Check Firing Rate; Param Eter Settings - ECR International COMBI 115 Installation, Operation And Maintenance Manual

9 .1 4 Check Firing Ra t e
1.
Measure input , if a gas m et er is inst alled in t he syst em .
• Turn off gas to all other appliances.
• Act ivat e som e heat ing zones t o dissipat e heat .
• Set boiler on high fire using Chimney Sweep Function.
• Use ½ , 1 or 2 cu ft dial on gas m et er. Measure t im e
required for t wo or m ore com plet e revolut ions. Measure
t im e for one or m ore m inut es.
• Calculat e input .
For N a t ura l Ga s :
I nput ( MBH) =
Example: Natural Gas - Gas flow from
Met er = 2 cu ft
Measured t im e = 72 seconds
=
For Propa ne ( LP) :
I nput ( MBH) =
For Met ric form ulas- See Glossary
2.
Com pare m easured input t o t able below. I f calculat ed
input is not in range given in Table 9-2 check firing rate
again aft er set t ing t he com bust ion following st eps in
sect ion 9.12.
NOTICE
I m port a nt ! Record any changes m ade t o Param et ers on
chart found in t he Applicat ion Guide supplied wit h your
boiler.
Ta ble 9 - 2 I nput Ra t e @ H igh Fire ( M BH )
Approx im a t e Ra t e @
1 0 0 % Fire ( M BH )
Size
75
100
115
125
150
165
205
9 - START U P PROCED U RE
3600 x cu ft
seconds
3600 x 2 cu ft
= 100 MBH
72 seconds
9160 x cu ft
seconds
75
93.5
115
125
150
164
205
9 .1 5 Pa ra m et er Set t ings
Program boiler elect ronic board param et ers as follows:
• Press and
seconds unt il program " P0 1 " appears on t he display
alt ernat ed wit h t he set value;
• Press or
• Press , value of select ed param et er begins
flashing, press
to confirm the value or press
• Press
wit hout saving.
Furt her inform at ion in regards t o param et ers list ed in t he
following t able are supplied t oget her wit h required accessories
if necessary.
5 6
t oget her, hold t hem down for 6
t o scroll t he list of param et ers;
t o change t he value;
240013687 REV A [ 09/ 01/ 2022]
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