NOTES:
1. BTUH (heat) is calculated at 180° EWT and highest GPM flow rate.
2. "Flow Control Module" for 18-48MBXB-HW = # 940-3 CV (10 lbs.)"Flow Control Module" for 60MBXB-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
4. Field-convert fan motor to medium speed for 3.5 ton capacity