Burnham BOILERS User manual

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Price - $3.00
INSTALLATION, OPERATING AND
SERVICE INSTRUCTIONS FOR
RSA BOILERS

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The following terms are used throughout this manual to bring attention to the presence of hazards of various risk levels,
or to important information concerning product life.
DANGER
Indicates an imminently hazardous situation
which, if not avoided, will result in death,
serious injury or substantial property
damage.
WARNING
Indicates a potentially hazardous situation
which, if not avoided, could result in death,
serious injury or substantial property
damage.
CAUTION
Indicates a potentially hazardous situation
which, if not avoided, may result in
moderate or minor injury or property
damage.
NOTICE
Indicates special instructions on
installation, operation, or maintenance
which are important but not related to
personal injury hazards.
IMPORTANT INFORMATION - READ CAREFULLY
NOTICE
This boiler has a limited warranty, a copy of which is printed on the back of this manual.
It is the responsibility of the installing contractor to see that all controls are correctly installed
and are operating properly when the installation is complete. The warranty for this boiler is valid
only if the boiler has been installed, maintained and operated in accordance with these
instructions.
All boilers must be installed in accordance with National, State and Local Plumbing,
Heating and Electrical Codes and the regulations of the serving utilities. These Codes and
Regulations may differ from this instruction manual. Authorities having jurisdiction should
be consulted before installations are made.
In all cases, reference should be made to the following Standards:
All wiring on boilers installed in the USA shall be made in accordance with the National
Electrical Code and/or Local Regulations.
All wiring on boilers installed in Canada shall be made in accordance with the Canadian
Electrical Code and/or Local Regulations.
A.
B.
C.
USA BOILERS
Current Edition of American National Standard ANSI/NFPA 31, “Installation of Oil Burning
Equipment”, for recommended installation practices.
Current Edition of American National Standard ANSI/NFPA 211, “Chimneys, Fireplaces,
Vents, and Solid Fuel Burning Appliances”, For Venting requirements.
Current Edition of American Society of Mechanical Engineers ASME CSD-1, "Controls and
Safety Devices for Automatically Fired Boilers", for assembly and operations of controls
and safety devices. CANADIAN BOILERS
A. Current Edition of Canadian Standards Association CSA B139, "Installation Code for Oil
Burning Equipment", for recommended Installation Practices.

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DANGER
DO NOT store or use gasoline or other flammable vapors or liquids in the vicinity of this or any
other appliance.
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property
damage, personal injury or loss of life. Failure to follow all instructions in the proper order
can cause personal injury or death. Read and understand all instructions, including all
those contained in component manufacturers manuals which are provided with the
appliance before installing, starting-up, operating, maintaining or servicing this appliance.
Keep this manual and literature in legible condition and posted near appliance for reference
by owner and service technician.
This boiler requires regular maintenance and service to operate safely. Follow the instructions
contained in this manual. Installation, maintenance, and service must be performed only by an
experienced, skilled and knowledgeable installer or service agency. All heating systems should
be designed by competent contractors and only persons knowledgeable in the layout and
installation of hydronic heating systems should attempt installation of any boiler. It is the
responsibility of the installing contractor to see that all controls are correctly installed and are
operating properly when the installation is completed. Installation is not complete unless a
pressure relief valve is installed into the tapping located on top of appliance - See Section III of
this manual for details.
This boiler is not suitable for installation on combustible flooring, unless installed with a
combustible floor shield (available at extra cost). Do not install boiler on carpeting.
Do not tamper with or alter the boiler or controls. Retain your contractor or a competent
serviceman to assure that the unit is properly adjusted and maintained.
Have Firetubes cleaned at least once a year - preferably at the start of the heating season
to remove soot and scale. The inside of combustion chamber should also be cleaned and
inspected at the same time.
Have Oil Burner and Controls checked at least once a year or as may be necessitated.
Do not operate unit with jumpered or absent controls or safety devices.
Do not operate unit if any control, switch, component, or device has been subject to
water.

