Burnham Pvg Users Manual

PVG to the manual 321b5d6e-a95f-48a7-8a5c-f7a6100dec03

2015-02-04

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IN S TAL L AT ION , OP E R AT IN G AN D
S E R V IC E IN S T R U C T ION S F OR

P V G™

GA S - F I R E D BOI L E R

As an ENERGY STAR® Partner, Burnham Hydronics has determined that the PVG Series meets the ENERGY
STAR® guidelines for energy efficiency established by the United States Environmental Protection Agency (EPA).

F o r s e rvi c e o r r e p a i rs to b o i le r, c a ll yo ur he a ti ng c o ntra c to r. W he n s e e k i ng i nfo rma ti o n o n
b o i le r, p ro vi d e B o i le r M o d e l Numb e r a nd S e ri a l Numb e r a s s ho wn o n Ra ti ng L a b e l.
B o i le r Mo d e l Num b e r

B o i l e r S e r i a l N um b e r

Ins ta lla ti o n D a te

PVG
He a ti ng C o ntra c to r

P ho ne Numb e r

A d d re s s

8140708R8-8/08

Price - $5.00

IMPORTANT INFORMATION - READ CAREFULLY
NOTE: The equipment shall be installed in accordance with those installation regulations enforced in the area where the

installation is to be made. These regulations shall be carefully followed in all cases. Authorities having jurisdiction

shall be consulted before installations are made.
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.
The New York City Department of Buildings has approved the PVG™ Series boiler: Approval No. MEA 5-06-E Vol. II.
The City of New York requires a Licensed Master Plumber supervise the installation of this product.
The Massachusetts Board of Plumbers and Gas Fitters has approved the PVG™ Series 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.

DANGER

CAUTION

Indicates an imminently hazardous situation
which, if not avoided, will result in death, serious
injury or substantial property damage.

Indicates a potentially hazardous situation which,
if not avoided, may result in moderate or minor
injury or property damage.

WARNING

NOTICE

Indicates a potentially hazardous situation which,
if not avoided, could result in death, serious injury
or substantial property damage.

Indicates special instructions on installation,
operation, or maintenance which are important
but not related to personal injury hazards.

DANGER
DO NOT store or use gasoline or other flammable vapors or liquids in the vicinity of this or any other
appliance.
If you smell gas vapors, NO NOT try to operate any appliance - DO NOT touch any electrical switch or use
any phone in the building. Immediately, call the gas supplier from a remotely located phone. Follow the gas
supplier’s instructions or if the supplier is unavailable, contact the fire department.

WARNING
This boiler requires regular maintenance and service to operate safely. Follow the instructions contained
in this manual.
Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal
injury or loss of life. Read and understand the entire manual before attempting installation, start-up
operation, or service. Installation and service must be performed only by an experienced, skilled, and
knowledgeable installer or service agency.
This boiler must be properly vented.
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 system must be inspected and cleaned before the start of the heating season
and should be inspected periodically throughout the heating season for any obstructions. A clean and
unobstructed venting system is 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.
Installation is not complete unless a pressure relief valve is installed into the tapping located on top of
appliance. - See the Water Piping and Trim Section of this manual for details.
This boiler is supplied with safety devices 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
unattended 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 contains very hot water under high pressure. 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.
Boiler 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.
Failure to follow all instructions in the proper order can cause personal injury or death. Read all instructions, including all those contained in component manufacturers manuals which are provided with the
boiler before installing, starting up, operating, maintaining or servicing.
Keep boiler area clear and free from combustible materials, gasoline and other flammable vapors or
liquids.
All cover plates, enclosures and guards must be in place at all times.

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.

Table of Contents

I. Pre-Installation................................ 6

VI. Electrical........................................ 28

II. Unpack Boiler................................. 7

VII. Modular Installation..................... 37

III. Venting............................................ 8

VIII. System Start-up............................. 39

IV. Water Piping and Trim.................. 20

IX. Service........................................... 46

V. Gas Piping..................................... 25

X. Repair Parts................................... 52

Figure 1: Minimum Clearances to Combustibles

Figure 2: Dimensions

I. Pre-Installation
WARNING
If you do not follow these instructions exactly,
a fire or explosion may result causing property
damage or personal injury.

F. Provide combustion and ventilation air in accordance

with applicable provisions of local building codes,
or: USA - National Fuel Gas Code, NFPA 54/ANSI
Z223.1, Air for Combustion and Ventilation;
Canada - Natural Gas or Propane Installation Code,
CAN/CSA-B149.1.

DANGER
Do not install boiler where gasoline or other
flammable vapors or liquids, or sources of
hydrocarbons (i.e. bleaches, cleaners, chemicals,
sprays, paint removers, fabric softeners, etc.) are
used or stored.

NOTICE
Due to the low water content of the boiler, missizing of the boiler with regard to the heating
system load will result in excessive boiler cycling
and accelerated component failure. Burnham
DOES NOT warrant failures caused by mis-sized
boiler applications. DO NOT oversize the boiler to
the system. Modular boiler installations greatly
reduce the likelihood of boiler oversizing.

A. Installation must conform to the requirements of the

authority having jurisdiction. In the absence of such
requirements, installation must conform to the National
Fuel Gas Code, NFPA 54/ANSI Z223.1, and/or CAN/
CSA B149.1 Installation Codes.

B. Appliance is design certified for installation on
combustible flooring. Do not install boiler on
carpeting.

C. Provide clearance between boiler jacket and

combustible material in accordance with local fire
ordinance. Refer to Figure 1 for minimum listed
clearance from combustible material. Recommended
service clearance is 24 inches from left side, right
side and front. Service clearances may be reduced to
minimum clearances to combustible materials.

D. Install on level floor. For basement installation provide

solid base such as concrete, if floor is not level or if
water may be encountered on floor around boiler. Floor
must be able to support weight of boiler, water and all
additional system components.

E. Protect gas ignition system components from water

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

WARNING
Adequate combustion and ventilation air must
be provided to assure proper combustion.
The following guideline is based on the National Fuel Gas
Code, NFPA 54/ANSI Z223.1.
1. Determine volume of space (boiler room). Rooms
communicating directly with space (through
openings not furnished with doors) are considered
part of space.

Volume [ft³] = Length [ft] x Width [ft] x Height [ft]

2. Determine Total Input of all appliances in space.
Round result to nearest 1,000 Btu per hour (Btuh).
3. Determine type of space. Divide Volume by Total
Input.
a. If result is greater than or equal to 50 ft³ per
1,000 Btuh, space is considered an unconfined
space.
b. If result is less than 50 ft³ per 1,000 Btuh, space
is considered a confined space.
4. Determine building type. A building of unusually
tight construction has the following characteristics:
a. Walls and ceiling exposed to outside atmosphere
have a continuous water vapor retarder with a
rating of 1 perm or less with openings gasketed
and sealed, and;
b. Weather-stripping has been added on openable
windows and doors, and;
c. Caulking or sealants applied in joints around
window and door frames, between sill plates and
floors, between wall-ceiling joints, between wall
panels, at plumbing and electrical penetrations,
and at other openings.
5. For boiler located in an unconfined space in a
building of other than unusually tight construction,
adequate combustion and ventilation air is normally
provided by fresh air infiltration through cracks
around windows and doors.
6. For boiler located within unconfined space in
building of unusually tight construction or within
confined space, provide outdoor air through two
permanent openings which communicate directly or

by duct with the outdoors or spaces (crawl or attic)
freely communicating with the outdoors. Locate one
opening within twelve (12) inches of top of space.
Locate remaining opening within twelve (12) inches
of bottom of space. Minimum dimension of air
opening is three (3) inches. Size each opening per
following:

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 one (1) square inch per 1,000 Btu per hour
input of all equipment in spaces, but not less than
100 square inches.
7. Combustion Air/Ventilation Duct Louvers and
Grilles. Equip outside openings with louvers to
prevent entrance of rain and snow, and screens to
prevent entrance of insects and rodents. Louvers and
grilles must be fixed in open position or interlocked
with equipment to open automatically before burner
operation. Screens must not be smaller than ¼ inch
mesh.

a. Direct communication with outdoors. Minimum
free area of one (1) square inch per 4,000 Btu per
hour input of all equipment in space.
b. Vertical ducts. Minimum free area of one (1)
square inch per 4,000 Btu per hour input of all
equipment in space. Duct cross-sectional area
shall be same as opening free area.
c. Horizontal ducts. Minimum free area of one (1)
square inch per 2,000 Btu per hour input of all
equipment 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

Consider the blocking effect of louvers, grilles and
screens when calculating the opening size to provide
the required free area. If free area of 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.

