21
BOILER DIMENSIONS & RATINGS
Table 7.1: Boiler Ratings
✸ As an ENERGY STAR
®
Partner, PB Heat has determined that these firing rates meet the ENERGY STAR guidelines for energy efficiency.
✝ All chimneys are 8" x 8" x 20' except those models denoted with (✝), which are 8" x 12" x 20'.
1 Burner input based on No. 2 fuel oil with a heating value of 140,000 Btu per gallon.
2 Net I=B=R water ratings based on an allowance of 1.15.
3 Net I=B=R steam ratings based on an allowance of 1.333.
4 Consult factory before selecting a boiler for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping
systems, etc.
5 Output is Heating Capacity for models with inputs <300 MBH and Gross Output for models with inputs ≥300 MBH. Heating Capacity and Annual Fuel
Utilization Efficiency (AFUE) ratings are based on U.S. Government tests, with 13% CO
²
and –0.02" w.c. draft over fire. Before purchasing this appliance, read
important information about its estimated annual energy consumption or energy efficiency rating that is available from your retailer.
6 Combustion efficiency and gross output are determined in accordance with The Hydronics Institute’s Testing and rating standard for Heating Boilers; @ 12.5%
CO
²
and -0.02" w.c. draft over fire.
Series EC/ECT
Model
Number
Input
Output
5
,
MBH Net I=B=R Ratings
4
AFUE,
%
Thermal
Efficiency
6
,
%
Combustion
Efficiency
,
%GPH¹ MBH Water Steam
Steam,
sqft
Steam,
MBH³
Water,
MBH² Water Steam
EC/ECT-03
✸
0.75 105
92 91
283 68 80 86.6
✸
85.4
✸
– –
EC/ECT-03
✸
1.00 140
121 12 0
375 90 105 85.3
✸
84.4
– –
EC/ECT-03 1.20 168
144 142
446 107 125 83.9 82.9
– –
EC/ECT-04
✸
1.25 175
152 151
471 113 132 86.1
✸
85.1
✸
– –
EC/ECT-04
✸
1.50 210 181 180 563 135 157 85.2
✸
84.5
– –
EC/ECT-04 1.75 245 209 208 650 156 182 84.5 83.8
– –
EC/ECT-05
✸
1.75 245 214 212 663 159 186 86.2
✸
85.6
✸
– –
EC/ECT-05
✸
2.00 280 241 240 750 180 210 85.2
✸
84.6
– –
EC/ECT-05
✝
2.50 350 286 286 896 215 249 – –
81.9 84.1
EC/ECT-06
✝
2.75 385 321 321 1004 241 279 – –
83.3 84.4
EC/ECT-06
✝
3.00 420 347 347 1083 261 302 – –
82.5 83.7
Water Content,
gal
Minimum
Stack
Draft
Required,
in. W.C.Water Steam
17.40 14.16 -.03
17.40 14.16 -.04
17.40 14.16 -.05
21.72 17.28 -.03
21.72 17.28 -.04
21.72 17.28 -.05
26.04 20.40 -.03
26.04 20.40 -.04
26.04 20.40 -.05
30.36 23.52 -.04
30.36 23.52 -.05
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