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50-210 service manual The Knight wall mount display, Service Manual, Service continued
Models:
50-210
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Troubleshooting
Install
Maintenance
Check ignition ground wiring
Address reported problems
F Outdoor air reset
B Use this procedure to access menus from the display panel
Fault
Ramp delay on/off
Check flame signal
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Service Manual
1
Service
(continued)
The Knight wall mount display
7
Page 6
Page 8
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Page 8
Contents
Models 50
Service Manual
DANGER
Hazard definitions
Contents
REMOVAL OF COMBUSTION CHAMBER LINING
Please read before proceeding
Handling ceramic fiber materials
Service Manual
Freeze protection fluids
When servicing boiler
Boiler operation
Boiler water
Troubleshooting
What is in this manual?
Service
Maintenance
Near boiler piping
1 Service
Service Manual
Service Manual
The Knight wall mount display
1 Service continued
GAS PRESSURE SWITCH DHW THERMOSTAT ROOM THERMOSTAT ZONE CONTROL
Control inputs
1 Service
Service Manual
Service Manual
Control outputs
1 Service continued
Installer
General Operation
1 Service
Service Manual
OPERATION
Sequence of operation
DISPLAY
OPERATION
Sequence of operation continued
1 Service
Service Manual
1 Service continued
Display panel menu access
Service Manual
Table 1B Use this procedure to access menus from the display panel
1 Service
Display panel parameter access
Service Manual
Service Manual
Parameter table
1 Service continued
1 Service
Parameter table continued
Service Manual
A General
Viewable and changeable control parameters
1 Service
B Temperature settings
C Data logging
1 Service
E DHW settings
F Outdoor air reset
Maximum SH set point
Service Manual
Figure 1-1 Outdoor Air Reset Curve
Shift reset curve
Inlet temperature differential for ending anti-cycling
1 Service
Service Manual
Boost temperature
SH controlling sensor
Service Manual
Figure 1-2 Ramp Delay Interval
H Control modes
Cascade offset
1 Service
Service Manual
J Service Notification
see the following pages for instructions General
2 Maintenance Maintenance and annual startup
Service technician
Owner maintenance
Inspect boiler area
2 Maintenance
Address reported problems
Clean condensate trap
Check expansion tank
2 Maintenance continued
Flue vent system and air piping
Check water system
Inspect ignition and flame sense electrodes
Check ignition ground wiring
Check all boiler wiring
Check control settings
Oiled bearing circulators
Check flame signal
Cleaning boiler heat exchanger
Review with owner
Check the following
3 Troubleshooting
Before troubleshooting
Check control module fuses
CORRECTIVE ACTION
3 Troubleshooting continued
FAULT
CAUSE
Table 3B - Inlet/Outlet System Sensor Resistance vs. Temperature
Checking temperature sensors
3 Troubleshooting
Service Manual
Table 3E Troubleshooting Chart - Noisy System
3 Troubleshooting continued
FAULT
Service Manual
Switch/LWCO
DESCRIPTION
3 Troubleshooting
FAULT
DESCRIPTION
3 Troubleshooting continued
FAULT
Service Manual
DESCRIPTION
3 Troubleshooting
FAULT
Service Manual
DESCRIPTION
3 Troubleshooting continued
FAULT
Auto Reset
DESCRIPTION
3 Troubleshooting
FAULT
Service Manual
DESCRIPTION
3 Troubleshooting continued
FAULT
Service Manual
DESCRIPTION
3 Troubleshooting
FAULT
Service Manual
Service Blk
3 Troubleshooting continued
FAULT
Service Manual
Service Manual
Combustion Analysis Procedure
POSSIBLE CAUSE
3 Troubleshooting
Figure 3-2 Gas Valve Adjustment
Gas valve adjustment procedure
3 Troubleshooting continued
Service Manual
Service Manual
4 Notes
4 Notes
Service Manual
WB-SER-Rev C 11/08