CAUTION
Avoid operating this boiler in an environment where saw dust, loose insulation fibers, dry wall dust, etc.
are present. If boiler is operated under these conditions, the burner interior and ports must be cleaned and
inspected daily to insure proper operation.

II. Unpack Boiler
CAUTION

WARNING

Do not drop boiler. Do not bump boiler jacket
against floor.

Installation of this boiler should be undertaken
only by trained and skilled personnel from a
qualified service agency.

A. Move boiler to approximate installed position.
B. Remove all crate fasteners.
C. Lift and remove outside container. Save two of the

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

D. Remove all boiler hold-down fasteners.

E. Tilt the boiler to its front side or back side and slide a
wooden slat under the three raised feet.

F. Tilt the boiler in the opposite direction and slide
another wooden slat under the three raised feet.

G. Slide the boiler left or right off the skid using the two
wooden slats as runners.

H. Move boiler to its permanent location.

III. Venting
WARNING
Do not use this boiler with galvanized, Type 304 or Type 316 stainless steel, non metallic or any other
non AL29-4C® based vent systems.
Do not use a barometric damper or drafthood with this appliance.
Do not use vent dampers with this boiler.
Moisture and ice may form on surfaces around termination. To prevent deterioration, surfaces should
be in good repair (sealed, painted, etc.).
This appliance needs fresh air for safe operation and must be installed so there are provisions for
adequate combustion and ventilation air.
Read, understand and follow combustion air instruction restrictions contained in the Pre-Installation
instructions of this manual.
Do not operate appliance where gasoline or other flammable vapors or liquids, or sources of hydrocarbons (i.e. bleaches, cleaners, chemicals, sprays, paint removers, fabric softeners, etc.) are used,
stored and/or present in the air.
When installing vent pipe through chimney, no other appliance can be vented into the chimney.
Do not exceed maximum vent lengths. Refer to Table 4.

Table 1: Vent System Options
Description

Additional
Vent Kit
Required

Installation
Drawing and
Specification
(See Section)

1. Horizontal

Power Vent (air from within building) the vent pipe terminates
horizontally (through a sidewall).

2. Vertical

Power Vent (air from within building) the vent pipe terminates
vertically (through the roof).

Option

Table 2: Vent System Components Included with Boiler
Vent System Components

Part Number

Gasketed Vent Terminal 3” -Horizontal PVG-3 thru PVG-7)

8110701

Gasketed Vent Terminal 4” -Horizontal (PVG-8 & PVG 9)

8110702

Table 3: Burnham Vent System Components
Vent System Component

Equivalent
Feet of Pipe

Part Number

3” Dia. Pipe x 1 Ft

8116296U

4” Dia. Pipe x 1 Ft

100176-01

3” Dia. Pipe x 3 Ft

8116298U

4” Dia. Pipe x 3 Ft

100177-01

3” Dia. Pipe x 5 Ft

8116300U

4” Dia. Pipe x 5 Ft

100178-01

3” Dia. Pipe x Adjustable

8116319U

4” Dia. Pipe x Adjustable

100179-01

3” Dia. 90° Elbow

8116294U

4” Dia. 90° Elbow

100180-01

3” Dia. 45° Elbow

8116292U

4” Dia. 45° Elbow

100181-01

3” Dia. Horizontal Drain Tee

8116302U

4” Dia. Horizontal Drain Tee

100182-01

3” Dia. Vertical Drain Tee

8116304U

4” Dia. Vertical Drain Tee

100183-01

3” Single Wall Thimble

8116116

4” Single Wall Thimble

100184-01

3” Double Wall Thimble

8116115

4” Double Wall Thimble

100185-01

1
3
5
Equal to
Installed Length
(1.06 TO 1.64)
5
5
2
7½
-----

Table 4: Vent Length
3” Vent Pipe
(Equiv. Ft.)

4” Vent Pipe
(Equiv. Ft.)

Min.

Max.

Min.

Max.

PVG-3 & PVG-4

---

PVG-5 & PVG-6

---

PVG-7

---

PVG-8 & PVG-9

---

Model

A. Vent Guidelines Due to Removal of an Existing
Boiler

For installations not involving the replacement of an
existing boiler, proceed to Step B.
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
deficiencies 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 maximum
speed. Do not operate a summer exhaust fan. Close
fireplace dampers.
4. Place in operation the appliance being inspected.
Follow the Lighting (or Operating) Instructions.
Adjust thermostat so appliance will operate
continuously.
5. Test for spillage at the draft hood relief opening
after five (5) minutes of main burner operation. Use
the flame of a match or candle, or smoke from a
cigarette, cigar or pipe.
6. After it has been determined that each appliance
remaining connected to the common venting system
properly vents when tested as outlined above, return
doors, windows, exhaust fans, fireplace dampers and
any other gas burning appliance to their previous
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, NFPA
54/ANSI Z223.1. 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 II in the National Fuel Gas Code, NFPA 54/
ANSI Z223.1.

B. General Guidelines
1. Vent system installation must be in accordance
with National Fuel Gas Code, NFPA 54/ANSI
Z221.3 or applicable provisions of local building
codes. Contact local building or fire officials about
restrictions and installation inspection in your area.
2. Refer to the appropriate drawings in this section of
this manual to determine the proper configuration of
venting system. See Table 1.
3. This appliance requires a Special Gas Vent. The
product is designed to use Burnham supplied AL29-4C®
Stainless Steel vent system components. The following
manufacturers offer similar AL 29-4C® components
and are approved for use with this product. Heat-Fab
Inc. - Saf-T-Vent (800-772-0739); Flex-L International
Inc. - Star-34 (800-561-1980); Z-Flex U. S., Inc.
- Z-Vent (800-654-5600); and Protech Systems, Inc.FasNSeal™ (800-766-3473) or equivalent. 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 3 for complete list of Burnham
Vent System Components.
4. Horizontal vent pipe must maintain a minimum ¼
inch per foot slope away from boiler.
5. Use noncombustible 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 of vent system.
Maximum support spacing is five (5) feet. Do not
penetrate any part of the vent system with fasteners.
6. Vent length restrictions are based on equivalent
length of vent pipe (total length of straight pipe
plus equivalent length of fittings). Maximum
vent lengths are listed in Table 4. Do not exceed
maximum vent lengths. Table 3 lists equivalent
lengths for fittings. Do not include vent terminals in
equivalent feet calculations.
7. Provide and maintain vent pipe minimum clearances
to combustible materials. Vent pipe minimum
clearance to combustible material is four (4) inches
when vent is installed in a fully enclosed (chase)
application or three (3) inches when vent is installed
with at least one side open, similar to a joist bay
application. Use double wall thimble [Burnham
Part No. 8116115 (3”), 100185-01 (4”)] when
penetrating a combustible wall.
8. Do not install venting system components on
the exterior of the building except as specifically
required by these instructions. The vent termination
location is restricted as follows:

a. Minimum twelve (12) inches above grade plus
normally expected snow accumulation level, or
seven (7) feet above grade if located adjacent
to public walkway. Do not install over public
walkway where local experience indicates
appliance flue gas vapor or condensate creates a
nuisance or hazard.
b. Minimum three (3) feet above any forced air
inlet located within ten (10) feet.
c. Minimum four (4) feet below, four (4) feet
horizontally from, or four (4) feet above any
door, window, or gravity air inlet.
d. Minimum four (4) feet horizontally from electric
meters, gas meters, regulators, and relief valves.
This distance may be reduced if equipment is
protected from damage due to condensation or
vapor by enclosure, overhangs, etc.
e. Minimum twelve (12) inches from overhang or
corner of building.
9. Enclose vent passing through occupied or
unoccupied spaces above the boiler with material
having a fire resistance rating of at least equal to the
rating of the adjoining floor or ceiling. Maintain
minimum clearances to combustible materials. See
Figure 1.
Note: For one or two family dwellings, fire
resistance rating requirement may not need to be
met, but is recommended.
10. Plan venting system to avoid possible contact with
plumbing or electrical wires. Start at vent connector
on top of boiler and work towards vent terminal.
11. Once a vent pipe manufacturer and system is chosen
never mix and match vent systems.
12. If a non-standard length pipe is required:
Gasketed Vent System: The use of the adjustable
length pipe (P/N 8116319U) is recommended to
complete a non-standard 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 first
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 sufficient a standard length pipe may be cut
using the procedure outlined below for the GasketLess Vent System.

