EVO Direct Mount Operator

Overview

EVO-28 Direct Mount Operator

The Macon EVO thermostatic operator will help you balance your heating system. The EVO operator has one of the most accurate sensors available for radiator temperature control. The problems of overheating, under-heating and wide temperature swings can now be minimized.

The EVO thermostatic operator by Macon Controls conserves energy by regulating temperature. Fuel costs can be reduced up to 30%!

The EVO is a self-acting, adjustable, non-electric
thermostatic operator. It has adjustable max./min. temperature, selected temperature locking feature and can be shutoff completely if required.
The symbol * protects against frost damage. Each EVO thermostatic operator is individually calibrated and conforms to ASHRAE standardization rules for temperature regulation. The EVO’s smooth shape and narrow air gaps gives a nice operation and makes it easy to keep clean. They can be mounted on all Macon NT series valves. Millions are in use throughout the world.

 

 

Specifications

DATA:
Temp. Range: 50° – 82°F
Hystersis: 0.9°F
Heat Transfer: 1.1°F (Valve Housing Sensor)
Dead Time: 0.8 Minutes
Max. Differential Pressure: 20 psi
Suggested Differential Pressure = 0.5 to 2.9 psi
Max. Water Temp.: 250°F
Max. Storage & Ambient Temp.: 122°F
Max. Steam Pressure: 15 psig
Max. Movement: 0.125 inches
Nominal Opening: 0.018 (3.6°F)
Long Term Test: 5000 cycles (1.3°F)
Width (A) = 1.73″
Height (B) = 3.66″
DIAL SETTINGS:
0 = Off
* = 50°F (Frost Protection)
1 = 54°F
3 = 61°F
5 = 68°F
6 = 72°F
7 = 75°F
8 = 79°F
9 = 82°F

Min/Max Settings

Each unit is factory preset per the dial settings listed. If field adjustments are necessary see below.

Maximum setting
1. Turn the wheel to maximum.
2. Push the mark in with limit tool (located opposite the dial setting window) and press in the wheel handle 1-2 mm until it stops.
3. Remove the limit tool and press in the wheel handle until it stops.
4. Set the required temperature according to the chart above.
5. Pull the wheel handle out and the maximum temperature is set.

Minimum setting
1. Turn the wheel to minimum
2. Push the mark in with limit tool (located opposite the dial setting window) and press in the wheel handle 1-2 mm until it stops.
3. Remove the limit tool and press in the wheel handle until it stops.
4. Set the required temperature according to the chart above.
5. Pull the wheel handle out and the minimum temperature is set.

Click Here for Cross Reference chart of Previous Generations of Non-Electric Operators

BULLETIN: EVO-28-1015 – Direct Mount Operator – EVO