Burnham 20-PV-I User Manual

INSTALLATION, OPERATING

AND

SERVICE INSTRUCTIONS

SERIES 2PV

GAS BOILER

Price - $3.00

For service or repairs to boiler, call your heating contractor. When seeking information on boiler, provide
Boiler Model Number and Serial Number as shown on Rating Label.

Boiler Model Number

20_ PV_I- _ _ _ _

Heating Contractor Phone Number

Address

8141775R9-11/99

Boiler Serial Number

6 _ _ _ _ _ _ _

1

Installation Date

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.

CAUTION

DANGER

Indicates an imminently hazardous situation
which, if not avoide d, will result in death,
ser i ous i nj ur y or sub s t anti a l prope rty dam a ge.

Indicates a potentially hazardous situation
w hic h, if n o t avo id ed , m ay re sult in
mod erate o r m inor injury or property
damage.

WARNING

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

T able of Contents

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

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

III. Water Piping ......................................... 6

IV. Gas Piping ............................................ 8

V. Venting ................................................. 9

VI. Electrical ............................................. 12

VII. System Start-up .................................. 13

NO TI CE

Indicates spec ial ins tructions on
installation, operation, or maintenance
which are important but not related to
personal injury hazards.

VIII. Service Instructions ............................ 20

IX. Repair Parts ........................................ 23

2

NOTICE

USA boilers built for installation at altitudes greater than 2,000 feet above sea level have been
specially orificed to reduce gas input rate 4 percent per 1,000 feet above sea level per the National
Fuel Gas Code, NFPA 54/ANSI Z223.1, Section 8.1.2 and Appendix F. Canadian boilers’ orifice
sizing is indicated on th e rating label. High altitude b oiler models are identifiable by the second
digit in the model number suffix on the rating label:

20_PV_I-__2: Less than 2000 ft. elevation
20_PV_I-__4: 2000 ft. and high er elevation, C anada
20_P V_I-__5: 2000 ft. and higher elevation , USA

Figure 1: Elevation Views

Boiler Model

Dimensions [in inches]

ABCD

203PV 20‰ 14‰ 10-1/16 15-5/8 3.2 265
204PV 23 17 11 15-5/8 4 309
205PV 27 21 13‰ 15… 4.7 357
206PV 30… 24… 15-1/8 15… 5.5 419

Water Content

[Gallons]

Approx. Shippin g

3

Weight (lb.)

I. Pre-Installation

WARNING

Carefully read all instructions before installing
boiler. Failure to follow all instructions in proper
order can cause personal injury or death.

A. Inspect shipment carefully for any signs of damage.

All equipment is carefully manufactured, inspected and
packed. Our responsibility ceases upon delivery of
boiler to carrier in good condition. Any claim for
damage or shortage in shipment must be filed
immediately against carrier by consignee. No claims
for variances or shortages will be allowed by Boiler
Manufacturer, unless presented within sixty (60) days
after receipt of equipment.

B. Installation must conform to the requirements of the

authority having jurisdiction. In the absence of such
requirements, installation must conform to National
Fuel Gas Code, NFPA 54/ANSI Z223.1, and/or CAN/
CGA B149 Installation Codes. Where required by the
authority having jurisdiction, the installation must
conform to the Standard for Controls and Safety
Devices for Automatically Fired Boilers, ANSI/ASME
CSD-1.

C. Appliance is design certified for installation on

combustible flooring. The boiler must not be installed
on carpeting.

D. Provide clearance between boiler jacket and

combustible material in accordance with local fire
ordinance. See Figure 2 for minimum clearance from
combustible material for closet installation. For alcove
installation provide top clearance of 27 inches and
right side clearance of 6 inches. Recommended service
clearance is 24 inches from left side, right side and
front. Service clearances may be reduced to minimum
clearances to combustible materials.

E. 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.

F. Install near outside wall for through wall venting.

Refer to Section V: Venting. Certified for minimum
vent length of 2 feet with one (1) elbow and maximum
vent length of 15 feet with one (1) or two (2) elbows.

WARNING

Certified as Category III appliance. Install vent
system in accordance with Section V: Venting.
Do not vent using masonry chimney, Type B gas
vent, or other Category I venting system.

Figure 2: Minimum Clearances to Combustible

Construction for Closet Installation

G. Protect gas ignition system components from water

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

H. Provide combustion and ventilation air in

accordance with applicable provisions of local building
codes, or National Fuel Gas Code, NFPA 54/ANSI
Z223.1, Section 5.3, Air for Combustion and
Ventilation, or Sections 7.2, 7.3 or 7.4 of CAN/CGA
B149 Installation Codes.

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.

4

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 sole 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 12 inches of top of space. Locate
remaining opening within 12 inches of bottom of
space. Minimum dimension of air opening is 3
inches. Size each opening per following:

a. Direct communication with outdoors. Minimum

free area of 1 square inch per 4,000 Btu per hour
input of all equipment in space.

b. Vertical ducts. Minimum free area of 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 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 space(s) of
sufficient volume such that combined volume of all
spaces meet criteria for unconfined space. Size each
opening for minimum free area of 1 square inch per
1,000 Btu per hour input of all equipment in
spaces, but not less than 100 square inches.

7. 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.

