Burnham Hydronics MMII User Manual

DNAGNITAREPO,NOITALLATSNI

ROFSNOITCURTSNIECIVRES

®

NAMETUNIM

II

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81404025R13-1/07 Price - $3.00

The New York City Department of Buildings has approved the Minuteman® II boiler: Approval No. MEA 332-93-E.
The City of New York requires either a Licensed Master Plumber or a Fire Suppression Piping Contractor supervise the

installation of this product.
The Massachusetts Board of Plumbers and Gas Fitters has approved the Minuteman® II boiler. See the Massachusetts Board of

Plumbers and Gas Fitters website, http://license.reg.state.ma.us/pubLic/pb_pre_form.asp for the latest Approval Code or ask
your local Sales Representative.

The Commonwealth of Massachusetts requires this product to be installed by a Licensed Plumber or Gas Fitter.

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.

REGNAD

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GNINRAW

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Table of Contents

I. Pre-Installation ...............................4

II. Unpack Boiler ................................ 5

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ECITON

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,htaednitluserdluoc,dediovatonfi,hcihw

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razahyrujnilanosrep

VI. Venting/Air Intake Piping ............. 11

VII. Electrical ....................................... 17

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ecnanetniamro,noitarepo,noitallatsni

otdetalertontubtnatropmierahcihw

III. Boiler Water Piping .........................5

IV. Domestic Hot Water Piping ............ 8

V. Gas Piping ......................................9

2

VIII. System Start-up ............................. 18

IX. Service Instructions ....................... 22

X. Repair Parts ..................................29

NOITUAC

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Figure 1: Dimensional Drawing

3

I. Pre-Installation

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A. Installation must conform to the requirements of the

authority having jurisdiction. In the absence of such
requirements, installation must conform to:

USA ANSI Z223.1, National Fuel Gas Code.
Where required by the authority having

jurisdiction, the installation must also conform to
ANSI/ASME CSD-1 Standard for Controls and

Safety Devices for Automatically Fired Boilers.

CANADA CAN/CGA B149.1 or .2 Installation Codes

for Gas Burning Appliances and Equipment,
and CSA C22.1 Canadian Electrical Code,
Part I.

B. Appliance is design certifi ed for installation on

combustible fl ooring. The boiler must not be installed
on carpeting.

C. Provide clearance between boiler jacket and

combustible material in accordance with local fi re
ordinance. Refer to Figure 2 for minimum listed
clearance from combustible material. Recommended
service clearance is 24 inches from left side, right side,
front and rear. Service clearances may be reduced to
minimum clearances to combustible materials.

D. Install on level fl oor. For basement installation provide

concrete base if fl oor is not perfectly level or if water
may be encountered on fl oor around boiler.

E. Protect gas ignition system components from water

(dripping, spraying, rain, etc.) during boiler operation
and service (circulator replacement, condensate trap,
control replacement, etc.).

Figure 2: Minimum Clearances to Combustible Surfaces

4

F. Provide combustion and ventilation air in accordance

with applicable provisions of local building codes, or
National Fuel Gas Code, ANSI Z223.1, Section 5.3, Air
for Combustion and Ventilation.

GNINRAW

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II. Unpack Boiler

This boiler is equipped with a fan which produces an

induced draft through the unit. 100% of combustion air
is pulled in from outdoors and the fl ue gases are
exhausted to the outdoors through the intake air/vent
system. Refer to Section VI.

G. Do not install boiler where gasoline or other fl ammable

vapors or liquids, or sources of hydrocarbons (i.e.
bleaches, cleaners, chemicals, sprays, paint removers,
fabric softeners, etc.) are used or stored.

NOITUAC

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A. Move boiler to approximate installed position.
B. Remove all crate fasteners.

Figure 3: Removal From Skid

III. Water Piping and Trim

C. Remove outside container with all other inside

protective spacers and bracing. Save two of the

reliobpmubtonoD.reliobpordtonoD

wooden slats from the container sleeve for use in Steps
E and F.

D. Remove four (4) boiler hold-down fasteners. See

Figure 3.

E. Tilt the boiler to one side and slide a wooden slat under

the two nylon glides.

F. Tilt the boiler to the other side and slide another

wooden slat under the two nylon glides.

G. Slide the boiler forward or backward off the skid using

the two wooden slats as runners.

H. Move boiler to its permanent location.

NOITUAC

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A. Design and install boiler and system piping to

prevent oxygen contamination of boiler water.

Oxygen contamination sources are system leaks

requiring addition of makeup water, fi ttings, and
oxygen permeable materials in distribution system.
Eliminate oxygen contamination by repairing system
leaks, repairing fi ttings, and using nonpermeable
materials in distribution system.

B. Connect system supply and return piping to boiler.

See Figure 4. Also consult I=B=R Installation and
Piping Guides. Maintain a clearance between hot water
piping and combustible construction as required by
local codes. In the absence of local codes, ½" clearance
should be used. Note that a system circulator is
required and is not supplied with the Minuteman II.

5

C. Install Safety Relief Valve. See Figure 4. Safety Relief

Valve must be installed with spindle in vertical position.

Installation of the relief valve must be consistent with
the ASME Boiler and Pressure Vessel Code, Section IV.

Figure 4: Recommended Water Piping for Zone Valve Zoned Heating Systems

GNINRAW

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D. If boiler is used in connection with refrigeration

systems, boiler must be installed with chilled medium

piped in parallel with the heating boiler using
appropriate valves to prevent chilled medium from
entering boiler, see Figure 5. Also consult I=B=R
Installation and Piping Guides.

aeraynaniepiptonoD.snrubere

Refer to Figure 5a for a diagram of the water piping

system inside the Minuteman

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llatsnitonoD.ruccodluocgnizeerferehw

E. If boiler is connected to heating coils located in air

handling units where they may be exposed to
refrigerated air, boiler piping must be equipped with
fl ow control valves to prevent gravity circulation of
boiler water during operation of cooling system.

®

II's jacket.

F. Use a boiler 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.).

6

Install pipe tee between circulator and boiler return

along with second tee in supply piping as shown in
Figure 4. Bypass should be same size as the supply and
return lines with valves located in bypass and supply
outlet as illustrated in Figure 4 in order to regulate
water fl ow to maintain higher boiler water temperatures.

After the boiler is operational (reference Section VII.

System Start-Up) set by-pass and boiler supply valves
to half throttle position to start. Operate boiler until
system water temperature reaches normal operating
range.

