Specifications - Burnham ES2 ES2 Installation & Service Instructions Manual

Ratings
Input (MBH)
Boiler Model
ES23
ES24
ES25
ES26
ES27
ES28
ES29
Electrical Requirements: 120VAC, 60 Hz, 1-ph, 15A
Dimensions and Connections
Boiler
Depth Width Height
Model
ES23 33
ES24 33
ES25 33
ES26 33
ES27 33
ES28 33
ES29 33
Water Temperatures and Flows
Boiler Model Water Temperature
ES23
ES24
ES25
ES26
ES27
ES28
ES29
Weights and Volume
Boiler Shipping Weight
Model (lbs)
ES23
ES24
ES25
ES26
ES27
ES28
ES29
4

SPECIFICATIONS

DOE Heating Capacity (MBH) Net I=B=R Rating (MBH)
70
105
140
175
210
245
280
Supply NPT
(inch)
12¾ 41 1¼
15½ 41 1¼
18½ 41 1¼
21½ 41 1¼
24¾ 41 1¼
27¾ 41 1¼
30¾ 41 1¼
Allowable Supply
Water Temperature
(°F)
130-220
130-220
130-220
130-220
130-220
130-220
130-220
Empty Weight
(lbs)
250 170
300 220
350 270
410 320
460 370
510 420
560 470
ES2 Series
59
88
118
147
176
206
235
Return NPT Vent
(inch) (inch)
1¼
1¼
1¼
1¼
1¼
1¼
1¼
Minimum Return
Minimum Flow
(°F)
110
110
110
110
110
110
110
Water Content
(gal)
2
3
4
5
5
6
7
51
77
102
128
153
179
205
Gas NPT Relief Valve
(inch) NPT (inch)
4 ½ ¾
5 ½ ¾
6 ½ ¾
6 ½ ¾
7 ¾ ¾
7 ¾ ¾
8 ¾ ¾
Waterside Pressure Drop
(GPM)
(Ft. of Head)
None
None
None
None
None
None
None
AFUE (%)
85
85
85
85
85
85
85
Drain
NPT (inch)
¾
¾
¾
¾
¾
¾
¾
at 20°F DT
<1
<1
<1
<1
<1
<1
<1