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.

I. 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.

II. Unpack Boiler

CAUTION

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

A. Move boiler to approximate installed position.

B. Remove all crate fasteners.

C. Lift outside container and remove with all other inside

protective spacers and bracing. 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 one side and slide a wooden slat

under the two raised feet.

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

wooden slat under the two raised feet.

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

the two wooden slats as runners.

H. Move boiler to its permanent location.

5

III. Water Piping and Trim

CAUTION

Failure to properly pipe boiler may result in
improper operation and damage to boiler or
building.

A. Design and install boiler and system piping to prevent

oxygen contamination of boiler water.

CAUTION

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.

Oxygen contamination sources are system leaks
requiring addition of makeup water, fittings, and oxygen
permeable materials in distribution system. Eliminate
oxygen contamination by repairing system leaks,
repairing fittings, and using nonpermeable materials in
distribution system.

B. Connect system supply and return piping to boiler. See

Figure 3. Also consult I=B=R Installation and Piping
Guides. Maintain minimum ½ inch clearance from hot
water piping to combustible materials.

C. Install Circulator with flanges, gaskets and bolts

provided. Five foot circulator harness allows circulator
to be mounted on supply or return. Connect harness to

circulator and secure any excess conduit.

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 4.
Also consult I=B=R Installation and Piping Guides.

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.

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.).

Install pipe tee between circulator and boiler return along
with second tee in supply piping as shown in Figure 5.
Bypass should be same size as the supply and return lines
with valves located in bypass and supply outlet as
illustrated in Figure 5 in order to regulate water flow 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.

D. Install Safety Relief Valve. See Figure 3. Safety Relief

Valve must be installed with spindle in vertical position.
Installation of the relief valve must be consistant with
the ANSI/ASME Boiler and Pressure Vessel Code,
Section IV.

WARNING

Safety relief valve discharge piping must be
piped near floor to eliminate potential of severe
burns. Do not pipe in any area where freezing
could occur. Do not install any shut-off valves.

E. Install Drain Valve in ¾" NPT connection in tee

provided. See Figure 1.

J. A hot water boiler installed above radiation level must be

provided with a low water cutoff device as part of
installation.

K. 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 flushed. A qualified water treatment chemical
specialist should be consulted for recommendations
regarding appropriate chemical compounds and
concentrations which are compatible with local
environmental regulations.

L. 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.

6

Figure 3: Recommended Boiler Piping For Series - Loop Hot Water Heating Systems

Figure 4: Recommended Piping for Combination

Heating & Cooling (Refrigeration) Systems

Figure 5: Recommended Bypass Piping

7

IV. 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 listed on
rating label.

2. Maximum gas demand. Table 1 lists boiler input
rate. Also consider existing and expected future gas
utilization equipment (i.e. water heater, cooking
equipment).

Table 1: Rated Input

Boiler

Model

Number

203PV 62 24 ‰
204PV 96 38‰ ‰
205PV 130 52 ‰
206PV 164 65 ‰

Natural Gas LP/Propane

Input Rate

[cubic feet per hour]

Gas

Connection

Size

3. Install sediment trap, ground-joint union and
manual shut-off valve upstream of boiler gas
control valve and outside jacket. See Figure 6.

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/NFPA 70 and/or CSA C22
Electrical Code.

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. Do not use matches, candles, open flames,
or other ignition source.

3. Length of piping and number of fittings. Refer to
Table 2 for maximum capacity of Schedule 40 pipe.
Table 3 lists equivalent pipe length for standard
fittings.

4. Specific gravity of gas. Gas piping systems for gas
with a specific gravity of 0.70 or less can be sized
directly from Table 2, unless authority having
jurisdiction specifies a gravity factor be applied. For
specific gravity greater than 0.70, apply gravity
factor from Table 4. If exact specific 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, NFPA 54/ANSI Z223.1 and/or
CAN/CGA B149 Installation Codes.

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

Figure 6: Recommended Gas Piping

8

Table 2: Maximum Capacity of Schedule 40 Pipe in CFH For Gas Pressures of 0.5 psig or Less

Length

[Feet]

10 132 278 520 1,050 175 360 680 1,400
20 92 190 350 730 120 250 465 950
30 73 152 285 590 97 200 375 770
40 63 130 245 500 82 170 320 660
50 56 115 215 440 73 151 285 580
60 50 105 195 400 66 138 260 530
70 46 96 180 370 61 125 240 490
80 43 90 170 350 57 118 220 460
90 40 84 160 320 53 110 205 430

100 38 79 150 305 50 103 195 400

0.3 inch w.c. Pressure Drop 0.5 inch w.c. Pressure Drop

‰ 1 1… ‰ 1 1…

Table 3: Fitting Equivalent Lengths Table 4: Specific Gravity Correction Factors

Fitting

Nominal Pipe Size

Specific

Gravity

Correction

Factor

Specific

Gravity

Correction

Factor

‰ 1 1…

45 Ell 0.7 1 1.2 1.6
90 Ell 1.6 2.1 2.6 3.5

Tee (As Elbow) 3.1 4.1 5.2 6.9

0.50 1.10 1.30 1.07

0.55 1.04 1.40 1.04

0.60 1.00 1.50 1.00

0.65 0.96 1.6 0.97

0.7 0.93 1.7 0.94

0.75 0.9

0.8 0.87

V. Venting

A. General Guidelines.

1. Vent system installation must be in accordance with
National Fuel Gas Code, NFPA 54/ANSI Z221.3,
Part 7, Venting of Equipment; and/or CAN/CGA
B149 Installation Codes, Section 7, Venting
Systems and Air Supply for Appliances; or
applicable provisions of local building codes.
Contact local building or fire officials about
restrictions and installation inspection in your area.

