LCD Series Finned Copper Tube Gas Boilers & Water Heaters – Boiler Manual
20
H-18 Rev 3
NOTES:
1. For pump selection consult factory.
2. Boiler pump sized to boiler and
thermostatic 3-way valve design flow
requirements.
3. Boiler circuit piping must be sized
large enough to handle maximum
flow through unit.
4. All boilers furnished with factory
mounted outlet water temperature
gauge.
5. Boiler pump purging required. Use
terminals supplied.
6. Valve is precalibrated for 140°F
return temperature.
Notice: These drawings show
suggested piping configuration and
valving. Check with local codes and
ordinances for specific requirements.
H-15 Rev 5
NOTES:
1. Boiler circuit piping must be sized large enough to handle
maximum flow through unit.
2. Boiler pump sized to boiler design flow requirements.
3. All boilers furnished with factory mounted outlet water
temperature gauge.
4. Boiler pump purging required. Use terminals supplied.
5. Secondary loop pipe diameter must be sized large enough to
handle maximum flow through all units.
Notice: These drawings show suggested piping configuration and valving.
Check with local codes and ordinances for specific requirements.
Figure 12A
Low temperature piping with thermostatic valve
(See notes and adjustment procedures)
Figure 13
Multiple Boiler Piping
(See Notes)
Operated Valve
Air Vent
Pressure Switch
Aquastat Union
Gas Pressure
Regulator
Automatic
Thermometer
Flow Switch
Pressure
Relief Valve
Reducing Valve
Self-Operated
Check Valve
Pressure
Valve
Pump
Motorized Valve
Solenoid
Ball Valve
Bufferfly Valve
Angle Valve
Gate Valve
Globe Valve
Balance Valve
Backflow-
Prevention
Device
3-Way Valve
Expansion
Tank