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WARNING
Appliance materials of construction, products of combustion and the fuel contain alumina, silica,
heavy metals, carbon monoxide, nitrogen oxides, aldehydes and/or other toxic or harmful
substances which can cause death or serious injury and which are known to the state of California
to cause cancer, birth defects and other reproductive harm. Always use proper safety clothing,
respirators and equipment when servicing or working nearby the appliance.
This boiler contains very hot water under high pressures. Do not unscrew any pipe fittings nor
attempt to disconnect any components of this boiler without positively assuring the water is cool
and has no pressure. Always wear protective clothing and equipment when installing, starting
up or servicing this boiler to prevent scald injuries. Do not rely on the pressure and temperature
gauges to determine the temperature and pressure of the boiler. This boiler contains components
which become very hot when the boiler is operating. Do not touch any components unless they
are cool.
This appliance must be properly vented and connected to an approved vent system in good
condition. Do not operate boiler with the absence of an unapproved vent system.
This boiler needs fresh air for safe operation and must be installed so there are provisions for
adequate combustion and ventilation air.
The interior of the venting and air intake systems must be inspected and cleaned before the start
of the heating season and should be inspected periodically throughout the heating season for
any obstructions. Clean and unobstructed venting and air intake systems are necessary to allow
noxious fumes that could cause injury or loss of life to vent safely and will contribute toward
maintaining the boiler's efficiency.
This boiler is supplied with controls which may cause the boiler to shut down and not re-start
without service. If damage due to frozen pipes is a possibility, the heating system should
not be left unatttended in cold weather; or appropriate safeguards and alarms should be installed
on the heating system to prevent damage if the boiler is inoperative.
This boiler is designed to burn No. 2 fuel oil only. Do not use gasoline, crankcase drainings, or
any oil containing gasoline. Never burn garbage or paper in this boiler. Do not convert to any
solid fuel (i. e. wood, coal) or gaseous fuel (i. e. natural gas, LP/propane). All flammable debris,
rags, paper, wood scraps, etc., should be kept clear of the boiler at all times. Keep the boiler area
clean and free of fire hazards.
Do not operate boiler on combustible floor without a factory supplied floor shield. Concrete over
wood joists is considered combustible flooring. Do not operate on masonry floors, which may
contain moisture.

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Tables of Contents
I. Pre-Installation ..................................... 7
II. Knockdown Boiler Assembly ............... 9
III. Water Piping and Trim ...................... 12
IV. Venting ............................................... 18
V. Electrical and Sequence of Operation 20
Figure 1: RSA Packaged Boiler (RSA85 / RSA135)
VI. Oil Piping ........................................... 28
VII. System Start-Up.................................. 30
VIII. Service and Cleaning.......................... 36
IX. Repair Parts ........................................ 38

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Figure 1A: RSA Packaged Boiler (RSA170 / RSA285)
Boiler
Model
Number
Bare Boiler
Assembly
Minimum Chimney Sizes Water
Capacity
Gallons
Approx.
Shipping
Weight
In. x In. x Ft.
(height) In. (dia.) x Ft.
(height)
RSA170 WV-29-10 8 x 8 x 20 7" x 20' 42.6 600 lb.
RSA195 WV-29-13A 8 x 8 x 20 8" x 20' 39.9 630 lb.
RSA240 WV-29-16A 8 x 12 x 20 8" x 20' 37.3 660 lb.
RSA285 WV-29-19A 8 x 12 x 20 9" x 20' 34.6 690 lb.

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A. INSPECT SHIPMENT carefully for any signs of
damage.
1. ALL EQUIPMENT is carefully manufactured,
inspected and packed. Our responsibility ceases
upon delivery of the crated boiler to the carrier in
good condition.
2. ANY CLAIMS for damage or shortage of shipment
must filed immediately against the carrier by the
consignee. No claims for variances from, or
shortage in orders, will be allowed by the manufac-
turer unless presented within sixty (60) days after
receipt of goods.
B.LOCATE BOILER in front of final position before
removing crate.
1. LOCATE so that smoke pipe connection to chim-
ney will be short and direct. BOILER IS NOT
SUITABLE FOR INSTALLATION ON COMBUS-
TIBLE FLOOR unless combustible floor shield,
I. Pre-Installation
supplied by Burnham, is used. DO NOT install on
carpeting.
2. FOR BASEMENT INSTALLATION, provide a
solid base, such as concrete, if floor is not level, or
if water may be encountered on floor around boiler.
3. PROVIDE SERVICE CLEARANCE of at least 48”
from the front of the jacket for servicing of burner
and removal of tankless heater.
For minimum clearances to combustible materials. See
Figure 2.
Figure 2: Minimum Clearances to Combustible Materials
NOTE:
1. Listed clearances comply with American National Standard ANSI/NFPA 31, Installation of Oil Burning Equipment.
2. RSA boilers can be installed in rooms with clearances from combustible material as listed above. Listed clearances can not
be reduced for alcove or closet installations.
3. For reduced clearances to combustible material, protection must be provided as described in the above ANSI/NFPA 31
standard.