2. This appliance requires a Special Gas Vent. Use
Vent Connector and Vent Terminal in Vent
Accessory Carton provided with boiler (See Repair
Parts, Key No. 8). The product is designed to use
Burnham supplied AL 29-4C® 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, 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 5 for complete list of Burnham
Vent System Components.

WARNING

Do not use this appliance with nonmetallic vent
systems such as Hart & Cooley Ultravent, Plexco
Plexvent, or Selkirk-Metalbestos Sel-Vent.

9

Table 5: Burnham Vent System Components

Burn ham

Vent System

Component

*Car to ned

Part

Numbe r

3" Dia. Pipe x 1 Ft 61160112 8116135
3" Dia. Pipe x 3 Ft 61160101 8116058
3" Dia. Pipe x 4 Ft ** 8116176
3" Dia. Pipe x 5 Ft 61160111 8116059

3" Dia. 90 E lbow 61160121 8116060
3" Dia. 45 E lbow 61160131 8116061

Com plete with Locking Band(s)

*

61160 33 Contains (4) 4 ft. lengths

* *

6116040 Contains (2) 4 ft. lengths

Burn ham

Component

Part

Numbe r

3. Minimum vent length requirement is 2 feet of pipe
and one (1) elbow. Maximum vent length is 15 feet
with one (1) or two (2) elbows.

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

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:

(a) Seal any unused openings in the common venting

system.

(b) Visually inspect the venting system for proper size

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

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

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

(d) Place in operation the appliance being inspected.

Follow the Lighting (or Operating) Instructions.
Adjust thermostat so appliance will operate

continuously.

(e) Test for spillage at the drafthood relief opening

after 5 minutes of main burner operation. Use the
flame of a match or candle, or smoke from a
cigarette, cigar or pipe.

(f) After it has been determined that each appliance

remaining connected to the common venting system
properly vents when tested as outlined above, return
doors, windows, exhaust fans, fireplace dampers
and any other gas burning appliance to their
previous conditions of use.

(g) 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.

C. Install Vent Connector.

1. Remove vent connector from vent accessory carton.

2. Remove gaskets, orifice plate and hardware from
blower outlet flange.

3. Assemble orifice plate gaskets, orifice plate, and
vent connector. See Figure 7.

4. Secure vent connector with washers and locknuts.

Figure 7: Vent Connector Installation

10

D. Install Vent Pipe, General.

1. Start at vent connector. Work toward vent terminal.

2. Use ¾ inch pipe strap to support horizontal runs,
maintain vent location and slope, and prevent sags.
Do not restrict thermal expansion movement.
Maximum support spacing is 5 feet.

3. Provide minimum 5 inch clearance to combustible
materials. Use thimble when penetrating
combustible wall.

a. 203PV and 204PV - Single wall thimble,

Burnham Part No. 8116116. Other wall thimble
manufacturers are American Metal Products,
Hart & Cooley, and Metal Fab.

b. 205PV and 206PV - Double wall thimble,

Burnham Part No. 8116115 (accomodates 5" to
8¾" wall thickness). Another wall thimble
manufacturer is Hart & Cooley.

4. Cut pipe to length using hacksaw with minimum 32
teeth per inch or circular saw with metal abrasive
wheel. Remove bead end only - bell end accepts
next fitting or pipe. Cut must be square with pipe.
Scrape off burrs with sharp edged tool.

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 walkway
where local experience indicates condensate or
vapor from Category III appliances creates a
nuisance or hazard.

Figure 8: Typical Joint Detail

Note: If remaining pipe (less bell) must be used,
beaded end of mating pipe/fitting must be crimped.

5. Seal all joints using Dow Corning Silastic 732
RTV, Dow Corning Silastic 736 RTV, Polybac
#500 RTV, or Sil-bond RTV 4500 (Acetoxy). Do
not use other adhesives or sealants.

6. Procedure for joining pipe and fittings. See Figure 8.

a. Clean pipe or fitting. Remove all dirt and grease.

b. Slip locking band over pipe/fitting bell.

c. Apply continuous ¼ inch bead of sealant around

bead end of pipe/fitting no more than 1/8 inch
from end.

d. Insert pipe/fitting into bell. Smooth sealant for

continuous seal around gap between bead and
bell. Apply additional sealant if necessary.

e. Slip locking band over joint and tighten. Do not

secure joint with sheet metal screws or pop rivets.

