Burnham ES2 Manual

ES2™
Gas Fired,
Chimney Vented,
Cast Iron Water Boiler
Fully Updated for
D.O.E. 2012 Compliance!
• 85%AFUE,ENERGYSTAR®certified
• Electronicignition
• EquippedwithIQControlSystem™
• 70–280MBH(7sizes)
• Industrystandardtappinglocations,allows 
 easy,directreplacementforthousandsof  
 existingboilerinstallations
• Solid,reliable,American-madecastironheat
 exchangercanacceptreturnwatertempsas 
 lowas110°F
• Lifetimelimitedwarranty
• ConsistsoftheIntelligent
HydronicControland 
IQOptionPanel
Intelligent Hydronic Control
• Combinesaquastat,relay,andignitionfunctionsinto
asinglemodule
• Twocustomizableintegratedswitchingrelaysfor
easyadditionofadditionalheatingzoneorindirect
waterheater
• Energysaving“thermalpurge”,whichworksby
circulatingresidualwarmwater(140°orabove)in
theheatingsystembeforefiringtheboiler
IQ Option Panel
• Enablestheeasyplug&play
installationofoptionalfeatures
suchasoutdoorreset,LWCO,
andhighlimit
Optional Touchscreen
• LCDdisplaysallboilersettings,
diagnostics,andtroubleshooting
insentences,notcodes
boiler
control
option
panel
option
card
control
system
85% Efficient!

©2012U.S.BoilerCompany,Inc.-Lancaster,PA
Phone:1-888-432-8887
PrintedintheU.S.A.
FormNo.HYDL09081-15ms www.usboiler.net
ES2 Dimensions & Connections
Model
Dimensions (inches) Connections (inches) Water
Content
(gal.)Width Height Depth Supply Return
Gas
Valve
Relief
Valve
ES2-3 12-3/4 41 33 1-1/4 1-1/4 1/2 3/4 2
ES2-4 15-1/2 41 33 1-1/4 1-1/4 1/2 3/4 3
ES2-5 18-1/2 41 33 1-1/4 1-1/4 1/2 3/4 4
ES2-6 21-1/2 41 33 1-1/4 1-1/4 1/2 3/4 5
ES2-7 24-3/4 41 33 1-1/4 1-1/4 3/4 3/4 6
ES2-8 24-3/4 41 33 1-1/4 1-1/4 3/4 3/4 7
ES2-9 30-3/4 41 33 1-1/4 1-1/4 3/4 3/4 8
*Addsuffix“N”fornaturalgas,orsuffix“L”forLPgasmodels
 Allmodelscertifiedforusefromsealevelto10,000feetinelevation.Outputsarereducedby2%per1,000feetin
 elevationsfrom5,000to10,000feet.
 AllES2sareshippedwith30psireliefvalves,MAWPis50psi.
64”
FLOOR
LINE
23”**
41”
4” “W” 1”
40” FLUE
34” ELECTRICAL
27” SUPPLY
18” GAS
15” RETURN
FLOOR
LINE
0”
0” 13” 24”29” 31”
4”
43”
6”
VENTILATION AIR
INLET OPENINGS***
12”
MAX
12”
MAX
6” MIN*
NOTES:
Caution: chimney, liner, and vent connector must meet requirements specied by manufacturer’s installation instructions
* Minimal radial distance around vent pipe and breeching
** Add height required to maintain 6” clearance from all breeching components
*** Area of each opening 1 sq. inch for each 1,000 BTUH input - with minimum of 100 sq. inches. Height of opening should be half the width.
ES2: Technical Information
ES2 Ratings & Specications
Model AFUE%
Input
(MBH)
DOE
Heating
Capacity
(MBH)
Net AHRI
(MBH)
Vent Size
(Inches)
Approx.
Shipping
Weight.
(lbs.)
ES2-3 85 70 59 51 4 254
ES2-4 85 105 89 77 5 301
ES2-5 85 140 119 103 6 353
ES2-6 85 175 149 130 6 405
ES2-7 85 210 178 155 7464
ES2-8 84 245 208 181 7514
ES2-9 84 280 208 207 8564
Standard Equipment
• Insulatedsleek,modernjacket
• Integrateddraftdiverter,damperandconnectorincluded
• Heavygauge1”and1-1/2”baseinsulation
• IntelligentHydronicControl–Simpleself-diagnostic 
 controlsystemwith3-digitreadoutforstatussettings
 anderrors
• IQOptionPanel,acceptsplug&playIQOptionCardsfor
 –OutdoorresetwithDHWpriority
 –Autoormanualresetlowwatercutoff
 –Autoormanualauxilliaryhighlimit
• Step-openingredundantgasvalve
• Stainlesssteelfluebaffles
• 110°Fminimumreturntemperaturerating
• Sparkignitionwithcontinuousretry
• User-friendlywiringwith120VJ-box
• Taco007circulatorwithpipingwithwiringharness
• Castironsectionassembly
• Resettableblockedventswitch
• Boilerdrainvalve
• Castironsupplymanifoldwithsafetyreliefvalvetapping
AS
ME
H