Table Of Contents; Contents; Hazard Definitions; Please Read Before Proceeding - Lochinvar Sync Condensing Boiler 1.3 Service Manual

CONTENTS ........................................................................ 2
Hazard Definitions .............................................................. 2
PLEASE READ BEFORE PROCEEDING ......................... 2
Handling Ceramic Fiber Materials ...................................... 3
When servicing boiler ................................................... 3
Boiler operation ............................................................ 3
Boiler water ................................................................... 3
Freeze protection fluids ................................................ 3
WHAT IS IN THIS MANUAL .............................................. 4
1. SERVICE
Near Boiler Piping .............................................................. 5
The SYNC Boiler Display ................................................... 6
Control Inputs ............................................................... 7
Control Outputs ............................................................. 8
General Operation ........................................................ 9
Sequence of Operation .................................................... 10

Hazard definitions

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or
to important information concerning the life of the product.
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious
DANGER
injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious
WARNING
injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
CAUTION
injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not
CAUTION
avoided, may result in property damage.
NOTICE indicates special instructions on installation, operation, or maintenance that are important but not
NOTICE
related to personal injury or property damage.

Please read before proceeding

Installer - Read all instructions, including
WARNING
this manual and the SYNC Installation
and Operation Manual, before installing.
Perform steps in the order given.
User - This manual is for use only by
a qualified heating installer/service
technician. Refer to the SYNC User's
Information Manual for your reference.
Have this boiler serviced/inspected by
a qualified service technician at least
annually.
Failure to comply with the above could
result in severe personal injury, death or
substantial property damage.
2

Contents

Parameter Table.......................................................... 11-12
Viewable and Changeable Control Parameters .......... 13-35
2. MAINTENANCE
Maintenance and Annual Startup ................................ 36-41
3. TROUBLESHOOTING
Alarm Screen.................................................................... 42
Before Troubleshooting .................................................... 43
Check Control Module Fuses .......................................... 43
Table 3A - Troubleshooting Chart - No Display ......... 44
Checking Temperature Sensors ...................................... 45
Table 3E - Troubleshooting Chart - Noisy System ..... 46
Table 3F - Troubleshooting Chart - Fault Messages 47-53
Combustion Analysis Procedure ...................................... 54
Table 3G - Troubleshooting Chart - Combustion Levels 54
Table 3H - Flue Products ........................................... 54
Gas Valve Adjustment Procedure .................................... 55
Revision Notes .................................................. Back Cover
NOTICE
When calling or writing about the boiler
- Please have the boiler model and serial
number from the boiler rating plate.
Consider piping and installation when
determining boiler location (see the SYNC
Installation and Operation Manual).
Any claims for damage or shortage
in shipment must be filed immediately
against the transportation company by the
consignee.