E. Horizontal (Through Wall) Vent Installation.

1. Maintain minimum ¼ inch per foot slope in
horizontal runs. Slope pipe down toward vent
terminal.

CAUTION

Moisture and ice may form on surfaces around
vent terminal. To prevent deterioration, surfaces
should be in good repair (sealed, painted etc.)

b. Minimum 3 feet above any forced air inlet

located within 10 feet.

c. Minimum 4 foot below, 4 foot horizontally

from, or 1 foot above any door, window, or
gravity air inlet.

d. Minimum 4 feet horizontally from, and in no

case above or below, unless a 4-foot horizontal
distance is maintained, from electric meters, gas
meters, regulators and relief equipment.

e. Minimum 12 inches from overhang or corner.

3. Use wall thimble when passing through
combustible outside wall (thimble use optional for
noncombustible wall). Insert thimble through wall
from outside. Secure outside flange to wall with
nails or screws, and seal with adhesive material.
Install inside flange to inside wall, secure with nails
or screws, and seal with adhesive material.

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

5. Join vent terminal to vent pipe. Cut vent pipe to
locate vent terminal 3 inches (minimum) and 6
inches (recommended) from wall when joined to
inside vent piping. See Figure 9. Vent terminal
clearance to vinyl wall surfaces is 6 inches.

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.

11

VI. Electrical

Figure 9: Recommendations for Thimble and Wall Penetration

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 floor. Do not install on outside wall, near
fireplace, or where influenced by drafts or restricted air
flow, hot or cold water pipes, lighting fixtures,
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. Run wires through grommet in
Jacket Left Side Panel. Set thermostat heat anticipator
to 0.6 amps. See Figure 10.

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

than 12 amperes. Provide individual branch circuit with
fused disconnect. Connect to black and white wires and

green ground screw. See Figure 10.

E. Alliance water heater (if used). See Figure 10. Also refer

to Alliance Installation, Operating and Service

Instructions.

1. Zoning with Circulators, Domestic Hot Water
Priority. Provide DPDT relay (included with PAL).
Connect coil to Alliance thermostat (prewired with
PAL). Connect normally open contacts (red and
white wires in PAL control harness) to transformer
terminals 'R' and 'Y'. Disconnect yellow circulator
wire. Connect normally closed contacts (violet
wires in PAL boiler harness) to yellow relay wire
and yellow circulator wire.

2. Zoning with Circulators, Nonpriority. Connect
Alliance circulator zone control (or red and white
wires in PAL control harness) to transformer
terminals 'R' and 'Y'.

3. Zoning with Zone Valves. Connect Alliance
thermostat to zone valve. Connect zone valve end
switch to relay terminals 'R' and 'G'. See Paragraph
F.

F. For installations using zone valves provide separate

transformer for zone valve wiring. Consult zone valve
manufacturer for assistance.

12

VII. System Start-up

Figure 10: Wiring Diagram

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. Fill heating system with water and vent air from

system. Use the following procedure on a Series Loop
System equipped with zone valves. See Figure 3.

1. Close isolation valve in boiler supply piping.

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

3. Attach hose to bib cock located just below isolation
valve in boiler supply piping. Terminate hose in
five gallon bucket at a suitable floor drain or
outdoor area).

4. Starting with one circuit, open zone valve.

5. Open bib cock.

6. Open fill valve. Makeup water line should be
located directly above isolation valve in boiler
supply piping.

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

9. Close bib cock, continue filling system until
pressure gauge reads 12 psi. Close fill valve.

Note: If makeup water line is equipped with
pressure reducing valve, system will automatically
fill to 12 psi. Leave globe valve open.

10.Open isolation valve in boiler supply piping.

11.Remove hose from bib cock.

C. Check main burners. See Figure 11. Rear of burner

must be in vertical slot in rear of burner tray. Front of
burner must be seated on orifice.

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

13

Figure 11: Main Burner Installation

Figure 12: Gas Valve Pressure Tap

D. Prepare to check operation.

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

2. Connect manometer to pressure tap on gas valve.
See Figure 12.

3. For natural gas fired boiler, temporarily turn off all
other gas-fired appliances.

E. Follow Operating Instructions to place boiler in

operation. See Figure 17.

F. Sequence of Operation. See Figure 14. If boiler fails

to operate properly, see Troubleshooting Tree on pages
17-18.

G. Check gas piping and connections between Gas

Valve and Manifold, Orifices and Pilot Tubing. Use
soap solution or other approved method. See Figure 13.

H. Check pilot burner flame. See Figure 15. Flame

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

I. Check main burner flame. See Figure 16. Flame

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

Figure 13: Schematic Pilot and Gas Piping Figure 15: Pilot Burner Flame

14

Figure 14: Sequence of Operation

Table 6: Gas Flow Rate in Cubic Feet per Hour

Figure 16: Main Burner Flame

J. Check thermostat operation. Raise and lower

temperature setting to start and stop boiler operation.

K. Check ignition control module shut-off. Disconnect

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

L. Check low water cutoff (if used). Drain boiler water

below LWCO set point. Burners should extinguish.

M. Check limit.

1. Adjust thermostat to highest setting.

Seconds

for One

Revolution

30 60 120 240
32 56 113 225
34 53 106 212
36 50 100 200
38 47 95 189
40 45 90 180
42 43 86 172
44 41 82 164
46 39 78 157
48 37 75 150
50 36 72 144
52 35 69 138
54 33 67 133
56 32 64 129
58 31 62 124
60 30 60 120

One-Half

Size of Gas Meter Dial

Cu. Ft.

