Bryant 581C024--060 사용자 설명서
45
Table 37—Perfect Humidity Adaptive Dehumidification System Sequence of Operation and
System Response — Single Compressor Unit (581C 024--060, 581B 036--072)
THERMOSTAT INPUT
ECONOMIZER FUNCTION
581B,C UNIT OPERATION
H
Y1
Y2
OAT. < Economizer Set Point
Economizer
Comp. 1
Subcooling Mode
Hot Gas Reheat Mode
Off
—
—
Normal Operation
On
On
On
No
Off
On
Yes
No
On
On
Off
No
Off
On
Yes
No
On
On
On
Yes
On
On
Yes
No
On
On
Off
Yes
On
On
No
Yes
On
Off
Off
No
Off
On
No
Yes
NOTE: On a thermostat call for W1, all cooling and dehumidification will be off.
LEGEND
OAT --- Outdoor Air Temperature
The net effect of the rooftop when in hot gas reheat mode is to
provide nearly all latent capacity removal from the space when
provide nearly all latent capacity removal from the space when
sensible loads diminish (when outdoor temperature conditions are
moderate). When in hot gas reheat mode, the unit will operate to
moderate). When in hot gas reheat mode, the unit will operate to
provide mostly latent capacity and extremely low sensible heat
ratio capability.
Similar to the subcooling mode of operation, hot gas reheat mode
Similar to the subcooling mode of operation, hot gas reheat mode
operates only when the outside air temperature is warmer than
40_F. Below this temperature, a factory installed outside air
40_F. Below this temperature, a factory installed outside air
temperature switch will lockout this mode of operation.
SERVICE
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal
Failure to follow this warning could cause personal
injury or death.
When sevicing unit, shut off all electrical power to unit
When sevicing unit, shut off all electrical power to unit
and install lockout tag.
!
WARNING
Step 1
—Cleaning
Inspect unit interior at the beginning of heating and cooling
season and as operating conditions require.
Evaporator Coil
Evaporator Coil
1. Turn unit power off, tag disconnect. Remove evaporator
coil access panel.
2. If economizer or two-position damper is installed, remove
economizer
by
disconnecting
Molex
plug
and
removing mounting screws.
3. Slide filters out of unit.
4. Clean coil using a commercial coil cleaner or dishwasher
4. Clean coil using a commercial coil cleaner or dishwasher
detergent in a pressurized spray canister. Wash both sides
of coil and flush with clean water. For best results,
back-flush toward return-air section to remove foreign
of coil and flush with clean water. For best results,
back-flush toward return-air section to remove foreign
material. Flush condensate pan after completion.
5. Reinstall economizer and filters.
6. Reconnect wiring.
7. Replace access panels.
6. Reconnect wiring.
7. Replace access panels.
Condenser Coil
Inspect coil monthly. Clean condenser coil annually, and as
required by location and outdoor air conditions.
Inspect coil monthly. Clean condenser coil annually, and as
required by location and outdoor air conditions.
One--Row Coils
Wash coil with commercial coil cleaner. It is not necessary to
Wash coil with commercial coil cleaner. It is not necessary to
remove top panel.
2-Row Coils
Clean coil as follows:
2-Row Coils
Clean coil as follows:
1. Turn off unit power, tag disconnect.
2. Remove top panel screws on condenser end of unit.
3. Remove condenser coil corner post. (See Fig. 47.) To hold
2. Remove top panel screws on condenser end of unit.
3. Remove condenser coil corner post. (See Fig. 47.) To hold
top panel open, place coil corner post between top panel
and center post. (See Fig. 48.)
C06044
Fig. 47
--- Cleaning Condenser Coil
C06045
Fig. 48
--- Propping Up Top Panel
581B
,C