Crown Boiler 32 Series and User manual

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D ESIGNEDTOL EAD
Tel: [phone] • Fax: [phone] • www.crownboiler.com
Manufacturer of Hydronic Heating Products
P.O. Box 14818 3633 I. Street
Philadelphia, PA 19134
Series 32
Gas-Fired Natural Draft Steam or Water Boilers
INSTALLATION AND OPERATING INSTRUCTIONS
These instructions must be affixed on or adjacent to the boiler.
WARNING: Improper installation,
adjustment, alteration, service or
maintenance can cause property
damage, injury, or loss of life. For
assistanceoradditionalinformation,
consult a qualified installer, service
agency or the gas supplier. Read
these instructions carefully before
installing.

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Table of Contents
I. Product Description 1
II. Specifications 2
III. Before Installing 7
IV. Locating the Boiler 7
V. Knockdown Boiler Assembly Instructions 10
VI. Air for Combustion & Ventilation 19
VII. Venting 23
VIII. Steam Boiler Piping & Trim Installation 27
A. Heating System Piping 27
B. Indirect Water Heater Piping 36
IX. Water Boiler Piping 37
A. Heating System Piping 37
B. Tankless Heater Piping 42
X. Gas Piping 44
XI. Control System Wiring 45
A. Standard Steam / Water 45
B. CSD-1 Steam / Water 46
XII. Start-Up & Checkout 50
XIII. Service & Maintenance 56
XIV. Parts & Cartons Contents 58
I Product Description
The Series 32 boilers are low pressure cast iron gas fired steam or hot water boilers designed for use in commercial heating
applications. These boilers are Category I draft diverter equipped appliances, which must be vented by natural draft using a
lined masonry or listed metal chimney system. An adequate supply of air for combustion, ventilation and dilution of flue gases
must be available in the boiler room. This boiler is intended for use with natural gas only.
The Series 32 may be used on low pressure steam heating systems or forced hot water heating systems and is intended for
installation in “closed” systems only. Hot water Series 32 boilers are available with up to two optional tankless heaters for
domestic hot water generation.
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Figure 1: Base Model - General Configuration
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II Specifications

