Commissioning The Pump Vfd; Preparation - Power On - York YLAA0041 Manual

SECTION 6 – COMMISSIONING
Sporlan EEV Interface Board
Verify the jumper and dip switch settings, Figure 36
on page 113, during a chiller start-up for YLAA and
YCWL chillers with Sporlan Electronic Expansion
Valves.
With the IB-G unpowered, select the input signal of 0
V to 10 V by installing the supplied jumper to number
1 of the 5 pin locations shown in the left hand side of
EEV board. Set numbers 1 to 3 of the DIP switches in
accordance with the unit models. Set numbers 4 to 8 in
accordance with the table shown in Figure 36 on page
113. For YLAA and YCWL chillers, DIP switch num-
ber 6 must be set to ON for a quicker EEV response.
F/ Protection
Verify all sources of electrical supply to the unit are
taken from a single point of isolation. Check that the
maximum recommended fuse sizes given in SECTION
5 – TECHNICAL DATA has not been exceeded.
PREPARATION – POWER ON
Perform the commissioning using the de-
tailed checks outlined. Refer to the Equip-
ment Pre-Startup And Startup Checklist
(Form 150.72-CL1) as the commissioning
procedure is carried out.
Apply power to the chiller. Turn on the option panel
circuit breaker if supplied.
The machine is now live!
Low Switch
Verify a chilled water flow switch is correctly fitted in
the customer's piping on the cooler outlet, and wired
into the control panel correctly using shielded cable.
There should be a straight run of at least 5 pipe diam-
eters on either side of the flow switch. The flow switch
should be connected to terminals 13 and 14 of XTBC1
on the panel.
114

COMMISSIONING THE PUMP VFD

1. Put pump in HAND mode.
2. Change parameter 0-20 (default value is option
1601 – "Reference [Unit]") to option 1850 "Sen-
sorless Readout" to display Sensorless flow read-
out on top left corner of screen.
3. Change parameter 0-22 (default value is option
1610 – "Power [kW]") to option 1654 "Feedback
1 [unit]" to display Sensorless pressure readout on
top right corner of screen.
4. Check with customer regarding new actual flow
and head and verify what flow is required. Ramp
the pump up or down to achieve requested flow.
Record the VFD sensorless flow and pressure –
this will be your new setpoint.
5. Set parameter 20-21 to the Sensorless Pressure
readout taken in the previous step.
FORM 150.72-ICOM6
ISSUE DATE: 08/03/2022
LD18418
LD18419
LD18420
JOHNSON CONTROLS