Contents
HAZARD DEFINITIONS | . 2 | 5. ELECTRICAL CONNECTIONS |
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PLEASE READ BEFORE PROCEEDING | . | Boiler Operating Temperature Control | 34 |
RATINGS | . 5 | Room Thermostat or Remote Thermostat Connection . . 34 | |
THE SOLUTION | . | Auxiliary Device Connection to Terminal Strip | 34 |
1. DETERMINE BOILER LOCATION |
| Pump Wiring for a Heating Boiler | 35 |
Location of Unit | . 9 | Temperature Adjustment | 35 |
Clearances | . 9 | Temperature Control Settings | 35 |
Combustion and Ventilation Air | Maximum Set Point Determination | 36 | |
2. VENTING |
| Outdoor Air Reset Option | 38 |
A Conventional Negative Draft Venting System | Additional Temperature Controls | 38 | |
Vertical Vent Termination Clearances | 15 | Blocked Vent and Flame | |
Masonry Chimney Installation | 16 | 6. STARTUP |
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Inspection of a Masonry Chimney | 16 | Initial Startup | 40 |
Automatic Vent Damper | 17 | Lighting Instructions for Spark Ignition Pilot Models (M9) . . . . | 40 |
3. GAS CONNECTIONS |
| Safety Shutoff Test for Spark Ignition Pilot System | 41 |
Gas Supply | 18 | Intermittent Pilot Spark Ignition System (M9) | 42 |
Gas Pressure Test | 18 | Freeze Protection | 42 |
Gas Connection | 18 | Water Treatment | 42 |
Gas Piping | 19 | 7. MAINTENANCE |
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Gas Manifold Pressure Adjustment Procedure | 20 | Maintenance and Annual Startup | |
Checking Gas Supply Pressure | 21 | 8. TROUBLESHOOTING | 49 |
Combination Gas Valves | 22 | 9. DIAGRAMS | 50 |
4. WATER CONNECTIONS |
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Relief Valve | 23 |
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Water Flow Switch (if equipped) | 23 |
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Low Water Cutoff (if equipped) | 24 |
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Typical Heating Boiler Installations |
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Piping of the Boiler System | 25 |
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Performance Loop | 27 |
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Primary/Secondary Boiler Piping |
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Low Temperature Bypass Requirements | 28 |
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Boiler Flow Rates | 28 |
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Primary / Secondary Piping |
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Full System Flow |
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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
WARNING
CAUTION
CAUTION
NOTICE
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.
NOTICE indicates special instructions on installation, operation, or maintenance that are important but not related to personal injury or property damage.
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