Cu. Ft.

One

Two

Cu. Ft.

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.

N. Adjust gas input rate to boiler (Natural Gas).

1. Adjust thermostat to highest setting.

2. Check manifold gas pressure. Manifold pressure is
listed on rating label. Adjust gas valve pressure
regulator as necessary (turn adjustment screw
counterclockwise to decrease manifold pressure, or
clockwise to increase manifold pressure). If
pressure can not be attained, check gas valve inlet
pressure. If less than minimum gas supply pressure
listed on rating label, contact gas supplier for
assistance.

3. Clock gas meter for at least 30 seconds. Use Table 6
to determine gas flow rate in Cubic Feet per Hour.

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

a. Boiler must not be overfired. 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

label 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 VIII: Service.

ii. Remove gas orifices. Drill one (1) drill size

larger (drill size is stamped on orifice, or
see Key No. 4D).

iii. Reinstall gas orifices and main burners.

Measure input rate.

6. Recheck Main Burner Flame.

7. Adjust thermostat to normal setting.

8. Return other gas-fired appliances to previous
conditions of use.

O. Adjust gas input rate to boiler (LP/Propane).

1. Adjust thermostat to highest setting.

5. Compare measured input rate to input rate listed on
rating label.

2. Check manifold pressure. Adjust gas valve pressure
regulator to obtain 10 inches w.c. manifold

15

Figure 17: Operating Instructions

pressure. Adjust gas valve pressure regulator as
necessary (turn adjustment screw counterclockwise
to decrease manifold pressure, or clockwise to
increase manifold pressure). If pressure can not be
attained, check gas valve inlet pressure. If less than
minimum gas supply pressure listed on rating label,
contact gas supplier for assistance.

3. Recheck Main Burner Flame

4. Adjust thermostat to normal setting.

P. COMBUSTION CHAMBER BURN-OFF

1. The mineral wool combustion chamber panels
contain a cornstarch based binder that must be
burned out at installation to prevent odors during

subsequent boiler operation.

2. Ventilate the boiler room, set the high limit to its
maximum setting, set the thermostat to call for
heat. Allow the boiler to fire for at least an hour or
until the odor from the cornstarch has dissipated.

3. Return the high limit and thermostat to their
desired settings.

Q. Review User's Information Manual and system

operation with owner or operator.

R. Post instructions near boiler for reference by owner

and service personnel. Maintain instructions in legible
condition.

16

171819

VIII. 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 17.

CAUTION

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

B. Inspect Housekeeping. Boiler area must be clear and

free from combustible materials, gasoline and other
flammable vapors and liquids. Remove obstructions to
the flow of combustion and ventilation air.

C. Service Low water cutoff (if so equipped). Follow

instructions provided with low water cutoff

D. Inspect Vent System for obstructions in vent pipe,

soot accumulation, deterioration of pipe or joints, and
proper support:

1. Remove vent connector and vent pipe. See Figure

19.

2. Remove all obstructions. Check and clean vent
terminal screens.

5. Using flashlight, examine all flue passageways.

a. If passageways are free of soot and obstruction,

replace canopy, secure and seal using kit
available from Burnham Distributors, Part No.

6111716.

b. If passageways need cleaning, remove burners

as described in Paragraph F below. Using long
handle wire or bristle flue brush and vacuum,
brush flueways thoroughly from top of boiler as
illustrated in Figure 19. Replace canopy and seal
using kit available from Burnham Distributors,
Part No. 6111716.

WARNING

Canopy must be resealed with RTV-732 Silicone
Rubber Sealant (500 F Intermittent Duty).

6. Reinstall jacket top panel, vent pipe and vent
connector in reverse manner. Reconnect electrical
connector to blower.

F. Clean Main Burners and Firebox.

1. To remove burners for cleaning, changing orifice
plugs, or repairs:

a. Remove jacket Front Panel.

b. Disconnect pilot tubing at gas valve.

3. Remove soot accumulations with wire brush and
vacuum.

4. Replace deteriorated parts.

5. Repair deteriorated joints. See Section V: Venting,
Paragraph D.6.

E. Inspect Boiler Flue Passages for blockage or soot

accumulation. See Figure 19.

1. Disconnect vent connector from blower discharge
flange.

2. Remove sheet metal screws securing Jacket Top
Panel. Lift panel and rotate about relief valve
piping until top of boiler is exposed. If piping or
wall prevent full rotation of top panel for access to
canopy, cut slot into relief valve opening and
remove top panel.

3. Disconnect blower connection from wiring harness
in vestibule.

4. Remove bolts securing canopy to boiler sections.
Cut silastic sealant around base of canopy, pry
canopy from boiler sections and remove canopy/
blower assembly from boiler.

c. Disconnect igniter/sensor cable and ground wire

at Ignition Module.

d. Disconnect Flame Rollout Switch wires.

e. Remove Burner Access Panel.

f. Mark Pilot Main Burner location on Manifold.

g. Hold burner on throat. Lift slightly to clear

orifice. Pull burner from combustion chamber.
See Figure 11. Pilot Main Burner can only be
removed by lifting at 45° angle after adjacent
burner to right is removed.