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C.PROVIDE AIR SUPPLY AND VENTILATION to
accommodate proper combustion. If natural ventila-
tion is inadequate, provide a screened opening or duct
from the boiler room to the outside. The opening or
duct must be sized so the boiler input will not exceed
4,000 BTUH/Sq. In. of free area. If other air consum-
ing appliances are near the boiler, the air inlet should
be larger. Consult respective manufacturers.
D. VENTILATION AIR must be provided to maintain
the ambient temperature at safe limits. Local and
national codes may apply and should be referenced.
1. In unconfined spaces (basement) in buildings of
conventional frame, brick, or stone construction,
infiltration normally is adequate to provide air for
ventilation.
2. In confined spaces, two permanent openings, one
near the top of the enclosure and one near the
bottom, shall be provided. Each opening shall have
a free area of not less than 1 sq. inch per 1000
BTUH of the total input of all appliances in the
space.
3. PROVIDE COMBUSTION AND VENTILATION
AIR. Local code provisions may apply and should be
referenced.
A. Determine volume of space (boiler room). Rooms
communicating directly with the space in which the
appliances are installed, through openings not fur-
nished with doors, are considered a part of the space.
Volume(ft3) = Length(ft) x Width(ft) x Height(ft)
B. Determine total input of all appliances in the space.
Add inputs of all appliances in the space and round the
result to the nearest 1000 BTU per hour.
C. Determine type of space. Divide Volume by total input
of all appliances in space. If the result is greater than
or equal to 50 ft3/1000 BTU per hour, then it is
considered an unconfined space. If the result is less
than 50 ft3/1000 BTU per hour then the space is
considered a confined space.
D. For boiler located in an unconfined space of a conven-
tionally constructed building, the fresh air infiltration
through cracks around windows and doors normally
provides adequate air for combustion and ventilation.
E. For boiler located in a confined space or an unconfined
space in a building of unusually tight construction,
provide outdoor air with the use of two permanent
openings which communicate directly or by duct with
the outdoors or spaces (crawl or attic) freely communi-
cating with the outdoors. Locate one opening within 12
inches of top of space. Locate remaining opening
within 12 inches of bottom of space. Minimum
dimension of air opening is 3 inches. Size each
opening per following:
1. Direct communication with outdoors. Minimum
free area of 1 square inch per 4,000 BTU per hour
input of all equipment in space.
2. Vertical ducts. Minimum free area of 1 square
inch per 4,000 BTU per hour input of all equip-
ment in space. Duct cross-sectional area shall be
same as opening free area.
3. Horizontal ducts. Minimum free area of 1 square
inch per 2,000 BTU per hour input of all equip-
ment in space. Duct cross-sectional area shall be
same as opening free area.
Alternate method for boiler located within confined
space. Use indoor air if two permanent openings
communicate directly with additional space(s) of
sufficient volume such that combined volume of all
spaces meet criteria for unconfined space. Size each
opening for minimum free area of 1 square inch per
1,000 BTU per hour input of all equipment in spaces,
but not less than 100 square inches.
F. Louvers and Grilles of Ventilation Ducts
1. All outside openings should be screened and
louvered. Screens used should not be smaller than
1/4 inch mesh. Louvers will prevent the entrance of
rain and snow.
2. Free area requirements need to consider the
blocking effect of louvers, grilles, or screens
protecting the openings. If the free area of the
louver or grille is not known, assume wood louvers
have 20-25 percent free area and metal louvers and
grilles have 60-75 percent free area.
3. Louvers and grilles must be fixed in the open
position, or interlocked with the equipment to open
automatically during equipment operation.

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II. Knock-Down Boiler Assembly
H. INSTALLING THE JACKET
1. Before jacket can be secured to boiler assembly
tankless heater coil or blank plate must be attached.
Using rubber gasket and bolts provided secure
heater coil or blank plate to boiler extension by
inserting the bolts from the backside of the exten-
sion. Refer to Figure 4.
A. REMOVAL OF BOILER.
1. Remove, all boiler to skid, hold down fasteners.
Refer to Figure 3.
2. Carefully walk boiler to the edge of skid. Tilt the
boiler back, allowing an edge to rest on the floor,
and remove the skid.
Figure 3: Base on Skid
B. TEST HEAT EXCHANGER FOR LEAKS before
proceeding with jacket assembly. Heat exchanger,
canopy, and base are preassembled.
1. Install pressure gauge supplied, a hose to the city
water and a valve in the supply tapping. Plug
remainder of tappings.
2. Fill boiler with water and apply a pressure of at
least 10 psig but no more than 30 psig.

