CROWN
Boiler Co
AWI & TWI Series
Gas-Fired Natural Draft Hot Water Boilers
INSTALLATION INSTRUCTIONS
These instructions must be affixed on or adjacent to the boiler
Models:
• AWI037
WARNING: Improper installa-
tion, adjustment, alteration,
• AWI061
• AWI095
• AWI128
• AWI162
• AWI195
• AWI229
• AWI262
• AWI295
• TWI061
• TWI095
• TWI128
• TWI162
service or maintenance can
cause property damage, injury,
or loss of life. For assistance or
additional information, consult a
qualified installer, service
agency or the gas supplier.
Read these instructions carefully
before installing.
CROWN
Manufacturer of Hydronic Heatings Products
P.O. Box 14818 3633 I. Street
Philadelphia, PA 19134
Table of Contents
I. Product Description .................................................. 1
VIII. System Piping ............................................. 12
IX. Wiring ......................................................... 16
II. Specifications ............................................................ 1
III. Before Installing ......................................................... 4
IV. Locating the Boiler ...................................................... 4
V. Air for Combustion & Ventilation .............................. 5
VI. Venting ....................................................................... 8
VII. Gas Piping ................................................................ 11
X.
Start-Up & Checkout .................................. 21
XI. Service & Maintenance............................... 27
XII. Troubleshooting ......................................... 29
XIII. Parts ............................................................ 34
I Product Description
The AWI series boiler is a cast iron gas fired water boiler designed for use in closed forced circulation heating systems.
This boiler is a Category I draft diverter equipped appliance, 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.
The TWI series boiler is identical to corresponding sized AWI boiler except for the addition of baffles in the flue passages
to obtain higher AFUEs. The TWI is not available with a standing pilot or for use with propane gas.
II Specifications
FIGURE1A: STANDARDCONFIGURATION(SEEPAGE3FORLETTERDIMENSIONS)
1
FIGURE1B:“LEFTPIPED”CONFIGURATION
FIGURE1C:“TOPPIPED”(T-AWIORT-TWI) CONFIGURATION
2
TABLE1:SPECIFICATIONS
RATINGS - NATURAL AND LP GASES*
DIMENSIONS (INCHES)
BASIC
BOILER
MODEL
DOE
HEATING
CAPACITY
I=B=R NET
RATING,
WATER
INPUT
AFUE
%
NUMBER
OF
"A"
"B"
"C"
"D"
"E"
"F"
SECTIONS
MBH
37
MBH
30
MBH
26
AWI037S
AWI037E
80.0
82.3
2
3
10-1/2
11-3/4
15
7-1/4
5-7/8
7-1/2
9-1/8
10-3/4
12-3/8
14
4
4
5
6
6
7
7
8
8
3-5/8 3-7/8
AWI061S
AWI061E
80.0
82.6
61
95
50
43
68
3-5/8
4-1/8
4-5/8
4-5/8
5-1/8
5-1/8
5-5/8
5-5/8
1-7/8
1-7/8
1-7/8
1-7/8
1-7/8
1-7/8
1-7/8
1-7/8
AWI095S
AWI095E
80.1
82.3
27-7/8
4
78
AWI128S
AWI128E
80.2
82.0
5
128
162
195
229
262
295
105
132
159
186
212
238
91
18-1/4
21-1/2
24-3/4
28
AWI162S
AWI162E
80.3
81.7
6
115
138
162
184
207
AWI195S
AWI195E
80.4
81.4
7
AWI229S
|