2. Brush top of burners with a soft bristle brush. See
Figure 19. Vacuum burners.

3. Check orifices. Drilled passageways must be free of
lint or dirt.

4. Vacuum tip of Pilot Burner.

5. Clean firebox by vacuuming. Exercise care not to
disturb insulation inside base.

6. Install burners by reversing procedure used to
remove burners. Burner with pilot assembly must
be in same location as original installation. See
Table 7. Burners must be properly located on

20

Table 7: Pilot Burner Location

Boiler

Model

203PV 1 1 & 2
204PV 2 2 & 3
205PV 3 3 & 4
206PV 4 4 & 5

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

Main Burner with

60 Pilot Bracket *

Pilot Burner Located

Between Main Burners

*

support bracket at rear of burner. See Figure

11. Slide burner over orifice.

7. Reconnect pilot gas supply, igniter/sensor
cable, and ground wire. Reinstall Burner
Access Panel. Reconnect Flame Rollout
Switch wires.

G. Check operation. Follow steps D through O

from Section VII: System Start-up.

H. Removal or replacement of pilot assembly or

pilot assembly parts. If pilot assembly, sensor
or pilot orifice need replacing, remove main
burner with pilot using procedure described in
Paragraph F.1.

Figure 18: Spark Gap Setting

1. To replace orifice.

a. Disconnect pilot tubing. Pilot orifices

screw into Pilot Burner. Replace with
Honeywell 388146NE (Natural Gas) or
Honeywell 388146KP (LP/Propane).

b. Reconnect pilot tubing and check for

leaks.

2. To adjust or check spark gap between
electrode and hood on Honeywell Q348A
intermittent pilot. See Figure 18.

a. Use round wire gauge to check spark

gap.

b. Spark gap should be 1/8 inch for

optimum performance.

3. To replace complete pilot assembly.

a. Remove two machine screws holding

pilot burner to pilot bracket.

b. Disconnect pilot tubing.

c. Disconnect all other leads to pilot.

d. Select pilot assembly with identical

model number, reconnect leads and pilot
tubing. Resecure to pilot bracket.

4. Reinstall main burner following procedure
described in Paragraph F.

Figure 19: Flueway Cleaning

21

Table 8: Minimum Suction Pressure

Boiler Model Minimum Suction Pressure

203PV -0.50 inches w.c.
204PV -0.50 inches w.c.
205PV -0.80 inches w.c.
206PV -0.80 inches w.c.

I. Lubrication. There are no parts requiring lubrication

by service technician or owner. Circulator bearings are
water lubricated. Blower motor bearings are factory
sealed.

Figure 20: Procedure for Measuring Fan Suction

Pressure

22

IX. Repair Parts

All Series 2PV 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 your Burnham Regional Sales Office as listed below.

Burnham Corporation Regional Offices

A. B urnham Corporation - Centr al & Western Regions

P.O. Box 3079
La ncaster, PA 17604 -3079
Phone: [phone]
FAX: [phone]

B. B urnham Sales Cor poration - Northeast Region

19 -27 Mystic Avenue
Somerville, MA 02145
Phone: [phone]
FAX: [phone]

C. Burnham Corporation - Metropolitan Region

P.O. Box 3079
Lancas ter, PA 17604-3079
Phone: [phone]
FAX: [phone]

D. Burnham Co rporation - Mid-Atlantic Region

P.O. Box 3079
La ncaster, PA 17604 -3079
Phone: [phone]
FAX: [phone]

Contact Regional Office Indicated for your S tate

Alabama A Nebraska A Oregon A
Alaska A Neva da A Pennsyl vania D
Arizona A New Hampshire B Rhode Isla nd B
Arkansas A New J ersey South Car oli na A
Californ ia
Colora do A
Connecticut B
Delawar e D

A

Atlan tic, Burlin gton, Camd en,
Ca pe May, C umbe rland,
Glou cester, Mercer,
Monmouth, O cean, Salem

South Dak ota A
Tenness ee A

D

Te xas A

Utah A
Florida A
Georgia A
Hawaii A New Mexico A
Ida ho A Ne w York
Illinois A
Indiana A
Iowa A
Kansas A
Kentuc ky A
Loui sia na A North Caroli na A West Virgin ia D
Maine B No rth Dakot a A Wiscons in A
Mar yland D Ohio Wy oming A
Massachusetts B
Mic h iga n A
Minnesot a A
Mississippi A
Missouri A

Co un ties
All other Co unties

Albany, Fulton , M ontgomery,
Re nss ela er, S ara to ga, Princ e Wil liam Count ies
Sch enect ady, Schohar ie, All other C o unties
Warren, Washington Counties
All O t her C o un ties

Athens, Belmont, Gallia,
Jef fe rson, Lawr ence, Meig s,
Monro e, an d Was hing ton
Co un ties
All other Co unties

Verm ont B

CVirginia

Arlington,Ac co mack,Cl arke,
Fairfax,Fr ederic k,Fauq uier,
Loudoun , Northampto n a nd

B

Washington A

C Washington, D.C. D

D

A

D

A

Montana A Oklahoma A Canada A

23

1. Section Assembly ............................... 25

2. Canopy/Blower Assembly .................. 25

3. Base Assembly Group ........................ 26

4. Manifold and Main Burners ............... 27

5. Pilot Burner and Gas Valve ............... 28

6. Jacket .................................................. 29

7. Miscellaneous Trim and Controls ...... 31

8. Vent Accessory Carton ....................... 31

SERVICE SCHEDULE

DATE SERVICE PERFORMED

24

Key
No.

