Installation and Service Manual

ManualsBrandsModine ManualsHeatingStep-Down Transformer - 0.5 KVA - For 230 or 460 Volt Supply

September, 2006

INSTALLATION

Step Down Transformer Kit

models HSB/HC, V/VN, PT/PTN, WTC/WSC, WVC/WVN, WPC/WPN

manufactured after September 1, 2005

Special Precautions

1) Installation of wiring must conform with local building

codes, or in the absence of local codes, the National

Electric Code ANSI/NFPA 70 - Latest Edition. Unit must

be electrically grounded in conformance to this code. In

Canada, wiring must comply with CSA C22.1, Part 1,

Electrical Code.

2) Disconnect supply voltage.

3) Verify electrical system supply voltage to ensure it matches

the accessory transformer primary voltage rating.

4) Verify that the unit heater supply voltage listed on the

serial plate is 115 Volts, 60 Hertz, 1 Phase.

5) Verify that the accessory transformer is correctly sized for

the unit type, size, and supply voltage. The accessory item

codes and kVA sizes are shown in Table 1.1.

Table 1.1

Transformer Accessory Item Codes and Ratings

1-556.2

5H79544A1 Rev. B

THIS MANUAL IS THE PROPERTY OF THE OWNER.

PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB.

Warning

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.

important

The use of this manual is specifically intended for a qualified

installation and service agency. All installation and service

of these units must be performed by a qualified installation

and service agency. These manuals may contain excerpts

from component supplier literature adapted for Modine

products. Any accompanying component supplier literature

is for general information.

Supply Voltage

200V/60Hz/ 230/460V/ 575V/60Hz/

1 or 3 phase 60Hz/3 phase 3 phase

Item Item Item

Model Size Code kVA Code kVA Code kVA

HSB/HC 18-63 48094 0.50 48099 0.25 48108 0.25

HSB/HC 86-121 48100 0.50 48109 0.50

HSB/HC 165-193 48095 1.00 48101 0.75 48110 0.75

HSB/HC 258-340 48102 1.00 48111 1.00

V/VN 42-59 48096 0.50 48103 0.25 48112 0.25

V/VN 78-139 48104 0.50 48113 0.50

V/VN 161-212 48097 1.00 48105 0.75 48114 0.75

V/VN 247-333 48106 1.00 48115 1.00

PT/PTN 279-333 48098 1.00 48107 1.00 48116 1.00

HSB/HC,

WTC/WSC

48094 0.50

48095 1.00

48096 0.50

48097 1.00

V/VN,

WVC/WVN

PT/PTN,

WPC/WPN

Summary of content (4 pages)

PAGE 1
-556.2 5H79544A1 Rev. B September, 2006 Installation Step Down Transformer Kit models HSB/HC, V/VN, PT/PTN, WTC/WSC, WVC/WVN, WPC/WPN manufactured after September 1, 2005 Warning 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.
PAGE 2
Transformer to Mounting Bracket Installation 1) Review Table 2.1 to identify if the transformer accessory requires a factory supplied bracket to mount the transformer to the unit heater (on some models, the transformer mounts directly to the heater without the use of an extra bracket). If a bracket is not required, skip to the section titled, “Mounting the Transformer Accessory to the Unit Heater”. Figure 2.1 HSB/HC, WTC/WSC Model Bracket Mounted Transformer nut and washer foam pad Table 2.
PAGE 3
Figure 3.1 V/VN, WVC/WVN Model Bracket Mounted Transformer (2) self-drilling screws with foam pad (not shown) nuts on provided cap screws foam pad (1) self-drilling screw Figure 3.2 PT/PTN, WPC/WPN Bracket Mounted Transformer nut on existing threaded stud foam pad Wiring the Transformer Accessory to the Unit Heater 1) Install the wiring harness (conduit, connectors and wires) between the transformer junction box and the unit heater junction box.
PAGE 4
Commercial HVAC&R Division • Modine Manufacturing Company • 1500 DeKoven Avenue • Racine, Wisconsin 53403-2552 “HS/HSB/HC”, “V/VN” & “PT/PTN” Model Series - Phone: 1.800.828.4328 (HEAT) • Fax: 1.800.204.6011 “WTC/WSC”, “WVC/WVN” & “WPC/WPN” Model Series - Phone: 1.866.823.1631 (Toll Free) • Fax: 1.800.204.6011 © 2006 Modine Manufacturing Company 1-556.