Steam & Water Heating - Page 1

M - MAKE-UP AIR
(100% OUTSIDE AIR)

The M-Make-up Air unit is designed to replace exhausted building air with 100% outside air to prevent the many problems of "air starvation." The replacement air is heated when the outside air is below the desired space air temperature conditions.

Model MA

Single coil having modulating discharge air temperature control of modulating face and by-pass damper, two position valve with mild weather air temperature lockout and inlet air shut-off damper.

Model MB

Double coil having inlet air temperature control of pre-heat coil with two position valve, modulating discharge air temperature control of downstream coil with modulating valve and inlet air shut-off damper.

V - HEATING & VENTILATING
(MIXED OR 100% OUTSIDE AIR)

The V-Heating & Ventilating unit combines the control of both make-up air and space air temperature. This sequence is equally effective for up to 100% of either outside or return air heating and ventilating applications, or 100% outside air only.

Model VA

Single coil having modulating space air temperature and over-riding discharge air temperature control of face and by-pass damper, two position valve with mild weather air temperature lockout and mixed air dampers with manual potentiometer. Inlet air shut-off damper replaces mixing dampers with 100% outside air applications. 

Model VB

Double coil having inlet air temperature control of preheat coil with two position valve, modulating space air temperature and over-riding discharge air temperature control of downstream coil with modulating valve and mixed air dampers with manual potentiometer. Inlet air shut-off damper replaces mixing dampers with 100% outside air applications.

LEGEND