RBI Dominator Series Installation & Operating Instructions Manual page 21

Typical Water Heating Piping (DW Models only)
Figure 14
(See Notes)
3
8
Multiple Water Heating Piping (DW Models only)
Figure 15
(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' 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 fl ow.
7. Hot water tanks should be equipped with a combination temperature & pressure relief valve.
8. MA Code requires an 1/8" hole in check valve to compensate for thermal expansion.
Notice: These drawings show suggested piping confi guration and valving.
Check with local codes and ordinances for specifi c requirements.
F F Finned copper tube gas boilers & water heaters – Boiler Manual Fi d b b il
1
4
7
2
Attention:
Not all RBI stock storage tanks
incorporate this tapping: See Note 1.
4
3
8
7
2
6
Not all RBI stock storage tanks
incorporate this tapping: See Note 1.
& h B il
D-1 Rev 6
4
D-4 Rev 6
Attention:
M l
Pump
Pressure
Relief Valve
Valve
Flow Switch
Globe Valve
Thermometer
Angle Valve
Bufferfly Valve
Aquastat Union
Balance Valve
Pressure Switch
Ball Valve
Gas Pressure
Regulator
Motorized Valve
Automatic
Air Vent
Solenoid
Operated Valve
Temperature &
Pressure
Relief Valve
Self-Operated
Valve
Vacuum
Relief Valve
Pressure
Reducing Valve
Check Valve
Drain Valve
21
(Typ.)