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Technical Information
CUT-63/64 R4 (8/14-5M)
Printed in U.S.A.
©2014 PB Heat, LLC. All rights reserved.
1 Net Ratings are based on DOE Heating Capacity or Gross Output less an allowance for normal piping and pickup as determined by AHRI requirements.
Water ratings are based on a piping and pickup factor of 1.15. Steam ratings are based on a piping and pickup factor of 1.33. Consult us before selecting a
boiler for gravity hot water installations or for installations having unusual piping and pickup requirements such as exposed piping, night set-back, etc. Ratings
shown are for elevations up to 2,000 feet. For elevations above 2,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea level.
2 Heating Capacity and Annual Fuel Utilization Efficiency (AFUE) ratings are based on U.S. Government tests. Before purchasing this appliance, read important
information about its estimated annual energy consumption or energy efficiency rating that is available from your retailer.
3 Thermal efficiency, combustion efficiency and gross output are determined in accordance with BTS 2000 Testing Standard.
Tapping Locations
Location
Size
N.P.T
Steam Water
K 1-1/4" Skim Tapping Skim Tapping
L 1" Tank Supply/Limit N/A
M 1" Tank Return N/A
N 3/4" Boiler Drain Boiler Drain
P 3" Supply Supply
R 2-1/2" Return Return
S 3/4" Safety Valve Relief Valve
T 1/2" Gauge Glass N/A
U 3/4"
Primary Probe Low Water
Cut-Off
N/A
V 3/4" Primary Limit Secondary Limit
W 3/4" Secondary Limit
Pressure/Temperature
Gauge
X 3/4" Pressure Gauge Primary Limit
Y 3/4"
Secondary Probe Low
Water Cut-Off
N/A
Boiler Dimensions
Boiler
Model
Number
Jacket
Depth
“A”
Jacket
Width
“B”
Jacket
Height
“C”
Rear
of Jkt.
to c/l
of Vent
“D”
Left of
Jkt. to
c/l of
Vent
“E”
Vent
Size
Dia.
“F”
Overall
Depth
“G”
Rear of
Jkt. to
c/l of
Supply
“H”
Rear of
Jkt. to
c/l of
Gas Inlet
“J”
Boiler
Model
Number
Jacket
Depth
“A”
Jacket
Width
“B”
Jacket
Height
“C”
Rear
of Jkt.
to c/l
of Vent
“D”
Left of
Jkt. to
c/l of
Vent
“E”
Vent
Size
Dia.
“F”
Overall
Depth
“G”
Rear of
Jkt. to
c/l of
Supply
“H”
Rear of
Jkt. to
c/l of
Gas Inlet
“J”
63-03L 28-1/8" 16-1/8" 36-3/8" 5-5/8" 8-1/16" 6" 37-1/4" 18-11/16" 25-7/8" 63-06 28-1/8" 28-7/8" 36-3/8" 6-1/8" 14-7/16" 9" 39-1/4" 18-11/16" 25-7/8"
63-03 28-1/8" 16-1/8" 36-3/8" 5-5/8" 8-1/16" 6" 37-1/4" 18-11/16" 25-7/8" 64-07 28-1/8" 33-1/8" 36-3/8" 6-1/8" 16-9/16" 9" 39-1/4" 18-11/16" 25-7/8"
63-04L 28-1/8" 20-3/8" 36-3/8" 5-1/8" 10-3/16" 7" or 6”* 37-1/4" 18-11/16" 25-7/8" 64-08 30-1/8" 37-3/8" 36-3/8" 7-1/2" 18-11/16" 10" 43-1/8" 18-15/16" 26-1/8"
63-04 28-1/8" 20-3/8" 36-3/8" 5-1/8" 10-3/16" 7" or 6”* 37-1/4" 18-11/16" 25-7/8" 64-09 30-1/8" 41-5/8" 36-3/8" 7-1/2" 20-13/16" 10" 43-1/8" 18-15/16" 26-1/8"
63-05L 28-1/8" 24-5/8" 36-3/8" 6-5/8" 12-5/16" 8" 39-1/4" 18-11/16" 25-7/8" 64-10 30-1/8" 45-7/8" 36-3/8" 8-1/2" 22-15/16" 12" 45-1/8" 18-15/16" 26-1/8"
63-05 28-1/8" 24-5/8" 36-3/8" 6-5/8" 12-5/16" 8" 39-1/4" 18-11/16" 25-7/8" 64-11 30-1/8" 50-1/8" 36-3/8" 8-1/2" 25-1/16" 12" 45-1/8" 18-15/16" 26-1/8"
64-12 30-1/8" 54-3/8" 36-3/8" 8-1/2" 27-3/16" 12" 45-1/8" 18-15/16" 26-1/8"
Boiler Ratings
Series 63
™
Boiler
Model Number
Input,
MBH
Heating Capacity²,
MBH
Net Ratings¹ AFUE²
Water Steam
Steam,
sqft
Steam,
MBH
Water,
MBH
Water,
%
Steam,
%
63-03L
63-03
88.5
118
73
99
74
98
233
308
56
74
63
86
82.4
83.5
83.0
82.6
63-04L
63-04
147.5
177
123
148
123
147
383
458
92
110
107
129
82.7
83.4
82.6
82.4
63-05L
63-05
63-06
206.5
236
287.5
172
198
241
171
196
238
533
613
746
129
147
179
150
172
210
82.9
83.3
83.2
82.3
82.2
82.0
Water Content
Approximate
Shipping
Weight
(lbs.)
Water,
Gallons
Steam,
Gallons
13.2
13.2
9.3
9.3
465
465
15.6
15.6
10.8
10.8
576
576
18.0
18.0
20.4
12.4
12.4
13.9
700
700
812
Series 64
™
Boiler
Model Number
Input,
MBH
Gross Output³,
MBH
Net Ratings¹ Thermal Efficiency³
Combustion
Efficiency³
Water Steam
Steam,
sqft
Steam,
MBH
Water,
MBH
Water,
%
Steam,
%
Water,
%
Steam,
%
64-07
64-08
64-09
64-10
64-11
64-12
345
399
460
518
575
633
286
331
382
430
477
525
274
318
367
413
459
506
858
996
1146
1292
1433
1583
206
239
275
310
344
380
249
288
332
374
415
457
81.0
81.0
81.0
81.0
81.0
81.0
79.4
79.6
79.7
79.8
79.8
79.9
83.0
83.0
83.0
83.0
83.0
83.0
82.5
82.5
82.5
82.5
82.5
82.4
Water Content
Approximate
Shipping
Weight
(lbs.)
Water,
Gallons
Steam,
Gallons
22.8
25.2
27.6
30.0
32.4
34.8
15.5
17.0
18.6
20.1
21.7
23.2
945
1081
1218
1354
1490
1527
*Draft hood outlet and vent damper are 7" diameter on 63-04L and 63.04. These models are also certified
in USA with 6" vent using vent reducer provided in draft hood carton. Install reducer on outlet of vent damper.