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3
Table 1A: Dimensional Data
Jacket
Overall
Len
g
t
h
'A' 'B'
Dia.
'C'
Dia.
'D'
Dia.
'E'
Dia.
'F'
Dia.
'G'
Dia. 'H' 'J' 'K' 'L' 'M' 'N' 'P' 'R' 'S' 'T' 'U' 10" 12"
32-475W(S)N 36 3/4 12 ----- -----183/8273/16-----1 32-570W(S)N 42 1/4 10 10 ----165/16 ----1215/16325/8----2- 32-665W(S)N 47 5/8 10 12 ----191/16 ----1511/16381/16----11 32-760W(S)N 53 1/8 12 12 ----213/4 ----1511/16431/2-----2 32-855W(S)N 58 1/2 12 12 ----247/16 ----183/84815/16 -----2 32-950W(S)N 64 12 12 ----273/16 ----183/8543/8-----2
32-1045W(S)N 69 3/8 10 12 12 - - - 19 1/16 21 3/4 - - - 15 11/16 27 3/16 32 5/8 - - - 1 2 32-1140W(S)N 74 7/8 12 12 12 - - - 21 3/4 21 3/4 - - - 15 11/16 32 5/8 32 5/8 - - - - 3 32-1235W(S)N 80 1/4 10 12 12 - - - 21 3/4 27 3/16 - - - 18 3/8 32 5/8 38 1/16 - - - 1 2 32-1330W(S)N 85 3/4 12 12 12 - - - 24 7/16 27 3/16 - - - 18 3/8 38 1/16 38 1/16 - - - - 3 32-1425W(S)N 91 1/8 12 12 12 - - - 27 1/4 27 3/16 - - - 18 3/8 38 1/16 43 1/2 - - - - 3 32-1520W(S)N 96 5/8 12 12 12 12 - - 21 3/4 21 3/4 21 3/4 - - 15 11/16 43 1/2 43 1/2 - - - - 4 32-1615W(S)N 102 10 12 12 12 - - 19 1/16 24 7/16 27 3/16 - - 18 3/8 32 5/8 32 5/8 27 3/16 - - 1 3 32-1710W(S)N 107 1/2 12 12 12 12 - - 21 3/4 24 7/16 27 3/16 - - 18 3/8 32 5/8 38 1/16 27 3/16 - - - 4 32-1805W(S)N 112 7/8 12 12 12 12 - - 24 7/16 27 1/4 27 3/16 - - 18 3/8 32 5/8 32 5/8 38 1/16 - - - 4 32-1900W(S)N 118 3/8 12 12 12 12 - - 27 1/4 27 1/4 27 3/16 - - 18 3/8 32 5/8 38 1/16 38 1/16 - - - 4 32-1995W(S)N 123 3/4 10 10 12 12 12 - 16 5/16 21 3/4 27 3/16 27 3/16 - 18 3/8 38 1/16 38 1/16 38 1/16 - - 2 3 32-2090W(S)N 129 1/4 12 12 12 12 12 - 21 3/4 21 3/4 24 7/16 27 3/16 - 18 3/8 32 5/8 32 5/8 27 3/16 27 3/16 - - 5 32-2185W(S)N 134 5/8 12 12 12 12 12 - 21 3/4 24 7/16 27 3/16 27 3/16 - 18 3/8 38 1/16 32 5/8 27 3/16 27 3/16 - - 5 32-2280W(S)N 140 1/8 12 12 12 12 12 - 24 7/16 27 3/16 27 3/16 27 3/16 - 18 3/8 32 5/8 32 5/8 32 5/8 32 5/8 - - 5 32-2375W(S)N 145 1/2 12 12 12 12 12 - 27 3/16 27 3/16 27 3/16 27 3/16 - 18 3/8 32 5/8 32 5/8 32 5/8 38 1/16 - - 5 32-2470W(S)N 151 10 10 12 12 12 12 16 5/16 21 3/4 27 3/16 27 3/16 27 3/16 18 3/8 32 5/8 32 5/8 38 1/16 38 1/16 - 2 4 32-2565W(S)N 156 3/8 10 12 12 12 12 12 19 1/16 24 7/16 27 3/16 27 3/16 27 3/16 18 3/8 38 1/16 32 5/8 38 1/16 38 1/16 - 1 5 32-2660W(S)N 161 7/8 12 12 12 12 12 12 21 3/4 24 7/16 27 3/16 27 3/16 27 3/16 18 3/8 32 5/8 32 5/8 32 5/8 27 3/16 27 3/16 - 6 32-2755W(S)N 167 1/4 12 12 12 12 12 12 24 7/16 27 3/16 27 3/16 27 3/16 27 3/16 18 3/8 32 5/8 32 5/8 32 5/8 32 5/8 27 3/16 - 6 32-2850W(S)N 172 3/4 12 12 12 12 12 12 27 3/16 27 3/16 27 3/16 27 3/16 27 3/16 18 3/8 32 5/8 32 5/8 32 5/8 32 5/8 32 5/8 - 6
1. All Dimensions Are Approximate.
Flue Outlet
No. & Size
Boiler Model
Number
Top Supply
Location
Drafthood Size & Location

