Unit Startup - York YAFS012 Installation Manual

AFFINITY SINGLE & DUAL CAPACITY SERIES INSTALLATION MANUAL

Unit Startup

Before Powering Unit, Check the Following:
NOTE: Remove and discard the compressor hold down shipping bolt
located at the front of the compressor mounting bracket.
• High voltage is correct and matches nameplate.
• Fuses, breakers and wire size correct.
• Low voltage wiring complete.
• Piping completed and water system cleaned and flushed.
• Air is purged from closed loop system.
• Isolation valves are open, water control valves or loop
pumps wired.
• Condensate line open and correctly pitched.
• Transformer switched to 208V if applicable.
• Black/white and gray/white wires in unit control box have been
removed if auxiliary heat has been installed.
• Dip switches are set correctly.
• Hot water generator pump switch is "OFF" unless piping is
completed and air has been purged.
• Blower rotates freely.
• Blower speed is correct.
• Air filter/cleaner is clean and in position.
• Service/access panels are in place.
• Return air temperature is between 50-80°F heating and
60-95°F cooling.
• Check air coil cleanliness to ensure optimum performance.
Clean as needed according to maintenance guidelines. To
obtain maximum performance the air coil should be cleaned
before startup. A 10% solution of dishwasher detergent and
water is recommended for both sides of coil, a thorough water
rinse should follow.
Powering The Controls
Initial Configuration of the Unit
Before operating the unit, apply power and complete the following
Aurora Startup procedure for the controls configuration. An AID
Tool is recommended for setup, configuration and troubleshooting,
especially with an Aurora 'Advanced' Control. AID Tool version
2.01 or greater is preferred.
1. Configure Aurora Screen
a. In advanced controls - Confirm AXB is added
and communicating.
b. In advanced controls - Confirm communicating
thermostats are added and communicating. Set
thermostat mode to off.
c. In advanced controls - Confirm IntelliZone2, if
installed, is added and communicating. Set Zoning
system to off mode.
2. Aurora Setup Screen
a. ECM Setup for Heating Airflow – select "G", low,
high and aux blower speeds as appropriate for the
unit and electric heat.
b. Cooling Airflow % - sets the cooling airflow % from
heating airflow.
c. AXB Setup
i. DHW Enable – Ensure air is purged from
HW system before enabling (remember
the HW switch on the front cabinet)
ii. DHW Setpoint – 130 °F is the default
but can be changed from 100 to 140 °F
iii. Variable Speed Pump Setup
and Modulating Water Valve Setup – Can
be setup to a range between 5% and
100%. Defaults are 75% and 100%.
- From the Main Menu of the AID Tool go
to AXB Setup and select "Yes" at the
bottom of the screen to Make Changes
- Set VS Pump Control to MIN
- The pump(s) or water valve should
begin to operate and flow rate is visible
on this screen, it may take several
seconds for flow to stabilize. Adjust the
minimum % until the minimum flow rate
is achieved.
- Go back to Set VS Pump Control and
select MAX.
- The pump(s) or water valve should
begin to operate and flow rate is visible
on this screen, it may take several
seconds for flow to stabilize. Adjust the
maximum % until the maximum flow
rate is achieved.
- Press Enter.
d. Sensor Kit Setup
i. Brine Selection – for HE/HR
capacity calculation
ii. Flow Meter – activates the flow meter
iii. Select blower energy – PSC or
ECM/5-Speed ECM
iv. Activate energy option
v. Fan and Aux heat current sensor activation
vi. Line Voltage calibration – Voltmeter
required to calibrate line voltage during
heat or cooling. Refer to Line Voltage
Calibration in this manual for more details.
e. Smart Grid Setup – Select Action option for utility
received on-peak signal
f. Home Automation 1 & 2 Setup – Select type of
sensor for two home automation inputs.
Configuring the Sensor Kits
Configuring the Sensor kits
The Aurora Advanced Control allows Refrigeration, Energy, and
Performance Monitoring sensor kits. These kits can be factory or
field installed. The following description is for field activation of a
factory installation of the sensor kits.
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