Wiring Guide

ManualsBrandsModine ManualsHeating SuppliesHC18 Horizontal Hydronic Unit Heater - 15,900 BTU

1-454.10

September, 2006

WIRING DIAGRAMS

steam/hot water unit heaters

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

Diagram Selection

Diagrams are provided for both single and three-phase circuits,

and are readily identified in the Selection Table 1.1.

Select the correct wiring diagram as follows:

1. Determine unit heater model, size and voltage/power code.

2. Review Table 1.1 to locate the page number that matches

the characterstics of the heater from step 1.

Example Selection

Select the wiring diagram for an HSB340 for use on

460V/60 hz/3 phase supply voltage.

In Table 1.1 select the page number where the column for the

voltage intersects with the row for HSB340. The correct wiring

diagram for this unit is found on page 2. Note that footnote ➀

indicates that the unit will be Power Code 01, 115V/60Hz/1ph

requiring an accessory transformer. See literature #1-556 for

additional details.

Two-in-one Diagrams

Two wiring diagrams are furnished for each circuit configuration

in this manual. Included are a connection diagram at the left

for field installation and circuit schematic at the right to aid in

continuity and trouble shooting.

The heavier lines in the connection diagram indicate line voltage;

the lighter lines indicate low voltage. Solid lines show pre-wiring

performed at the factory; dotted lines inform the installer of

connections required to put the heater in operation.

NOTE: As indicated in every diagram, all wiring must comply

with the National Electrical Code and all local codes. All

components must agree with their respective power source.

CAUTION

Turn off all power and gas to unit before wiring. Failure to wire

this unit according to this wiring diagram may result in injury

to the installer or user. For deviations, contact factory.

Motor Voltage and Power Code

115/60/1 200/601 230/60/1 200-208/60/3 230/460/60/3 575/60/3

01 - 02 04 05 10

Model Page Page Page Page Page Page

HSB/HC, WTC/WSC 18-340 2 2  2 2  2  2 

V/VN, WVC/WVN 42-279 2 2  2 2  2  2 

V/VN, PT/PTN, WVC/WVN, WPC/WPN 333 3 3  3 3  3  3 

V/VN, PT/PTN, WVC/WVN, WPC/WPN 385-952  - - - 4 4 4

Table 1.1

Wiring Diagram Page Location for Units with Totally Enclosed Motors

➀ For supply voltages of 200V/60Hz/1ph and all non-explosion proof 3 phase voltages of 200, 230, 460 and 575, Model Numbers indicated with Note ➀, require that

a 115V/60Hz/1 phase Power Code 01 unit heater be used with a shipped loose accessory transformer. See literature #1-556 for additional information.

➁ VN/PTN, WVN/WPN952 not available.

➂ For HSB/HC, WTC/WSC (all sizes) and VN/PTN, WVN/WPN (sizes 333 and below) with Power Code 04, 05 and 10 manufactured before September, 2005, use

the wiring diagram on page 4.

Summary of content (4 pages)

PAGE 1
-454.10 September, 2006 wiring diagrams steam/hot water unit heaters Models HSB/HC, V/VN, PT/PTN, WTC/WSC, WPC/WPN, WVC/WVN Diagram Selection Two-in-one Diagrams Diagrams are provided for both single and three-phase circuits, and are readily identified in the Selection Table 1.1. Two wiring diagrams are furnished for each circuit configuration in this manual.
PAGE 2
Abbreviations and Symbols XFMR Transformer V Volts Hz Cycle or Hertz φ Phase “J” Box Junction Box t Thermostat VA Volt-Ampere H1, H2, etc. Transformer Primary Terminals O.L.C. Overload Contact 1-454.10 X1, X2, etc. L1, L2, etc. T1, T2, etc. Transformer Secondary Terminals Electric Load Terminals Starter or Motor Terminals Wire Color Coding BK BL BR R W Black Blue Brown Red White * "/8 '2%%. 7)2% 4/ "% '2/5.$%$ )& 3500,)%$ &!.
PAGE 3
Abbreviations and Symbols XFMR Transformer V Volts Hz Cycle or Hertz φ Phase “J” Box Junction Box t Thermostat VA Volt-Ampere H1, H2, etc. Transformer Primary Terminals O.L.C. Overload Contact 1-454.10 X1, X2, etc. L1, L2, etc. T1, T2, etc.
PAGE 4
Abbreviations and Symbols XFMR Transformer V Volts Hz Cycle or Hertz φ Phase “J” Box Junction Box t Thermostat VA Volt-Ampere H1, H2, etc. Transformer Primary Terminals O.L.C. Overload Contact © Modine Manufacturing Company 2006 1-454.10 X1, X2, etc. L1, L2, etc. T1, T2, etc.