33
T-305
Table 6 Controller Function Codes (Sheet 3 of 4)
Cd31 Stagger Start Offset
Time (Seconds)
The stagger start offset time is the amount of time that the unit will delay at start-
up, thus allowing multiple units to stagger their control initiation when all units are
powered up together. The eight possible offset values are:
0 (Factory Default), 3, 6, 9, 12, 15, 18 or 21 seconds
Cd32 Current Limit
(Amperes)
The current limit is the maximum current draw allowed on any phase at any time.
Limiting the unit’s current reduces the load on the main power supply. This is ac-
complished by reducing the SMV position until current draw is reduced to the set
point. When desirable, the limit can be lowered. Note, however, that capacity is
also reduced. The five values for 460vac operation are:
15, 17, 19, 21 (Factory Default), 23
Cd33
Perishable Mode
Dehumidification/Hu-
midification Control
(% RH)
Relative humidity set point is available only on units configured for dehumidifica-
tion. When the mode is activated, the control probe LED flashes on and off every
second to alert the user. If not configured, the mode is permanently deactivated
and “
-- -- -- -- --
” will display. The value can be set to “OFF.” “TEST,” or a range of
65 to 95% relative humidity in increments of 1%. [If bulb mode is active (code
Cd35) and “Lo” speed evaporator motors are selected (code Cd36) then set point
ranges from 60 to 95%.] When “TEST” is selected or test set point is entered, the
heat LED should illuminate, indicating that dehumidification mode is activated.
After a period of five minutes in the “TEST” mode has elapsed, the previously
selected mode is reinstated.
NOTE
If humidification (CnF35) is enabled, then humidification will be enabled and
dehumidification locked out at set points of 75% and above. At set points be-
low 75%, dehumidification will be enabled and dehumidification locked out.
Cd34 Economy Mode
(On--Off)
Economy mode is a user selectable mode of operation provided for power saving
purposes.
Cd35 Bulb Mode
Bulb mode is a user selectable mode of operation that is an extension of dehu-
midification control (Cd33). If dehumidification is set to “Off,” code Cd35 will dis-
play “Nor” and the user will be unable to change it. After a dehumidification set
point has been selected and entered for code Cd33, the user may then change
code Cd35 to “bulb.” After bulb has been selected and entered, the user may then
utilize function codes Cd36 and Cd37 to make the desired changes.
Cd36 Evaporator Speed
Select
This code is enabled only if in the dehumidification mode (code Cd33) and bulb
mode (Cd35) has been set to “bulb”. If these conditions are not met, “alt” will be
displayed (indicating that the evaporator fans will alternate their speed) and the
display cannot be changed. If a dehumidification set point has been selected
along with bulb mode then “alt” may be selected for alternating speed, “Lo” for low
speed evaporator fan only, or “Hi” for high speed evaporator fan only. If a setting
other than “alt” has been selected and bulb mode is deactivated in any manner,
then selection reverts back to “alt.”
Cd37
Defrost Termination
Temperature Setting
(Bulb Mode)
This code, as with function code Cd36, is used in conjunction with bulb mode and
dehumidification. If bulb mode is active, this code allows the user to change the
defrost termination thermostat settings. If bulb mode is deactivated, the DTS set-
ting returns to the default.
Содержание 69NT40-489-100 Series
Страница 2: ......
Страница 4: ......
Страница 14: ...Safety 10 T 305...
Страница 28: ...4 T 305...
Страница 40: ...16 T 305...
Страница 50: ...26 T 305 Figure 12 Standard Configuration Report...
Страница 112: ...88 T 305...
Страница 163: ...139 T 305 CFS KA6 CFA1 QC1 FDH HST RRS SINGLE SENSOR ONLY Figure 88 Wiring Diagram Sheet 2 of 2...
Страница 164: ...140 T 305...
Страница 167: ...143 T 305 Based on drawings 62 10526 Rev and 62 10736 Rev Figure 90 Electrical Schematic CA...
Страница 168: ...144 T 305 ALTERNATE CONFIGURATION Figure 91 Electrical Wiring Diagram Controlled Atmosphere Sheet 1 of 2...
Страница 169: ...145 T 305 F Figure 88 E Figure 88 Figure 91 Electrical Wiring Diagram Controlled Atmosphere Sheet 2 of 2...
Страница 172: ...148 T 305 Figure 93 Electrical Wiring Diagram Sheet 1 of 2 Units not modified to include the N2 Purity Solenoid Valve...
Страница 174: ...150 T 305...