Adjust valves to provide 180° to 200°F supply water

temperature. Opening the boiler supply valve will raise
system temperature, while opening the by-pass valve
will lower system supply temperature.

G. A hot water boiler installed above radiation level

must be provided with a low water cut-off device as
part of installation.

If a low water cut-off is required, it must be mounted in

the system piping above the boiler.

The minimum safe water level of a hot water boiler is

just above the highest water containing cavity of the
boiler; that is, a hot water boiler must be full of water to
operate safely.

It is required to perform a long term pressure test of the

hydronic system, the boiler should fi rst be isolated to
avoid a pressure loss due to the escape of air trapped in
the boiler.

To perform a long term pressure test including the

boiler, ALL trapped air must fi rst be removed from the
boiler.

A loss of pressure during such a test, with no visible

water leakage, is an indication that the boiler contained
trapped air.

H. Oil, grease, and other foreign materials which

accumulate in new hot water boilers and a new or
reworked system should be boiled out, and then
thoroughly fl ushed. A qualifi ed water treatment
chemical specialist should be consulted for
recommendations regarding appropriate chemical
compounds and concentrations which are compatible
with local environmental regulations.

Figure 5: Recommended Piping for Combination

Heating & Cooling (Refrigeration)

Systems

Figure 5a: Internal Water Piping System Diagram

I. After the boiler and system have been cleaned and

fl ushed, and before refi lling the entire system add
appropriate water treatment chemicals, if necessary, to
bring the pH between 7 and 11.

Figure 6: Recommended Bypass Piping

7

IV. Domestic Hot Water Performance and Piping

A. Domestic hot water ratings for the Minuteman

based two 5 minute draws with 10 minute recovery
period at 100°F average temperature rise. Refer to
Table 1 for ratings.

Table 1: Domestic Hot Water Ratings

RELIOB

LEDOM

07-4IIMM9.241

501-4IIMM1.361

501-5IIMM1.361

041-5IIMM3.381

WARDRETAW

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B. Drain domestic water system.

1. Shut off cold water supply at main shutoff valve.

2. Open 1 or more system faucets to relieve pressure.
Open system drain valve, leaving faucets open to
relieve vacuum.

3. Disconnect exiting domestic hot water heating
system ( if applicable).

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II are

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Figure 7: Domestic Hot Water Piping

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C. Connect hot water piping to ½" NPT outlet of heater.

See Figure 7.

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D. Connect cold water piping to ½" NPT inlet of heater.

See Figure 7.

E. Fill domestic hot water system.

1. Open all faucets to allow air to purge from heater
and piping.

2. Open domestic hot water shutoff valve (if used).

3. Open cold water inlet shutoff valve.

4. Purge air from domestic water system. Close
faucets.

5. Check system for leaks. Repair as necessary.

8

V. Gas Piping

A. Size gas piping. Design system to provide adequate gas

supply to boiler. Consider these factors:

1. Allowable pressure drop from point of delivery to
boiler. Maximum allowable system pressure is ½
psig. Actual point of delivery pressure may be less;
contact gas supplier for additional information.
Minimum gas valve inlet pressure is stamped on the
rating label located in the boiler's vestibule
compartment.

2. Maximum gas demand. Table 2 lists boiler input
rate. Also consider existing and expected future gas
utilization equipment (i.e. cooking equipment).

3. Length of piping and number of fi ttings. Refer to
Table 3 for maximum capacity of Schedule 40 pipe.
Table 4 lists equivalent pipe length for standard
fi ttings.

Table 2: Rated Input

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4. Specifi c gravity of gas. Gas piping systems for gas
with a specifi c gravity of 0.70 or less can be sized
directly from Table 3, unless authority having
jurisdiction specifi es a gravity factor be applied. For
specifi c gravity greater than 0.70, apply gravity
factor from Table 5. If exact specifi c gravity is not
shown choose next higher value.

For materials or conditions other than those listed

above, refer to National Fuel Gas Code, NFPA 54/
ANSI Z223.1, or size system using standard
engineering methods acceptable to authority having
jurisdiction.

B. Connect boiler gas valve to gas supply system.

1. Use methods and materials in accordance with local
plumbing codes and requirements of gas supplier. In
absence of such requirements, follow National Fuel
Gas Code, ANSI Z223.1.

2. Use thread (joint) compounds (pipe dope) resistant
to action of liquefi ed petroleum gas.

3. Install sediment trap, ground-joint union and manual

)sehcnI(eziS

shut-off valve upstream of boiler gas control valve
and outside of jacket. See Figure 8.

4. All above ground gas piping upstream from manual
shut-off valve must be electrically continuous and
bonded to a grounding electrode. Do not use gas
piping as grounding electrode. Refer to National
Electrical Code, ANSI/NFP A 70.

Table 3: Maximum Capacity of Schedule 40 Pipe in CFH For Gas Pressures of 0.5 psig or Less

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01231872025050,1571063086004,1

0229091053037021052564059

033725158209579002573077

043603154200528071023066

056551151204437151582085

0605501591004668310620

07646908107316521042094

08340907105375811022064

09044806102335011502034

001839705150305301591004

½¾ 1 ¼1½¾1¼1

porDerusserP.c.whcni3.0 porDerusserP.c.whcni5.0

35

9

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Table 4: Fitting Equivalent Lengths

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C. Pressure test. The boiler and its gas connection must be

leak tested before placing boiler in operation.

1. Protect boiler gas control valve. For all testing over
½ psig, boiler and its individual shutoff valve must
be disconnected from gas supply piping. For testing
at ½ psig or less, isolate boiler from gas supply
piping by closing boiler's individual manual shutoff
valve.

Table 5: Specifi c Gravity Correction Factors

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05.001.103.170.1

55.040.104.140.1

06.000.105.100.1

56.069.006.179.0

07.039.007.149.0

57.009.0

08.078.0

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2. Locate leaks using approved combustible gas
detector, soap and water, or similar nonfl ammable
solution. Do not use matches, candles, open fl ames,
or other ignition source.

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10

Figure 8: Recommended Gas Piping

VI. Venting / Air Intake Piping

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Figure A: Burnham Vent

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A. General Guidelines.

1. Vent system installation must be in accordance with
National Fuel Gas Code, ANSI Z223.1, Venting of
Equipment, or applicable provisions of local
building codes. Contact local building or fi re
offi cials about restrictions and installation inspection
in your area.

