NCP Comfort Pack CP9 T Series, Installation Manual

Installation Guide

 | 

Comfort Pack T Series 

with up to

95% Gas Heat 

13

a. Line Voltage Connections

b.  Connect the single phase power supply to unit fuse blower 

terminal L1 and L2

c. Connect ground wire to lug

d. Low Voltage Connections

When locating the room thermostat, it should be in the natural 

circulating path of room air. Avoid locations where the thermostat 

would be exposed to cold air infiltration; drafts from windows, 

doors or other openings leading to the outside; exposure to air 

currents from warm-or-cold air registers or to exposure where the 

natural circulation of the air is cut off, such as behind doors, above 
or below mantels, shelves, etc.

Electrical - High Voltage

Electrical 

All wiring must be installed in accordance with applicable 

codes. 

The unit is factory wired for 230/1/60 power. For 208/1/60 power 

systems, the wiring to the primary side of the control transformer 

should be changed from the 240-volt connection to the 208-volt 

connection to provide proper operation of the control system. 

The operating voltage of the unit is from 196 to 244 volts. 

Operating the equipment outside of these limits will void the 

warranty.

Electrical Supply and Connections

All electrical wiring and connections, including electrical grounding 

must be made in accordance with the National Electric Code ANSI/

NFPA No. 70 (latest edition) or, in Canada, the Canadian Electrical 

Code, Part I-C.S.A. Standard C22.1. In addition, the installer should 

be aware of any local ordinances or utility company requirements 

that might apply.

Check the rating plate for the supply voltage and current 

requirements. A dedicated line voltage supply with fused disconnect 

switch should be run directly from the main electrical panel to the 

unit. All external wiring must be within approved conduit and 

have a minimum temperature rise rating of 60°C. Conduit from 

the disconnect switch must be run so as not to interfere with the 

service panels.

Controls

Field wiring between the unit and the wall thermostat (by others) 

may be low voltage for Class 2 systems. The location of the wall 

thermostat should be 4 to 5 feet above the floor and carefully 

selected so that the thermostat senses the temperature of the 

largest conditioned area, without being influenced by drafts, sun 

exposure or outside temperature.

Electrical Connections

NOTE: 

Make certain that the volts, hertz, and phase correspond to 

that specified on the unit rating plate, and that the service provided 

by the utility is sufficient to handle the additional load imposed by 

this equipment.

Make all electrical connections in accordance with the National 

Electrical Code and any pertinent local codes or ordinances. 

Use a separate branch electrical circuit for this unit. Locate a 

disconnecting means within sight of and readily accessible to the 

unit.

NOMINAL 

VOLTAGE

MINIMUM 

VOLTAGE

MAXIMUM 

VOLTAGE

208-230

196

244

CC

C

S

R

COMP

C

H

CFM

EBM

208V

C

-

+

230V

L1

L2

CC

NEUT.

XFMER

IND

IND