

WATER HEATERS (MODEL SW)

INSTALLATION & OPERATION MANUAL

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, 1103 kPa 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 fl ammable 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 fi re department.

Installation and service must be performed by a qualifi ed installer, service agency or
the gas supplier.

WARNING: Failure to properly vent this unit can cause excessive amounts of carbon
monoxide resulting in severe personal injury or death!

INSTALLER, THESE INSTRUCTIONS TO BE AFFIXED ADJACENT TO THE HEATER.

CONSUMER, RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE PURPOSES.

260 North Elm Street 7555 Tranmere Drive
Westfi eld, MA 01085  Mississauga, Ontario L5S 1L4
Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]

SPECTRUM INSTALLATION AND OPERATING INSTRUCTIONSPage 2

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 infl ammables
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 qualifi é ou par le fournisseur de gaz.

CONTENTS

Before Your Start ................................................ page 2

Ratings & Capacities .......................................... page 3

Boiler/Water Heater Location .............................page 3

Combustion Air & Ventilation ............................. page 3

Chimney & Vent Pipe Connections ....................page 4

Common Vent Systems ......................................page 5

Outdoor Venting .................................................page 8

General Piping Requirements ............................page 8

Heating System Piping ....................................... page 9

Domestic Water Supply Piping ......................... page 13

Gas Supply Piping ............................................page 17

Electrical Wiring ................................................ page 18

General Operation ............................................page 19

Lighting Instructions .........................................page 20

Operating Instructions ......................................page 21

Checking & Adjustments ..................................page 22

Control Description ...........................................page 22

Maintenance ..................................................... page 23

Repair Parts ......................................................page 25

BEFORE YOU START

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

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

The Spectrum fi nned copper heating boiler/water heaters
have been design certifi ed 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 CAN-1-3.1, Industrial and Commercial Gas
Fired Boilers. Each unit has been constructed and
hydrostatically tested for a maximum working pressure of
160 psi, 1103 KPa 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/NFPA54-latest
revision.

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

If installed in the Commonwealth of Massachusetts, you
MUST FOLLOW the additional instructions contained in
RBI's instruction sheet MACODE-3. If you do not have a
copy, call your RBI distributor or contact the RBI Customer
Service Department.

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 distributor or contact the
RBI Customer Service Department, 260 North Elm Street,
Westfi eld, MA 01085 for U.S. or 7555 Tranmere Drive,
Mississauga ONT L5S 1L4 for Canada. Always include
the model and serial numbers from the rating plate of the
boiler/water heater in question.

SPECTRUM INSTALLATION AND OPERATING INSTRUCTIONS Page 3

RATINGS & CAPACITIES

Before undertaking the installation of the Spectrum
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.

NOTE: Service clearances are not mandatory, but are
recommended to ensure ease of service should it
be required.

Table 1
Clearance Service
to Combustibles Clearance

in mm in mm
Top 14 356 18 457
Back 6 152 18 457
Left Side 6 152 24 609
Right Side 6 152 24 609
Front 6 152 24 609
Flue 6 152 6 152

Table 2 - Special Base for Combustible Floors

Model Number Part Number
100 70-1248
150 70-1249
200 70-1250
250 70-1251
300 70-1252
350 70-1253
400 70-1254

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. The pan must not restrict the flow of
combustion air to the unit.

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
“GENERAL 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

8.

WARNING: Never store combustible materials,
gasoline or any product containing fl ammable
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!

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

2. An optimum site will be level, central to the piping
system, close to a chimney 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 fl oor is structurally sound and will
support the weight of the boiler/water heater.

NOTE: The Spectrum may be installed directly on
combustible fl ooring, only if RBI supplied special
fl oor pan is used but never on carpeting, see Table

2.

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/NFPA 54 and all applicable local
building codes. Canadian installations must
comply with CSA B149.1 or .2 Installation Code
for Gas Burning Appliances and Equipment, 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 that can result in
severe personal injury or death!