WARNING
Never exceed maximum installed length of 19¾
inches for adjustable length pipe.
Risk of flue gas leakage is possible.

NOTICE
Cut must be square with pipe and filed or
sanded smooth before joining. Carefully ensure
roundness of cut pipe by hand with gloves before
installing. Seal joint with RTV specified in this
manual.

C. Install Vent Pipe, Burnham Gasketed Vent System.
1. Procedure for Joining Burnham Gasketed Vent Pipe
and Fittings. See Figure 3.
a. Wipe the male end of each joint using an alcohol
pad to remove any dirt and grease.
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.

Figure 3: Burnham Gasketed Vent Joint Detail

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 flue
gases and/or liquid condensate will not escape.

D. Horizontal Venting System. See Figures 4, 4A and 5.
Vent Piping –
1. This boiler is supplied with components as standard
equipment for installation of the separate horizontal
venting system.
2. Do not exceed maximum vent lengths. Refer to
Table 4.
3. Recommended horizontal installation consists of
vent being sloped down ¼ inch per foot away from
boiler. See Figures 4 and 4A.

4. Use appropriate designed thimbles when passing
through combustible walls (thimble use optional for
noncombustible walls). Insert thimble through wall
from outside. Secure outside flange to wall with
nails or screws, and seal ID, OD and vent holes with
sealant material. Install inside flange to inside wall,
secure with nails or screws, and seal with sealant
material.
5. For noncombustible wall application when thimble
is not used, size opening such that bell with locking
band attached cannot pass through.
6. Join vent terminal to vent pipe. See Figure 5.
7. 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 4: Recommended Horizontal – Vent Installation

14
Figure 4A: Alternate Horizontal – Vent Installation

Figure 5: Horizontal – Vent Terminal Configuration (3” or 4” Vent)

E. Vertical Venting System - See Figures 6, 7 and 8.

NOTICE
Roof penetrations require the use of roof flashing
and storm collar - not supplied with boiler.

Vent Piping –
1. Do not exceed maximum vent lengths. Refer to
Table 4.
2. Installation of a vertical vent tee 8116304U is
required on all vertical vent applications. See
Figures 6 and 7. Attach vertical vent drain tee
directly to elbow or horizontal pipe from an elbow
immediately after vent connector.
3. Slope horizontal runs minimum ¼ inch per foot.
Slope towards 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 fire stops where vent passes through floors,
ceilings or framed walls. The fire stop must close
the opening between the vent pipe and the structure.
5. Whenever possible, install vent straight through
the roof. Refer to Figure 7 if offset is necessary.

Maintain minimum clearance to combustible
materials.
6. Install Vent Terminal.
a. Size roof opening to maintain minimum
clearance from combustible materials.
b. Extend vent pipe to maintain minimum vertical
and horizontal distance of twelve (12) inches
from roof surface. Allow additional vertical
distance for expected snow accumulation.
Provide brace as required. Refer to Figure 8.
c. Install storm collar on vent pipe immediately
above flashing. Apply Dow Corning Silastic 732
RTV Sealant between vent pipe and storm collar
to provide weathertight seal.
d. Attach vent terminal.

Figure 6: Vertical Vent Installation

Figure 7: Attic Offset

Extend Vent 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 accumulation.

Figure 8: Vertical Vent Termination

F. Optional Exterior Separate Horizontal Vent Terminal Mounting – See Figure 9.
1. Do not exceed maximum vent lengths. Refer to
Table 4.
2. This installation will allow a maximum of seven
(7) feet vertical exterior run of the vent piping to be
installed .

NOTICE
Exterior run to be included in equivalent vent
lengths.

3. Install vent piping.
a. Install vent piping for desired venting system.
Refer to specific section for details for vent pipe
installation.

b. After penetrating wall/thimble, install an
AL 29-4C® 90° elbow so that elbow leg is in the
up direction.
c. Install maximum of five (5) feet of AL 29-4C®
vent pipe. Refer to Sections C through E for
proper procedures for joining vent pipe and
fittings.
d. Install AL 29-4C® 45° elbow to upper AL 29-4C®
90° elbow so that leg of 45° is in down direction
(see Figure 9).
f. Install vent terminal.
g. Brace piping if required.

Figure 9: Horizontal Vent Terminal Installation (3” Vent [left view] or 4” Vent [right view])

IV. Water Piping and Trim
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.

A. Design and install boiler and system piping to

prevent oxygen contamination of boiler water and
frequent water additions.
1. There are many possible causes of oxygen
contamination 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
must 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
distribution system.
e. Isolating the boiler from the system water by
installing a heat exchanger.
f. Use properly designed and operating air
elimination devices in water piping.

Where
The universal location for a LWCO on both gas and oil
hot water boilers is above the boiler, in either the supply
or return piping. The minimum safe water level of a
water boiler is at the uppermost top of the boiler; that is,
it must be full of water to operate safely.

What Kind
The PVG boiler is designed to accept the wiring of the
Safgard Model 1100-H4 LWCO (P/N 100592-01). This
is a probe type LWCO. The factory wiring is designed
to allow simple “Plug-in” installation of the wiring.

How to Pipe
A “tee” is commonly used to connect the probe LWCO
to the supply or return piping, as shown below.

B. Low Water Cut Off (LWCO) on Hot Water Boilers
(Optional)

WARNING
DO NOT ATTEMPT to cut factory wires to
install an aftermarket Low Water Cut Off
(LWCO). Only use connections specifically
identified for Low Water Cut Off.

LWCO Location

Select the appropriate size tee using the LWCO
manufacturer’s instructions. Often, the branch
connection must have a minimum diameter to prevent
bridging between the probe and the tee. Also, the run
of the tee must have a minimum diameter to prevent
the end of the probe from touching or being located too
close to the inside wall of the run of the tee.

Ideally, manual shutoff valves should be located
above the LWCO and the boiler to allow for servicing.
This will allow probe removal for inspection without
draining the heating system. Many probe LWCO
manufacturers recommend an annual inspection of the
probe.

In all cases, follow the Low Water Cut Off
(LWCO) manufacturer’s instructions.

When
A low water cutoff is required to protect a hot water
boiler when any connected heat distributor (radiation)
is installed below the top of the hot water boiler (i.e.
baseboard on the same floor level as the boiler). In
addition, some jurisdictions require the use of a LWCO
with a hot water boiler.

How to Wire
Ensure power is turned off to boiler.
Locate the LWCO jumper wire in the factory wiring
harness. Remove the jumper wire and install
the LWCO wiring from LWCO Model 1100-H4
(P/N 100592-01) into the plug of the PVG factory
wiring.

How to Test
Shut off fuel supply. Lower water level until water
level is BELOW the LWCO. Generate a boiler demand
by turning up thermostat. Boiler should not attempt to
operate. Increase the water level by filling the system.
The boiler should attempt to operate once the water
level is above the LWCO.

NOTICE
Ensure the location of the LWCO in the piping will
allow for connection of the LWCO wiring harness
to the factory wiring of the PVG.

C. Connect system supply and return piping to

boiler. See Figures 11 and 12. Maintain minimum ½
inch clearance from hot water piping to combustible
materials.

WARNING
Pressure relief valve discharge piping must be
piped such that the potential of severe burns
is eliminated. DO NOT pipe in any area where
freezing could occur. DO NOT install any shut-off
valves, plugs or caps. Consult Local Codes for
proper discharge piping arrangement.

F. Space heating and domestic water heating with

Alliance™ water heater. Install Alliance water heater as
a separate heating zone. Refer to Alliance Installation,
Operating and Service Instructions for additional
information.

