Burnham FREEDOM Installation, Operating And Service Instructions page 61

7) Start the boiler using the lighting instructions on page 49. After the boiler is powered up, it should go through the following
sequence.
Sequence Display
U.125
or Blank
1
0.SWT
2
(After call for heat from heating thermostat)
A.SWT
3
5.SWT
4
1.SWT
5
2.SWT
6
3.SWT
7
8) Upon initial start-up, the gas train will be filled with air. Even if the gas line has been completely purged of air, it may take
several tries for ignition before a flame is established. If more than 5 tries for ignition are needed, it will be necessary to
press the reset button to restart the boiler. Once a flame has been established for the first time, subsequent calls for burner
operation should result in a flame on the first try.
9) Inspect the flame visible through the window. On high fire the flame should be stable and mostly blue (Figure 11.1). No
yellow tipping should be present; however, intermittent flecks of yellow and orange in the flame are normal.
10) Check the inlet pressure and adjust if necessary. Verify that the inlet pressure is between the upper and lower limits shown
on the rating plate with all gas appliances on and off.
THE OuTlET PrEssurE FOr THE gas ValVE Has bEEn FaCTOrY sET
anD rEQuirEs nO FiElD aDJusTMEnT. THis sETTing is saTisFaCTOrY
FOr bOTH naTural gas anD PrOPanE. aTTEMPTing TO aDJusT THE
OuTlET PrEssurE MaY rEsulT in DaMagE TO THE gas ValVE anD
CausE PrOPErTY DaMagE, PErsOnal inJurY Or lOss OF liFE.
Meaning
Checking internal software (power-up only)
Boiler in standby.
Self-Check on Start-up
Blower and circulator on. Checking for adequate air flow.
Prepurge
Trial for ignition
Flame established. Boiler responding to a call for heat.
Figure 11.1: burner Flame
SWT
= Supply Water Temp. No call for heat.
Warning
1