NOTES:
1. BTUH (heat) is calculated at 180 degree EWT and highest GPM flow rate.
2. "Flow Control Module" for 18-48VHBXB-HW = # 940-3 CV (10 lbs.)"Flow Control Module" for 60VHBXB-HW = # 940-2 CV (12 lbs.)
3. Freeze protector (field installed) - turns pump on when heating coil temperature drops below 38 degrees. Order part #941-1