47
2. Remove Burner Access Panel and Burners. See
Paragraph F. Clean Burners if necessary.
3. Remove Jacket Top Panels.
4. Remove Canopy from top of boiler.
5. Thoroughly clean the flueways with flue brush. See
Figure 46.
6. Clean boiler heating surface accessible from
combustion chamber with straight handle wire
brush. Reinstall burners and connect gas train. See
Paragraphs F & G.
7. Place boiler in operation in accordance with
Lighting or Operating instructions. Test gas line for
leaks in accordance with Section VI: Gas Piping,
Paragraph C.
8. Replace Jacket Front Removable Door.
CAUTION
When necessary to remove burners, be sure to
reinstall them in the original manner by engaging
the orifice and locating hole in the rear of the
burner tray. Burners must be aligned with the
burner manifold.
F.
Remove Burners
for cleaning, changing orifice plugs,
or repairs.
1. Turn off electric service to boiler.
2. Turn off gas supply to boiler.
3. Remove jacket front panel.
4. Disconnect pilot tubing at gas valve.
5. Disconnect thermocouple tubing at gas valve
(Continuous Ignition only). Disconnect igniter/
sensor cable and ground wire at ignition module
Intermittent Ignition (EI) only. Disconnect flame
roll-out switch wires.
6. Remove burner access panel.
7. Mark location of pilot main burner on manifold.
8. Hold burner on throat. Lift slightly to clear orifice.
Pull burner from combustion chamber. See Figure
10. Pilot main burner can only be removed by lifting
at 45° angle after adjacent burner to right is removed
(1" burners only).
9. Check burners to be sure they do not contain foreign
matter or restrictions. Clean burners with a soft
bristle brush, blow any dirt out with compressed air
or use a vacuum cleaner. See Figure 46.
G.
Remove Pilot Assembly
for Servicing. Remove
machine screw(s) holding pilot burner to pilot bracket,
after first removing burner with pilot assembly as
described in Paragraph F, number 8 above.
l. Use a round wire gauge to check spark gap.
Table 11: Pilot Burner Location
2. Spark gap should be 0.125" for optimum
performance.
H.
Install Burners
by reversing procedures used to
remove burner. Main burners must be in slots in rear of
burner tray and seated on main burner orifices.
Reconnect pilot gas supply, and thermocouple lead
(continuous ignition) or igniter/sensor/ground. See
Table 11 for Pilot Burner location.
I.
Lubrication.
Manufacturers Instruction should be
followed on all parts installed on boiler requiring
lubrication. This includes:
1. Type of lubricant to be used.
2. Frequency of lubrication.
3. Points to lubricate.
J.
Check operation.
Follow Paragraphs B through L and
Paragraph O from Section IX: System Start-up.
K.
Conversion Kits.
Follow all instructions provided with
kits. Note that Rating Label provided in kit must be
used. Apply over or beside original Rating Label
allowing the original Serial Number to remain visible.
L.
Tankless Heater.
1. Flushing of Heater. All water contains some
sediment which settles on inside of coil.
Consequently, heater should be periodically
backwashed. See Figure 25. Allow water at city
pressure to run into hosebib A, through heater, and
out hosebib B until discharge is clear. The tees in
which the hosebibs are located should be the same
size as heater connections to minimize pressure
drop.
2. Adjust and maintain mixing valve (tempering valve)
in accordance with manufacturer's instructions.
Boiler Size
Pilot Located Between Burners*
1 inch
40mm
IN3I
1 & 2
1 & 2
IN4I
2 & 3
2 & 3
IN5I
3 & 4
2 & 3
IN6I
4 & 5
3 & 4
IN7I
6 & 7
3 & 4
IN8I
7 & 8
4 & 5
IN9I
8 & 9
4 & 5
IN10
9 & 10
---
IN11
11 & 12
---
IN12
12 & 13
---
* Burners numbered left to right as viewed from front of
boiler.
X. Service Instructions (continued)
Summary of Contents for INDEPENDENCE
Page 4: ...4 Figure 1 Dimensional Drawing...
Page 56: ...56 Manifold and 1 Main Burners XI Repair Parts continued...
Page 62: ...62 XI Repair Parts continued...
Page 64: ...64 XI Repair Parts continued...
Page 72: ...72 U S Boiler Company Inc P O Box 3020 Lancaster PA 17604 1 888 432 8887 www usboiler net...