G. 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 10.

H. 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
flow control valves to prevent gravity circulation of
boiler water during operation of cooling system.

NOTICE
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.

D. Install circulator with flanges, gaskets and bolts

provided. Circulator harness allows circulator to be
mounted on supply or return. Connect harness to
circulator and secure any excess conduit.

E. Install supply manifold, pressure/temperature gauge

and pressure relief valve.
See Figure 10A. Pressure Relief Valve must be installed
with spindle in vertical position. Installation of the
relief valve must comply with the ASME Boiler and
Pressure Vessel Code, Section IV.

Figure 10: Recommended Piping for Combination
Heating & Cooling (Refrigeration) System

I. 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.).

Figure 10A: Supply Water Manifold Piping

Install pipe tee between circulator and boiler return
along with second tee in supply piping as shown in
Figure 11 or 12. Bypass should be same size as the
supply and return lines with valves located in bypass
and supply outlet as illustrated in Figure 11 or 12 in
order to regulate water flow to maintain higher boiler
water temperatures.
After the boiler is operational (reference Section VIII.
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.

J. 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.

K. If it is required to perform a long term pressure

test of the hydronic system, the boiler should first 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 first 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.

Figure 11: Recommended Boiler Piping For Circulator Zoned Heating Systems

24
Figure 12: Recommended Water Piping for Zone Valve Zoned Heating Systems

V. Gas Piping
Table 7 for maximum capacity of Schedule 40 pipe.
Table 8 lists equivalent pipe length for standard
fittings.

WARNING
Failure to properly pipe gas supply to boiler may
result in improper operation and damage to the
boiler or structure. Always assure gas piping is
absolutely leak free and of the proper size and
type for the connected load.
An additional gas pressure regulator may be
needed. Consult gas supplier.

4. Corrections for the specific gravity of natural gas
can be found in Table 6.
Table 6: Specific Gravity Correction Factors for

Natural Gas

A. Size gas piping. Design system to provide adequate gas
supply to boiler. Consider these factors:

Specific
Gravity

Correction
Factor

Specific
Gravity

Correction
Factor

---

0.85

0.81

---

0.90

0.82

0.60

1.00

0.78

0.65

0.96

1.10

0.74

0.70

0.93

1.20

0.71

0.75

0.90

1.30

0.68

0.80

0.87

1.40

0.66

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. Refer to the boiler’s input as
printed on its rating label. Also consider existing and
expected future gas utilization equipment (i.e. water
heater, cooking equipment).

3. Length of piping and number of fittings. Refer to

For materials or conditions other than those listed
above, refer to National Fuel Gas Code, NFPA54/ANSI
Z223.1, or size system using standard engineering
methods acceptable to authority having jurisdiction.

Table 5: Gas Ratings
Boiler
Model
Number

Natural/LP
Minimum Natural
Minimum LP
Maximum
Gas Pressure
Gas Pressure
Gas Pressure
(in. w.c.)
(in. w.c.)
(in. w.c.)
Inlet to Gas Valve Inlet to Gas Valve

Natural
Manifold
Pressure
(in. w.c.)

LP
Manifold
Pressure
(in. w.c.)

3.5

10.5

PVG-3
PVG-4
PVG-5
PVG-6

4.5

11.5

PVG-7
PVG-8
PVG-9

NOTICE
PVG boilers built for altitudes greater than 4,999 feet above sea level need to be specially orificed to adjust for
changes in atmospheric conditions. The PVG boiler “H” Model has been certified to operate in atmospheric
conditions from 5,000 to 10,000 feet above sea level. Input is derated by 10% for applications at 5,000 feet
above sea level, and 20% for applications at 10,000 feet above sea levels. Derate is based on 2% reduction
per 1000 feet.
The PVG boiler is available in two (2) altitude Models: The “S” Model 0 to 4,999 feet above sea level, and the
“H” Model 5,000 to 10,000 feet above sea level.
For applications above 10,000 feet, consult the manufacturer.

Table 7: Maximum Capacity of Schedule 40 Pipe in CFH* For Natural Gas Pressures of 0.5 psig or Less
0.3 inch w.c. Pressure Drop

0.5 inch w.c. Pressure Drop

Length
[Feet]

1¼

132

278

520

1,050

175

360

680

1,400

190

350

730

120

250

465

950

152

285

590

200

375

770

130

245

500

170

320

660

115

215

440

151

285

580

105

195

400

138

260

530

180

370

125

240

490

170

350

118

220

460

160

320

110

205

430

100

150

305

103

195

400

* 1 CFH of Natural Gas is approximately equal to 1 MBH; 1 CFH of LP is approximately equal to 2.5 MBH; contact your gas supplier for the actual heating value of your gas.

B. Connect boiler gas valve to gas supply system.

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

WARNING

3. Install sediment trap, ground-joint union and manual
shut-off valve upstream of boiler gas control valve
and outside jacket. See Figure 13.

Failure to use proper thread compounds on all
gas connectors may result in leaks of flammable
gas.

WARNING
Gas supply to boiler and system must be
absolutely shut off prior to installing or servicing
boiler gas piping.
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, NFPA 54/ANSI Z223.1.

Figure 13: Recommended Gas Piping

Table 8: Equivalent Lengths of Standard Pipe Fittings & Valves
VALVES FULLY OPEN

Pipe
Size

I.D.
Inches

Gate

Globe

Angle

Swing
Check

90°
Elbow

45°
Elbow

90° Tee, Flow
Through Run

90° Tee, Flow
Through Branch

½”

0.622

0.35

18.6

9.3

4.3

1.6

0.78

1.0

3.1

¾”

0.824

0.44

23.1

11.5

5.3

2.1

0.97

1.4

4.1

1”

1.049

0.56

29.4

14.7

6.8

2.6

1.23

1.8

5.3

1¼”

1.380

0.74

38.6

19.3

8.9

3.5

1.60

2.3

6.9

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, NFPA 70.

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.
2. Locate leaks using approved combustible gas
detector, soap and water, or similar nonflammable
solution.

DANGER
Do not use matches, candles, open flames or
other ignition source to check for leaks.

VI. 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 over-current device.
Never jump out or make inoperative any safety or operating controls.
The wiring diagrams contained in this manual are for reference purposes only. Each boiler is shipped with
a wiring diagram attached to the front door. Refer to this diagram and the wiring diagram of any controls
used with the boiler. Read, understand and follow all wiring instructions supplied with the controls.

A. General. Install wiring and electrically ground boiler

in accordance with authority having jurisdiction or, in
the absence of such requirements, follow the National
Electrical Code, NFPA 70, and/or CSA C22.1 Electrical
Code.
B. A separate electrical circuit must be run from
the main electrical service with an over-current
device/disconnect in the circuit. A service switch is
recommended and may be required by some local
jurisdictions. Install the service switch in the line
voltage “Hot” leg of the power supply. Locate the

service switch such that the boiler can be shut-off
without exposing personnel to danger in the event of
an emergency. Connect the main power supply and
ground to the three (3) boiler wires (black, white and
green) located in the junction box at the inside top of
the boiler jacket. If a low water cutoff is to be used,
connect the low water cutoff so that all 120V power
to boiler is interrupted if the low water cutoff’s switch
opens.

C. Refer to Figures 14 and 15 for details on the internal
boiler wiring.

NOTICE
This boiler is equipped with a high water temperature limit located inside the internal wiring of the boiler.
This limit provides boiler shutdown in the event the boiler water temperature exceeds the set point of the
limit control. Certain Local Codes require an additional water temperature limit. In addition, certain types
of systems may operate at temperatures below the minimum set point of the limit contained in the boiler.
If this occurs, install an additional water temperature limit (Honeywell L4006 Aquastat) located in the system
piping as shown in the Water Piping and Trim Section of this manual. Wire as indicated in the Electrical
Section of this manual.

NOTICE
All wire, wire nuts, controls etc. are installer supplied unless otherwise noted.

Figure 14: Internal Boiler Wiring Schematic Diagram

NOTICE
If an additional system limit is used, install in series with the auxiliary limit jumper shown in the drawing
below.

Figure 15: Internal Boiler Wiring Ladder Diagram

D. 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 except for Hydro-Air Systems.
5. Single Zone Heating System – Refer to Figure 16 of this manual for the electrical diagram for this type of system.