2. This appliance requires a Special Gas Vent. The
product is designed to use Burnham supplied
AL 29-4C® Stainless Steel vent system components.
The following manufacturer's offer similar AL 29­4C® components and are approved for use with this
product: Heat-Fab Inc. - Saf-T-Vent, Flex-L
International Inc. - Star-34, Protech Systems, Inc. ­FasNSeal™, and Z-Flex U. S., Inc. - Z-Vent. The
use of these alternate manufacturer's venting
systems will require adapters to connect to the
Burnham supplied vent connector and vent terminal.
These adapters are not supplied with this unit and
should be obtained from the supplier of the alternate
manufacturer's venting system. See Table 7 for
complete parts list.

.tnalaesdnadnabpmalcahtiwdeilppussitnenopmoctnevssel-teksaghcaE

GNINRAW

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3. Vent length restrictions are based on equivalent
length of vent pipe (total length of straight pipe plus
equivalent length of fi ttings). Maximum vent length
is listed in Table 6. Do not exceed maximum vent/
air intake lengths. Table 7 lists equivalent length for
fi ttings. Do not include Vent Terminal or Vent
Connector in equivalent feet calculation.

Table 6: Vent/Air Intake Length

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403,dezinavlaghtiwreliobsihtesutonoD

nonrehtoynaroleetssselniats613ro

11

Table 7: Burnham Vent System Components

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tF5xepiP.aiD"3U00361185

elbatsujdAxepiP.aiD"3U9136118

woblE°09.aiD"3U49261185

woblE°54.aiD"3U29261185

eeTniarDlatnoziroH.aiD"3U2036118½

eeTn

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elbmihTllaWelgniS"36116118---

elbmihTllaWelbuoD"35116118---

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4. Do not install venting system components on the
exterior of the building except as specifi cally
required by these instructions.

5. Thickness of exterior walls through which vent-air
intake system may be installed: Minimum: 3",
Maximum: 12".

B. Removal of Existing Boiler. For installations not

involving the replacement of an existing boiler, proceed
to Step C.

When an existing boiler is removed from a common

venting system, the common venting system is likely to
be too large for proper venting of the remaining
appliances. At the time of removal of an existing boiler,
the following steps shall be followed with each
appliance remaining connected to the common venting
system placed in operation, while the other appliances
remaining connected to the common venting system
are not in operation:

1. Seal any unused openings in the common venting
system.

2. 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.

3. 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 exhausts, so they will operate at maxi mum
speed. Do not operate a summer exhaust fan. Close
fi replace dampers.

4. Place in operation the appliance being inspected.
Follow the Lighting (or Operating) Instructions.

tnelaviuqE

epiPfoteeF

Adjust thermo stat so appliance will operate
continuously.

5. Test for spillage at the drafthood 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.

6. After it has been determined that each appliance
remain ing connected to the common venting system

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)46.1ot60.1(

properly vents when tested as outlined above, return
doors, win dows, exhaust fans, fi replace dampers and
any other gas burning appliance to their previous
conditions of use.

7. Any improper operation of the common venting
system should be corrected so the installation
conforms with the National Fuel Gas Code,
ANSI Z223.1 and/or CAN/CGA B149, Installation
Codes. 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 and/or
CAN/CGA B149, Installation Codes.

C. Install Vent Connector.

1. Remove vent connector from vent accessory carton.

2. Remove gaskets, orifi ce plate and hardware from
blower outlet fl ange.

3. Assemble orifi ce plate gaskets, orifi ce plate, and
vent connector. See Figure 9.

Figure 9: Vent Connector Installation

12

4. Secure vent connector with washers and locknuts.
Do not overtighten.

D. Install Vent Pipe, General.

1. Plan venting system to avoid possible contact with
plumbing or electrical wires. Start at vent connector.
Work toward vent terminal.

2. Use non-combustible ¾ inch pipe strap to support
horizontal runs and maintain vent location and slope
while preventing sags in pipe. Do not restrict
thermal expansion or movement. Maximum support
spacing is 5 feet. Do not penetrate any part of the
vent system with fasteners.

3. Provide and maintain minimum 5 inch clearance to
combustible materials. Use double wall thimble
(Burnham Part No. 8116115) when penetrating
combustible wall. Other wall thimble manufacturers
are American Metal Products, Hart & Cooley, and
Metal Fab.

4. Once a vent pipe manufacturer and system is chosen
never mix and match vent systems.

5. If a non-standard length pipe is required:

The use of the adjustable length pipe (P/N

8116319U) is recommended to complete a non­standard pipe length. This pipe requires a minimum
installed length of 12¾ inch and can adjust across a
7 inch gap up to a maximum of 19¾ inch long.
(Note for the adjustable pipe the installed length
should be measured from the centerline of the bead
on the male end of the fi rst pipe to the end of the
female pipe excluding the locking band of the
second pipe with a single gasket.) Only in the event
the adjustable length pipe is not suffi cient a standard
length pipe may be cut using the procedure outlined
below .

GNINRAW

.epiphtgnelelbatsujdarofsehcni¾91

.elbissopsiegakaelsageulffoksiR

Carefully cut pipe to length using a hacksaw with

minimum 32 teeth per inch or circular saw with
metal abrasive wheel. Remove male (bead) end
only – female (bell) end accepts next fi tting or pipe.

ECITON

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6. Seal all Burnham Gasket-Less vent, Burnham mixed
vent (Gasket-Less and Gasketed) and fi eld cut joints
using Dow Corning Silastic 732 RTV, Dow Corning
Silastic 736 RTV, GE RTV106, Polybac #500 RTV,
Sil-bond RTV 4500 (Acetoxy) and Sil-bond RTV

6500. Do not use other adhesives or sealants.

E. Install Vent Pipe, Burnham Gasket-Less Vent System.

1. Procedure for Joining Burnham Gasket-Less Vent
Pipe and Fittings. See Figure 10A.

Figure 10A: Burnham Gasket-Less Vent Joint

a. Clean joints of pipe or fi ttings using an alcohol

pad to remove any dirt and grease.

b. Slip a locking band over female (bell) end of

pipe/fi tting.

c. Apply a continuous ¼ inch bead of sealant

around male end of joint no more than 1/8 inch
from end.

d. Align weld seams and use a slight twisting

motion to FULLY insert male end into female
end of joint. Ensure bead in male end rest against
the end of the female pipe.

e. Smooth sealant around joint for a continuous

seal. Reapply sealant if necessary.

