Electrical Connections - Modine Manufacturing PTP Installation And Service Manual

InsTAllATIon - eleCTrICAl ConneCTIons

eleCTrICAl ConneCTIons

W ARNING
1. Disconnect power supply before making wiring
connections to prevent electrical shock and equipment
damage.
2. All appliances must be wired strictly in accordance with
wiring diagram furnished with the appliance. Any wiring
different from the wiring diagram could result in a hazard
to persons and property.
3. Any original factory wiring that requires replacement must
be replaced with wiring material having a temperature
rating of at least 105°C.
4. Ensure that the supply voltage to the appliance, as
indicated on the serial plate, is not 5% greater than rated
voltage.
CAUTION
Ensure that the supply voltage to the appliance, as indicated
on the serial plate, is not 5% less than the rated voltage.
1. Installation of wiring must conform with local building codes,
or in the absence of local codes, with the National Electric
Code ANSI/NFPA 70 - Latest Edition. Unit must be electri cally
grounded in conformance to this code. In Canada, wiring
must comply with CSA C22.1, Part 1, Electrical Code.
Table 13.1 - Propeller unit model PTP operating electrical data 
supply
Power Code
voltage
115V
01 (115V)
1 Phase
208V
01 (115V) with
Transformer
1 Phase
230V
01 (115V) with
Transformer
1 Phase
208V
01 (115V) with
Transformer
3 Phase
230V
01 (115V) with
Transformer
3 Phase
460V
01 (115V) with
Transformer
3 Phase
575V
01 (115V) with
Transformer
3 Phase
 Amp draw data shown is operating amp draw at incoming power. For units that use a field installed accessory step-down transformer
as noted, the amp draw shown is the primary side operating amp draw. For sizing of circuit protection for equipment
with transformers, please refer to the National Electric Code.
➁ For PTP units that are used on 230V/1ph, all models are equipped with 115V motors except the PTP400 which is equipped with
motors that can operate on 230V. Since the transformer does not need to be sized to include the propeller motor, the rating of the
Step Down Transformer Accessory is sized smaller for the power exhauster and gas control circuit only.
150
motor Amps
2.50
Total Amps 5.05
Transformer kvA n/a
Transformer kvA
1.00
208v Total Amps 2.79
Transformer kvA
0.75
230v Total Amps 2.53
Transformer kvA
1.00
208v Total Amps
2.79
Transformer kvA
0.75
230v Total Amps 2.53
Transformer kvA
0.75
460v Total Amps
1.26
Transformer kvA
0.50
575v Total Amps 1.01
2. Two copies of the unit wiring diagram are provided with each
unit. One is located in the side access control compartment
and the other is supplied in the literature packet. Refer to this
diagram for all wiring connections.
3. Make sure all multi-voltage components (motors, transform-
ers, etc.) are wired in accordance with the power supply
voltage.
4. The power supply to the unit must be protected with a fused
or circuit breaker switch.
5. The power supply must be within 5 percent of the voltage
rating and each phase must be balanced within 2 percent of
each other. If not, advise the utility company.
6. External electrical service connections that must be installed
include:
a. Supply power connection (115, 208, 230, 460, or 575 volts).
b. Connection of thermostats, or any other accessory control
devices that may be supplied (24 volts).
noTe: All units with supply voltage 208V and greater must use
a field installed step-down transformer, available as a separate
accessory. Refer to Table 13.1 for additional information on the
required transformer.
7. Refer to Figure 17.1 for the side access control compartment
location.
8. All supply power electrical connections are made in the side
access control compartment of the unit. The low voltage
(thermostat and accessory control devices) can be wired to
the terminals in the side access control compartment. Refer
to the wiring diagram for the terminal location of all low
voltage wiring.
model PTP sizes
175 200 250 300
2.50 4.60 4.60 7.00
5.05 7.15 7.15 8.11
n/a n/a n/a n/a
1.00 1.00 1.00 1.00
2.79 4.20 3.95 4.48
0.75 1.00 1.00 1.00
2.53 3.80 3.58 4.06
1.00 1.00 1.00 1.00
2.79 4.20 3.95 4.48
0.75 1.00 1.00 1.00
2.53 3.80 3.58 4.06
0.75 1.00 1.00 1.00
1.26 1.90 1.79 2.03
0.50 0.50 0.50 0.50
1.01 1.52 1.43 1.62
6-560.4
350 400
7.00 8.80
8.65 10.45
n/a n/a
1.00 1.50
4.78 5.78
1.00 1.50
4.33 5.23
1.00 1.50
4.78 5.78
1.00 1.50
4.33 5.23
1.00 1.50
2.16 2.61
0.50 0.50
1.73 2.09
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