Set the thermostat heat anticipator to 0.60 amps.

6. Single Zone Heating System with Alliance™ Water Heater - Refer to Figure 17 of this manual for the electrical diagram
for this type of system.

Set the thermostat heat anticipator to 0.60 amps.

7. Conventional Circulator Zoned System – Refer to Figure 18 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.

Connect the thermostat of each zone and the circulator for that zone to R8888 panel. If an Alliance™ indirect water
heater is used, connect the Alliance™ thermostat and circulator to the Zone 1 terminals of the R8888.

Set the thermostat heat anticipator to 0.12 amps.

NOTICE
The Honeywell R8888 Control is available in a three (3) zone Model (R8888A) and a four (4) zone Model
(R8888B). Up to four (4) R8888’s may be used together to provide control for up to twelve (12) individual
zones. Only one (1) zone, the first zone of the main control, will provide priority circulation. If more than
four (4) zones are required, connect additional R8888’s by wiring the A, B, and C terminals of each control
together. Each R8888 requires a 120 volt power supply. If more than one (1) R8888 is used, set the panel
type switch to “main” on the first R8888 and set the panel type switch to “expansion” on the second, third
or fourth R8888.
8. Conventional Zone Valve Zoned System – Refer to Figure 19. Wiring to the most popular models of zone valves is given
in Figure 20.

Connect the thermostat of each zone and the zone valve for that zone to the R8889 control. If an Alliance™ indirect water
heater is used, connect the Alliance™ thermostat and zone valve to the “zone 1” terminals of the R8889.

Set the thermostat heat anticipator to 0.12 amps.

NOTICE
The Honeywell R8889 Control is available in two three (3) zone models and two four (4) zone models.
Burnham recommends using Model R8889A for three (3) zone systems and Model R8889B for four (4) zone
systems. Models R8889C and R8889D have less load capacity and may not operate with certain types of
zone valves. Up to four (4) R8889’s may be used together to provide up to sixteen (16) individual zones.
Only one (1) zone, the first zone of the main control will provide priority zoning for the Alliance indirect
water heater. If more than four (4) zones are required, connect additional R8889’s by wiring the A, B and
C terminals of each control together. Each R8889 requires a 120 volt power supply. If more than one (1)
R8889 is used, set the panel type switch to “main” on the first R8889 and set the panel type switch to
“expansion” on the second, third or fourth R8889.

32
Figure 16: Single Heating Zone Only Wiring Schematic

NOTICE

Figure 17: Single Zone System with Packaged Alliance™ Water Heater Wiring Schematic

If an additional system limit is used, install in series with the auxiliary limit jumper shown in the drawing
below.

34
Figure 18: Circulator Zoned System Wiring Schematic

Figure 19: Zone Valve Zoned System Wiring Schematic

Figure 20: Different Manufacturer’s Zone Valve Connections to Honeywell R8889

VII. Modular Installation
A. General Guidelines
1. Read and follow all venting, combustion air,
water piping, gas piping and electrical instructions
contained in this manual unless otherwise instructed
in this section.

E. Gas Piping
1. Refer to National Fuel Gas Code, Local Codes and
Tables 7 and 8 for gas pipe sizing.
Table 9: Modular Boiler Water Manifold Sizing

2. Consult Local Building Codes or National Fuel Gas
Code, NFPA 54/ANSI Z222.3 for restrictions and
instructions on modular boiler installations.

B. Module Sizing

Burnham recommends sizing each boiler in a modular
system to provide 20 % of the combined heating load
where ever possible.

C. Venting
1. Each boiler must have an individual vent pipe.
Refer to Venting Section of this manual for venting
guidelines and options.

Combined Output
(MBH)

Recommended Minimum
Common Water Manifold
Size (NPT)

< 166

1¼”

< 260

1½”

< 550

2”

< 900

2½”

< 2000

3”

2. Each boiler must be piped as shown in Figure 13.

WARNING

Do not manifold vent pipes together.

If gas pressure in the building is above ½ psig,
an additional gas pressure regulator is required.
Using one additional regulator for multiple
boilers may result in unsafe boiler operation.
The additional regulator must be able to properly
regulate gas pressure at the input of the smallest
boiler. If the regulator cannot do this, two or
more additional regulators are required. Consult
regulator manufacturer and/or local gas supplier
for instructions and equipment ratings.

2. The maximum vent length for each boiler is fifty
(50) equivalent feet.
3. The minimum horizontal distance between vent
terminations is one (1) foot. Additional horizontal
distance is desirable to avoid frost damage to the
building. Vent terminations must be at least twelve
(12) inches above the ground plus the expected
snow accumulation.

CAUTION
Installing multiple vent terminations close
together promotes frost buildup on buildings.
To minimize this possibility, extend the distance
from the building to the end of the vent
termination and increase the horizontal distance
between terminations.
4. Multiple vertical vent pipes may be piped through
a common conduit or chase so that one roof
penetration may be made. Each vent termination
must be one (1) foot from other terminations.

D. Water Piping (See Table 9 and Figure 21)

F. Electrical
1. Each boiler must be provided with a fused
disconnect and service switch.
2. Install wiring in accordance with requirements of
authority having jurisdiction. In the absence of such
requirements, follow the National Electric Code,
NFPA 70 and/or CSA C22.1 Electric Code.

G. Modular Boiler Control Systems

Contact a controls manufacturer such as Honeywell or
Tekmar to properly apply a modular control system.

Common systems may use outdoor temperature, return
water temperature or both to stage the boilers.

Installing a low water cutoff in the system piping of
modular systems is strongly recommended and may be
required by Local Codes.

38
Figure 21: Modular Boiler Piping

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

B. Verify that the venting, water piping, gas piping and
electrical system are installed properly. Refer to
installation instructions contained in this manual.

C. Confirm all electrical, water and gas supplies are
turned off at the source and that vent is clear of
obstructions.

D. Confirm that all manual shut-off gas valves between
the boiler and gas source are closed.

WARNING
Completely read, understand and follow all
instructions in this manual before attempting
start up.

E. Fill entire heating system with water and vent air

from system. Use the following procedure on a Series
Loop or multi-zoned system installed as per Figure 11
or 12 to remove air from system when filling.

WARNING
The maximum operating pressure of this boiler
is 30 psig. Never exceed this pressure. Do not
plug or change pressure relief valve.

4. Starting with one circuit at a time, open zone valve
or shut-off valve in system supply and return piping.
5. Open hose bib.
6. Open fill valve (Make-up water line should be
located directly after full port ball valve in system
supply piping between air scoop and expansion
tank).
7. Allow water to overflow from bucket until discharge
from hose is bubble free for 30 seconds.
8. Close the opened zone valve or shut-off valve for
the zone being purged of air, then open the zone
valve or shut-off valve for the next zone to be
purged. Repeat this step until all zones have been
purged. At completion, open all zone valves or
shut-off valves.
9. Close hose bib, continue filling the system until the
pressure gauge reads 12 psi. Close fill valve.
(Note - If make-up water line is equipped with
pressure reducing valve, system will automatically
fill to 12 psi. Follow fill valve manufacturer’s
instructions).
10. Open isolation valve in boiler supply piping.
11. Remove hose from hose bib.

F. Confirm that the boiler and system have no water
leaks.

G. Prepare to check operation.
1. Obtain gas heating value (in Btu per cubic foot)
from gas supplier.

NOTICE

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

If it is required to perform a long term pressure
test of the hydronic system, the boiler should
first 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 first 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.

3. Temporarily turn off all other gas-fired appliances.

1. Close full port ball valve in boiler supply piping.
2. Isolate all zones by closing zone valves or shut-off
valves in supply and return of each zone(s).
3. Attach a hose to the vertical hose bib located prior to
the full port ball valve in the system supply piping.
(Note - Terminate hose in five gallon bucket at a
suitable floor drain or outdoor area).

4. Turn on gas supply to the boiler gas piping.
5. Confirm that the supply pressure to the gas valve is
14 in. w.c. or less. Refer to Table 5 for minimum
supply pressure.
6. Open the field installed manual gas shut-off valve
located upstream of the gas valve on the boiler.
7. Using soap solution, or similar non-combustible
solution, electronic leak detector or other approved
method. Check that boiler gas piping valves, and
all other components are leak free. Eliminate any
leaks.