SPECTRUM INSTALLATION AND OPERATING INSTRUCTIONSPage 4

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
fl uorocarbons 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. Failure to properly protect the unit
from construction dust will damage the unit voiding
the warranty!

All Air From Inside The Building

If the boiler/water heater is to be located in a confi ned
space, minimum clearances listed in Table 1 must be
maintained between the boiler/water heater and any
combustible construction. When installed in a confi ned
space, Figures 1 and 2, two permanent openings
communicating with an additional room(s) are required.
The combined volume of these spaces must have
suffi cient volume to meet the criteria for an unconfi ned
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 confi ned area. Each opening must be no less than

100 in2, 64,516 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.

All Air From Outside The Building

When installed in a confi ned space 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 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.

Where directly communicating with the outdoors
or communicating with the outdoors through vertical
ducts, each opening shall have a minimum free area
of 1 in2/4000 Btu/hr, 550 mm2/kW of the total input
rating of all of the equipment in the enclosure.

Where communicating with the outdoors through
horizontal ducts, each opening shall have a minimum
free area of 1 in2/2000 Btu/hr, 1100 mm2/kW of the total
input rating of all of the equipment in the enclosure.

When louvers and screens are used, they must have
the same cross-sectional area as the free area of the
opening to which they connect.

When calculating the free area necessary to meet
the make-up air requirements of the enclosure,
consideration must be given to the blockage effects of
louvers, grills and screens. Screens must have a
minimum mesh size of 1/4 in, 6.4mm. If the free area
through a louver or grill is not known, ducts should be
sized per Table 3.

Canadian installations must comply with CSA B149.1
when air supply is provided by natural air fl ow from the
outdoors for natural draft, partial fan-assisted, fan­assisted, or power draft-assisted burners, there shall
be a permanent air supply opening(s) having a cross­sectional area of not less than 1 in2 per 7,000 Btuh
(310 mm2 per kW) up to and including 1 million Btuh,
plus 1 in2 per 14,000 Btuh (155 mm2 per kW) in excess

of 1 million Btuh.

Table 3 - Make-up Air Louver Sizing

Required Cross Sectional Area

Input 1/4 in 6.4 mm
(MBH) Wire Screen Metal Louvers Wooden Louvers
in
100 25 161 33 213 100 645
150 37 858 50 322 150 967
200 50 322 67 432 200 1290
250 62 400 83 535 250 1612
300 75 484 100 645 300 1934
350 87 561 117 754 350 2257
400 100 645 133 858 400 2579

2

cm

75% Free Area 25% Free Area

2

in

2

cm

2

in

2

cm

2

CHIMNEY & VENT PIPE
CONNECTIONS

WARNING: The vent installation must be in
accordance with Part 7, Venting of Equipment,
of the latest revision of the National Fuel Gas
Code, ANSI Z223.1/NFPA 54 or applicable
provisions of the local building codes. Canadian
installations must comply with CSA 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!

SPECTRUM INSTALLATION AND OPERATING INSTRUCTIONS Page 5

Chimney Inspection & Sizing

A thorough inspection of the masonry chimney must be
performed to ensure that the chimney is clean, properly
constructed, lined and sized. Exterior masonry chimneys
should not be used unless properly lined to prevent
condensation and draft problems. Table 4 lists the
equivalent breeching and fl ue sizes required for the
boiler/water heater.

Table 4 - Equivalent Breeching & Chimney Size

Model Size Size

Size in mm
100 5 127
150 6 152
200 7 178
250 8 203
300 8 203
350 9 229
400 10 254

Note: These sizes are based on a 20 ft, 6.1 m chimney height.

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

WARNING: If an appliance using any type of a
mechanical draft system operating under
positive pressure is connected to a chimney fl ue,
never connect any other appliances to this fl ue.
Doing so can result in the accumulation of
carbon monoxide which can cause severe
personal injury or death!

