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Lochinvar
50-210 service manual Control outputs, 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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Image 9
Service Manual
1
Service
(continued)
Control outputs
9
Page 8
Page 10
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Contents
Models 50
Service Manual
Hazard definitions
DANGER
Contents
Handling ceramic fiber materials
Please read before proceeding
Service Manual
REMOVAL OF COMBUSTION CHAMBER LINING
Boiler operation
When servicing boiler
Boiler water
Freeze protection fluids
Service
What is in this manual?
Maintenance
Troubleshooting
1 Service
Near boiler piping
Service Manual
The Knight wall mount display
Service Manual
1 Service continued
1 Service
Control inputs
Service Manual
GAS PRESSURE SWITCH DHW THERMOSTAT ROOM THERMOSTAT ZONE CONTROL
Control outputs
Service Manual
1 Service continued
1 Service
General Operation
Service Manual
Installer
Sequence of operation
OPERATION
DISPLAY
1 Service
Sequence of operation continued
Service Manual
OPERATION
Service Manual
Display panel menu access
Table 1B Use this procedure to access menus from the display panel
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
1 Service
Viewable and changeable control parameters
B Temperature settings
A General
E DHW settings
1 Service
F Outdoor air reset
C Data logging
Figure 1-1 Outdoor Air Reset Curve
Service Manual
Shift reset curve
Maximum SH set point
Service Manual
1 Service
Boost temperature
Inlet temperature differential for ending anti-cycling
Figure 1-2 Ramp Delay Interval
Service Manual
H Control modes
SH controlling sensor
Service Manual
1 Service
J Service Notification
Cascade offset
Service technician
2 Maintenance Maintenance and annual startup
Owner maintenance
see the following pages for instructions General
Address reported problems
2 Maintenance
Clean condensate trap
Inspect boiler area
Flue vent system and air piping
2 Maintenance continued
Check water system
Check expansion tank
Check all boiler wiring
Check ignition ground wiring
Check control settings
Inspect ignition and flame sense electrodes
Cleaning boiler heat exchanger
Check flame signal
Review with owner
Oiled bearing circulators
Before troubleshooting
3 Troubleshooting
Check control module fuses
Check the following
FAULT
3 Troubleshooting continued
CAUSE
CORRECTIVE ACTION
3 Troubleshooting
Checking temperature sensors
Service Manual
Table 3B - Inlet/Outlet System Sensor Resistance vs. Temperature
FAULT
3 Troubleshooting continued
Service Manual
Table 3E Troubleshooting Chart - Noisy System
3 Troubleshooting
DESCRIPTION
FAULT
Switch/LWCO
FAULT
3 Troubleshooting continued
Service Manual
DESCRIPTION
FAULT
3 Troubleshooting
Service Manual
DESCRIPTION
FAULT
3 Troubleshooting continued
Auto Reset
DESCRIPTION
FAULT
3 Troubleshooting
Service Manual
DESCRIPTION
FAULT
3 Troubleshooting continued
Service Manual
DESCRIPTION
FAULT
3 Troubleshooting
Service Manual
DESCRIPTION
FAULT
3 Troubleshooting continued
Service Manual
Service Blk
POSSIBLE CAUSE
Combustion Analysis Procedure
3 Troubleshooting
Service Manual
3 Troubleshooting continued
Gas valve adjustment procedure
Service Manual
Figure 3-2 Gas Valve Adjustment
Service Manual
4 Notes
4 Notes
Service Manual
WB-SER-Rev C 11/08
