USING THIS MANUAL 1
A. INSTALLATION SEQUENCE . . . . . . . . . . . . . 1
B. SPECIAL ATTENTION BOXES . . . . . . . . . . . . 1
1. PREINSTALLATION 2
A. ACCESSIBILITY CLEARANCES . . . . . . . . . . . 2
B. CLEARANCE FROM COMBUSTIBLE
CONSTRUCTION . . . . . . . . . . . . . . . . . . . . . . 2
C. AIR FOR COMBUSTION &
VENTILATION . . . . . . . . . . . . . . . . . . . . . . . . . 3
D. INSTALLATION SURVEY . . . . . . . . . . . . . . . . 6
E. PLANNING THE LAYOUT . . . . . . . . . . . . . . . 6
F. BOILER WATER TREATMENT . . . . . . . . . . . . 6
2. BOILER SET-UP 7
3. WATER PIPING & CONTROLS 8
A. BOILER SUPPLY & RETURN . . . . . . . . . . . . . 8
B. SAFETY RELIEF VALVE . . . . . . . . . . . . . . . . . 9
C. LOW WATER CUT-OFF . . . . . . . . . . . . . . . . . 9
D. PIPING FOR ZONED SYSTEMS . . . . . . . . . . 10
E. EXPANSION TANK . . . . . . . . . . . . . . . . . . . 11
F. INDIRECT-FIRED WATER HEATER . . . . . . . 11
G. FREEZE PROTECTION . . . . . . . . . . . . . . . . . 11
4. VENTING 12
A. INTEGRAL DRAFT HOOD . . . . . . . . . . . . . . 12
B. VENT DAMPER INSTALLATION –
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
C. VENT PIPING & CHIMNEY . . . . . . . . . . . . . . 13
D. BOILER REMOVAL FROM COMMON
VENTING SYSTEM . . . . . . . . . . . . . . . . . . . . 14
5. GAS PIPING 15
6. ELECTRICAL 17
A. WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
B. ZONED SYSTEM WIRING . . . . . . . . . . . . . . 17
C. CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . 17
D. SEQUENCE OF OPERATION . . . . . . . . . . . . 20
7. START-UP PROCEDURES 21
A. COMPLETING THE INSTALLATION . . . . . . 21
B. CONTROL DESCRIPTIONS . . . . . . . . . . . . . 26
C. ADJUSTMENT OF GAS PRESSURE
REGULATOR . . . . . . . . . . . . . . . . . . . . . . . . 26
D. CHECKING BURNER INPUT . . . . . . . . . . . . . 26
E. AIR SHUTTERS . . . . . . . . . . . . . . . . . . . . . . 27
F. CHECK-OUT PROCEDURE . . . . . . . . . . . . . . 27
8. TROUBLESHOOTING 30
A. SHUT-DOWN CAUSED BY PILOT OUTAGE,
BLOCKED VENT SHUT-OFF SWITCH OR
FLAME ROLL-OUT SAFETY SHUT-OFF
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
B. TROUBLESHOOTING GUIDES . . . . . . . . . . 30
9. MAINTENANCE 32
A. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
B. DAILY (WITH BOILER IN USE) . . . . . . . . . . 33
C. WEEKLY (WITH BOILER IN USE) . . . . . . . . 33
D. MONTHLY (WITH BOILER IN USE) . . . . . . . 33
E. ANNUALLY (BEFORE START OF HEATING
SEASON) . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
10. BOILER DIMENSIONS & RATINGS 35
11. REPAIR PARTS 36
A. BOILER PARTS . . . . . . . . . . . . . . . . . . . . . . . 36
B. MANIFOLD, GAS VALVE & PILOT . . . . . . . . 38
C. CONTROLS/CIRCULATOR/
VENT DAMPER . . . . . . . . . . . . . . . . . . . . . . 40
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