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Figure 5: Burner Mounting

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Figure 6: RSA Jacket Assembly

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III. Water Piping and Trim
A. Design a piping system and install boiler which will
prevent oxygen contamination of boiler water and
frequent water additions.
1. There are many possible causes of oxygen contami-
nation such as:
a. Addition of excessive make-up water as a result
of system leaks.
b. Absorption through open tanks and fittings.
c. Oxygen permeable materials in the distribution
system.
2. In order to insure long product life, oxygen sources
should be eliminated. This can be accomplished by
taking the following measures:
a. Repairing system leaks to eliminate the need for
addition of make-up water.
b. Eliminating open tanks from the system.
c. Eliminating and/or repairing fittings which
allow oxygen absorption.
d. Use of non-permeable materials in the distribu-
tion system.
e. Isolating the boiler from the system water by
installing a heat exchanger.
inch clearance from hot water piping to combus-
tible materials.
a. If this boiler is used in connection with refrig-
eration systems, the boiler must be installed so
that the chilled medium is piped in parallel with
the heating boiler using appropriate valves to
prevent the chilled medium from entering the
boiler. See Figure 7. Also, consult I=B=R
Installation and Piping Guides.
b. If this boiler is connected to heating coils
located in air handling units where they may be
exposed to refrigerated air, the boiler piping
must be equipped with flow control valves to
prevent gravity circulation of boiler water
during the operation of the cooling system.
c. If boiler is used with an Alliance™ Indirect-
Fired Domestic Water Heater, install the
Alliance™ as a separate heating zone. Refer to
the Alliance™ Installation, Operating, and
Service Instructions for additional information.
d. Use a system bypass if the boiler is to be
operated in a system which has a large volume
or excessive radiation where low boiler water
temperatures may be encountered (i.e. converted
gravity circulation system, etc.) The bypass
should be the same size as the supply and
return lines with valves located in the bypass
and return line as illustrated in Figure 10 in
order to regulate water flow for maintenance of
higher boiler water temperature. Set the bypass
and return valves to a half throttle position to
start. Operate boiler until the system water
temperature reaches its normal operating range.
Adjust the valves to maintain 180°F to 200°F
boiler water temperature and greater the 120°F
return temperature. Adjust both valves simulta-
neously. Closing the boiler return valve while
opening the bypass valve will raise the boiler
return temperature. Opening the boiler return
valve while closing the by-pass valve will lower
the boiler return temperature.
e. A water boiler installed above radiation level
must be provided with a low water cutoff device
as part of the installation.
WARNING
System supply and return piping must
be connected to correct boiler pipe.
Burnham recommends sizing the
system circulator to supply sufficient
flow (GPM) to allow a 20°F temperature
differential in the system. When sizing
the system circulator, the pressure
drop of all radiators, baseboard and
radiant tubing and all connecting
piping must be considered.
3. Connect System supply and return piping to boiler.
See Figures 8 and 9. Also, consult I=B=R Installa-
tion and Piping Guides. Maintain minimum ½
WARNING
Failure to properly pipe boiler may result in improper operation and damage to boiler or
structure.
Oxygen contamination of boiler water will cause corrosion of iron and steel boiler
components, and can lead to boiler failure. Burnham's Standard Warranty does not cover
problems caused by oxygen contamination of boiler water or scale (lime) build-up caused
by frequent addition of water.

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Figure 7: Recommended Piping for Combination Heating and Cooling (Refrigeration) System
B.Install Pressure Relief Valve. See Figures 8 and 9.
Pressure Relief Valve must be installed with spindle in
the vertical position. Installation of the relief valve
must be consistent with ANSI/ASME Boiler and
Pressure Vessel Code, Section IV.
E. After the boiler and system have been cleaned and
flushed, and before refilling the entire system add
appropriate water treatment chemicals, if necessary, to
bring the pH between 7 and 11.
D. Oil, grease, and other foreign materials which accumu-
late in new hot water and a new or reworked system
should be boiled out, and then thoroughly flushed. A
qualified water treatment chemical specialist should be
consulted for recommendations regarding appropriate
chemical compounds and concentrations which are
compatible with local environmental regulations.
C. Install Drain Valve in return piping. See Figures 8
and 9.

