Assessments - 4, GPA: 4.8
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Facilidade de uso
Use adjusting screw under screw cap on pilot valve for this purpose. For D4 controls, flame should be long enough for good impingement on metal element of Bryant automatic pilot For D5 and D2 controls, flame should surround thermocouple element of pilot and extend downward to include 3/8 to 1/2 inch of thermocouple. Flame should never come in contact with any other part of thermocouple or its lead wire. To adjust pilot flame on units equipped with a Model A-643 valve, adjustment screw is located in pilot outlet portion of valve body. Remove capscrew, make necessary adjustment, and replace capscrew. 3* Check input. Input should be checked at meter to make sure that it corresponds with input shown on rating plate attached to unit* See Bryant form No. 39003D 1 for method* 4. Final Checkout- Move thermostat setting ..above_ “and ~b'eTbw~ room' temp ei'ature_sSv6iial “timesnj auaing-between each “on” and “off" cycle to make sure that main burners ignite properly. ~Attffch^”luw^vo'ltage-tesHight-to-electtieal-leads-of-gas valve. With thermostat set above room tern-.per.atuxg,. fiJLosg. manual pilot valve- If light goes out when pilot cools, pilot is functioning properly. The test light should go out within 45 seconds after pilot ga? Ripply is turned off. Check the operation of temperature limit control. This can be done by allowing burners to operate while fan is not running to. see that limit switch opens. Check all connections in the gas piping for leaks. Use a soap-and-water solution. WARNING: Never use a flame to check for. leaks. VII. SERVICE AND MAINTENANCE 1. Pilot Orifice - is located in bottom fitting of pilot and is readily accessible for inspection and cleaning. 2. Main Burner Orifices - The orifice is readily unscrewed from manifold after burner is removed, 3* Removing Main Burners - Lift rear of burner and push it away from manifold enough to disengage orifice spud from mixer shield. Then pull down and - out of Heater. End of burner away from manifold seats in a slotted burner support. It is necessary to lift burner out of this slot before attempting to push burner back. See Figure S. NOTE: Disconnect the pilot tubing and wires to remove the burner that holds the pilot* However, it is not necessary to remove the pilot itself from the burner. 4. Cleaning - Heat exchanger tubes should be in* specied at regular intervals and cleaned when necessary. a. Shut off gas and electricity. Heater should be cool* b. Disconnect pilot .tube , and wires. ....................... “cT Remove"main "burners' and- pilot. J ^ d. Use stiff brush to scrub heat exchanger tubes. Remove all loose scale and any soot that may have -collected:------- e. Replace burners and pilot. Reconnect pilot tube _and..wires..... ... , ____________________________________ f. Unit is now ready for relighting. 5. Oiling-direct-diive sleeve-bearing blower motors are prelubricated and normally will not need further oiling for approximately 5 years* Lubricating then should be performed by an experienced serviceman as blower assembly will have to be disassembled* Each sleeve bearing on above motors should be oiled with 25 drops of SAE 20 nondetergent motor oil annually after 5 years. Avoid over-oiling* —3— SEP/1 0/2008/WED 09:32 AM UTC TECH PUB FAX No. 317 240 5662 P. 004/006 WIRING DIAGRAMS FOR SIZES 150 & 200 IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED, IT MUST BE REPLACED WITH TYPE SFF-2 150C FOR 24-VOLT CIRCUITS AND APPLIANCE WIRING MATERIAL 105C FOR UNE VOLTAGE CIRCUITS, THIS UNIT IS APPROVED FOR 0.25 WC STATIC 55D -FACTORY LINE VOLTAGE TO 85“ RISE, SEE INSTALLATION INSTRUCTIONS OR —FACTORY LOW VOLTAGE APPLICATION MANUAL BEFORE CHANGING SPEED---—^ FI ELD LINE VOLTAGE TAPS OR ADDING DUCTWORK, ---FIELD LOW VOLTAGE 1A-TR ANSFORM ER. 2G-BLOWER ' RELAY . ■> • 3D-BLOWEB;.MOTOR:. ' 5A-HEAT MOTOR'-.VALVE.'.... • ' 6A-PILOT SWITCH {OMIT OM PROPANE) 7K-TEMPERATURE' UM1T CONTROL Figure 3 - With 732 Pilot Installed Non 100% Shutoff, Nat. Gas (D4) IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED, IT MUST BE REPLACED WITH TYPE SFF-2 150C FOR 24-VOLT CIRCUITS AND APPLIANCE WIRING MATERIAL 105C FOR LINE VOLTAGE CIRCUITS. THIS UNIT IS APPROVED FOR 0,25 WC STATIC 55° TO 85° RISE, SEE INSTALLATION INSTRUCTIONS OR APPLICATION MANUAL BEFORE CHANGING SPEED TAPS OR ADDING DUCTWORK, - FACTORY LINE VOLTAGE ‘- FACTORY LOW VOLTAGE ---FIELD LINE VOLTAGE ---FIELD LOW VOLTAGE 1A-TRANSFORMER 23-BLOWER RELAY 3D-BLOWER MOTOR 5A-HEAT MOTOR VALVE 6B-733 PILOT (REIGNITION) 7K-TEMPERATURE LIMIT CONTROL 7P-PRESSURE SWITCH SPST 11A-RËSISTOR Figure 4 - With 733 Pilot Installed Automatic Electric Reignition (D1) SEP/l0/2008/WED 09:32 UTC TECH PUB FAX No. 317 240 5662 IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED, IT MUST BE REPLACED WITH TYPE SFF-2 150C FOR 24-VOLT CIRCUITS AND APPLIANCE WIRING MATERIAL 105C FOR LINE VOLTAGE CIRCUITS. TO 05° RISE...
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