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Table 1B: Specifications
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Water
(MBH) (MBH) (Sq. ft) (MBH) (MBH) (Gal) (Gal)
32-475W(S)N 6 475 380 1188 285 330 80-1/2 28.58 39.80 11.4
32-570W(S)N 7 570 456 1425 342 397 80-1/2 32.65 45.47 13.6
32-665W(S)N 8 665 532 1663 399 463 80-1/2 36.72 51.14 15.9
32-760W(S)N 9 760 608 1900 456 529 80-1/2 40.79 56.81 18.2
32-855W(S)N 10 855 684 2138 513 595 80-1/2 44.86 62.48 20.4
32-950W(S)N 11 950 760 2376 570 661 80-1/2 48.93 68.15 22.7
32-1045W(S)N 12 1045 836 2613 627 727 80-1/2 53.00 73.82 25.0
32-1140W(S)N 13 1140 912 2851 684 793 80-1/2 57.07 79.49 27.2
32-1235W(S)N 14 1235 988 3088 741 859 80-1/2 61.14 85.16 29.5
32-1330W(S)N 15 1330 1064 3326 798 925 80-1/2 65.21 90.83 31.8
32-1425W(S)N 16 1425 1140 3563 855 991 80-1/2 69.28 96.50 34.1
32-1520W(S)N 17 1520 1216 3801 912 1057 80-1/2 73.35 102.17 36.3
32-1615W(S)N 18 1615 1292 4050 972 1123 80-1/2 77.42 107.84 38.6
32-1710W(S)N 19 1710 1368 4312 1035 1190 80-1/2 81.49 113.51 40.9
32-1805W(S)N 20 1805 1444 4575 1098 1256 80-1/2 85.56 119.18 43.1
32-1900W(S)N 21 1900 1520 4839 1161 1322 80-1/2 89.63 124.85 45.4
32-1995W(S)N 22 1995 1596 5102 1225 1388 80-1/2 93.70 130.52 47.7
32-2090W(S)N 23 2090 1672 5366 1288 1454 80-1/2 97.77 136.19 49.9
32-2185W(S)N 24 2185 1748 5628 1351 1520 80-1/2 101.84 141.86 52.2
32-2280W(S)N 25 2280 1824 5890 1414 1586 80-1/2 105.91 147.53 54.5
32-2375W(S)N 26 2375 1900 6143 1474 1652 80-1/2 109.98 153.20 56.8
32-2470W(S)N 27 2470 1976 6392 1534 1718 80-1/2 114.05 158.87 59.0
32-2565W(S)N 28 2565 2052 6638 1593 1784 80-1/2 118.12 164.54 61.3
32-2660W(S)N 29 2660 2128 6884 1652 1850 80-1/2 122.19 170.21 63.6
32-2755W(S)N 30 2755 2204 7130 1711 1917 80-1/2 126.26 175.88 65.8
32-2850W(S)N 31 2850 2280 7376 1770 1983 80-1/2 130.33 181.55 68.1
INPUT
3. Ratings Basedon 33,475 Btuh Per Boiler Horsepower
I=B=R NET RATING
Steam
WATER
VOL. 2
BHP
OUTPUT3
2. Water Volume Total (Water Boiler).
1. Water Volume Total To Normal Water Line (Steam Boiler).
BASIC BOILER
MODEL
NUMBER
OF
SECTIONS
WATER
VOL. 1
NATURAL GAS ONLY
HEATING
CAPACITY Combustion
Effy. %

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Figure 2a: Series 32 Steam Boilers -Arrangement Of Steam Riser Connections, Draft HoodsAnd Base Assemblies

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Figure 2b: Series 32 Water Boilers -Arrangement Of Water Supply Connections, Draft HoodsAnd Base Assemblies

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III Before Installing
1) Safe, reliable operation of this boiler depends upon installation by a professional heating contractor in strict
accordance with this manual and the requirements of the authority having jurisdiction.
•In the absence of an authority having jurisdiction, installation must be in accordance with this manual and the latest
edition of the National Fuel Gas Code, ANSI Z223.1.
•Where required by the authority having jurisdiction, this installation must conform to the latest edition of the
Standard for Controls and Safety Devices for Automatically Fired Boilers (ANSI/ASME CSD-1)
2) Make sure that a properly sized chimney is available and is in good condition. Consult the authority having
jurisdiction, Part VII of this manual, and the National Fuel Gas Code for additional information on venting
requirements.
3) Make sure that the boiler is correctly sized.
4) This boiler is designed and listed for use with natural gas only.
5) Boilers installed at altitudes above 2000 ft. require different main burner orifice than those at sea level. Make sure that
the boiler is configured for use at the correct altitude.
6) If this boiler was received as a knockdown boiler, follow the instructions in Section V to assemble the boiler.
IV Locating the Boiler
1) Minimum required boiler room volumes are shown in Table 2. To find the volume of the boiler room calculate:
Boiler Room Volume (ft3) = Length (ft) x Width (ft) x Height (ft)
If the height is greater than 8 ft for the room height, use 8 ft for the height in the above equation.
2) Observe the minimum clearances as shown in Table 3. These clearances apply to all combustible construction, as well as
noncombustible walls, ceilings and doors.Also see Figure 3.
3) This boiler must be installed on a non-combustible floor. Aconcrete pad is not sufficient to protect combustible
flooring.
4) The boiler must be installed on a hard level surface.
5) Do not install this boiler in a location where gasoline or other flammable vapors or liquids will be stored or used. Do
not install this boiler in an area where large amounts of airborne dust will be present, such as a workshop.
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WARNING
All Series 32 boilers must be installed in rooms that are large in comparison with the size of
the equipment and must be installed with the clearances listed in Table 2. Such a room will
have a volume equal to at least 16 times the total volume of the boiler.
WARNING
This Product Must be Installed ByA Licensed Plumber Or Gas Fitter when Installed Within
The Commonwealth Of Massachusetts.
If This Boiler is Equipped With a Tankless Heater, Tankless Heater Piping Must be Installed
by a Licensed Plumber When Boiler is Installed Within the Commonwealth of Massachusetts.

