RBI Spectrum series Installation And Operation Instructions Manual page 16

Typical Water Heating Piping (MW Models Only)
Figure 8
(See Notes)
3
8
Multiple Water Heating Piping (MW Models Only)
Figure 9
(See Notes)
SELF BALANCING DOUBLE REVERSE
RETURN MAKE-UP & SUPPLY, CIRCULATION
6
1
7
2
NOTES:
1. Optional cold water make up and recirculation line location.
2. When using intermittent pump and pump delay, locate remote aquastat well in lower 1/3 of tank. Install aquastat with heat sensing compound.
3. Thermal expansion tank may be required, check local codes.
4. When using optional factory mounted pump, max pipe length 30 ft total, 6-90° elbows, full pipe size.
5. CAUTION: MEASURE WATER HARDNESS AND pH AT JOB SITE.
The pH and water hardness must be measured before selecting heat exchanger and pump. Consult the Heat Exchanger Graph and
Pumping Performance Table before making selection.
6. Common piping must be sized for maximum combined heater flow.
7. Hot water tanks should be equipped with a combination temperature & pressure relief valve.
8. MA Code requires an 1/8 in hole in check valve to compensate for thermal expansion.
Notice: These drawings show suggested piping configuration and valving.
Check with local codes and ordinances for specific requirements.
16
Finned copper tube gas boilers & water heaters – Boiler Manual
1
4
7
2
Not all RBI stock storage tanks
incorporate this tapping: See Note 1.
4
3
8
7
2
Not all RBI stock storage tanks
incorporate this tapping: See Note 1.
D-1 Rev 6
Attention:
4
D-4 Rev 6
6
Attention:
Pump
Valve
Globe Valve
Angle Valve
Bufferfly Valve
Balance Valve
Ball Valve
Motorized Valve
Solenoid
Operated Valve
Self-Operated
Valve
Pressure
Reducing Valve
Check Valve
Pressure
Relief Valve
Flow Switch
Thermometer
Aquastat Union
Pressure Switch
Gas Pressure
Regulator
Automatic
Air Vent
Temperature &
Pressure
Relief Valve
Vacuum
Relief Valve
Drain Valve
(Typ.)