McQuay MCW 200 C Instruction Manual page 38

Valve Actuator installation
Latch the manual operating lever in the engaged position (N.C. only).
Depress the release button (See Figure 19). Align the body with the actuator to ensure the stem is inserted
into the large mating hole on the bottom side of the actuator. Engage the actuator on the body and release
the button. Actuator AG2 is used or normally open operation. Actuator AG1 is used for normally closed
operation.
Mounting
TM
The PopTop valve can be mounted vertically or horizontally. If mounted horizontally, the valve should be
mounted within 90°of upright position (See Figure 20). If mounted vertically, care should be taken to ensure
moisture does not drip onto motor. The valve actuator should not be mounted upside down.
Release
Button
Room Thermostats
The RAB10... room thermostat is used in heating or cooling systems to maintain the selected room
temperature.
Functions
Heating If the room temperature falls below the selected set point, the heating contact will close.
Cooling If the room temperature exceeds the selected set point, the cooling contact will close.
Fan speed There are two possibilities to control the fan speed:
a) Manually by means of the three-speed fan switch on the thermostat for continuous
operation.
b) Automatically by switching to the selected fan speed via the thermostat for controlled
operation. In that case - prior to commissioning - the thermostat function must be
changed. There are two choices available:
Manual
Operating
Lever
Mating Hole
Stem
Figure 19
Figure 19
Selected fan speed as continuous operation
Fan is switched at the same time as the valve
Auto
Upside Down
Page 37
°
Vertical
Figure 20