2
TABLE OF CONTENTS
USING THIS MANUAL
3
A. INSTALLATION SEQUENCE . . . . . . . . . . . . .3
B. SPECIAL ATTENTION BOXES . . . . . . . . . . . .3
1. PREINSTALLATION
4
A. ACCESSIBILITY CLEARANCES . . . . . . . . . . .4
B. CLEARANCE FROM COMBUSTIBLE
CONSTRUCTION . . . . . . . . . . . . . . . . . . . . . .4
C. AIR FOR COMBUSTION AND
VENTILATION . . . . . . . . . . . . . . . . . . . . . . . . .5
D. PLANNING THE LAYOUT . . . . . . . . . . . . . . . .8
E. MASSACHUSETTS INSTALLATIONS . . . . . .8
2. BOILER SET-UP
8
3. WATER PIPING AND CONTROLS
9
A. BOILER SUPPLY AND RETURN . . . . . . . . . . .9
B. SAFETY RELIEF VALVE . . . . . . . . . . . . . . . .10
C. PIPING FOR ZONED SYSTEMS . . . . . . . . . .11
D. EXPANSION TANK . . . . . . . . . . . . . . . . . . . .12
E. INDIRECT-FIRED WATER HEATER . . . . . . . .12
F. FREEZE PROTECTION . . . . . . . . . . . . . . . . .12
4. VENTING
13
A. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . .13
B. CHIMNEY VENTING . . . . . . . . . . . . . . . . . . .13
C. DIRECT EXHAUST
HORIZONTAL VENTING- . . . . . . . . . . . . . . .13
D. DIRECT EXHAUST
VERTICAL VENTING . . . . . . . . . . . . . . . . . .16
E. BOILER REMOVAL FROM
COMMON VENTING SYSTEM . . . . . . . . . .17
5. GAS PIPING
18
6.
ELECTRICAL
20
A. WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
B. ZONED SYSTEM WIRING . . . . . . . . . . . . . .20
C. CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . .20
D. BOILER SEQUENCE OF OPERATION . . . . .22
7. START-UP PROCEDURES
22
A. COMPLETING THE INSTALLATION . . . . . . .22
B. CONTROL DESCRIPTIONS . . . . . . . . . . . . .26
C. ADJUSTMENT OF GAS PRESSURE
REGULATOR . . . . . . . . . . . . . . . . . . . . . . . . .26
D. CHECKING BURNER INPUT . . . . . . . . . . . . .26
E. CHECK-OUT PROCEDURE . . . . . . . . . . . . . .27
8. TROUBLESHOOTING
29
A. SHUT-DOWN CAUSED BY PILOT OUTAGE,
PRESSURE SWITCH OR FLAME ROLL-OUT
SAFETY SHUT-OFF SWITCH . . . . . . . . . . . .29
B. TROUBLESHOOTING GUIDES . . . . . . . . . .29
C. MEASURING SUCTION PRESSURE . . . . . .29
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) . . . . . . . . . . . . . . . . . . . . . . . . . . .34
10. BOILER DIMENSIONS & RATINGS
35
11. REPAIR PARTS
36
A. BLOCK/BASE/FLOOR PAN
JACKET/FLUE COLLECTOR . . . . . . . . . . . . .36
B. BASE/BURNERS/MANIFOLD . . . . . . . . . . . .38
TABLE OF CONTENTS
Содержание HVX 175
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