Vent Connections

Always use a type B or single wall galvanized metal vent
pipe the same diameter as the draft hood fl ue collar,
Table 4. Use the shortest, straightest vent system
possible for the installation. If horizontal runs exceed
6 ft, 1.8 m they must be supported at 6 ft, 1.8 m
intervals with overhead hangers. The vent system should
be sloped up toward the chimney at a minimum rate of
1/4 in/ft, 20 mm/m and terminate fl ush with the inside
of the chimney fl ue. Fasten each connection with at least
3 corrosion resistant sheet metal screws.

WARNING: Never modify or alter any part of the
boiler’s draft hood. This includes the removal or
alteration of any baffl es. Never install a vent pipe
of a diameter different than that of the boiler
draft hood fl ue collar. Failure to comply with this
warning can result in severe personal injury or
death!

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

To determine the appropriate power venter for the boiler/
water heater, see Table 5, Power Venter Sizes. Follow
the power venter manufacturer’s installation instructions.

Table 5 - Power Venter Sizes

Spectrum Power Venter Max. Pipe Length
Model Size FT m

100-250 HS-1 100 31
300-400 HS-2 100 31

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 fonction­nent pas: système d’évacuation.

a) Seal any unused openings in the common venting

system.

Sceller toutes les ouvertures non utilisées du sys-tème
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 defi ­ciencies which could cause an unsafe condition.

Inspecter de façon visuelle le système d’évacuation

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.

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.

SPECTRUM INSTALLATION AND OPERATING INSTRUCTIONSPage 6

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 fi replace 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 in-

structions d’allumage. Régler le thermostat de façon
que l’appareil fonctionne de façon continue.

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, fi replace
dampers and any other gas-burning appliance to
their previous condition of use.

Une fois qu’il a été déterminé, 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
Part 11 in the National Fuel Gas Code, ANSI Z223.1/
NFPA 54 and or CAN/CGA B149 Installation Codes.

Tout mauvais fonctionnement du systéme

d’évacuation 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 modifi ée,
le système devrait étré modifi é pour.

e) Test for spillage at the draft hood relief opening after

5 minutes of main burner operation. Use the fl ame
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 fl amme d'une
allunette ou d'une chandelle ou la fumée d'une ciga­rette, d'un cigare ou d'une pipe.

SPECTRUM INSTALLATION AND OPERATING INSTRUCTIONS Page 7

Figure 1 - Vertical Venting with a Metal Chimney System and Inside Air

10 FT 3.1m

Figure 2 - Vertical Venting using a Masonry Chimney and Inside Air

RIOM-51

RIOM-52

SPECTRUM INSTALLATION AND OPERATING INSTRUCTIONSPage 8

OUTDOOR VENTING

When installed outdoors the Spectrum must be fi tted
with the factory supplied outdoor hood assembly, see
Figure 3. Multiple units must be spaced per Figure 3A.

The boiler/water heater must be at least 10 ft, 3.1 m
from any door, window or gravity air inlet into any
building and at least 3 ft, 0.9 m from any overhang
unless local codes dictate differently.

Avoid locations where wind deflection off of adjacent
walls, buildings or shrubbery might cause a down draft.
The unit(s) should be located at least 3 ft, 0.9 m from
structures. Outdoor installations are not recommended
in areas where the danger of snow blockage exists.

CAUTION: Do not place the boiler/water heater in a
location that would subject it to runoff from adjacent
buildings or damage may occur voiding the
warranty!

Figure 3 - Outdoor Venting

EXHAUST
HOOD

SUPPLY/RETURN

HEADER HOOD

SPECTRUM

COMBUSTION
AIR HOOD

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 lime build-up in the copper heat
exchanger tubes is NOT covered under the
manufacturer’s warranty. 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
fl ow rates, see Table 7 or 8. Return water temperatures
below 110°F, 43°C will result in heat exchanger
damage from excessive condensation voiding the
manufacturer’s warranty, see Primary/Secondary
Piping Figure 5.

