Goodman Mfg IO-354B installation instructions Belt Drive Models only

TOOLS REQUIRED

Refrigeration gauge and manifold Voltmeter

Clamp-on ammeter Ohmmeter

Test lead

(Minimum #16 AWG with insulated alligator clips) Air temperature measuring device

General refrigeration mechanics’ tools

TEMPORARY HEATING OR COOLING

If the unit is to be used for temporary heating or cooling, a “Startup, Adjustments, and Checks” must first be performed in accordance with this manual. Failure to comply with this requirement will void the warranty. After the machines are used for temporary heating or cooling, inspect the coils, fans, and motors for unacceptable levels of construction dust and dirt and install new filters.

CONTRACTOR RESPONSIBILITY

The installing contractor must be certain that:

•All supply and return air ductwork is in place and corresponds with installation instructions.

•All thermostats are mounted and wired in accordance with installation instructions.

•All electric power, all gas, hot water or steam line connections, and the condensate drain installation have been made to each unit on the job. These main supply lines must be functional and capable of operating all units simultaneously.

ROOF CURB INSTALLATION CHECK

Inspect the roof curb for correct installation. The unit and curb assembly should be level. Inspect the flashing of the roof mounting curb to the roof, especially at the corners, for good workmanship. Also check for leaks around gaskets. Note any deficiencies in a separate report and forward to the contrac- tor.

OBSTRUCTIONS, FAN CLEARANCE AND WIRING

Remove any extraneous construction and shipping materi- als that may be found during this procedure. Rotate all fans manually to check for proper clearances and that they rotate freely. Check for bolts and screws that may have jarred loose during shipment to the jobsite. Retighten if necessary. Re- tighten all electrical connections.

PRE-STARTUP PRECAUTIONS

It is important to your safety that the unit has been properly grounded during installation. Check ground lug connection in main control box for tightness prior to closing circuit breaker or disconnect switch. Verify that supply voltage on line side of disconnect agrees with voltage on unit identification plate and is within the utilization voltage range as indicated in Ap- pendix C Electrical Data.

System Voltage - That nominal voltage value assigned to a circuit or system for the purpose of designating its voltage class.

Nameplate Voltage - That voltage assigned to a piece of equipment for the purpose of designating its voltage class and for the purpose of defining the minimum and maximum voltage at which the equipment will operate.

Utilization Voltage - The voltage of the line terminals of the equipment at which the equipment must give fully satisfac- tory performance. Once it is established that supply voltage will be maintained within the utilization range under all sys- tem conditions, check and calculate if an unbalanced condi- tion exists between phases. Calculate percent voltage un- balance as follows:

Three Phase Models Only

		2) MAXIMUM VOLTAGE DEVIATIONS
3) PERCENT VOLTAGE	= 100 X		FROM AVERAGE VOLTAGE
UNBALANCE			1) AVERAGE VOLTAGE

HOW TO USE THE FORMULA:

EXAMPLE: With voltage of 220, 216, and 213

1)Average Voltage = 220+216+213=649 / 3 = 216

2)Maximum Voltage Deviations from Average Voltage = 220 - 216 = 4

3) Percent Voltage Unbalance = 100 x	4	=	400	= 1.8%
	216		216

Percent voltage unbalance MUST NOT exceed 2%.

FIELD DUCT CONNECTIONS

Verify that all duct connections are tight and that there is no air bypass between supply and return.

FILTER SECTION CHECK

Remove filter section access panels and check that filters are properly installed. Note airflow arrows on filter frames.

BELT DRIVE MODELS ONLY

BEARING CHECK

Prior to energizing any fans, check and make sure that all setscrews are tight so that bearings are properly secured to shafts.

For heat pump units, the airflow must be adjusted so that the air temperature rise falls within the ranges given stated on Data Plate (see Appendix A - Blower Performance).

TENSION AND ALIGNMENT ADJUSTMENT

Correct belt tension is very important to the life of your belt. Too loose a belt will shorten its life; too tight, premature mo- tor and bearing failure will occur. Check you belt drive for adequate “run-in” belt tension by measuring the force required to deflect the belt at the midpoint of the span length. Belt tension force can be measured using a belt tension gauge, available through most belt drive manufacturers.

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