Air Flow Adjustments - Amana APG16 M Series Installation Instructions Manual

Single package gas-electric heating & cooling unit

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Table of Contents

Prior to the beginning of Startup, Adjustments, and Checks

procedures, the following steps should be completed in the

building.

MOVING MACHINERY HAZARD!

To prevent possible personal injury or death, disconnect

power to the unit and padlock in the "OFF" position before

servicing fans.

This unit is equipped with an electronic ignition device to

automatically light the main burners. It also has a power

vent blower to exhaust combustion products.

On new installations, or if a major component has been

replaced, the operation of the unit must be checked.

Check unit operation as outlined in the following

instructions. If any sparking, odors, or unusual sounds

are encountered, shut off electrical power and recheck for

wiring errors, or obstructions in or near the blower motors.

Duct covers must be removed before operating unit.

The Startup, Adjustments, and Checks procedure provides

a step-by-step sequence which, if followed, will assure the

proper startup of the equipment in the minimum amount of

time. Air balancing of duct system is not considered part

of this procedure. However, it is an important phase of any

air conditioning system startup and should be performed

upon completion of the Startup, Adjustments, and Checks

procedure. The Startup, Adjustments, and Checks

procedure at outside ambients below 55°F should be

limited to a readiness check of the refrigeration system with

the required final check and calibration left to be completed

when the outside ambient rises above 55°F.

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. Damage or repairs due to

failure to comply with these requirements are not covered

under 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, properly

sealed, 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.

WARNING

• Requirements are met for venting and combustion air.

• Air filters are in place.

• Input rate and temperature rise are adjusted per rating

plate.

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 contractor.

Obstructions, Fan Clearance and Wiring

Remove any extraneous construction and shipping

materials 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 job site. Re-

tighten if necessary. Re-tighten all electrical connections.

Field Duct Connections

Verify that all duct connections are tight and that there is no

air bypass between supply and return.

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 Appendix B 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

satisfactory performance. Once it is established that supply

voltage will be maintained within the utilization range under

all system conditions, check and calculate if an unbalanced

condition exists between phases. Calculate percent voltage

unbalance as follows.