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

Freeze Protection

This boiler/water heater is CSA designed certifi ed for
outdoor installation. Outdoor installations in areas where
the danger of freezing exists are not recommended
unless proper freeze protection is provided. If the unit
is to be installed in such an area the following
precautions MUST be observed:

Figure 3A -Multiple Outdoor Units

3'

0.9 m

4'

1.2 m

HEADER
HOOD

RIOM-53

1. A continuous fl ow of water through the boiler/water
heater MUST be maintained! The pump responsible
for fl ow 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 fl ow 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 boiler/water heater 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.

CAUTION: Improper outdoor installation of this
boiler/water heater can cause boiler failure voiding
the manufacturer's warranty!

RIOM-54

SPECTRUM INSTALLATION AND OPERATING INSTRUCTIONS Page 9

Relief Valve

Pipe the discharge of the pressure relief valve to prevent
scalding in the event of a discharge, see Figure 4. The
discharge piping must be sized the same as the
pressure relief valve outlet and installed to allow
complete drainage of both the relief valve and the
discharge piping.

Figure 4

1",

25 mm

RIOM-57

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!

Flow Switch

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

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

HEATING SYSTEM PIPING

The thermal expansion of the system must be
considered when supporting the system. A minimum
system pressure of 12 psig, 82.7 kPa must be
maintained.

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 Return
100 thru 400 1

1

/2" NPT 11/2" NPT

Pump Requirements

This low mass boiler requires a continuous minimum
water fl ow for proper operation. The boiler pump must
be sized to overcome the head loss of the boiler and the
near piping in order to achieve the required temperature
rise. Table 7 and 8 provides the heat exchanger pressure
drop and temperature rise fi gures.

The temperature rise across the boiler must never
exceed 30°F, 16.7 °C. A pump delay is installed, the
pump delay turns the pump on each time the burners
fi re and runs the pump up to 10 minutes after the call
for heat is satisfi ed.

CAUTION: A temperature rise outside of the range
listed in Tables 7 or 8 indicates that the fl ow rate
through the heat exchanger is incorrect which will
damage the heat exchanger voiding the warranty!

The maximum allowable flow rate through a
Spectrum boiler with copper heat exchanger is 92
GPM, 5.8 L/s (2-pass heat exchanger) and 46 GPM,

2.9 L/s (4-pass heat exchanger).

Low Water Cutoff

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

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

General Piping Requirements

All heating system piping must be installed by a qualifi ed
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 in, 25 mm must be
maintained between heating system pipes and all
combustible construction. All heating system piping must
be supported by suitable hangers not the boiler.

Expansion Tank

An expansion tank or other means to control thermal
expansion must be installed in the heating system. An
expansion tank must be installed close to the boiler on
the suction side of the system pump.

Primary/Secondary Piping

Boilers connected to heating systems using zone valves,
zone pumps, or systems that have excessive fl ow rates
or return water temperatures less than 110°F, 43 °C
must be isolated from these systems to protect the
boiler.

SPECTRUM INSTALLATION AND OPERATING INSTRUCTIONSPage 10

Table 7 - Temperature Rise Table – 2 Pass Headers

ΔT = 10°F

Flow

Model

Number

100

150

200

250

300

350

400

Note: Unit equipped with 4 pass headers, see Table 8.

