Grain Systems PNEG-634 - Manual (Page 19)

3. Installation
PNEG-634 2000 Top Dry Fan/Heater 19
Drying Chamber Overflow Rotary Switch
1. Drill a 2" diameter hole through the roof panel at the location shown in Figure 3L on Page 20 .
2. Use the mounting plate as a pattern and drill four (4) 3/8" holes through the roof panel at the switch
location so the plate can be bolted to the roof.
3. Attach the flex coupling to the rotary switch power pack using a roll pin.
4. Apply teflon tape or pipe sealant (not included) to the rotary switch power pack threads and thread
the rotary switch power pack into the mounting plate coupling.
5. Make sure the conduit hole is at right angles with the roof panel ribs or facing toward the eave.
6. Caulk the underside of the mounting plate and on all sides of the 2" hole.
7. Bolt the assembly to the roof panel.
8. Attach the 3 vane paddle to the flex coupling as shown in Figure 3M on Page 20 .
Figure 3K Drying Chamber Overflow Rotary Switch