DANGER
Do not use matches, candles, open flames or
other ignition source to check for leaks.
8. Purge gas line of air.

Figure 22: Operating Instructions

H. Operating Instructions
1. Follow Operating Instructions to place boiler in
operation. See Figure 22.
2. Electronic Ignition Modules with LED indicators.
Table 10 cross-references the ignition module
terminal designations to the ignition terminal

Figure 23: LED Locations

numbers in the wiring ladder diagrams. The yellow
LED indicates the status of the flame, see Table 11.
The green LED indicates the status of the system,
see Table 12. See Figure 23 for LED locations. See
Figure 24 for Troubleshooting Guide.
Table 10: Ignition Module Terminal

Cross-Reference

Ignition Module
Terminal Designation

Wiring Ladder Diagram
Terminal Number

MV/PV

GND

24V (GND)

24V

SPARK

TABLE 11: Yellow LED Flame Codes

Yellow LED
Flash Codea

Indicates

Recommended Service Action

Heartbeat

Normal Flame Signal

N/A

OFF
a

Weak Flame Signal System will operate reliably but flame signal is
less than desired.
Perform routine maintenance to
assure optimum flame signal.
Note: This indication may flash temporarily
during or shortly after lightoff on some applications.
Marginal Flame Signal (less than 1.1 µA) System may not operate reliably over time.
Check gas supply, pilot burner, flame
Service call recommended.
sense wiring, contamination of flame
Note: This indication may flash temporarily
rod, burner ground connection.
during or shortly after lightoff on some applications.
No Flame or Flame Signal Below minimum threshold for system operaN/A
tion.

Flash Code Descriptions
- Heartbeat: Constant ½ second bright, ½ second dim cycles.
- The flash code number signifies that the LED flashes X times at 2Hz, remains off for two
seconds, and then repeats sequence.

Table 12: Green LED Status Codes

Green LED
Flash Code
(X + Y)a

Next System Action

Recommended Service Action

No “Call for Heat”

N/A

None

Flash Fast

Startup - Flame sense
calibration

N/A

None

Heartbeat

Normal operation

N/A

None

OFF

5 minute Retry DelayPilot flame not detected
during trial for ignition

Initiate new trial for ignition after retry
delay completed.

If system fails to light on next trial
for ignition check gas supply, pilot
burner, spark and flame sense wiring, flame rod contamination or out
of position, burner ground connection.

Recycle- Flame failed
during run

Initiate new trial for ignition. Flash
code will remain through the ignition
trial until flame is proved.

If system fails to light on next trial
for ignition check gas supply, pilot
burner, flame sense wiring, flame
rod contamination, burner ground
connection.

Flame sensed out of
sequence

If situation self corrects within 10
seconds, control returns to normal
sequence. If flame out of sequence remains longer than 10 seconds, control
goes to Flash code 6+4 (see below)

Check for pilot flame. Replace gas
valve if pilot flame present. If no
pilot flame, cycle “Call for Heat.” If
error repeats, replace control.

Flame sense leakage to
ground

Check flame sense lead wire for
Control remains in wait mode. When
damage or shorting. Check that
the fault corrects, control resumes nor- flame rod is in proper position.
mal operation after a one minute delay. Check flame rod ceramic for cracks,
damage or tracking.

Control remains in wait mode. When
Low secondary voltage
the fault corrects, control resumes norsupply- (below 15.5 Vac)
mal operation after one minute delay.

Check transformer and AC line for
proper input voltage to the control.
Check with full system load on the
transformer.

6+2

5 minute Retry DelayOn every third retry on
same “Call for Heat”

Initiate new trial for ignition after retry
delay completed.

Check gas supply, pilot burner, spark
and flame sense wiring, flame rod
contamination or out of position,
burner ground connection.

6+3

On every 6th flame
failure during run on the
same “Call for Heat”

5 minute retry delay, then initiate new
trial for ignition.

Check gas supply, pilot burner, flame
sense wiring, contamination of flame
rod, burner ground connection.

6+4

Flame sensed out of
sequence- longer than
10 seconds

Control waits until flame is no longer
sensed and then goes to soft lockout.
Flash code continues. Control auto
resets from soft lockout after one hour.

Check for pilot flame. Replace gas
valve if pilot flame present. If no
pilot flame, cycle “Call for Heat.” If
error repeats, replace control.

Soft lockout due to error
detected during self
check sequences

Control auto resets from soft lockout
after one hour.

Reset by cycling “Call for Heat.” If
error repeats, replace the control

ON
a

Indicates

Flash Code Descriptions:
- Flash Fast: rapid blinking
- Heartbeat: Constant ½ second bright, ½ second dim cycles.
- A single flash code number signifies that the LED flashes X times at 2Hz, remains off for two seconds, and then
repeats the sequence.
- X + Y flash codes signify that the LED flashes X times at 2Hz, remains off for two seconds, flashes Y times at 2
Hz, remains off for three seconds, and then repeats the sequence.

Honeywell Electronic Ignition Troubleshooting Guide

Figure 24: Troubleshooting Guide

Figure 26: 1 Inch Main Burner flame

Figure 27: Pilot Burner Flame

L. Check thermostat operation. Raise and lower

temperature setting to start and stop boiler operation.

M. Check ignition control module shut-off. Disconnect
pilot lead wires from gas valve. If burners do not
shutdown, determine cause of malfunction. Replace
necessary items and check operation.

N. Check low water cutoff (if so equipped).
1. Adjust thermostat to highest setting.
Figure 25: Sequence of Operation

I. Sequence of Operation. See Figure 25. If boiler fails

to operate properly, see Troubleshooting Tree in Section
IX: Service.

J. Check pilot burner flame. See Figure 27. Flame

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

K. Check main burner flame. See Figures 26. Flame
44

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

2. With boiler operating, open drain valve and slowly
drain boiler.
3. Main burners and pilot burner will extinguish and
blower will stop when water level drops below low
water cutoff probe. Verify limit, thermostat or other
controls have not shut off boiler.
4. Adjust thermostat to lowest setting. Refill boiler.

O. Check 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 should stop.
3. Adjust limit to setting above observed temperature.
Ignition sequence should begin.
4. Adjust thermostat to lowest setting. Adjust limit to
desired setting.

P. Adjust gas input rate to boiler.
1. Adjust thermostat to highest setting.
2. Check manifold gas pressure. See Table 5 or 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 in Table 5 or boiler’s rating label, contact
gas supplier for assistance.

ii. Remove gas orifices. Drill one (1) drill size
larger (drill size is stamped on orifice, or see
Section X: Repair Parts).
iii. Reinstall gas orifices and main burners.
Measure input rate.
6. Recheck Main Burner Flame.
7. Return other gas-fired appliances to previous
conditions of use.

Q. Review User’s Information Manual and system
operation with owner or operator.

Table 13: Gas Flow Rate in Cubic Feet

Per Hour
Seconds
for One
Revolution

One-Half
Cu. Ft.

One
Cu. Ft.

Two
Cu. Ft.

120

240

113

225

WARNING

106

212

Failure to properly adjust gas input rate will result
in over firing or under firing of the appliance.
Improper and unsafe boiler operation may result.

100

200

189

180

172

4. Determine Input Rate. Multiply gas flow rate by gas
heating value.

164

157

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

150

a. Boiler must not be over fired. Reduce input rate
by decreasing manifold pressure. Do not reduce
more than 0.3 inch w.c. If boiler is still overfired,
contact your Burnham distributor or Regional
Office for replacement Gas Orifice.
b. Increase input rate if less than 98% of rating
plate input. Increase manifold gas pressure no
more than 0.3 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.

144

138

133

129

124

120

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

Size of Gas Meter Dial

IX. Service
DANGER
This boiler uses flammable gas, high voltage electricity, moving parts, and very hot water under high
pressure. Assure that all gas and electric power supplies are off and that the water temperature is cool
before attempting any disassembly or service.
Do not attempt any service work if gas is present in the air in the vicinity of the boiler. Never modify,
remove or tamper with any control device.

