Operation; Cooling System; Preliminary Operation Cooling; Cooling Sequence Of Operation - York SUNLINE PLUS D1EG090 Installation Instruction

TABLE 6 - ACCESSORY STATIC RESISTANCES*
DESCRIPTION
Economizer/Motorized Damper
*Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table.
TABLE 7 - BLOWER MOTOR AND DRIVE DATA
BLOWER
MODELS RANGE
(RPM)
HP
DEG090 975-1220 2
DEG120 2, 3
860-1090
DEG150 3
DEG150 960-1140 5
*
All motors are 1750 RPM, have solid bases and are inherently protected. These motors can be selected to operate into their service factor because they are located in the moving air,
upstream of any heating device.
TABLE 8 - ELECTRICAL DATA
MODEL POWER
DEG SUPPLY
208/230-3-60
090
460-3-60
208/230-3-60
120
460-3-60
208/230-3-60
150 460-3-60
575-3-60
NOTES: 1. Dual element, time delay type. Amps shown as "40/45" indicates rating for
LO HP/HI HP, respectively. Maximum HACR breaker of the same AMP size is applicable.
2. Based on 75°C copper conductors.

COOLING SYSTEM

The cooling section is a complete factory package utilizing an
air-cooled condenser. The system is factory-charged with
Refrigerant-22. The compressors are hermetically sealed and
internally sprung and base mounted on spring isolators.
The compressors also have inherent (internal) protection. If
there is an abnormal temperature rise in a compressor, the
protector will open to shut down the compressor.

PRELIMINARY OPERATION COOLING

After installation has been completed, energize the crankcase
heaters for at least four hours before operating unit. After this
initial warm-up, the compressors should be given three false
starts (energized just long enough to make a few revolutions)
with 5-7 minutes delay between each start before being put into
full time service. (Not applicable on 10 ton units.)
NOTE: Prior to each cooling season, the crankcase heaters
must be energized at least 10 hours before system is
put into operation.

COOLING SEQUENCE OF OPERATION

When the thermostat calls for "first-stage" cooling, the low
voltage control circuit from "R" to "G" and "Y1" (wiring
schematic) is completed to energize compressor #1,
condenser fan motor #1 and blower motor simultaneously.
Unitary Products Group
EXTERNAL STATIC PRESSURE DROP - RESISTANCE, IWG
2250
0.02
MOTOR*
SERVICE FRAME EFFICIENCY
FACTOR SIZE (%)
1.20 56 82.0
1.20 56 82.0
1.15 184 82.0
OUTDOOR
COMPRESSOR
FAN
(#1 and #2)
MOTOR,
(#1 & #2)
FLA
RLA LRA
EACH
EACH EACH
14.1 130 2.3
7.1 64 1.3
19.5 123 2.3
10.0 62 1.3
20.7 156 3.5
10.0 70 2.5
8.2 54 2.5

OPERATION

CFM
3000 4000
0.02 0.03
ADJUSTABLE
MOTOR PULLEY BLOWER PULLEY
PITCH PITCH
BORE
DIA. DIA.
(IN.)
(IN.) (IN.)
3.4 - 4.4 7/8 6.2
3.4 - 4.4 7/8 7.0
4.9 - 5.9 1-1/8 8.9
SUPPLY
TOTAL
AIR
UNIT
BLOWER
AMPACITY,
MOTOR,
AMPS
FLA
2HP 3HP 5 HP 2HP
7.5 - - 43.8
3.4 - - 21.9
7.5 10.6 - 56.0
3.4 4.8 - 28.5
- 10.6 15.1 -
- 4.8 7.5 -
- 3.9 5.9 -
When the thermostat calls for "2nd-stage" cooling, the low
voltage control circuit from "R" to "Y2" is completed to energize
compressor #2 and condenser fan motor #2.
After the thermostat is satisfied and opens, all components
likewise stop simultaneously.
CONTINUOUS BLOWER - Continuous blower operation is
possible by closing the R to G circuit on the thermostat.
SAFETY CONTROLS
Each refrigerant system is equipped with the following safety
controls:
1. A Suction Line Freezestat to protect against low evaporator
temperatures due to a low air flow or a low return air
temperature.
2. A High Pressure Cutout Switch to protect against excessive
discharge pressures due to a blocked condenser coil or a
condenser motor failure.
3. A Low Pressure Switch to protect against loss of refrigerant
charge.
If either one of the above safety controls opens, that individual
refrigerant system will be locked out. The other refrigerant
system will continue in operation unless it too is effected by the
same fault. The lock out of either system can be reset by
opening the 24V circuit either at the room thermostat or at the
unit disconnect.
5000 6000
0.05 0.07
FIXED
BELTS
PITCH
BORE DESIG-
LENGTH
(IN.) NATION
(IN.)
1 50.3
1 57.3
1 62.8
(Notched)
MAX.
FUSE
1
SIZE,
AMPS
3HP 5 HP 2HP
- - 50 8
- - 25 10
59.1 - 70 6
29.9 - 35 8
64.2 68.7 80 -
32.3 35.0 40/45 -
27.4 29.4 35 -
530.22-N4Y
QTY
A49 1
A56 1
BX61
1
MIN.
WIRE
SIZE,2
AWG
3HP 5 HP
- -
- -
6 -
8 -
6 4
8 8
8 8
11