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F. Install Vent Pipe, Burnham Gasketed Vent System.

f. Slip the locking band over joint and align closest

bead in locking band with bead in male end of
pipe.

g. Tighten locking band by HAND with a 5/16" nut

driver until snug plus ¼ turn. DO NOT
SECURE JOINTS WITH SHEET METAL
SCREWS OR POP RIVETS. DO NOT
PUNCTURE THE VENT SYSTEM!

h. Once the installation is complete, operate

appliance and inspect all joints to ensure that fl ue
gases and/or liquid condensate will not escape.

1. Procedure for Joining Burnham Gasketed Vent Pipe
and Fittings. See Figure 10B.

a. Wipe the male end of each joint using an alcohol

pad to remove any dirt and grease.

13

Figure 10B: Burnham Gasketed Vent Joint Detail

b. Align weld seams in pipes and use a slight

twisting motion to FULLY insert male end into
female end of joint. Ensure bead in male end of
pipe is below locking band and rest against the
end of the female pipe. Verify the factory­installed gasket is not dislodged or cut.

c. Tighten locking band by HAND with a 5/16" nut

driver until snug plus ¼ turn. DO NOT
SECURE JOINTS WITH SHEET METAL
SCREWS OR POP RIVETS. DO NOT
PUNCTURE THE VENT SYSTEM!

d. Once the installation is complete, operate

appliance and inspect all joints to ensure that fl ue
gases and/or liquid condensate will not escape.

G. Install Vent Pipe, Burnham Gasket-Less & Gasketed

Vent System.

1. Procedure for joining the male end of Burnham
Gasket-Less Vent with the female end of Burnham
Gasketed Vent. See Figure 10C.

Figure 10C: Burnham Gasket-Less Male and

Gasketed Female Vent Joint Detail

a. Clean the male end of each joint using an alcohol

pad to remove any dirt and grease.

b. Apply a continuous ¼ inch bead of sealant

around male end of joint no more than 1/8 inch
from end.

c. Align weld seams in pipes and use a slight

twisting motion to FULLY insert male end into
female end of joint. Ensure bead in male end of
pipe is below locking band and rest against the
end of the female pipe. Verify the factory­installed gasket is not dislodged or cut.

d. Smooth sealant around joint for a continuous

seal. Reapply sealant if necessary.

e. Tighten locking band by HAND with a 5/16" nut

driver until snug plus ¼ turn. DO NOT
SECURE JOINTS WITH SHEET METAL
SCREWS OR POP RIVETS. DO NOT
PUNCTURE THE VENT SYSTEM!

f. Once the installation is complete, operate

appliance and inspect all joints to ensure that fl ue
gases and/or liquid condensate will not escape.

2. Procedure for joining the female end of Burnham
Gasket-Less Vent with the male end of Burnham
Gasketed Vent. See Figure 10D.

Figure 10D: Burnham Gasket-Less Female and

Gasketed Male Vent Joint Detail

a. Clean joints of pipe or fi ttings using an alcohol

pad to remove any dirt and grease.

b. Slip a locking band over female (bell) end of

pipe/fi tting.

c. Apply a continuous ¼ inch bead of sealant

around male end of joint no more than 1/8 inch
from end.

d. Align weld seams in pipes and use a slight

twisting motion to FULLY insert male end into
female end of joint.

e. Smooth sealant around joint for a continuous

seal. Reapply sealant if necessary.

f. Slip the locking band over joint and align closest

bead in locking band with bead in male end of
pipe.

g. Tighten locking band by HAND with a 5/16" nut

driver until snug plus ¼ turn. DO NOT
SECURE JOINTS WITH SHEET METAL
SCREWS OR POP RIVETS. DO NOT
PUNCTURE THE VENT SYSTEM!

h. Once the installation is complete, operate

appliance and inspect all joints to ensure that fl ue
gases and/or liquid condensate will not escape.

H. Horizontal (Through Wall) Vent Installation.

1. Maintain minimum ¼ inch per foot slope in
horizontal runs. Position weld seams in vent pipes
in all horizontal runs at the top to avoid condensate
from lying on the seams.

14

a. Recommended Installation: slope toward vent

terminal. See Figure 11.

b. Alternate Installation (where recommended

installation is not practical): slope toward boiler.
Horizontal vent drain tee (see Table 7 for part
number) required. See Figure 12.

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2. Vent terminal location restricted per following:
a. Minimum 12 inches above grade or normally

expected snow accumulation level, or 7 feet
above grade if located adjacent to public
walkway. Do not install over public walkways or
areas where local experience indicates
condensate or vapor from Category III
appliances creates a nuisance or hazard .

b. Minimum 3 feet above any forced air inlet

located within 10 feet.

c. Minimum 1 foot below, 1 foot horizontally from,

or 1 foot above any door, openable window,
gravity air inlet, or building opening through
which fl ue gases could enter any building
(including adjacent buildings).

Figure 11: Recommended Horizontal Vent Installation

Figure 12: Alternate Horizontal Vent Installaltion

15

d. Minimum 4 feet (6 feet in Canada) horizontally

from electric meters, gas meters, regulators, and
relief equipment.

e. Minimum 12 inches from overhang or corner.

3. Use double wall thimble when passing through
combustible outside wall (thimble use optional for
noncombustible wall). Insert thimble through wall
from outside. Secure outside fl ange to wall with
nails or screws, and seal OD, ID and vent holes with
sealant material. Install inside fl ange to inside wall,
secure with nails or screws, and seal with sealant
material.

4. For noncombustible wall when thimble is not used,
size opening such that female (bell) end with
locking band attached cannot pass through.

5. Join vent terminal to vent pipe. Locate vent terminal
between 3" and 6" from wall when joined to inside
vent piping. See Figure 13.

6. Insert vent pipe through thimble/opening from
outside and join to vent system. Apply sealant
between vent pipe and opening/thimble to provide
weathertight seal.

Figure 15: Vent/Air Intake Terminal Relationship

Horizontal (thru wall) or Vertical (thru roof)

Figure 13: Horizontal Vent Pipe Wall Penetration

I. Vertical (Through Roof) Vent Installation

1. Install vertical vent drain tee (see Table 7 for part
number). See Figure 16. Attach tee directly to
elbow or horizontal pipe from elbow.

2. Install condensate drain line. Use 3/8 inch i.d. high
temperature fl exible tubing such as silicone rubber
or EPDM. See Figure below.

a. Form condensate trap with 6 inch diameter loop.

