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7

BEFORE YOU CALL FOR SERVICE,

CHECK FOR PROBLEMS

THAT CAN BE EASILY SOLVED

If insufficient heating or cooling is suspected:

(

) Check for sufficient airflow. Check the air filter for dirt.

Check for blocked return or supply-air grilles. Be sure they are

open and unobstructed. If these checks do not reveal the cause,

call your servicing dealer.

If your unit is not operating at all, check the following list

for easy solutions:
( ) Check BACview display to be sure unit has not been dis-

abled. Check set points are properly set.
( ) Is the electrical supply switch ON? Are any fuses blown

or has the circuit breaker tripped?
( ) During the heating season, check the external manual

shutoff valve. Is this lever parallel with the pipe, indicating that

the valve is open? Or is the lever at the right angle, indicating

that the valve is closed? If closed, has the gas been shut off for

safety reasons? Otherwise, you may open the valve and follow

the start-up procedures listed in this manual.

NOTE: Before proceeding with the next check, turn OFF the

electrical power supply to the unit. Remove the gas section

access panels.
( ) During the heating season, check the switch on the gas

valve. Is it in the ON position? If it is not, be sure it has not

been turned off for the purpose of safety. If no safety hazards

are present, follow the start-up procedures in this manual.
( ) If your unit still fails to operate, call your servicing dealer

for troubleshooting and repairs. Specify the model and serial

numbers of your unit. (Record them in this manual in the space

provided.) If the dealer knows exactly which unit you have,

he may be able to offer suggestions over the phone, or save

valuable time through knowledgeable preparation for the

service call.

IN CASE OF TROUBLE

If, after performing the above checks, unit performance is

unsatisfactory, shut off the unit and call your dealer.
Dealer’s Name _____________________________________
Telephone No. _____________________________________
Unit Model _______________________________________
Unit Serial Number _________________________________

Summary of Contents for 62DA

Page 1: ...l is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life Do not store or use gasoline or other flammable vapors and liquids in the vicinity of t...

Page 2: ...CONTR OL PANEL OUTS IDE AIR INTAK E HOOD CONDENSATE DR AIN PAN GAS SECTION GAS VALVE MODULATING GAS VALVE OPTIONAL MAIN BURNER SECTION FLAME ROLLOUT SWITCH Fig 1 Typical Gas Section Fig 2 Typical Gas...

Page 3: ...T N A T ON OFF N A T N A T ON OFF STEP 1 Fig 3 To Light Unit STEP 5 STEP 4 STEP 3 STEP 2 STEP 7 STEP 6 STEP 10 STEP 8 STEP 9 a48 924tf a48 925tf a48 930tf a48 931tf a62 420 a62 424 a62 425 a62 426 a6...

Page 4: ...the BACview controller to ensure operation of the cooling system during the cooling season Do not use this unit if any part has been under water Imme diately call a qualified service technician to in...

Page 5: ...ers always use the same size and type of filter that was originally supplied by the installer Heat Exchanger To ensure dependable and efficient heating operation the heat exchanger should be checked b...

Page 6: ...l your dealer 7 Replace gas section access panels Unit Panels After performing any maintenance or service on the unit be sure all panels are securely fastened in place to prevent rain from entering un...

Page 7: ...art up procedures listed in this manual NOTE Before proceeding with the next check turn OFF the electrical power supply to the unit Remove the gas section access panels During the heating season check...

Page 8: ...ht to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53620003 01 Printed in U S A Form 62D 1SO Pg 8 1 09 Replaces New Copyri...

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