Johnson Controls VA9204-B-2 Series Installation Manual page 7

VA9204-BGA-2, VA9204-BGB-2, VA9204-BUA-2, VA9204-BUB-2
Mounting the thermal barrier
Figure 16 shows the optional M9000-561 Thermal Barrier.
Figure 16: Optional M9000-561 Thermal Barrier
Machine screws
Barrier
To mount the optional thermal barrier:
1. Install the thermal barrier drive shaft into the thermal barrier
by aligning the tab on the drive shaft with the slot on the
thermal barrier (Figure 17).
Figure 17: Installing the drive shaft into the thermal
barrier
2. Rotate the drive shaft to align marks on the top of the
thermal drive shaft with matching marks on the valve stem.
3. Mount the thermal barrier onto the valve using the four
included M5x16 mm machine screws and four M5 flange
nuts. Tighten the screws to a torque of 21 lb·in. to 25 lb·in.
(2.4 N•m to 2.8 N•m) (Figure 18).
Figure 18: Installing the barrier
Flange
nuts
Drive
shaft
4. Proceed to actuator mounting instructions. Follow the same
steps as mounting directly to the valve when mounting the
actuator to the thermal barrier.
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