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Table 2: Minimum Room Volumes Based On Sixteen Times Boiler Volume By Model Size
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Boiler
Model
Over All
Length
Jacket
Over All
Depth
Jacket
Over All
Height
Floor To
Top Of
Jacket
Boiler
Volume
(Ft3)
Minimum
Room
Volume
(Ft3)
32-475 36 3/4 32 1/4 46 5/8 32.0 511.7
32-570 42 1/4 32 1/4 46 5/8 36.7 587.4
32-665 47 5/8 32 1/4 46 5/8 41.4 663.1
32-760 53 1/8 32 1/4 46 5/8 46.2 738.8
32-855 58 1/2 32 1/4 46 5/8 50.9 814.5
32-950 64 32 1/4 46 5/8 55.6 890.2
32-1045 69 3/8 32 1/4 46 5/8 60.4 965.9
32-1140 74 7/8 32 1/4 46 5/8 65.1 1041.6
32-1235 80 1/4 32 1/4 46 5/8 69.8 1117.3
32-1330 85 3/4 32 1/4 46 5/8 74.6 1193.0
32-1425 91 1/8 32 1/4 46 5/8 79.3 1268.7
32-1520 96 5/8 32 1/4 46 5/8 84.0 1344.4
32-1615 102 32 1/4 46 5/8 88.8 1420.1
32-1710 107 1/2 32 1/4 46 5/8 93.5 1495.8
32-1805 112 7/8 32 1/4 46 5/8 98.2 1571.5
32-1900 118 3/8 32 1/4 46 5/8 103.0 1647.2
32-1995 123 3/4 32 1/4 46 5/8 107.7 1722.9
32-2090 129 1/4 32 1/4 46 5/8 112.4 1798.6
32-2185 134 5/8 32 1/4 46 5/8 117.1 1874.3
32-2280 140 1/8 32 1/4 46 5/8 121.9 1950.1
32-2375 145 1/2 32 1/4 46 5/8 126.6 2025.8
32-2470 151 32 1/4 46 5/8 131.3 2101.5
32-2565 156 3/8 32 1/4 46 5/8 136.1 2177.2
32-2660 161 7/8 32 1/4 46 5/8 140.8 2252.9
32-2755 167 1/4 32 1/4 46 5/8 145.5 2328.6
32-2850 172 3/4 32 1/4 46 5/8 150.3 2404.3
Figure 3: Clearances To Combustible Construction

