Table of Contents
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This manual is intended only for use by a qualified heating installer/technician. Read and follow this manual, all supplements and related
instructional information provided with the boiler. Install, start and service the boiler only in the sequence and methods given in these
instructions. Failure to do so can result in severe personal injury, death or substantial property damage.
Do not use the boiler during construction. Construction dust and particulate, particularly drywall dust, will cause contamination of
the burner, resulting in possible severe personal injury, death or substantial property damage. The boiler can only be operated with a dust-
free air supply. Follow the instruction manual procedures to duct air to the boiler air intake. If the boiler has been contaminated by operation
with contaminated air, follow the instruction manual guidelines to clean, repair or replace the boiler if necessary.
Affix these instructions near to the boiler/water heater. Instruct the building owner to retain the instructions for future use by a qualified
service technician, and to follow all guidelines in the User's Information Manual.
GSX
Gas-fired residental steam
boilers
Models 88-288
Boiler manual
Installation and
operation instructions
GSXIOM-1
00-GSXIOM
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Table of Contents
Related Manuals for Smith 147
Summarization of Contents
1. PREINSTALLATION
GENERAL
Boiler is assembled, inspect for damage. Install by qualified contractor.
CODES & REGULATIONS
Work according to local codes, NFPA, ASME standards.
ACCESSIBILITY CLEARANCES
Provide adequate access for servicing and burner.
CLEARANCES FROM COMBUSTIBLE CONSTRUCTION
Boiler certified for alcove installation with specific clearances.
AIR FOR COMBUSTION AND VENTILATION
Provide adequate combustion air and ventilation air in accordance with National Fuel Gas Code.
2. BOILER PLACEMENT & ASSEMBLY
PACKAGED BOILER
Remove crate, lift boiler, move to location.
3. VENTING
CHIMNEY OR VENT
Inspect and ensure vent system is in good condition and sized correctly.
AUTOMATIC VENT DAMPER INSTALLATION - GENERAL
Do not use one damper for multiple appliances. Follow manufacturer instructions.
BOILER REMOVAL FROM COMMON VENTING SYSTEM
Steps to follow when removing boiler from a shared vent system.
4. BOILER PIPING
STEAM BOILER PIPING - SINGLE BOILERS
Install steam supply pipes per figure and table. Use threaded fittings.
STEAM BOILER INDIRECT WATER HEATER PIPING
Install controls, circulator, strainer. Maintain water level.
5. FUEL PIPING
INSTALLATION
Pipe gas according to local codes, NFPA. Size for maximum demand.
OPERATION
Ensure supply pressure, install service valve, check for leaks.
6. CONTROLS & TRIM
STEAM BOILER CONTROLS & TRIM
Install safety valve, pipe discharge. Check connections.
7. ELECTRICAL
CONNECT SUPPLY WIRING
Wire according to local codes, NEC. Bond boiler to ground.
INSTALL CONTROL WIRING
Install line voltage wiring in conduit. Avoid neutral leg for switches.
8. BOILER OPERATION
SYSTEM INSPECTION
Confirm power off, inspect chamber, burners, piping, wiring.
FILL THE BOILER
Fill to normal water line for gravity or pumped systems.
RUN PILOT CHECK-OUT
Perform checks on pilot ignition and main burner ignition.
CHECK MAIN BURNER SYSTEM
Check gas pressure, manifold pressure, burner flames.
CHECK BOILER CONTROLS
Test limit and operating controls, low water cut-off, safety shut-off.
CLEAN THE BOILER
Clean boiler to remove impurities, prevent foaming and surging.
TO SHUT DOWN THE BOILER
Procedures for shutting down the boiler for service or storage.
FOR YOUR SAFETY READ BEFORE LIGHTING
LIGHTING INSTRUCTIONS
Step-by-step instructions for lighting a standing pilot system.
TO TURN OFF GAS TO APPLIANCE
Steps to turn off gas supply for safety.
OPERATING INSTRUCTIONS
Step-by-step instructions for lighting a spark ignition system.
TO TURN OFF GAS TO APPLIANCE
Steps to turn off gas supply for safety.
9. MAINTENANCE
GENERAL
Disconnect power, insulate pipes, flush boiler if needed.
DAILY MAINTENANCE (WITH BOILER OPERATING)
Observe boiler conditions, check for obstructions, smell for gas.
MONTHLY MAINTENANCE (WITH BOILER OPERATING)
Check drains, safety valve, controls, vent damper.
ANNUAL MAINTENANCE (BEFORE START OF HEATING SEASON)
Clean burners/flueways, inspect venting, check flames.
10. TROUBLESHOOTING – SERVICE TIPS
Pilot Outage
Common causes and remedies for pilot failure.
Main Gas Valve Will Not Open (Spark Ignited Pilot)
Troubleshooting steps for spark-ignited pilot valve issues.
Main Gas Valve Will Not Open (Standing Pilot)
Troubleshooting steps for standing pilot valve issues.
Burner(s) Burning with Yellow Flame
Causes and solutions for yellow burner flames.
Gas Spillage from Draft Hood Relief Opening
Diagnosing and fixing gas spillage issues.
Water Hammer During Mid-Cycle
Causes and remedies for water hammer during operation.
System or Boiler Overfilling or Flooding
Identifying and resolving issues causing overfilling or flooding.
11. BOILER DIMENSIONS & RATINGS
Dimensions and Tapping Locations
Diagram showing boiler dimensions and connection tapping points.
Tapping Sizes & Functions
Table detailing the size and purpose of each tapping point.
Boiler Ratings
Table of boiler model, input, capacity, and efficiency ratings.
12. REPAIR PARTS
Exploded View Diagram
Visual guide to boiler components for repair part identification.
STEAM WARRANTY
LIMITED WARRANTY FOR RESIDENTIAL CAST IRON HEATING BOILERS
Defines warranty terms for cast iron boiler sections.
EXCEPTIONS AND EXCLUSIONS
Lists conditions not covered by the boiler warranty.
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