23
EKW FX10 INSTALLATION MANUAL
Unit Startup
Before Powering Unit
Check the following:
High voltage wiring is correct and matches the nameplate.
•
Fuses, breakers and wire size are correct.
•
Piping is completed and water system has been cleaned and flushed.
•
Air is purged from the closed loop system.
•
Isolation valves are open and loop water control valves or loop pumps are wired.
•
Service/access panels are in place.
•
Primary Unit Startup
Apply power to the unit. Upon power up, the unit will display the current operation mode.
1.
Press the mode button. The LED screen will display the current entering water temperature. The load pump will activate
2.
after a 5 minute delay. Adjust mode operation as desired by reference to MUI menu configuration on page 21.
Once the load pump system has been active for 35 minutes, the controller will sample the temperature of the water sys-
3.
tem. In heating mode, when the temperature of the water shown on the display is lower than the set point the compres-
sor will activate check the system operation as shown in steps 4 through 7..
By using a pressure gauge and the P/T ports, check the pressure drop through both the load and source coaxes. Com-
4.
pare this to the capacity tables in the specification catalog to verify the proper flow rate through the unit.
Verify that the compressor, load side and source side pumps are operating.
5.
After determining the flow rates, use a thermometer and the PT ports to determine the change in temperature on both
6.
the load and source side coaxes.
Compute the formula
7.
L/s x ∆t x 4.1 (antifreeze/water). use 4.2 for 100% water. = heat of extraction on the
source side in heating, heat of rejection on the source side in cooling
. To ensure proper operation, compare
these values to the capacity tables in the specification catalog.
Reduce the set point below the incoming load temperature. Compressor should shut off and the load pump should shut
8.
off 30 seconds after the compressor.
Secondary Unit Startup
Apply power to the unit.
1.
Follow guidelines as outlined above. After a three to five-minute delay, the water temperature shall be sampled. If the
2.
controller receives a remote aquastat signal, the compressor shall activate.
Verify that the compressor and load side, source side pumps are running.
3.
By using a pressure gauge and the PT ports, check the pressure drop through both the load and source coaxes, and
4.
compare this to the capacity tables in the specification catalog to verify the proper flow rate through the unit.
After determining the flow rates, use a thermometer and the PT ports to determine the change in temperature on both
5.
the load and source side coaxes.
Compute the formula
6.
L/s x ∆t x 4.1 (antifreeze/water). use 4.2 for 100% water. = heat of extraction on the source
side in heating, heat of rejection on the source side in cooling.
To ensure proper operation, compare these values
to the capacity tables in the specification catalog.
Press the down arrow on the control to disrupt the remote aquastat signal. Unit should shut off.
7.
Instruct the owner or operator about the correct control and system operation.
8.