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Figure 8: Recommended Boiler Piping for Circulator Zoned Heating Systems

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Figure 9: Boiler Piping for Zone Valve Zoned Heating Systems

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2. TEMPERING OF HOT WATER — Installation of
an automatic mixing valve will lengthen the
delivery of the available hot water by mixing some
cold water with the hot. This prevents the possibil-
ity of scalding hot water at the fixtures. In addition,
savings of hot water will be achieved since the user
will not waste as much hot water while seeking a
water temperature. Higher temperature hot water
required by dishwashers and automatic washers is
possible by piping the hot water from the heater
prior to entering the mixing valve. The mixing
valve should be “trapped” by installing it below the
cold water inlet to heater to prevent lime formation
in the valve. Refer to Figure 11.
3. FLUSHING OF HEATER — All water contains
some sediment which settles on the inside of the
coil. Consequently, the heater should be periodi-
cally backwashed. This is accomplished by install-
ing hose bibs as illustrated and allowing water at
city pressure to run into hose bib A, through the
heater, and out hose bib B until the discharge is
clear. The tees in which the hose bibs are located
should be the same size as heater connections to
minimize pressure drop.
4. HARD WATER — A water analysis is necessary
to determine the hardness of your potable water.
This is applicable to some city water and particu-
larly to well water. An appropriate water softener
should be installed based on the analysis and
dealer’s recommendation. This is not only benefi-
cial to the tankless heater but to piping and fixtures
plus the many other benefits derived from soft
water.
THE FOLLOWING GUIDELINES SHOULD BE
FOLLOWED WHEN PIPING THE TANKLESS HEATER:
1. FLOW REGULATION — If flow through the
heater is greater than its rating, the supply of
adequate hot water may not be able to keep up with
the demand. For this reason a flow regulator
matching the heater rating should be installed in
the cold water line to the heater. The flow regulator
should preferably be located below the inlet to the
heater and a minimum of 3’ away from the inlet so
that the regulator is not subjected to excess tem-
peratures that may occur during “off” periods when
it is possible for heat to be conducted back through
the supply line. The flow regulator also limits the
flow of supply water regardless of inlet pressure
variations in the range of 20 to 125 psi.
Figure 10: Recommended System Bypass Piping
F. CONNECT TANKLESS HEATER PIPING AS
SHOWN IN FIGURE 11. See Table 1 for Tankless
Heater Rating.
WARNING
Install automatic mixing valve at tankless
heater outlet to avoid risk of burns or
scalding due to excessively hot water at
fixtures. Adjust and maintain the mixing
valve in accordance with the manufacturer's
instructions. Do not operate tankless
heater without mixing valve.

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Figure 11: Schematic Tankless Heater Piping
Table 1: Tankless Heater Ratings
Boiler Model STD. #7524 OPT. #7530
GPM PSID GPM PSID
RSA170 3¾ 25½ 4 26½
RSA195, 240, & 285 4 29 4¼ 31
Boiler Model S350 S375
GPM PSID GPM PSID
RSA(H)85 & 110 3 12 3½ 15
RSA110(H)125 & 135 3¼ 16 3¾ 25
RSA125 & 135 3½ 19