Secure loop with plastic cable tie. Fill with
water.

Figure 14: Horizontal Air Intake Pipe Wall

Penetration

16

Figure 16: Vertical Vent Installation

b. Secure to vertical vent tee with hose clamp or

plastic cable tie.

c. Run condensate drain line to fl oor drain or

condensate pump. Condensate disposal must be
acceptable to authority having jurisdiction.

3. Slope horizontal runs minimum ¼ inch per foot.
Slope toward vertical vent drain tee. Position weld
seams in vent pipes in all horizontal runs at the top
to avoid condensate from lying on the seams.

4. Install fi restops at fl oor and ceiling where vent
passes through fl oor, ceiling, or framed wall. The
fi restop must close the fl oor or ceiling opening
between vent pipe and structure. Firestop
manufacturers are Air-Jet, American Metal Products,
Metal-Fab, and Simpson Dura-Vent.

5. Enclose vent passing through unoccupied or
occupied spaces above the appliance with materials
having a fi re resistance rating at least equal to the
rating of adjoining fl oor or ceiling. Maintain 5 inch
minimum clearance to combustible materials. Note:
For one-or two-family dwellings fi re resistance
rating requirement may not need to be met, but is
recommended.

6. Whenever possible install vent straight through roof.
Refer to Figure 17 if offset is necessary. Maintain 5
inch minimum clearance to combustible materials.

7. Install Vent Terminal. See Figure 18.
a. Locate roof opening to allow vertical vent

penetration. Size opening to maintain 5 inch
minimum clearance from combustible materials.

b. Vertical venting requires use of roof fl ashing

(available from Burnham - P/N 8116250) and
storm collar (available from Burnham - P/N

8116251) to prevent moisture from entering the
structure.

c. Extend vent pipe to maintain minimum vertical

and horizontal distance of 12 inches from roof
surface. Allow additional vertical distance for
expected snow accumulation. Provide brace as
required. Refer to Figure 18.

d. Install storm collar on vent pipe immediately

above roof fl ashing. Apply Dow Corning
Silastic 732 RTV Sealant between vent pipe and
storm collar to provide weathertight seal..

e. Attach Vent Terminal.

J. Install Air Intake Pipe.

1. Locate air intake termination on the same wall or
roof location as the vent termination if possible, to
prevent nuisance boiler shutdowns. However, boiler

Figure 17: Attic Offset

Figure 18: Vertical Vent Termination

Extend Vent/Air Intake Piping to maintain minimum vertical ("X") and minimum horizontal ("Y") distance

of twelve (12) inches from roof surface. Allow additional vertical ("X") distance for expected snow

Figure 19: Vertical Air Intake Termination

17

may be installed with vertical venting and sidewall
combustion air inlet if installation conditions do not
allow alternate arrangement.

2. Use 4 inch diameter single wall metal pipe, fi ttings,
fi restop(s), roof fl ashing and storm collar available
at most heating distributors.

3. Start at air intake connector. Work toward air intake
terminal.

VII. Electrical

4. Maintain minimum of ¼ inch per foot slope in
horizontal runs to air intake terminal. Slope down
toward air intake terminal.

5. Seal all joints gas-tight, using silicone caulk or self­adhesive aluminum tape.

6. Install air intake terminal. See Figures 14 and 19.

A. General. Install wiring and ground boiler in accordance

with requirements of authority having jurisdiction, or in
absence of such requirements the National Electrical
Code, ANSI/NFPA 70, and/or the CSA C22.1 Electric
Code.

B. Install thermostat. Locate on inside wall

approximately 4 feet above fl oor. Do not install on
outside wall, near fi replace, or where infl uenced by
drafts or restricted air fl ow, hot or cold water pipes,
lighting fi xtures, television, or sunlight. Allow free air
movement by avoiding placement of furniture near
thermostat.

C. Wire thermostat. Provide Class II circuit between

thermostat and boiler. Set thermostat heat anticipator to

0.6 amps. See Figure 20.

D. Wire boiler. Boiler is rated for 120 VAC, 60 hertz, less

than 12 amperes. A separate electrical circuit must be
run from the main electrical service with an over­current device/disconnect in the circuit. A service
switch is recommended and may be required by some
local jurisdictions. Connect circuit to black and white
wires and green ground screw. See Figure 20.

18

Figure 20: Wiring Diagram

VIII. System Start-up

A. Safe operation and other performance criteria were

met with gas manifold and control assembly provided
on boiler when boiler underwent tests specifi ed in

American National Standard for Gas-Fired Low­Pressure Steam and Hot Water Boilers, ANSI Z21.13.

B. FILL ENTIRE HEATING SYSTEM WITH WATER

and vent air from system. Use the following procedure
on a Series Loop System equipped with zone valves.
(See Figure 4).

1. Close isolation valve in boiler supply piping.

2. Isolate all circuits by closing zone valves or
balancing valves.

3. Attach a hose to hose bib located just below
isolation valve in boiler supply piping. (Note ­Terminate hose in fi ve gallon bucket or at a suitable
fl oor drain or outdoor area).

4. Starting with one circuit, open zone valve.

5. Open hose bib.

6. Open manual fi ll valve (Make-up water line should
be located directly above isolation valve in boiler
supply piping).

7. Allow water to overfl ow from bucket until discharge
from hose is bubble free for 30 seconds.

8. Open zone valve to the second zone to be purged,
then close the fi rst. Repeat this step until all zones
have been purged, but always have one zone open.
At completion, open all zone valves.

9. Close hose bib, continue fi lling the system until the
pressure gauge reads between 12 and 15 psi. Close
fi ll valve.

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10. Open isolation valve in boiler supply piping.

11. Remove hose from hose bib.

C. Prepare to check operation.

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1. Obtain gas heating value (in BTU per cubic foot)
from gas supplier.

2. Connect manometer to pressure tap on gas valve.
Use 1/8 NPT tapping provided.

3. Temporarily turn off all other gas-fi red appliances.

Figure 21: Sequence of Operation

19

Figure 22: Operating Instructions

D. Follow Operating Instructions to place boiler in

operation. See Figure 22.

E. Sequence of Operation. See Figure 21. If boiler fails

to operate properly, see Troubleshooting Tree on pages
26-27.

F. Check pilot burner fl ame. See Figure 24. Flame

should be steady, medium hard blue enveloping 3/8 to
½ inch of sensing probe.

