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XIV. 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 and domestic water piping.
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 XII “Start-up and Checkout” for important information on boiler water and
the use of boiler water additives.
u.
Test the boiler 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 BP1. (see Figure
11.7)
• 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 XII “Start-up and Checkout” to place the boiler back in service,
including the performance of a combustion test.
NOTICE
Do not remove return pipe connection from heat exchanger to service the circulator.
WARNING 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 K2WTC-135
Page 81: ...81 107774 02 4 18 X Domestic Hot Water Piping continued Figure 10 1 Domestic Hot Water Piping...
Page 89: ...89 107774 02 4 18 XI Wiring continued...
Page 90: ...90 107774 02 4 18 Figure 11 8 Internal Wiring Connections Diagram XI Wiring continued...
Page 101: ...101 107774 02 4 18 Lighting and Operating Instructions XII Start Up and Checkout continued...
Page 142: ...142 107774 02 4 18 XVI Repair Parts continued...
Page 145: ...145 107774 02 4 18 XVI Repair Parts continued...
Page 148: ...148 107774 02 4 18 XVI Repair Parts continued...
Page 150: ...150 107774 02 4 18 XVI Repair Parts continued...
Page 152: ...152 107774 02 4 18 XVI Repair Parts continued 120 121 122 123 124 125 126 127...
Page 159: ...159 107774 02 4 18 SERVICE RECORD DATE SERVICE PERFORMED...
