IBC EX 850 Quick Start Guide

EX 700 - Convert to NG fuel (P-Kit 1200)
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Testing and adjusting
Measuring the inlet gas pressure
1. Beforeperformingacombustiontestandadjustment,turnofftheboiler’sexternalgasshut-offvalve.
2. Removetheinletgaspressuretestportplugwitha3mmAllenkey.NotethefittinghasBSPthreads.
3. Usethesuppliedfittingtotransitionfrom1/8"BSPtobarbedforconnectiontoamanometer.
4. Attachamanometertotheinletpressuretestport,andturnongastoappliance.
Staticmanometerreadingshouldbeideally7"w.c.forNaturalGasand11"w.c.forPropane.
Minimumandmaximumstaticpressureshouldbebetween5"and14"w.c.Monitorpressurethroughout
thecommissioning(start-up)procedure.Pressuremaydropupto1"to2"w.c.athighfire.
5. Beforefiringtheboiler,turnthehighfire(gas-airratio)adjustmentscrewcounter-clockwise¾to1fullturnto
increasethefuel(enrichenthemixture)beforefiringuptheboiler.
6. Beforeyouchangetheloadtomanualcontrol,notetheloadsetting.
7. Settheloadtomanualcontrol,andsettheheat-outvaluetothemaximumMBHfortheboiler.Thisloadshould
belargeenoughtoallowtheboilertooperateathighfireforover10minutes.
Performing a combustion test
Fuel High Fire Low Fire CO Max PPM
Range % Target %
Range % Target %
NaturalGas
9.0–10.0 9.5
8.2–9.2 8.7
<150
Propane
10.3–11.3 10.8
9.3–10.3 9.8
<250
Table 2 Combustion test target ranges - CO
2
/ Maximum CO
1.
Aftertheboilerislitandisathighfire,insertthecombustionanalyzertestprobeintothefluegastestport.Then
adjustthehighfire(gas-airratio)adjustmentwithasmallslotscrewdriveraccordingtoTable 2 values.This
adjustmentscrewisverysensitiveandwillonlyneedverysmalladjustmentstofinetunethegasvalve(1/16of
aturnatatimeonly).Turncounter-clockwise(inthedirectionofthe'+'sign)toraisetheCO
2
%(torichen).Turn
clockwisetolowerCO
2
%.

IBC EX 850 Specifications

General

Brand	IBC
Model	EX 850
Category	Boiler
Language	English