Owner`s manual

Hydro-Hot Hydronic Heating System Shop Manual 07/03
R
Section 8: Diesel-Burner Service, Maintenance, and Repair Information
Page 68
Control Unit,
continue
d
NOTE: Be sure to reconnect the VDC High Limit Thermostat's 2-way
male plug to the 6-way female plug. The Diesel-Burner will not ignite
during normal operation if the VDC High-Limit Thermostat is left discon-
nected.
CAUTION: Be
sure to remove the jumper wire that was used to make
the connection from the C-1 location to the C-7 location. A failure to do
so will result in an overheating condition during normal operation.
Cleaning Tips / Maintenance: N/A
Adjustment Procedure: N/A
Replacement Procedure:
1. Remove both the B-Plug and C-Plug from the Control Unit, refer-
ence Figure 8. Gently pry away each side of the Control Unit
Bracket from the Control Unit's locking posts with a flat-head screw
driver. Once the locking posts have been released, pull on the
Control Unit to remove it from the Diesel-Burner Head.
2. Slide the new Control Unit into the Control Unit Bracket, reference
Figure 27. Push down on the Control Unit until the locking posts
snap into the bracket slots. Reinstall both the B-Plug and C-Plug.
NOTE: Be sure to install the Control Unit with it's C-Plug and B-Plug
ports facing downward. Failure to do so, will result in moisture collecting
in the ports and potential damage to the Control Unit's internal circuitry,
reference Figure 27.