20

G. Check main burner fl ame. See Figure 23. Flame

should have clearly defi ned inner cone with no yellow
tipping. Orange-yellow streaks should not be confused
with true yellow tipping.

H. Check thermostat operation. Raise and lower

temperature setting to start and stop boiler operation.

I. Check domestic hot water (tank) aquastat operation.

Raise and lower temperature setting to start and stop
boiler operation. Tank aquastat should be set at least

Figure 23: Main Burner Flame

Figure 24: Pilot Burner Flame

20°F below boiler high limit setting to allow tank water
to reach desired temperature before boiler water reaches
the high limit setting.

J. Ignition system safety device test. Disconnect ignitor/

sensor cable from Terminal 9 (SPARK). Gas valve
should close and pilot and main burners should
extinguish.

K. Check water pressure switch.

1. Adjust thermostat to highest setting.

2. Connect hose to drain valve and run to bucket or
fl oor drain. With boiler operating, partially open
drain valve and slowly drain boiler.

3. Main burners and pilot burner will extinguish and
blower stop when water pressure drops below 10
psi. Verify limit, thermostat or other controls have
not shut off boiler.

4. Close drain valve.

5. Adjust thermostat to lowest setting. Refi ll boiler.

L. Check Boiler High Limit.

1. Adjust thermostat to highest setting.

2. Observe temperature gauge. When temperature is
indicated, adjust limit to setting below observed
temperature. Main burners and pilot burner should
extinguish, and blower stop.

3. Adjust limit to setting above observed temperature.
Ignition sequence should begin.

4. Adjust thermostat to lowest setting. Adjust limit to
desired setting, at least 20°F above the tank aquastat
setting.

M. Adjust gas input rate to boiler.

1. Adjust thermostat to highest setting.

2. Check manifold gas pressure. Pressure should be
stamped on the rating label located in the boiler's
vestibule compartment. Adjust gas valve pressure
regulator as necessary (turn adjustment screw
counterclockwise to decrease manifold pressure, or
clockwise to increase manifold pressure). If pressure
cannot be attained, check gas valve inlet pressure. If
less than minimum indicated on the boiler's rating
label, contact gas supplier for assistance.

3. Clock gas meter for at least 30 seconds. Use Table 9
to determine gas fl ow rate in Cubic Feet per Hour.

21

4. Determine Input Rate. Multiply gas fl ow rate by gas
heating value.

Table 9: Gas Flow Rate in Cubic Feet per Hour

5. Compare measured input rate to input rate stated on
rating plate.

a. Boiler must not be overfi red. Reduce input rate

by decreasing manifold pressure. Do not reduce
more than 0.2 inch w.c. If boiler is still overfi red,
contact your Burnham distributor or Regional
Offi ce for replacement Gas Orifi ces.

b. Increase input rate if less than 98% of rating

plate input. Increase manifold gas pressure no
more than 0.2 inch w.c. If measured input rate is
still less than 98% of rated input:

i. Remove Main Burners per procedure in

Section IX: Service.

ii. Remove gas orifi ces. Drill one (1) drill size

larger (drill size is stamped on orifi ce, or see
Key No. 4C in Section X: Repair Parts).

iii. Reinstall gas orifi ces and main burners.

Measure input rate.

6. Recheck Main Burner Flame.

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7. Return other gas fi red appliances to previous
conditions of use.

N. Review User's Information Manual and system

operation with owner or operator.

851326421

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22

IX. Service

A. General. Inspection and service should be conducted

annually. Turn off electrical power and gas supply while
conducting service or maintenance. Follow instructions
TO TURN OFF GAS TO APPLIANCE. See Figure 22.

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B. Inspect domestic hot water coil gasket for water

leakage. Tighten nuts or replace gasket if leakage is

evident.

C. Low water cut-off (if so equipped).

1. Float Type
a. Monthly Blowoff. During the heating season, if

an external fl oat type low water cut-off is on the
boiler, the blow off valve should be opened once
a month (use greater frequency where conditions
warrant), to fl ush out the sediment chamber so
the device will be free to function properly.

b. Annual Service. Float type low water cutoffs

should be dismantled annually by qualifi ed
personnel, to the extent necessary to insure
freedom from obstructions and proper
functioning of the working parts. Inspect
connecting lines to boiler for accumulation of
mud, scale, etc., and clean as required. Examine
all visible wiring for brittle or worn insulation
and make sure electrical contacts are clean and
that they function properly. Give special
attention to solder joints on bellows and fl oat
when this type of control is used. Check fl oat for
evidence of collapse and check mercury bulb
(where applicable) for mercury separation or
discoloration.

2. Probe Type (Annual Service). Probe type LWCO
should be removed once a year, examined and
cleaned of any dirt accumulations to assure proper
operations. Do not attempt to repair mechanisms in
the fi eld. Complete replacement mechanisms,
including necessary gaskets and installation
instructions, are available from the manufacturer.

D. Vent/Air Intake System. Inspect for obstructions, soot

accumulation, proper support, and deterioration of pipe,
fi ttings, and joints.

1. Clean terminal screens. Terminals must be free of
obstruction, undamaged, with screens securely in
place.

2. Terminal and wall thimbles (if used) must be
weathertight.

3. Pipe must be full round shape, and show no damage
from impact or excessive temperature.

4. Pipe must be supported at minimum 5 foot intervals
and must not sag.

5. All vent joints must be secure and watertight.

6. All air intake joints must be secure and airtight.
Horizontal vent tee drain (if used) must have
minimum 6 inch trap and allow condensate to fl ow
freely. To Clean:

a. Disconnect drain tube from drain fi tting.
b. Flush drain tube with water. Fill trap with water.
c. Securely fasten drain tube to drain fi tting,

providing gas-tight and watertight seal.

7. If pipe must be disassembled for removal of
obstructions or resealing of joint:

a. Remove locking band (vent pipe only).
b. Break skin of sealant with utility knife. Do not

cut or score pipe.
c. Pull pipe from fi tting.
d. Clean pipe and fi tting of all cured sealant.
e. Join pipe and fi tting as described in Section VI:

Venting/Air Intake Piping.

E. Boiler Flue Passages. Inspect for blockage or soot

accumulation.

1. Remove Main Burners. See Figure 25.
a. Remove jacket front door.

b. Remove combustion air enclosure cover.
c. Remove Burner Access Panel by lifting up and

out.

d. Disconnect Ignitor/Sensor Wire from pilot

burner.

e. Mark location of Main Burner with Pilot Bracket

on gas manifold.
f. Remove External Hitch Pin Clips.
g. Hold Main Burner on throat. Lift slightly while

pushing toward rear of boiler to disengage from

Burner Tray and to clear Gas Orifi ce. Pull Main

Burner from combustion chamber.

