York W)036 THRU 060 Specifications Page 34
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- TROUBLESHOOTING
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542300-YIM-A-1009
34 Johnson Controls Unitary Products
the actuator modulates from the minimum position to the full
open position based on the highest call from either the mixed
air sensor input or the AQ voltage input.
• Optional CO
2
Space Sensor Kit Part # 2AQ04700324
• Optional CO
2
Sensor Kit Part # 2AQ04700424
Replace the economizer access panel.
Figure 17: Enthalpy Set Point Chart
Figure 18: Honeywell Economizer Control W7212
Phasing
ZF units are properly phased at the factory. Check for proper
compressor rotation. If the blower or compressors rotate in the
wrong direction at start-up, the electrical connection to the unit
is misphased. Change the phasing of the Field Line
Connection at the factory or field supplied disconnect to
obtain proper rotation. (Scroll compressors operate in only one
direction. If the scroll is drawing low amperage, has similar
suction and discharge pressures, or producing a high noise
level, the scroll is misphased.)
Blower Rotation
Check for proper supply air blower rotation. If the blower is
rotating backwards, the line voltage at the unit point of power
connection is misphased (See ‘PHASING’).
Belt Tension
The tension on the belt should be adjusted as shown in Figure 19.
Figure 19: Belt Adjustment
40
(4)
70
(21)
50
(10)
55
(13)
60
(16)
65
(18)
35
(2)
45
(7)
75
(24)
80
(27)
35
(2)
40
(4)
45
(7)
50
(10)
55
(13)
60
(16)
65
(18)
70
(21)
75
(24)
80
(27)
85
(29)
85
(29)
90
(32)
90
(32)
105
(41)
110
(43)
100
(38)
95
(35)
95
(35)
100
(38)
105
(41)
110
(43)
APPROXIMATE DRY BULB TEMPERATURE -
0
F (
0
C)
D
D
C
C
B
B
A
A
CONTROL
CURVE
CONTROL POINT
APPROX.
0
F (
0
C)
AT 50% RH
A
D
C
B
63 (17)
73 (23)
70 (21)
67 (19)
N1
N
P1
P
EXH
Set
EXH
Min
Pos
IAQ
Max
IAQ
IAQ
Min
Free
Cool
T
T1
AQ1 AQ
SO+ SO
SR+
SR
A
BC
D
TR TR1
24
Vac
HOT
24
Vac
COM
EF EF1
2
3
4
5
1
+
Exhaust Air
Adjustment
Screw
Exhaust Air LED
Damper Min.
Position
Screw
Indoor Air Quality
Max. Adjustment
Screw
Indoor Air Quality
LED
Indoor Air Quality
Min. Adjustment
Screw
Free Cooling LED
Economizer Enthalpy
Set Point Adjustment
Screw
Scroll compressors require proper rotation to operate
correctly. Units are properly phased at the factory. Do
not change the internal wiring to make the blower
condenser fans, or compressor rotate correctly.
*Never Loosen
(A)
(C)*
(B)
Span Length
Defl Force
- ZF SERIES 1
- Product Nomenclature 4
- Installation 5
- Location 7
- Rigging And Handling 7
- 542300-YIM-A-1009 10
- Ductwork 12
- Condensate Drain 12
- Compressors 12
- Power And Control Wiring 13
- Wire Size Maximum Length 14
- 18 AWG 150 Feet 14
- TYPICAL CONTROL WIRING 15
- TYPICAL POWER WIRING 15
- Table 7: Electrical Data 16
- Optional Electric Heat 30
- Options/Accessories 33
- Adjustments 33
- Span Length 34
- Air Temperature (ºF) 35
- Correction Factor 35
- Drive Selection 37
- Table X: RPM Selection 37
- Checking Supply Air CFM 41
- Operation 42
- Gas Heat Operation Errors 45
- Flash Codes 46
- Heat Anticipator Setpoints 46
- Start-up (Cooling) 47
- Start-up (Gas Heat) 47
- Checking Gas Input 49
- Charging The Unit 50
- Troubleshooting 50
- 3 Ton Charging Chart 52
- 5 Ton Charging Chart 53
- Fan On And Off Delays 58
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