Goodman Mfg IO-354B Supply, Terminal, Thermostat, Areas Without Convenience Outlet

MAIN POWER

LOW VOLTAGE

BLOCK

LOW VOLTAGE

ENTRANCE POWER THRU

THE CURB

CONTROL BOX

WARNING

FAILURE OF UNIT DUE TO OPERATION ON IMPROPER LINE VOLTAGE OR WITH EXCESSIVE PHASE UNBALANCE CONSTITUTES PRODUCT ABUSE AND WILL VOID YOUR WARRANTY AND MAY CAUSE SEVERE DAMAGE TO THE UNIT ELECTRICAL COMPONENTS.

Areas Without Convenience Outlet

It is recommended that an independent 115V power source be brought to the vicinity of the roof top unit for portable lights and tools used by the service mechanic.

UNITS INSTALLED ON ROOF TOPS

Main power and low voltage wiring may enter the unit through the condenser end or through the roof curb. Install conduit connectors at the desired entrance locations. External con- nectors must be weatherproof. All holes in the unit base must be sealed (including those around conduit nuts) to prevent water leakage into building. All required conduit and fittings are to be field supplied.

Supply voltage to roof top unit must not vary by more than 10% of the value indicated on the unit’s data plate. Phase voltage unbalance must not exceed 2%. Contact your local power company for correction of improper voltage or phase unbalance.

HIGH VOLTAGE ENTRANCE (REMOVE PLUG)

	12 3/8”
	30 1/4”*
	1:4
* (6 Ton - 34 1/4”)	LOW VOLTAGE ENTRANCE

RETURN
		3.5 DIA.
SUPPLY	POWER THRU
	THE CURB
		41/2”
	47 1/2”	7 1/2”

ELECTRICAL ENTRANCE AND THRU CURB

LOW VOLTAGE CONTROL WIRING

1.A 24V thermostat must be installed for unit operation. It may be purchased with the unit or field -supplied. Thermostats may be programmable or electromechanical as required.

2.Locate thermostat or remote sensor in the conditioned space where it will sense average temperature. Do not locate the device where it may be directly exposed to supply air, sunlight or other sources of heat. Follow installation instructions packaged with the thermostat.

3.Use #18 AWG wire for 24V control wiring runs not exceeding 75 feet. Use #16 AWG wire for 24V control wiring runs not exceeding 125 feet. Use #14 AWG wire for 24V control wiring runs not exceeding 200 feet. Low voltage wiring may be National Electrical Code (NEC) Class 2 where permitted by local codes.

4.Route thermostat wires from sub-base terminals to the unit. Control wiring should enter through the condenser panel opening indicated in “Electrical Entrance Locations” figure. Connect thermostat and any accessory wiring to low voltage terminal block TB1 in the main control box.

NOTE: Field-supplied conduit may need to be installed depending on unit/curb configuration. Use #18 AWG solid conductor wire whenever connecting thermostat wires to terminals on sub-base. DO NOT use larger than #18 AWG wire. A transition to #18 AWG wire may be required before entering thermostat sub-base.

TERMINAL	THERMOSTAT
Red	R (24V)
Green	G (Fan)
Orange	O (Rev. Valve)
White	W1 (Heat, 2nd)*
Brown	W2 (Heat 3rd)*
Yellow	Y (Cool)
C (Blue)	C (Common)

*Optional field installed heat connections

CPC/H 036 THROUGH 072

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