2. Remove four (4) locknuts securing vent connector.

23

See Figure 9. Disconnect vent connector and vent
pipe from blower outlet.

5. Install main burners by reversing procedure to
remove burners.

3. Remove Jacket Top Panels.

4. Disconnect Red and Black Silicone Tubing from
Canopy. Pull tubing through Blower Access panel
into vestibule.

5. Disconnect wiring harness from Blower Motor.

6. Remove Canopy/Blower Assembly.
a. Remove four (4) machine screws securing

canopy to heat exchanger.

b. Remove ceramic fi ber gasketing from top of heat

exchanger.

c. Pry canopy from boiler sections.

7. Inspect fl ue passages. Clean with fl ue brush. See
Figure 25.

8. Inspect heating surface in combustion chamber.
Clean with straight handle wire brush.

9. Replace Canopy/Blower Assembly and seal using
ceramic fi ber gasketing. Refer to Key No. 2 in
Repair Parts Section for quantity and part number.

10. Connect Silicone Tubing between Pressure Fittings
on Canopy Assembly and Pressure Switch. See
Figure 26.

11. Install Jacket Top Panels.

12. Connect vent system. See Figure 9.

13. Connect Blower Motor Wiring Harness.

F. Main Burners and Combustion Chamber.

1. Vacuum combustion chamber. Exercise care - do
not damage base insulation.

2. Clean main burners. Brush top of burners with soft
bristle brush. See Figure 25. Vacuum to remove any
dirt and lint.

a. Pilot burner must be installed in original

location. See Table 10.

b. Main burners must be properly secured in burner

tray slot at rear of combustion chamber and over

gas orifi ce with hitch pin in place. See Figure 25.
c. Burner access panel must be securely in place.
d. Verify that Combustion Air Diffuser is securely

in place.
e. If Flame Roll-out Switch wires were

disconnected, they must be reconnected.
f. Air Intake Box Cover must be installed.

G. Check operation. Follow steps C through L from

Section VIII: System Start-up.

H. Procedure for Measuring Fan Differential Pressure.

(See Figure 27).

1. With boiler off, remove gray and black hoses at
differential pressure switch.

2. With tees, connect water manometer as shown with
additional tubing.

3. Start boiler and read pressure on manometer when
boiler water temperature reaches operating
temperature. Refer to Table 11 for minimum
readings.

NOTE: If switch drops-out before boiler reaches

temperature or if differential pressure readings are
below minimums shown in Table 11, check for
cracks in hoses or contact your nearest Burnham
representative.

4. Stop boiler, remove manometer and reconnect hoses
to pressure switch. See Figure 26.

I. Lubrication

3. Vacuum tip of pilot burner.

4. Check gas orifi ces for lint and dirt. Clean as
necessary.

24

There are no parts requiring lubrication on the part of

the Service Technician or the User. Circulator bearings
are water lubricated. Combustion blower motor uses
sealed bearings.

Figure 25: Burner and Flueway Cleaning

25

Figure 26: Silicone Tubing Assembly

Table 10: Pilot Burner Location

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Warning:
This product contains refractory ceramic fi bers (RCF). RCF has been

classifi ed as a possible human carcinogen. After this product is fi red, RCF
may, when exposed to extremely high temperature (>1800F), change into a
known human carcinogen. When disturbed as a result of servicing or repair,
RCF becomes airborne and, if inhaled, may be hazardous to your health.

AVOID Breathing Fiber Particulates and Dust

Precautionary Measures:
Do not remove or replace previously fi red RCF (combustion chamber

insulation, target walls, canopy gasket, fl ue cover gasket, etc.) or attempt
any service or repair work involving RCF without wearing the following
protective gear:

1. A National Institute for Occupational Safety and Health
(NIOSH) approved respirator

2. Long sleeved, loose fi tting clothing

3. Gloves

4. Eye Protection

• Take steps to assure adequate ventilation.

• Wash all exposed body areas gently with soap and water after

contact.

• Wash work clothes separately from other laundry and rinse washing
machine after use to avoid contaminating other clothes.

• Discard used RCF components by sealing in an air tight plastic bag.

First Aid Procedures:

• If contact with eyes: Flush with water for at least 15 minutes.

Seek immediate medical attention if irritation persists.

• If contact with skin: Wash affected area gently with soap and

water. Seek immediate medical attention if irritation persists.

• If breathing diffi culty develops: Leave the area and move to a

location with clean fresh air. Seek immediate medical attention
if breathing diffi culties persist.

• Ingestion: Do not induce vomiting. Drink plenty of water. Seek

immediate medical attention.

27

282930

X. Repair Parts

All Minuteman® II Repair Parts may be obtained through your local Burnham Wholesale distributor.
Should you require assistance in locating a Burnham Distributor in your area, or have questions re­garding the availability of Burnham products or repair parts, please contact Burnham Customer Ser­vice at [phone] or Fax [phone].

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39

Limited WarrantyLimited Warranty

Limited Warranty

Limited WarrantyLimited Warranty

FOR MINUTEMAN® II BOILER/WATER HEATER

Subject to the terms and conditions set forth below, U.S. Boiler™ Co., Inc.,
Lancaster, Pennsylvania (“U.S. Boiler Co., Inc.”) hereby extends the following
limited warranties to the original owner of a Minuteman® II Boiler/Water Heater
manufactured and shipped on or after July 1, 1996:

ONE YEAR LIMITED WARRANTY ON

MINUTEMAN® II BOILER/WATER HEATER

U.S. Boiler Co., Inc. warrants to the original owner that its Minuteman® II
Boiler/Water Heater complies at the time of manufacture with recognized
hydronic industry standards and requirements then in effect and will be free of
defects in material and workmanship under normal usage for a period of one
year from the date of original installation. If any part of a water boiler is found to
be defective in material or workmanship during this one year period, U.S. Boiler
Co., Inc. will, at its option, repair or replace the defective part.

FIVE YEAR LIMITED WARRANTY

ON WATER HEATER RESERVOIR

U.S. Boiler Co., Inc. warrants to the original owner that the water heater
reservoir of its Minuteman® II Boiler/Water Heater will remain free from defects
in material and workmanship under normal usage for five years from the date of
original installation. If the water heater reservoir is found to be defective in
material or workmanship during this five year period, U.S. Boiler Co., Inc. will, at
its option, repair or replace the defective water heater reservoir.

