Installation guide

H
(O24) 60 Hz COOLING CHARGING CHART
For use with units using R41Oa Retngerant
_tRE_ S
d5
0_ 41I
35
:i ?4
55 18
55 13
15 ?
Fig. 25--Cooling Charging Chart, 50JZ 024 Units 82
(O361 60 Hz COOLING CHARGING CHART
For USe With UndS USu'_ R41Oa Refrigerant
'_ i / 22- 2
i r
, L ..... _ _ ....... . .....
1EMP
F C
125 _2
115
IC6 4_
9_ _5
56 _3
_5 7
O084
Fig. 27_Cooling Charging Chart, 50JZ 036 Units
ia. 26---Coolina Charaina Chart. 50,,[Z 030UnCl_ 0083
(042) 60 HZ COOLING CHARGING CHART
For use with units using R410a Refrigerant
_T_E T_*_L_
...... : .... ] ..... i ....
3O te _
3_0o0_
; C
125 :2
!_5 41
35
_5 29
"5 ;4
55 _3
45 7
COOO85
Fig. 28---Cooling Charging Chart, 50JZ 042 Units
DEFROST
The defrost control is a time/temperature control which includes a
field-selectable time period (DIP switch I and 2 on the board)
between defrost cycles of 30, 60, 90, or 120 minutes (factory set at
30 minutes).
To initiate a forced defrost, two options are available depending on
the status of the defrost thermostat.
If defrost thermostat is closed, speedup pins (J 1) must be shorted
by placing a flat bead screw driver in between for 5 sec and
releasing, to observe a complete defrost cycle. When the Quiet
20
Shift switch is selected, compressor will be turned off for two 30
sec intervals during this complete defrost cycle, as explained
previously. When Quiet Shift switch is in factory default OFF
position, a normal and complete defrost cycle will be observed.
If defrost thermostat is in open position, and speedup pins are
shorted (with a flat head. screw driver) for 5 sec and released, a
short defrost cycle will be observed (actual length is dependent
upon the selected Quiet Shift posirion!. When Quiet Shift switch is
in ON position, the length of defrost is I minute (30 sec
compre._or off period followed by 30 sec of defrost with com-
pressor operation). On return to heating operation, compressor will