138
107672-01 - 7/17
XIII. Service and Maintenance
(continued)
Refer to Section VII “Venting” to re-assemble any vent system components that are disassembled during this inspection and
for details on supporting, pitching, and terminating the vent system.
s.
Replace any wiring
which has been disconnected.
t.
Inspect the hydronic system
. Look for leaks and repair any found. If system contains antifreeze, or other additives,
test and/or maintain them as directed by the additive manufacturer. Refer to Section XI “Start-up and Checkout” for
important information on boiler water and the use of boiler water additives.
nOTiCE
Do not remove return pipe connection from heat exchanger to service the circulator.
u.
Test the flow switch
. To do this:
•
Start with the boiler in standby.
•
Either close a shut-off in the boiler loop or unplug the boiler pump at connector L1. (see Figure 10.6)
• Initiate a call for heat and confirm that the boiler shows an Active Fault indicating that the flow switch is
open.
v.
Follow ALL instructions in
Section XI “Start-up and Checkout” to place the boiler back in service, including the
performance of a combustion test.
CaUTiOn
If burner comes on with no flow through the boiler, there is a problem with the flow switch. Turn the boiler
off immediately. Failure to do so could cause severe heat exchanger damage.
Summary of Contents for K2WT-080B
Page 83: ...83 107672 01 7 17 PAGE LEFT INTENTIONALLY BLANK...
Page 89: ...89 107672 01 7 17 X Wiring continued Figure 10 5 Internal Ladder Diagram...
Page 90: ...90 107672 01 7 17 X Wiring continued...
Page 91: ...91 107672 01 7 17 Figure 10 6 Internal Wiring Connections Diagram X Wiring continued...
Page 102: ...102 107672 01 7 17 Lighting and Operating Instructions XI Start Up and Checkout continued...
Page 147: ...147 107672 01 7 17 XV Service Parts continued...
Page 151: ...151 107672 01 7 17 XV Service Parts continued...
Page 153: ...153 107672 01 7 17 XV Service Parts continued 85 86 91 95...
Page 162: ...162 107672 01 7 17...
Page 163: ...163 107672 01 7 17...
Page 164: ...164 107672 01 7 17...
Page 165: ...165 107672 01 7 17...
Page 166: ...166 107672 01 7 17...
Page 167: ...167 107672 01 7 17...
