Fan and Heater | FAN PARTS |
|
|
For Units Using
HF-7318 Control Board
2 Deluxe heaters may be connected to one grain drying system and wired so they cycle together. One of the heaters should have a thermostat connected to it as per the installation instructions. That heater will be referred to as the master. The other heater (without the thermostat) will be referred to as the slave.
Installation For
Standard Units
1.Install relay base
2.Connect wire between term 6 on circuit board and terminals 14 on relay base in master heater.
3.Connect wire between term 13 on relay base and terminals 8 on circuit board in master heater.
4.Run 2 wires (18 gage) between master and slave heaters.
5.Connect wires to terminal 5 and 9 (points A and B) on relay base in master heater.
6.Connect wire from terminal 9 in master to terminal 14 (point F) in slave unit.
7.Connect wire from terminal 5 in master to terminal 15 (point E) in slae unit.
8.Install relay
Additional Steps For
Hi-Lo Units
1.Run 2 wires (18 gage) between master and slave unit.
2.Connect wires to terminals 21 and 22 (points C and D) on circuit board in main heater.
3.Connect wire from terminal 21 in master to terminal 12 (point H) in slave unit.
4.Connect wire from terminal 22 in master to terminal 13 (point G) in slave unit.
5.Install relay
Figure 4: The HF-7318 control board.
55
