Finned copper tube gas boilers & water heaters – Boiler Manual
16
Figure 11
Typical Primary/Secondary Piping
(See Notes)
Figure 12
Low Temperature Piping with Thermostatic Valve
(See Notes)
H-1 Rev 4
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.
Notice: These drawings show suggested pip-
ing configuration and valving.
Check with local codes and ordinances for
specific requirements.
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.
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
