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