WARNING
This boiler must only be serviced and repaired by skilled and experienced service technicians.
If any controls are replaced, they must be replaced with identical models.
Read, understand and follow all the instructions and warnings contained in all the sections of this
manual.
If any electrical wires are disconnected during service, clearly label the wires and assure that the wires
are reconnected properly.
Never jump out or bypass any safety or operating control or component of this boiler.
Read, understand and follow all the instructions and warnings contained in ALL of the component
instruction manuals.
Assure that all safety and operating controls and components are operating properly before placing
the boiler back in 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.

B. Low water cutoff (if so equipped).

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
field. Complete replacement mechanisms, including
necessary gaskets and installation instructions, are
available from the manufacturer.

C. Vent System. Inspect for obstructions, soot

accumulation, proper support, and deterioration of pipe,
fittings, 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 five (5) foot
intervals and must not sag.
5. All vent joints must be secure and watertight.
6. All joints must be secure and airtight. Horizontal
vent tee drain or vertical vent tee drain (if used)
must have minimum 6 inch trap and allow
condensate to flow freely. To Clean:
a. Disconnect drain tube from drain fitting.
b. Flush drain tube with water. Fill trap with water.
c. Securely fasten drain tube to drain fitting,
providing gas-tight and watertight seal.
7. If pipe must be disassembled for removal of
obstructions or resealing of joint, see Section III,
Paragraph C.

D. Boiler Flue Passages. Inspect for blockage or soot
accumulation.

1. Remove Main Burners. See Figure 30.
a. Remove front door.
b. Disconnect pilot tubing and pilot lead wires at
the gas valve.
c. Remove wires to Flame Roll-out Switch.
d. Remove Burner Access Panel.

e. Mark location of Main Burner with Pilot Bracket
on gas manifold.
f. Hold Main Burner on throat. Lift front of
burners to clear orifice. Burner which holds
pilot can be removed by lifting the burner
adjacent to its right first.
2. Disconnect Vent Connector and Vent Pipe from
Blower Outlet.
3. Remove Jacket Top Panel.
4. Disconnect the Black and Gray Silicone Tubing
from the Canopy.
5. Disconnect Wiring Harness from Blower Motor.
6. Remove Canopy/Blower Assembly.
a. Loosen the (4) screws from Canopy.
7. Remove Flue Gas Baffles. Inspect Flue Gas Baffles
for deterioration.
8. Inspect flue passages. Clean with flue brush. See
Figure 30.
9. Inspect heating surface in combustion chamber.
Clean with straight handle wire brush.
10. Install Flue Gas Baffles.
11. Replace Canopy Assembly and seal.
12. Connect Silicone Tubing between Pressure Fittings
on Canopy Assembly and Pressure Switch. Route
through bushings in Vestibule Panel . See Figure
28.
13. Install Jacket Top Rear Panel.
14. Connect vent system. See Figure 29.
15. Connect Blower Motor Wiring Harness

Figure 29: Blower Vent Connector Assembly

E. Main Burners and Firebox.
1. Vacuum firebox. Exercise care - do not damage base
insulation.
2. Clean main burners. Brush top of burners with soft
bristle brush. See Figure 30. Vacuum to remove any
dirt and lint.
3. Vacuum tip of pilot burner.
4. Check gas orifices for lint and dirt. Clean as
necessary.
5. Install main burners by reversing procedure to
remove burners.
a. Pilot burner must be installed in original
location. See Table 14.
b. Main burners must be properly secured in burner
tray slot at rear of firebox and over gas orifice.
See Figure 30.
c. Pilot gas supply and pilot lead wires must be
reconnected.
d. Burner access panel must be securely in place.
e. Reconnect Flame Roll-out wires.

F. Check operation. Follow steps G through P from
Section VIII: System Start-up.

G. Procedure for measuring differential pressure (See
Figure 31).

1. With boiler off, remove Gray and Black Hoses at
differential pressure switch.
2. With tees and ¼ inch aluminum stubs, connect water
manometer as shown with additional tubing.
Figure 28: Silicone Tubing Assembly

48
Figure 30: Flue and Burner Cleanout, 1” Burner

Table 14: Pilot Burner Location
Boiler Model

Main Burner with Pilot Bracket

Pilot Burner Located Between Main Burners *

PVG-3

2&3

PVG-4

3&4

PVG-5

4&5

PVG-6

5&6

PVG-7

6&7

PVG-8

7&8

PVG-9

8&9

* Main burners numbered left to right as viewed from front of boiler.

3. Start boiler and read Pressure on Manometer
when boiler water temperature reaches operating
temperature. Refer to Table 15 for minimum
readings.

NOTE: If switch drops-out before boiler reaches
temperature or if pressure differential readings are
below minimums shown in Table 15, check for
cracks in hose or contact your nearest Burnham
representative.

4. Stop boiler, remove manometer and reconnect hoses
to differential pressure switch. See Figures 28 and
31.

Figure 31: Differential Pressure Measurement

Table 15: Differential Pressure Switch Settings
Boiler Model

Minimum Differential Pressure
Sea Level to 4,999 Ft.

5,000 - 10,000 Ft. Elevation

PVG-3

1.32” w.c.

.80” w.c.

PVG-4

1.17” w.c.

.65” w.c.

PVG-5

1.17” w.c.

.65” w.c.

PVG-6

.88” w.c.

.35” w.c.

PVG-7

.80” w.c.

.30” w.c.

PVG-8

.88” w.c.

.35” w.c.

PVG-9

.88” w.c.

.35” w.c.

XI. Repair Parts
All PVG 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
(717) 481-8400 or Fax (717) 481-8408.

Key
No.

[Quantity] Part Number

Description

PVG-3

PVG-4

PVG-5

PVG-6

PVG-7

PVG-8

PVG-9

61707031

61707041

61707051

61707061

61707071

61707081

61707091

[5]
71707003

[6]
71707003

[7]
71707003

1. CASTING ASSEMBLY
1

Section Assembly

Left End Section

Center Section

Right End Section

Slip Nipple, #3

[4]
806600009

[6]
806600009

[8]
806600009

[10]
806600009

[12]
806600009

[14]
806600009

[16]
806600009

Flue Gas Baffle

[2]
71107002

[3]
71107002

[4]
71107002

[5]
71107002

[6]
71107002

[7]
71107002

[8]
71107002

Tie Rod, ¼” -20

[2]
100109-01

[2]
100108-05

[2]
100108-07

[2]
100108-13

[2]
100108-14

[2]
100108-15

[2]
100108-16

Hex Nut, ¼” -20

71707001
[1]
71707003

[2]
71707003

[3]
71707003

[4]
71707003
71707002

[4] 80860407

Key
No.

Description

[Quantity] Part Number
PVG-3

PVG-4

PVG-5

PVG-6

PVG-7

PVG-8

PVG-9

2. BASE ASSEMBLY
2A

Base Wrapper

71807031

71807041

71807051

71807061

71807071

71807081

71807091

Base Tray

71807032

71807042

71807052

71807062

71807072

71807082

71807092

Burner Tray Assembly

61807031

61807041

61807051

61807061

61807071

61807081

61807091

Base Front Panel

71807035

71807045

71807055

71807065

71807075

71807085

71807095

Burner Access Panel

71807036

71807046

71807056

71807066

71807076

71807086

71807096

Cerafelt Gasket 1/2” x 2”

6206002

Cerafelt Gasket 1/2” x 2”

6206002

Base Side Insulation

Base Rear Insulation

72007031

72007041

72007051

72007061

72007071

72007081

72007091

Base Front Insulation

72007032

72007042

72007052

72007062

72007072

72007082

72007092

Base Leg Assembly

Self Tapping Screw, 1/4” -20 x 1/2”

Flame Roll-out Switch

80160044

Sheet Metal Screw, #8 x 3/4”

80860030

Self Tapping Screw, 10-32 x 3/8”

Self Tapping Screw Hex Cap,
5/16 - 18 x 1-1/4”

[2] 72007001

[4] 6186001
[18] 80860700

[5] 80860705

[6] 80860705

[7] 80860705

[4] 80860717

Key
No.