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6) The boiler should be located as close to the chimney as possible.
7) Do not install this boiler directly on a surface that may get wet. Raise the boiler on a pad.
Clearances Required For Removal Of Tankless Heater
T-1 T-2 T-3
Left Side 24" 18" (Controls) 27" 32" 42"
Right Side 24" 18" (Controls) 27" 32" 42"
Front 24" 36" (Cleaning-Burner Removal) -------- -------- --------
Rear 24" 36" (Cleaning) -------- -------- --------
Top 24" --------------------- -------- -------- --------
MinimumClearance - Jacket
To Combustible Or Non-
Combustible Construction
Service Clearance To Non-
Combustible Construction
Table 3: Minimum Clearances to Combustibles
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V Knockdown Boiler Assembly Instructions
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A. Prior ToAssembly
1) Thoroughly inspect the cast iron heat exchanger sections for any shipping damage, i.e. cracks in the castings, broken lugs
or punctures due to mishandling.
2) Do not use a damaged heat exchanger section. Replace it with an undamaged heat exchanger section.
3) Keep the base in the shipping carton until it is time to perform the assembly. This keeps foreign material from contami-
nating the burners or creating other hazards. Do not use the base assembly if there are any signs of visible damage.
4) Review all of the installation requirements in this installation manual.
5) Verify that all needed components are on hand. Acomplete list of all sections and cartons that should be on hand,
along with their contents, can be found in the Parts Section.Asummary of the cartons and their contents is shown
below. All boilers except the 32-475 use multiple base modules and therefore require multiple Base Cartons and
Intermediate Cartons. All boilers larger than the 32-855 require multiple Section Joiner Cartons. Some parts, such as
jacket screws and jacket mounting brackets are packed in both the Base Carton and the Base Side Panel Carton.
B. Base Assembly
1) Each base module is tested and shipped assembled.
a. All boilers are assembled using base modules with inputs of 285, 380 and 475 MBH
b. The model 475 boiler requires only a single base module. All other boiler combinations require multiple
base module subassemblies. See Figure 2 for the proper order of assembly.
c. Join Base Sub-assemblies together. Use (4) 3/8”-16 x 3/4” screws, nuts and washers to attach subassemblies. (See
Figure 4)
d. Assemble the base in the location where the boiler is to be installed. Refer to Sections III and IV in this
manual for additional information on placement.
e. Once the base modules are assembled, install the base end panels. These base end panels must be installed
prior to assembling the sections.
f. The base must be level in both directions and supported under all feet. Shim and grout under base if
necessary.
g. Verify that the front and sides of the base are square.
h. Place cardboard covering over the top of the burners to protect them during the assembly of the boiler
sections.
PACKAGE
JACKET SIDEPANELCARTON
TANKLESSHEATER CARTON
POP SAFETYOR RELIEF VALVE
FITTINGSFOR MOUNTING POP SAFETY OR RELIEF VALVE
WARRANTY
PUSHNIPPLEGAUGE
RATINGPLATE
SEALANTFORSEALINGHEATEXCHANGERTOBASE
TANKLESSCOIL OPENINGCOVER PLATESAND HARDWARE
A
SSORTED FITTINGS
INSTALLATION M ANUAL
USER'S M ANUAL
TANKLESS HEATER (IF USED)
LEFT AND RIGHT SIDEJACKET PANELS
LIMIT CONTROLS
GAUGE
LOW WATER CUT-OFF (CSD-1 BOILERS ONLY)
TANKLESSCOIL OPENINGCOVER PLATESAND HARDWARE
A
SSORTED FITTINGS
LIMIT CONTROLS
GAUGE
LOW WATER CUT-OFFS
PUSHNIPPLELUBRICANT
SECTION SEALINGCOMPOUND
BASESIDEPANELS
BRACKETS AND HARDWARE FOR ATTACHINGJACKET AND FLUE COLLECTOR TO SIDES OF BOILER
WATER TRIM CARTON
STEAM TRIM CARTON
BOILER CARTON
SUM MARY OF CONTENTS
BASE MODULE
BRACKETS AND HARDWARE FOR ATTACHINGJACKET AND FLUE COLLECTOR
FRONT,TOP,REAR JACKET PANELS
FLUECOLLECTOR
PUSHNIPPLES
TIEROD HARDWARE
BASECARTON
INTERMEDIATECARTON
SECTION JOINER CARTON
BASESIDEPANELCARTON

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Figure 4: Multiple Base Assembly

