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Startup
(See back of the manual for startup form)
Operation Limits
Min. Entering Air
Max Entering Air
Min. Entering Water
Max Entering Water
Min. GPM/Ton
Max GPM/Ton
Min. CFM/Ton
WARNING
Improper
installation,
alteration, service or maintenance can
cause property damage, personal
injury or loss of life. Startup and
service must be performed by a
Factory Trained Service Technician.
Keep a copy of this IOM with the unit.
WARNING
Electric shock hazard. Shut off all
electrical power to the unit to avoid
shock hazard or injury from rotating
parts.
During startup, it is necessary to perform
routine checks on the performance of the unit.
This includes checking of the air flow, the air
filters, and water flow. Due to the charge-
critical nature of these units, refrigerant
pressure gauges must only be hooked up to
the unit if there is suspicion of an issue within
the circuit.
Cooling
Heating
60°F
45°F
100°F
80°F
30°F
20°F
110°F
90°F
1.5
4
300
adjustment,
Supply Fans
Units are equipped with direct drive forward
curved or backward curved plenum supply
fan assemblies that deliver the air volume
specified according to unit size and job
requirements.
Figure 13 - WSHP Series Supply Fan
Fan Air Flow Adjustment
A specific air volume is delivered by the PSC
fans. Field airflow adjustment may be
required at startup.
Standard PSC motors have limited RPM
Adjustment to adjust airflow. Each motor
type has three speed taps to select from: High,
Medium, and Low. Adjustment for the PSC
speed must be made by altering the motor
power connected to the motor. (WH015 -
060).
Adjustment for the A cabinet units (WH006-
012) is made by adjusting the DC voltage
signal to the motor from the Pioneer
Expansion board or the Pioneer Gold board.
Low fan speed is achieved by connecting the
compressor Y call from the thermostat to Y1
29
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