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IV. Venting
A. General Guidelines.
1. Vent system installation must be in accordance with
these instructions and applicable provisions of local
building codes. Contact local building or fire
officials about restrictions and installation inspec-
tion in your area.
2. The RSA Series is designed to be vented into a
fireclay tile-lined masonry chimney or chimney
constructed from type-L vent or a factory built
chimney that complies with the type HT require-
ments of UL103. The chimney or vent pipe shall
have a sufficient draft at all times, to assure safe
proper operation of the boiler. See Figure 12 for
recommended installation.
a. Install a draft regulator (supplied by installer)
following the instructions furnished with the
regulator. See Figure 13 for alternate regulator
locations.
b. With any new or replacement installation the
chimney has to be considered. Chimneys that
have a high heat loss become less suitable as the
heat loss of the home goes down and the
efficiency of the boiler goes up. Most homes
have a chimney appropriate for the fuel and the
era in which the home was built. That may
have been a coal fired or an inefficient oil fired
boiler built into a home without insulation or
storm windows. With increasing fuel prices that
home probably has been insulated and fitted
with storm windows so that the heat loss of the
home has been reduced. This requires less fuel
to be burned and sends less heat up the chimney.
A new boiler probably has a higher efficiency
than the boiler being replaced. That probably
means that the stack temperature from the new
boiler will be lower than that from the old boiler
and with less room air being drawn up the
chimney to dilute the stack gases. The combina-
tion of a large uninsulated chimney, reduced
firing rate, reduced firing time, lower stack
temperature and less dilution air can, in some
cases, contribute to the condensing of small
amounts of water vapor in the chimney. Such
condensation, when it occurs, can cause chim-
ney deterioration. In extreme cases, the chim-
ney may have to be lined to insulate the chimney
and thus prevent the condensation. The
addition of dilution air into the chimney may
assist in drying the chimney interior surfaces.
A massive chimney on a cold, or exposed
outside wall may have produced adequate draft
when it was fired with a higher input and
greater volumes of heated gases. With reduced
input and volume, the draft may be severely
affected. In one instance our research showed a
new chimney of adequate sizing produced only -
.035” W.C. after 30 minutes of continuous firing
at 13.0% CO2. Outside wall chimneys take
longer to heat up and can have .00” W.C. draft
at burner start-up. You may have to consider a
special alloy chimney flue liner with insulation
around it and stabilizing draft cap or even a
draft inducing fan in severe cases.
c. For the same reasons as in (2.) above, heat
extractors mounted into the breeching are not
recommended.
3. For minimum clearances to combustible materials
refer to Figure 2.

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Figure 12: Recommended Smokepipe Arrangement and Chimney Requirements
Figure 13: Draft Regulator Locations

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A.General
1. Install wiring and electrically ground boiler in
accordance with requirements of the authority
having jurisdiction, or in absence of such require-
ments the National Electrical Code, ANSI/NFPA
70, and/or the CSA C22.1 Electric Code.
2. A separate electrical circuit should be run from the
main electrical service with a fused disconnect
switch in the circuit.
3. Wiring should conform to Figure 14 and/or 15.
B. System Controls and Wiring
1. Refer to National Electric Code or Local Electric
Codes for proper size and type of wire required.
Follow Code.
2. Use anti-short bushings on all wiring passing
through boiler jacket, junction boxes and/or control
boxes.
3. Use armored cable (BX) over all exposed line
voltage wiring.
4. If an Alliance indirect water heater is used, use
priority zoning. Do not use priority zoning for
Hydro-Air Systems.
5. Single Zone System – Refer to Figure 14 or 15 of
this manual for the electrical diagram for this type
of system. Connect the system circulator wire leads
to the proper locations on the Aquastat control,
L8124C/L8148A. See Figure 14 or 15. Connect
the thermostat to the ‘T-T’ terminals on the
L8124C/L8148A control. Set thermostat heat
anticipator settings to 0.60 amps.
6. Conventional Circulator Zoned System – Refer to
Figure 16 of this manual for the electrical diagram
for this type of system.
Read, understand and follow all of the instructions
provided with the Honeywell R8888 control.
7. Conventional Zone Valve Zoned System – Refer to
Figure 17. Wiring to the most popular models of
zone valves are given in Figure 18.
Locate C1 and C2 inside the L8124C Honeywell
control. Connect the two (2) terminals to the
system circulator wire leads, supplied with boiler.
Connect the H1 and H2 terminals inside the R8889
to the ‘T-T’ terminals in the L8124C Honeywell
Control. Refer to Figure 17.
Connect the thermostat of each zone and the
circulator for that zone to R8889 panel. If an
Alliance indirect water heater is used, connect the
Alliance thermostat and circulator to the Zone 1
terminals of the R8889. Set thermostat anticipator
settings to 0.12 amps.
V. Electrical
DANGER
Positively assure all electrical connections are unpowered before attempting installation or
service of electrical components or connections of the boiler or building. Lock out all electrical
boxes with padlock once power is turned off.
WARNING
Failure to properly wire electrical connections to the boiler may result in serious physical
harm.
Electrical power may be from more than one source. Make sure all power is off before
attempting any electrical work.
Each boiler must be protected with a properly sized fused disconnect.
Never jump out or make inoperative any safety or operating controls.
The wiring diagrams contained in this manual are for reference purposes only. Refer to the
wiring diagram of any controls used with the boiler. Read, understand and follow all wiring
instructions supplied with the controls.