York DM 300 - Manual (Page 29)

262259-YTG-E-1008
Johnson Controls Unitary Products 29
TABLE 24: SUPPLY FAN VFD WEIGHTS, IN LBS.
SUPPLY FAN MOTOR 230V 460V 575V
W/O MANUAL BYPASS
5.0 hp 25 25 30
7.5 hp 30 30 30
10.0 hp 30 30 35
15.0 hp 30 30 40
W/MANUAL BYPASS
5.0 hp 30 30 35
7.5 hp 35 35 35
10.0 hp 35 35 40
15.0 hp 40 35 45
TABLE 25: ELECTRIC HEAT CORRECTION
FACTORS
NOMINAL VOLTAGE VOLTAGE kW CAP. MULTIPLIER
208 208 1.00
240 230 0.92
480 460 0.92
600 575 0.92
FIGURE 3 - TYPICAL DM FIELD WIRING DIAGRAM
RH
RC
Y1
Y2
W1
W2
G
R RH
Y1
Y2
W1
W2
G
B
LED1
LED2
COM
A1
A2
T
T
4
4
3 3
Y1
Y2
W1
W2
G
B
X
A1
A2
L1
L3
L2
RC
R
Y1
Y2
W1
W2
G
B
X
A1
A2
Y3
NOT USED
TO REMOTE SENSOR
2THO4702224 IF USED
1 Electronic programmable thermostat 2ET04700224 (includes subbase).
2 Terminal block 1TB- located on relay board in 24-volt section of the unit control box.
3 Second stage heating is not required on units with a single stage electric heater.
4 Terminals A1 and A2 provide a relay output to close the outdoor economizer dampers
when the thermostat switches to the set-back position.
NOTE: Fans switch must be in "ON" position for minimum ventilation during heater operation.
LINE VOLTAGE
TERMINAL
BLOCK 2TB
IN CONTROL BOX
GROUND LUG
Refer to the
ELECTRICAL DATA
tables to size the
power wiring, the
fuses and the
disconnect switch.
24 VOLT
TRANSFORMER
COOLING / HEATING (24 VOLT THERMOSTAT)
THERMOSTAT 1
TERMINALS
CONTROL WIRING
UNIT TERMINAL
BLOCK 1TB 2
1 24 Volt Thermostat 2TH04701024 or 2TH04701524
(with Subbase 2TB04700324).
2 Terminal strip 1TB - located on relay board in 24-volt section
of the unit control box.
3 Second stage heating is not required on units with a single stage
electric heater.
THERMOSTAT 1
TERMINALS
UNIT TERMINAL
BLOCK 1 TB 2
COOLING ONLY (24 VOLT THERMOSTAT)
24 VOLT
TRANSFORMER
POWER WIRING
ADD
JUMPER
ADD
JUMPER
ADD
JUMPER