Table 8 - Temperature Rise Table – 4 Pass Headers

Rate

GPM

16.4

24.6

32.4

40.5

49.8

58.1

66.4

ΔT = 10°F

Pres.
Drop

Ft

0.05

0.13

0.27

0.48

0.82

1.23

1.77

ΔT = 5.5°C

Flow
Rate

L/s kPa

1.0

1.6

2.0

2.6

3.1

3.7

4.2

ΔT = 5.5°C

Pres.
Drop

0.1

0.4

0.8

1.4

2.4

3.6

5.2

ΔT = 20°F

Flow
Rate

GPM

—

—

16.2

20.3

24.9

29.1

33.2

ΔT = 20°F

Pres.
Drop

Ft

—

—

0.07

0.13

0.23

0.34

0.49

ΔT = 11.1°C

Flow
Rate

L/s kPa

—

—

1.0

1.3

1.6

1.8

2.1

ΔT = 11.1°C

Pres.
Drop

0.2

0.4

0.7

1.0

1.4

—

—

ΔT = 30°F

Flow
Rate

GPM

—

—

—

—

16.6

19.4

22.1

ΔT = 30°F

Pres.
Drop

Ft

—

—

—

—

0.10

0.20

0.20

ΔT = 16.7°C

Flow
Rate

L/s

—

—

—

—

1.0

1.2

1.4

ΔT = 16.7°C

Pres.
Drop

kPa

—

—

—

—

0.3

0.5

0.7

Flow

Model

Number

100

150

200

250

300

350

400

Note: Unit equipped with 2 pass headers, see Table 7.
*Flow exceeds recommended maximum use a greater temperature rise or consult manufacturer. Cupro-nickel heat
exchanger should be considered.

Rate

GPM

16.4

24.6

32.4

40.5

49.8*

Pres.
Drop

Ft

0.34

0.94

1.92

3.46

5.89

Flow
Rate

L/s kPa

1.0

1.6

2.0

2.6

3.1

See Note

Pres.
Drop

1.0

2.8

5.7

10.2

17.3

Flow
Rate

GPM

—

—

16.2

20.3

24.9

29.1

33.2

Pres.
Drop

Ft

—

—

0.53

0.96

1.63

2.47

3.54

Flow
Rate

L/s

—

—

1.0

1.3

1.6

1.8

2.1

Pres.
Drop

kPa

—

—

1.6

2.8

4.8

7.3

10.4

Flow
Rate

GPM

—

—

—

—

16.6

19.4

22.1

Pres.
Drop

Ft

—

—

—

—

0.80

1.20

1.70

Flow
Rate

L/s

—

—

—

—

1.0

1.2

1.4

Pres.
Drop

kPa

—

—

—

—

2.3

3.4

4.9

SPECTRUM INSTALLATION AND OPERATING INSTRUCTIONS Page 11

Figure 5 - Typical Primary/Secondary Piping System

(See Notes)

Pump

Gate Valve

Globe Valve

NOTES:

1

1. Boiler circuit piping must be sized
large enough to handle maximum fl ow
through unit.

2. Boiler pump sized to boiler design fl ow
requirements.

3. All boilers furnished with factory
mounted outlet water temperature
gauge.

4. Boiler pump purging required. Use
terminals supplied.

Notice: These drawings show suggested
piping confi guration and valving.
Check with local codes and ordinances
for specifi c requirements.

Figure 6 - Low Temperature Piping with Thermostatic Valve

(See Notes and Adjustment Procedures)

3

H-1 Rev 2

Angle Valve

Bufferfly Valve

Balance Valve

Ball Valve

Motorized Valve

Solenoid

Operated Valve

Self-Operated

Val ve

Pressure

Reducing Valve

Check Valve

Pressure

Relief Valve

Flow Switch

NOTES:

1. For pump selection consult factory.

2. Boiler pump sized to boiler and thermostatic 3-way valve design fl ow requirements.

3. Boiler circuit piping must be sized large enough to handle maximum fl ow through unit.

4. All boilers furnished with factory mounted outlet water temperature gauge.

5. Boiler pump purging required. Use terminals supplied.

6. Valve is precalibrated for 140°F return temperature.

Notice: These drawings show suggested piping confi guration and valving.
Check with local codes and ordinances for specifi c requirements.

H-18

Thermometer

Aquastat Union

Pressure Switch

Gas Pressure

Regulator

Automatic

Air Vent

Backflow­Prevention

Device

3-Way Valve

Expansion

Tan k