Description

[Quantity] Part Number
PVG-3

PVG-4

PVG-5

PVG-6

PVG-7

PVG-8

PVG-9

3. BASE ASSEMBLY
3A

Burner Cover (Natural Gas Only)

Manifold Support Bracket

Sheet Metal Screw, #8 x 1/2”

[2] 80860000

Self Tapping Screw, 10-32 x 3/8”

[6] 80860705

102033-03 102033-04 102033-05 102033-06 102033-07 102033-08 102033-09
718070001

Key
No.

Description

[Quantity] Part Number
PVG-3

PVG-4

PVG-5

PVG-6

PVG-7

PVG-8

PVG-9

Canopy Assembly - Sea Level

61107031

61107041

61107051

61107061

61107071

61107081

61107091

Canopy Assembly - High Altitude

61107032

61107042

61107052

61107062

61107072

61107082

61107092

4. FAN/CANOPY ASSEMBLY
4A
4B

Cerafelt

9206005

U-Clip

[4] 80861512

Sheet Metal Screw, #10 x 1”

[4] 808600141

Fan Gasket

8206085

Fan

81161512

Lock Washer, #10

[4] 80860636

Machine Screw, #10-24 x 2-1/2”

[4] 808608982

Key
No.

Description

[Quantity] Part Number
PVG-3

PVG-4

PVG-5

PVG-6

PVG-7

PVG-8

PVG-9

5. BURNER ASSEMBLY

Gas Valve (Natural Gas),
Honeywell VR8204P1171

81660282

N/A

Gas Valve (Natural Gas),
Honeywell VR8304P4496

N/A

81660283

Gas Valve (LP Gas),
Honeywell VR8204C3015

81660146

N/A

Gas Valve (LP Gas),
Honeywell VR8304P4280

N/A

81660181

Nipple, ½” NPT x Close

806600040

N/A

Nipple, ¾” NPT x Close

N/A

806600022

Union, ½” NPT

806604023

N/A

Union, ¾” NPT

N/A

806604001

½” Gas Manifold

82207031

82207041

82207051

82207061

---

¾” Gas Manifold

---

82207071

82207081

82207091

Burner Orifices - Natural Gas #47

[4]
822710

[6]
822710

[8]
822710

[10]
822710

[12]
822710

[14]
822710

[16]
822710

Burner Orifices - LP Gas 1.20 mm

[4]
822792

[6]
822792

[8]
822792

[10]
822792

[12]
822792

[14]
822792

[16]
822792

Pilot Assembly - Natural Gas

8236163

Pilot Assembly - LP Gas

8236164

Pilot Burner

100147-01

Main Burner

[3]
[5]
[7]
[9]
[11]
[13]
[15]
100146-01 100146-01 100146-01 100146-01 100146-01 100146-01 100146-01

Pilot Tubing

8236122

Self Tapping Screw, ¼ - 20 x ½”

[6] 80860700

Key
No.

Description

[Quantity] Part Number
PVG-3

PVG-4

PVG-5

PVG-6

PVG-7

PVG-8

PVG-9

6. CONTROL PANEL ASSEMBLY
6A

Limit, Honeywell L4080D

100189-01

Transformer/Relay, Honeywell
R8285D

80160155U

Ignition Module, Honeywell
S8670E3003

100959-01

Blower Relay, Honeywell
R8222U1006

80160096U

6E
6F

Differential Pressure Switch
Sea Level 0’ - 4999’

80160762

80160761

80160760

80160759

80160760

High Altitude - 5000’ - 10,000’

80160759

80160763

80160764

80160765

80160764

Junction box

8136259

Key
No.

Description

[Quantity] Part Number
PVG-3

PVG-4

PVG-5

PVG-6

PVG-7

PVG-8

PVG-9

7. JACKET PARTS
7A

Left Side Panel

60407002

Right Side Panel

60407001

Rear Panel

60407033

60407043

60407053

60407063

60407073

60407083

60407093

Vestibule Panel

60407034

60407044

60407054

60407064

60407074

60407084

60407094

Top Panel

60407032

60407042

60407052

60407062

60407072

60407082

60407092

Front Door

101354-03 101354-04 101354-05 101354-06 101354-07 101354-08 101354-09

Jacket Cover Plate

80407001

Handle

8056184

Door Clip

[2] 7041921

Bushing

8136048

Burnham Logo

81460099

Key
No.

Description

[Quantity] Part Number
PVG-3

PVG-4

PVG-5

PVG-6

PVG-7

PVG-8

PVG-9

8. MISCELLANEOUS PARTS CARTON
8A

Water Manifold

80607001

Temperature/Pressure Gauge

8056169

Circulator Wiring Harness

6130701

Safety Relief Valve

81660363

Boiler Drain Valve

806603061

Vent Terminal

8110701

8110702

Vent Connector

8110703

8110704

Important Product Safety Information
Refractory Ceramic Fiber Product
Warning:
The Repair Parts list designates parts that contain refractory ceramic fibers
(RCF). RCF has been classified as a possible human carcinogen. When
exposed to temperatures about 1805°F, such as during direct flame contact,
RCF changes into crystalline silica, a known carcinogen. When disturbed as a
result of servicing or repair, these substances become airborne and, if inhaled,
may be hazardous to your health.

AVOID Breathing Fiber Particulates and Dust
Precautionary Measures:
Do not remove or replace RCF parts 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 fitting 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 airtight plastic bag. RCF
and crystalline silica are not classified as hazardous wastes in the United
States and Canada.

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 difficulty develops: Leave the area and move to a location
with clean fresh air. Seek immediate medical attention if breathing
difficulties persist.
Ingestion: Do not induce vomiting. Drink plenty of water. Seek
immediate medical attention.

Limited Warranty
FOR RESIDENTIAL CAST IRON WATER BOILERS
Subject to the terms and conditions set forth below, U.S. Boiler™
Co., Inc. Lancaster, Pennsylvania hereby extends the following limited
warranties to the original owner of a residential grade water boiler
manufactured and shipped on or after July 1,1991:

ONE YEAR LIMITED WARRANTY
ON RESIDENTIAL GRADE WATER BOILERS
U.S. Boiler Co., Inc. warrants to the original owner that its residential
grade water boilers comply 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.

LIFETIME LIMITED WARRANTY ON HEAT EXCHANGER
U.S. Boiler Co., Inc. warrants to the original owner that the heat
exchanger of its residential grade water boilers 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 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 heat exchanger.
The service charge applicable to a heat exchanger warranty claim is
based upon the number of years the heat exchanger has been in service
and will be determined as a percentage of the retail price of the heat
exchanger model involved at the time the warranty claim is made as
follows:
Years
In Servi ce
Servi ce Charge
as % of
Retai l Pri ce
Years
In Servi ce
Servi ce Charge
as % of
Retai l Pri ce

1-10

No
Charge

25 and
above

NOTE: If the 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 heat exchanger last
appeared or the current retail price of the then nearest equivalent heat
exchanger.

ADDITIONAL TERMS AND CONDITIONS
1. Applicability: The limited warranties set forth above are extended
only to the original owner at the original place of installation within the
United States and Canada. These warranties are applicable only to
water boilers designated as residential grade by U.S. Boiler Co., Inc. and
installed in a single or two-family residence and do not apply to steam
boilers of any kind or to commercial grade boilers.
2. Components Manufactured by Others: Upon expiration of the
one year limited warranty on residential grade water boilers, 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.
3. Proper Installation: The warranties extended by U.S. Boiler Co., Inc.
are conditioned upon the installation of the residential grade water boiler
in 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. conditioned upon the use of the residential grade water boiler

for its intended purposes and its maintenance accordance with U. S.
Boiler Co., Inc. recommendations and hydronics industry standards.
These warranties will be inapplicable if the residential grade water boiler
is used or 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. 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. liability under these
warranties shall under no circumstances exceed the purchase price paid
by the owner for the residential grade water boiler 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
residential grade water boiler 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 heat exchanger in a residential
grade water boiler shall extend to the original
owner for the lifetime of the original owner at the
original place of installation. Some states do no 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 U.S. Boiler Co., Inc., Burnham Hydronics, at P.O. Box 3079,
Lancaster, PA 17604, giving full particulars in support of the 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 U.S.
Boiler Co., Inc. at the above address for inspection or repair. In addition,
the owner agrees to make all reasonable efforts to settle any disagreement arising in connection 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.

03/03

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Burnham Pvg Users Manual

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