Johnson Controls (H, Engineering Manual

Page: 56 / 124

OUTDOOR UNITS
2-34
TC-16006
Yes
Yes
Yes
No
No No
No
No No
Yes
Heating Operation
Reverse Cycle Defrosting Operation
Evaporating Temperature (Te)
at Heat Exchanger is
Temperature Condition under
Starting Defrosting Operation
or Below
1 Minute Later
Hot Gas Bypass
Defrosting Operation
Compressor Operating
at Low Frequency
Evaporating Temperature (Te)
at Heat Exchanger is
Temperature Condition under
Starting Defrosting Operation or Below
and
Outdoor Fan Power is increased 110%
Heating Operation Time
30 minutes or Above
Reverse Cycle Defrosting Time is
9 minutes or Above
Hot Gas Bypass Defrosting Time is
10 minutes or Above
Heating Exchanger Temperature is
59
o
F (15
o
C) or Above
and
Pd > 188.6psi (1.3MPa)
Yes
No
Yes
Heating Exchanger Temperature is
41
o
F (5
o
C) or Above
and
Pd > 105.9psi (0.73MPa)
Outdoor Fan
MFC : OFF
RVR2 : OFF
RVR2 : ON
Outdoor Fan
MFC : OFF
Fixed Opening
Degree of Electronic
Expansion Valve
Fixed Opening
Degree of Electronic
Expansion Valve
PID Control for
Super Cooling Electronic
Expansion Valve
PID Control for
Super Cooling Electronic
Expansion Valve
High Frequency
Operation
High Frequency
Operation
Reverse Cycle Defrosting Completion Hot Gas Bypass Defrosting Completion
Heating Operation
1
2
Indoor Fan
MIF : OFF
Indoor Fan
MIF : OFF
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Defrosting Operation
Stop Area
Temperature
Conditions
under
Defrosting
Operation
Temperature Condition under Starting Defrosting Operation:
Temperature Condition under Starting Defrosting Operation:
Hot Gas Bypass Defrosting
or Reverse
Cycle Defrosting
Start Area
Reverse Cycle Defrosting
Start Area
Outdoor Temperature [°F (°C)]
28
(-2)
-15.9
(-26.6)
-26.5
(-32.5)
-13
(-25)
41
(5)
53.6
(12)
59
(15)
Outdoor Evaporating
T
e
mperature (T
e) [°F (°C)]
1
2
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