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C. Section Assembly
1) Clean the boiler sections inside and out to remove dirt due to shipping and handling.
2) Clean all nipples and nipple ports with kerosene immediately prior to section assembly.
3) Set the left end section on the base so that the locating lugs on the bottom of the section go inside the front and
rear base panels. Left end sections are identified by “LEH” cast on the section. Right end sections are identified
by “REH” cast on the section.
4) Apply the Loctite 592 lubricant/sealant furnished to two nipples and the nipple ports in the left section.
5) Start each nipple by hand in the nipple port and bump carefully with a wooden block to set.As this is done, check
the nipple frequently with the nipple gauge to verify that the nipple is square in the port and not cocked (see
Figure 5). Continue to bump the nipple until the nipple gauge just touches the ground surface as measured in two
directions 90 degrees apart.
6) Apply the “joint sealer” to all ground surfaces on the left end section.
7) Carefully join the first intermediate section with the left end section. Bump lightly to secure.
8) Install 5/8" nuts and washers on one end of each of three 9 ¾” tie rods. Install one of these tie rods in each of the
three bosses in the left and intermediate section. Lubricate the other end of each of these tie rods with heavy oil or
grease. Install 5/8" nuts and washers on the lubricated ends. Finger tighten.
9) Draw the two sections together slowly and evenly, tightening each tie rod a little at a time so that the sections are
evenly spaced. KEEPTHE NIPPLESALIGNED WITH THE NIPPLE PORTS – DO NOT DRAW UPTHE
SECTIONS IFTHE NIPPLES ARE COCKED. Continue drawing up the sections in this manner until the
ground surfaces on each section are touching.
10) Repeat Steps (4-9) to assemble the remaining sections.After approximately five sections have been drawn
together, use a pinch bar to insert the wood wedges supplied under the last intermediate section to raise it above
the base. This will make it easier to assemble subsequent sections, particularly the right end section.As each
section is drawn up, move the wedges under that section.
11) After all sections have been drawn up, verify that the bottom lugs on the left end section are still against the left
end base panel. Using a pinch bar, remove the wood wedges and carefully lower the right end of the assembled
block onto the base.
12) Install four block anchors using 3/8 x 2" cap screws, nuts and washers (Figure 6).
13) Loosen all tie rod nuts so that they are finger tight.
CAUTION
Seating the nipples in accordance with the above instructions will make drawing the sections
together easier and assure water tight joints.
CAUTION
Some boilers use intermediate sections with supply tappings. When these sections are used, it is
critical that they are located in the correct position. When assembling the sections refer to
Figure 2 to verify that they are assembled in the correct order.

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Figure 6: Assembly Of Sections
Figure 5: Use Of Nipple Gauge

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14) Install the tankless coil/s and/or cover plates using the gaskets and 3/8 x 7/8 bolts and washers provided (see
Figure 7).
15) Test assembled block for leaks. Unless local codes have other requirements, use the following procedure:
a) Run a hose from the water service to one of the lower tappings. Install a ball or gate valve in one of the
tappings on the top of the block and connect the other end of this valve to a drain. Install a gauge in any
other convenient tapping. Plug all remaining unused tappings (See Figure 8).
b) Fill the boiler until a steady stream of water is observed going down the drain.
c) Slowly close the valve until the pressure in the boiler reads between 10 and 50 psi. DO NOT EXCEED.
d) Carefully examine all parts of the boiler block assembly for leaks.
e) Drain the boiler and remove all plugs from tappings that will be used for connections and trim (see
Piping Sections in this manual).
16) Use the supplied Resbond sealant to seal the joint between the assembled block and the base.
17) Inspect the joints between the sections for any areas that are not flue gas tight. Seal any areas found with the
remaining Resbond sealant.
Figure 8: Testing Boiler Assembly For Leaks
Figure 7: Tankless Heater Installation
D. Draft Hood Installation
1) The model 32-475 requires only one draft hood.All other boilers require multiple draft hoods. WHEN MUL-
TIPLE HOODSARE USED THEY MUST BE ARRANGED SO THAT EACH HOOD IS OVERA COR-
RESPONDING SIZED BASE MODULE.
2) Use the 1" x ½” Cerablanket strips provided to seal the draft hoods to the block assembly. To do this, lay the strips
along the top of the block in the locations that will be under the edges of the draft hood (see Figure 9). Overlap
the Cerablanket strips at the corners.
3) Install the rear panel support brackets using #10 x ½ sheet metal screws (Figure 3).
4) On the left end section, insert a 5/8 x 4 threaded stud through the available hole in the top rear tie rod lug. Use a 5/
8 nut and washer on each side of the lug to attach this stud, making sure that the stud is approximately centered on
the lug (See Figure 10). In the same manner, install 5/8 x 4" studs on the right end section and on all intermediate
sections that span the joint between base modules.
5) Place the left-most draft hood on the boiler. Insert two 5/16 x 3 carriage bolts through the holes in the lip on the
front of the hood with the head of the bolts on the underside of this lip. Thread a 5/16 washer and brass wing nuts
on each of these bolts. Slip the bolt heads into the pockets on the top of the intermediate sections (Figure 11).
Tighten just sufficiently enough to hold the hood in place.