[Quantity] Part Number

Description

20 3P V 204PV 205PV 206PV

1. Sectio n Assembly

617170321 617170421 617170521 617 170621

2. Canopy /Blower As s emb ly

2A Cano py [1] 61117034 [1] 61117044 [1] 61117054 [1] 61117064
2B Carriage Bolt, …-2 0 x 1" [2] C ommon Hardwa re
2C Washer, …, SA E [10] Common Hardware
2D Nut,…- 20, H eavy Hex [2] Common Hardwa re
2E Blower Mou nting G asket [Included in Key No. 2F] [1] 8 206048 [1] 8206049

2F Blo wer [1] 61 11714 [1] 61 11715
2G Orifice Plate Gasket [(2) Included in Key No. 2F] [2] 8206042 [2] 8206035
2H O rifice Plate [1] 71117035 [1] 71117045 [1] 71117055 [1] 71117065

2J Pressure Fitting, Dwy er A308 [1] 822657
2K Hex Nut, 1/4-20, Brass [(4) Inc luded in Key No. 2F] [4] 80860424

2L Hex Locknut, …- 20 [4] Common Hardware

2M Flue B affle No t Applic able

25

Key

No.

Description

203PV 204PV 205PV 206PV

[Q ua n tit y] Pa r t Nu mb e r

3. Base Asse mb l y Grou p

3 Base A ssem bly, Complet e [1] 6186 00391 [1 ] 618600 491 [1] 61 8 60059 1 [ 1] 61 8 60069 1
3A Base T ray As semb ly [1] 718 6 00391 [ 1] 718600 491 [1] 71 8 60059 1 [ 1] 71 8 60069 1
3B Base Wrapper [1] 7186 00311 [1] 718600411 [1] 7186 00511 [1] 7186 00611

3B1 Base End Insulation [2] 720601
3B2 Base Rear Insulation [1] 72 060035 [ 1] 72 060045 [1] 72 060055 [1] 72 060065

3C Base Fr ont Panel Assembly [1] 618 600341 [1] 618 600441 [1] 618600541 [ 1] 618 600641
3D Bur ner Tray [1] 71 8 60030 5 [1] 718 6 00405 [1] 718 600 505 [1] 718 6 00605

3E Base Leg Assembly [4] 6 186001

3E1 Base Leg [4] 71860021
3E2 Nylon Glide 8 186006

3F Bu rner Ac ces s P anel [1] 718600 361 [1 ] 71860046 1 [1] 7186 00561 [1] 718 6 00661

3G Jacket Attachme nt Bracket, Le ft [1] 704 60011
3H Jacket Attachment Bracket, Right [1] 70 460012

Cerafelt Gasket, ‰" x 2"

3J

Johns-Mans ville CR F- 400

[1] 6 206002

Screw, S elf-Ta pping Type F, Phill ips Pan

3K

Head, …-20 x ‰", Plat ed

3L Sc rew, Self Tapping, 5/16- 18 x 1 …" [4] 80860717

3M Washer, 5/16, USS [4] Common Hardwa re
3N Washer, Lock, USS [4] Common Hardwa re

3P Nut, Hex, 5/16-18, Brass [4] 80860403

3R Sc rew, Sheet M etal, Phillips H ead, #8 x ‰" [2] Common Hardware

[20] 80 860700

26

[Quant ity] Part Number

K ey N o. Descr ip tion

203PV 204PV 205PV 206PV

4. Manifold and Main Burners

4A Main Burner [2] 8 236099 [4] 8236099 [6] 8 236099 [8] 8236099
4B Mai n Bur ner wit h 60 Pilot Brac ket [1] 82 36098
4C Manifold [1] 82 260033 [1] 82 260043 [1] 82 260053 [1] 82 260063

4D (Natural

Ga s O n ly)

4D

(L P/Pr op a n e

Only)

4E Scr ew, Machine, #1 0-32 x 3/16" [2] 80 860800

4F

Main Burner Orifice, #44, Orange [3] 822712 ----- ----- ----­M ain B urner Orific e, # 45, Pi nk ----- [5] 8 227 11 [7] 82 2711 [9] 8 22711

Main Burner Orifice, #55, Green [3] 822708 ----- ----- ----­Main Burner Orifice, 1.25mm , Purple ----- [5] 822705 [7] 822705 [9] 822705

Screw, S elf-Ta pping Type F, Phill ips Pan
Head, 1/4-20 x 1/2", Plated

[4] 80 860700

27

Key

No.