LIFETIME LIMITED WARRANTY

ON CAST IRON HEAT EXCHANGER

U.S. Boiler Co., Inc. warrants to the original owner that the cast iron heat
exchanger of its Minuteman® II Boiler/Water Heater will remain free from defects
in material and workmanship under normal usage for the lifetime of the original
owner at the original place of installation. If a claim is made under this warranty
during the first ten years from the date of original installation, U.S. Boiler Co.,
Inc. will, at its option, repair or replace the cast iron heat exchanger. If a claim is
made under this warranty after the expiration of ten years from the date of
original installation, U.S. Boiler Co., Inc. will, at its option and upon payment of
the pro-rated service charge set forth below, repair or replace the cast iron heat
exchanger. The service change applicable to a cast iron heat exchanger
warranty claim is based upon the number of years the cast iron heat exchanger
has been in service and will be determined as a percentage of the retail price of
the cast iron heat exchanger model involved at the time the warranty claim is
made as follows:

sraeY

ecivreSnI

fo%sa

ecirPliateR

sraeY

ecivreSni

fo%sa

ecirPliateR

NOTE: If the cast iron heat exchanger model involved is no longer available due
to product obsolescence or redesign, the value used to establish the retail price
will be the published price as shown in the Burnham Hydronics Repair Parts
Price Sheet where the cast iron heat exchanger last appeared or the current
retail price of the then available nearest equivalent cast iron heat exchanger.

only to the original owner at the original place of installation within the United
States and Canada. This warranty is applicable only to the Minuteman® II Boiler/
Water Heater installed in a single or two-family residence and does not apply to
any commercial installations.

limited warranty on the Minuteman® II Boiler/Water Heater, all boiler components
manufactured by others but furnished by U.S. Boiler Co., Inc. (such as oil
burner, circulator and controls) will be subject only to the manufacturer’s
warranty, if any.

conditioned upon the installation of the Minuteman® II Boiler/Water Heater in

1. Applicability: The limited warranties set forth above are extended

2. Components Manufactured by Others: Upon expiration of the one year

3. Proper Installation: The warranties extended by U.S. Boiler Co., Inc. are

01-111213141516171

egrahCecivreS

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5015102520353

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81910212223242

egrahCecivreS

0454055506560757

ADDITIONAL TERMS AND CONDITIONS

dna52

evoba

strict compliance with U.S. Boiler Co., Inc. installation instructions. U.S. Boiler
Co., Inc. specifically disclaims liability of any kind caused by or relating to
improper installation.

4. Proper Use and Maintenance: The warranties extended by U.S. Boiler
Co., Inc. are conditioned upon the use of the Minuteman
for its intended purposed and its maintenance in accordance with U.S. Boiler
Co., Inc.’s recommendations and hydronics industry standards. These warran­ties will be inapplicable if the Minuteman
operated over its rated capacity, is subjected to unauthorized modification, or is
damaged as a result of being otherwise improperly operated or serviced
including, but not limited to, damage from any of the following: operation with
insufficient water, allowing the boiler to freeze, subjecting the boiler to flood
conditions, and operation with unapproved water or fuel additives which cause
deposits or corrosion.

5. Removal and Installation: These warranties do not cover expenses of
removal or reinstallation. The owner is responsible for the cost of removing and
reinstalling any defective part and its replacements and all labor and material
connected therewith.

6. Exclusive Remedy: U.S. Boiler Co., Inc.’s obligation for any breach of
these warranties is limited to the repair or replacement of its parts in accordance
with the terms and conditions of these warranties.

7. Limitation of Damages: Under no circumstances shall U.S. Boiler Co.,
Inc. be liable for incidental, indirect, special or consequential damages of any
kind whatsoever under these warranties, including, but not limited to, injury or
damage to persons or property and damages for loss of use, inconvenience or
loss of time. U.S. Boiler Co., Inc.’s liability under these warranties shall under no
circumstances exceed the purchase price paid by the owner for the Minuteman
II Boiler/Water Heater involved. Some states do not allow the exclusion or
limitation of incidental or consequential damages, so the above limitation or
exclusion may not apply to you.

8. Limitation of Warranties: These warranties set forth the entire obligation
of U.S. Boiler Co., Inc. with respect to any defect, in a Minuteman® II Boiler/
Water Heater and U.S. Boiler Co., Inc. shall have no express obligations,
responsibilities or liabilities of any kind whatsoever other than those set forth
herein. These warranties are given in lieu of all other express warranties.

ALL APPLICABLE IMPLIED WARRANTIES, IF ANY, INCLUDING ANY
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE ARE EXPRESSLY LIMITED IN DURATION TO A PERIOD OF ONE
YEAR, EXCEPT THAT IMPLIED WARRANTIES, IF ANY, APPLICABLE TO THE
CAST IRON HEAT EXCHANGER IN A MINUTEMAN® II BOILER/WATER
HEATER SHALL EXTEND TO THE ORIGINAL OWNER FOR THE LIFETIME OF
THE ORIGINAL OWNER AT THE ORIGINAL PLACE OF INSTALLATION. Some
states do not allow limitation on how long an implied warranty lasts, so the
above limitation may not apply to you.

PROCEDURE FOR OBTAINING WARRANTY SERVICE

In order to assure prompt warranty service, the owner is requested to
complete and mail the attached Warranty Card within ten days after the
installation of the boiler, although failure to comply with this request will not void
the owner’s rights under these warranties.

Upon discovery of a condition believed to be related to a defect in material or
workmanship covered by these warranties, the owner should notify the installer
who will in turn notify the distributor, if this action is not possible or does not
produce a prompt response, the owner should write to: Burnham Hydronics,
P.O. Box 3079, Lancaster, PA 17604, giving full particulars in support of this
claim.

The owner is required to make available for inspection by
U.S. Boiler Co., Inc. or its representative the parts claimed to be defective and,
if requested by U.S. Boiler Co., Inc., to ship these parts prepaid to Burnham
Hydronics at the above address for inspection or repair. In addition, the owner
agrees to make all reasonable efforts to settle any disagreement arising with a
claim before resorting to legal remedies in the courts.

THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY
ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE.

®

II Boiler/Water Heater is used or

®

II Boiler/Water Heater

03/03

®