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6) Hang a rear tie rod channel bracket on the 4" stud installed in the left end section (Figure 12a).
7) Facing the rear of the boiler, find the square mounting holes underneath the draft hood. Drop a 5/16 x 5" carriage
bolt through this hole and through the hole in the rear tie rod channel bracket. Loosely secure with a wing nut and
washer (Figure 12b). Install a second rear tie rod channel bracket on the other side of the draft hood.
8) Using a plumb bob, adjust the rear tie rod channel brackets so the jacket mounting holes in the rear tie rod channel
brackets line up with the holes in the jacket rear panel support brackets on the base modules.
9) Tighten the 5/16 wing nuts on the front and back of the draft hood.
10) Repeat Steps 5-9 to install the remaining draft hoods.
NOTE
Installation of the draft hoods will be easier if one person supports the rear of the hood while
another installs the carriage bolts, nuts and washers.
CAUTION
Before tightening the draft hood hold-down nuts, make sure the gasketing is properly located
under the draft hood. Recheck the positioning of the gaskets after tightening the nuts and make
adjustments as necessary.
Figure 9: Draft Hood Gasket Installation Figure 10: Hardware Arrangement for Rear Tie
Rod Mounting Bracket Installation

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Figure 12b: RearAttachment Of Draft Hood
Figure 11: FrontAttachment Of Draft Hood Figure 12a: Mounting Rear Tie Rod Channel
Bracket

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NOTE
Before installing the jacket, make sure to plug any tappings which are not going to be used. Also make sure that no
tappings are plugged which will be needed later for piping the boiler. See Sections VIII and IX for piping and trim
installation.
D. Jacket Assembly Instructions
1) On the left and right side base panels attach the jacket side panel zee bracket and the jacket top support
bracket end angle with #10 x 1/2” sheet metal screws as shown in Figure 13.
2) Jacket top support brackets are required at the joints between base modules and at each end of the base
assembly. Attach the jacket top support brackets to the base front panel(s) with #10 x 1/2” sheet metel
screws as shown in Figure 13. Also fasten the jacket top support brackets located on each end of the
assembly to the jacket top support bracket end angles using #10 x 1/2” sheet metal screws.
3) Remove the appropriate knockouts from the side jacket panels.
4) Hang the left hand jacket side panel assembly in the slot of the jacket top support bracket and over the rear
brackets of the boiler assembly. Fasten the jacket side panel to the jacket side panel zee bracket, the jacket
rear panel support bracket, the rear tie rod channel bracket and the jacket top support bracket using
#10 x 1/2” sheet metal screws.
5) Repeat the instructions in step 3 to install the right side panel.
6) Attach the jacket rear panel assembly(s) to the jacket rear panel support brackets and the tie rod channel
brackets using #10 x 1/2” sheet metal screws.
7) Before installing the jacket top panel(s) locate the position of any intermediate supply risers and remove the
appropriate knockouts.
8) Install the jacket top panel(s) by placing the left and right flanges of the jacket top panel(s) in the slots of the
jacket top support brackets and attach using #10 x 1/2” sheet metal screws.
9) Attach the door knobs to the removable jacket front panel(s) with 8-32 x 1/2” machine screws.
10) Hang the jacket front panel(s) over the front flange of the jacket top panel while making sure the bottom of
the door drops into the slots in the gas manifold bracket.
Figure 13: Jacket Mounting BracketArrangement

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Figure 14: Exploded View Of Jacket Assembly