Des crip tion

203PV 204PV 205PV 206PV

[Q ua n tit y] Pa rt Nu mb e r

5. Pilot Burner and Gas Valve

Pilo t A s semb ly, N atural G a s, Ho ney we ll Q34 8A 133 3 [1] 8236104

5A

Pilot Ass embly, LP Gas, Ho neywell Q 34 8A1341 [1] 8236107
Pilo t Or ifice , N atural Ga s Ho neywe ll 38814 6NE

5B

Pilot Orifice, LP/Propane Honeywell 388146KP
5C Co mpressio n Nut/Fi tting , 1/8" OD x … NP T Included with Key No.5A and 5E
5D Pilot Tubing, 1/8" OD x 30" [1] 8236110

Gas Valve, ‰ x ‰, Natural Ga s, Honeywe ll VR82 04C600 0 [1] 81 660176
5E

Gas Valve, ‰ x ‰, LP/Pr opane, Ho neywell V R8204C 6018 [1] 81660180
5F Igniter/Sensor Cable, 36", Honeywell 394800-36 [1] 8236084

5G G round W ire Assembly [1] 6 136054

Included with Key No.5A

28

Key

No.

Description

203PV 204PV 205PV 206PV

[Quant ity] Part Number

6. Jacket

6A Jacket Wrap- A-Rou nd Panel ( 1) [ 1] 60 4 17031 2 [1] 60417041 2 [1] 604 1 70512 [1] 60 4 17061 2
6B Jacket Uppe r Ves tibule Panel ( 1) [1] 6 041 703 221 [1] 6041 70422 1 [1] 6041705 221 [1] 6 041 706 221
6C Jacket Lo wer Ves tibule P ane l [1] 604170322 2 [1] 6041 70422 2 [1] 6041705 222 [1] 6 041 706 222
6D Jack et Top Panel (1) ( 2) [1] 60 4 17033 4 [1] 604170 434 [1] 604 1 70534 [1] 60 4 17063 4
6E Jacket F r ont Remov able Door [1] 604 1 70344 [1] 60 4 17044 4 [1] 604 1 70544 [1] 60 4 17064 4
6F J ack et Low er Front P an el [1] 604 1 70313 [1] 60 4 17041 3 [1] 604 1 70513 [1] 60 4 17061 3
6G Screw, Sheet M etal, #8 x ‰" [20] Common Hardware
6H Snap Bushing, Heyco SB-1093-15 [2] 8136257

6J S nap B ushing, Heyco SB -2000-26 [1] 8136266
6K Snap Bushing, Heyc o S B-437-5 [1] 8136048
6L B urnham Logo Plate [1] 81460107

(1) F or boilers installed in Canada, indicate ’For Canada’ when ordering.
(2) Fo r bo ilers ins tall ed in Calif ornia, in dicat e ’F or California’ when ordering.

29

30

Key No. Description

[Quantity] Part Number

203PV 204PV 205PV 206PV

7. Miscellaneous Trim a nd Controls

Safety Relief Valve, 30 ps i, NPT,

7A

Conbraco 10-408-05

7B Limit, Honeywell L40 80D1036 [1] 80 1601 56

7B1 Im mersion Well, ‰ NPT Includ ed with 7B

7B2

7B3 Limit Hone ywell L4080B1212 (Dual Limit O nly) [1] 80 160474

7C1 Relay, D PST, Honeywell R82 22U1006 [1] 80 160096U
7C2 Junction Box, 4" x 4" x 1‰" [1] 8136259

7D1 Flame Rollout Switch Bracket [1] 7 186018

Immersion Well, NPT, Honeyw ell 1238 70A
(Dual Limit O nly)

7C Transformer /Relay, Honeywell R82 85 D5001 [1] 80 160155U

7D Flame Rollout S witch [ 1] 80 1600 44

7E Suction Pressure S witch [1] 80160180 [1] 80 1601 81

Silicone Tubing, 1/8" x 11"

[1] 81 6603 19

[1] 80 1604 26

7E1

7H1

7 J1 Screw, Cap Hex Head, 7/16- 14 x 1‰" [4] Common Hardware
7J2 Nut, Hex, 7 /16-14 [4] Common Hardware

Silicone Tubing, 1 /8" x 12‰"

9016001 (Specify L ength)

Silicone Tubing, 1 /8" x 13-5 /8"

Silicone Tubing, 1 /8" x 15…"
7F Ignition Module, Honeywell S8670E1 007 [1] 80160108
7G Temperature-Pressure G auge [1] 8 056164U

Circulator with Gaskets, Bell & G osset t NFR-22 [1] 8056174

Circulator with G as kets, Grun dfos UP 15-42F [1] 8056173
7H

Circulator with Ga skets , Tac o 007F [1] 8 056170

Circulator with G as kets, Taco 0010 [1] 8 056176

Gasket, B ell & Goss ett N FR-22 ( SLC-30) [2] 806 6 02029

Gasket, Grundfos 510179 [2] 806602016

Ga ske t , Ta co ’00’ Series [2] 806602006

7J Flange, 1 … NPT [2] 806 6 02013

7K Dr ain Valve, NP T, Conbr aco 31-606-02 [1] 8066 03011

[Quantity] Part Number

Key No. Description

203PV 204PV 205PV 206PV

8. Vent Accesso ry Carton

8A Vent Connec tor [1] 8116102 [ 1] 8116103
8B Vent Terminal [1] 8116063
8C Locking B and [1] 8116101

Silicone Se alant, 3 oz . tube, Dow

8D

Corning Silastic 732 RTV, or Sil-Bond
RTV 4500 (Acetoxy )

611170322 611170522

[1] 8056052

31

32