AHRI RJNL-B, Руководство по установке

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11. Adjust discharge air grilles and balance system.
12. Check ducts for condensation and air leaks.
13. Check unit for tubing and sheet metal rattles.
14. Instruct the owner on operation and maintenance.
15. Leave “INSTALLATION” and ”USE AND CARE“ instruc-
tions with owner.
XVII. OPERATION
COOLING MODE
With thermostat in the cool mode, fan auto and the room tem-
perature higher than the thermostat setting:
A. Indoor blower contactor is energized through thermostat
contact (G).
B. Compressor contactor is energized through thermostat con-
tact (Y1). A 5 minute short cycle delay is standard on this
unit. Compressor will start immediately if test pins on the
defrost board are shorted and released.
C. Reversing valve is de-energized in the cooling mode
through thermostat contact (B).
D. Economizer enthalpy control (if installed) controls operation
of first-stage cooling and positions fresh air damper to main-
tain mixed air temperature. Second-stage cooling operates
normally as required by second stage of thermostats.
E. The system will continue in cooling operation as long as all
safety controls are closed, until the thermostat is satisfied.
HEATING MODE
With thermostat in the heat mode, fan auto and the room tem-
perature lower than the thermostat setting:
A. Indoor blower contactor is energized through thermostat
contact (G).
B. Compressor contactor is energized through thermostat con-
tact (Y1). A 5 minute short cycle delay is standard on this
unit. Compressor will start immediately if test pins on the
defrost board are shorted and released.
C. Reversing valve is energized in the heating mode through
thermostat contact (B).
D. Economizer enthalpy control (if installed) is electrically
bypassed with the heat pump control relay during heating
operation.
E. Should the heat requirement be more than the heat pump
can supply, a portion of the electric heat accessory (if sup-
plied) is energized through thermostat contact (W3).
F. The system will continue in heating operation as long as all
safety controls are closed, until the thermostat is satisfied.
G. The unit will function in a defrost mode, reversing the refrig-
erant cycle to cooling and energizing the electric heat (if
supplied) as required through the defrost relay.
H. If the refrigerant system becomes inoperable during a need
for heating, the thermostat may be set to emergency heat
which will energize the electric heat (if supplied).
TABLE 1. COPPER WIRE SIZE — AWG (1% VOLTAGE DROP)
300
250
200
150
100
50
Supply
Wire
Length
Feet
4
4
6
8
10
14
15
3
4
4
6
8
12
20
2
3
4
6
8
10
25
2
3
4
4
6
10
30
1
2
3
4
6
8
35
1/0
1
2
4
6
8
40
1/0
1
2
3
4
6
45
2/0
1/0
1
3
4
6
50
2/0
1/0
1
2
4
6
55
3/0
2/0
1/0
2
3
4
60
3/0
2/0
1/0
1
3
4
65
3/0
2/0
1/0
1
2
4
70
4/0
3/0
2/0
1/0
2
3
75
4/0
3/0
2/0
1/0
2
3
80
4/0
3/0
2/0
1/0
1
3
85
4/0
4/0
3/0
1/0
1
2
90
250
4/0
3/0
2/0
1
2
95
250
4/0
3/0
2/0
1
2
100
250
4/0
3/0
2/0
1
2
105
250
4/0
3/0
2/0
1/0
2
110
300
250
4/0
2/0
1/0
1
115
300
250
4/0
3/0
1/0
1
120
300
250
4/0
3/0
1/0
1
125
Circuit Ampacity
NOTE:
1. Wire size based on 60ºC type copper conductors below 100 ampacity. 2. Wire size based on 75ºC type copper conductors for 100 ampacity and above.
FIGURE 17.
THERMOSTAT CONNECTIONS DIAGRAMS
R Y1 Y2 G C
TERMINAL BLOCK
ST-A1125-36-00
ONLY USED
ON DUAL
FUEL OR HEAT
PUMP
MODELS
IFC BOARD LOW VOLTAGE
THERMOSTAT CONNECTIONS
W3 B
A1 A2
W1 W2
R Y1 Y2 G C E W B
J2
NOTE: Y2 IS ONLY NECCESSARY FOR ECONOMIZER OPERATION
STANDARD WIRING
R Y1 Y2 G C
ST-A1125-37-00
ONLY USED
ON DUAL
FUEL OR HEAT
PUMP
MODELS
IFC BOARD LOW VOLTAGE
THERMOSTAT CONNECTIONS
W3 B
A1 A2
W1 W2
R Y1 Y2 G C E W B
NOTE:
REMOVE PURPLE JUMPER J1 FROM IFC QUICK CONNECT TERMINALS.
REMOVE WHITE JUMPER J2 FROM A1 TO A2 THERMOSTAT CONNECTIONS.
REMOVE JUMPER AT THERMOSTAT SUBBASE FROM E TO W.
Y2 IS ONLY NECCESSARY FOR ECONOMIZER OPERATION.
ALTERNATE LOW VOLTAGE WIRING WITH OUTDOOR THERMOSTAT
WHITE
BLACK
BLUE
BROWN
RED
-XPT-A04 OUTDOOR
DUAL THERMOSTAT
WITH ELECTRIC HEAT
RELAY