York PHE6B36 Installation Manual page 17

Table 20: Thermostat Signals
Signal State
ON Indoor blower instant on
G
OFF Indoor blower off after 60-second delay
Indoor blower instant on
ON
Electric heat stages on (if so equipped)
W
Electric heat stages off (if so equipped)
OFF
Indoor blower off after off delay
Indoor blower instant on in heating speed
ON
Electric heat stages on (if so equipped)
G & W
Electric heat stages off (if so equipped)
W OFF
Indoor blower switches to continuous fan speed
Outdoor fan instant on
Indoor blower instant on in cooling speed
ON
Compressor on (after any anti-short cycle delay)
System operates in heat pump heating mode
Compressor instant off
G & Y
Y OFF Outdoor fan instant off
Indoor blower switches to continuous fan speed
Compressor instant off
G & Y
Outdoor fan instant off
OFF
Indoor blower off after 60 second delay
Outdoor fan instant on
Indoor blower instant on in cooling speed
ON Compressor on (after any anti-short cycle delay)
Reversing valve energized
System operates in cooling mode
Compressor instant off
G, Y & O Outdoor fan instant off
Y & O
OFF
Reversing valve off
Indoor blower switches to continuous fan speed
Compressor instant off
Outdoor fan instant off
G, Y & O
OFF
Reversing valve off
Per Delay Profiles Paragraph and Table 16
FIGURE 10: Measuring External Static Pressure
Johnson Controls Unitary Products
Board Function
STARTUP
1. Check the electrical supply voltage being supplied. Be sure that it is
within the specified range on the unit data plate.
2. Make sure all electrical connections are tight.
3. If unit is connected to 208 volt supply power, the control transformer
must be wired accordingly.
4. Turn unit electrical power on.
5. Set the room thermostat to COOL mode and lower the desired tem-
perature setting lower than the room temperature to create a call for
cooling.
CAUTION
!
Scroll compressors require proper rotation to operate properly. Fail-
ure to check and correct rotation may result in property damage.
NOTICE
Three-phase, scroll compressors operate in only one direction. If the
scroll is drawing low amperage, has similar suction and discharge
pressures, or is producing a high noise level, the scroll is misphased.
6. Check compressor rotation. If the scroll is misphased, change the
incoming line connection phasing to obtain the proper rotation.
7. Measure the total system duct static, and set the blower motor cool-
ing speed appropriately per airflow performance tables.
8. Make sure all unit panels are in place and secure and that an air fil-
ter is installed.
EXTERNAL STATIC PRESSURE SETUP
To measure external static pressure:
• Measure the supply air static pressure
• Record this positive number
• Measure the return air static pressure
• Record this negative number
• Treat the negative number as a positive and add the two numbers
together
• This is total system static
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