Instruction/ maintenance manual of the product 350MAV Bryant
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WARNING: ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death, or property damage. Improper servicing could result in dangerous operation, serious indury, death, or property damage.
CSA B149.1-00 (NSCNGPIC) in Canada; and the Installation Standards, Warm Air Heating and Air Conditioning Systems (NFPA 90B) ANSI/NFPA 90B. In Canada, refer to the CAN/CGA-B/49.1- and .2-M95 National Standard of Canada, Natural Gas and Propane Installation Codes (NSCNGPIC).
WARNING: Turn off the gas and electrical supplies to the unit before performing any maintenance or service. Follow the operating instructions on the label attached to the furnace. Failure to follow this warning could result in personal injury or death.
1. Turn off electrical supply to furnace. 2. Remove main furnace door and blower access panel. 3. Disconnect blower motor wires from furnace control. Field thermostat connections may need to be disconnected depending on their length and routing.
7. Remove screws that secure manifold to burner box. (See Fig. 5.) NOTE: Do not remove burner box from cell panel. 8. Remove manifold, orifices, and gas valve as 1 assembly. 9. Remove screws attaching burner assembly in burner box. 10. Remove burner assembly from burner box.
CAUTION: The ground wire from the gas valve MUST be attached to the burner box attachment screw. Failure to attach this ground wire to an adequate casing ground will cause the furnace control to lock out. NOTE: Be sure burner box gasket is installed between burner box and cell panel.
14. Check furnace operation through 2 complete heat operating cycles. Check area below inducer housing, vent pipe, and condensate trap to ensure no condensate leaks occur.
box or inlet pipe, but can be removed without removing either. After removing screw, slide igniter and bracket toward outside of burner box and pull straight out. CAUTION: The igniter is fragile. DO NOT allow it to hit the side of the burner box opening while removing or replacing it.
1. Turn off electrical supply to furnace. 2. Remove main furnace door. 3. Disconnect cap from unused drain tap on inducer housing. (See Fig. 14.) 4. Connect field-supplied 1/2-in.
1. LED flashes a current status code, or code 11, 4 times. Record this status code for further troubleshooting. 2. The inducer will start and continue to run until test is over. 3. Hot surface igniter (HSI) is energized for 15 sec, then de-energized. 4.
A99118 Fig. 14 — Inducer Housing Drain Tube A99119 Fig. 15 — Funnel in Drain and Antifreeze Running Through Trap — 11 —.
Fig. 16 — Wiring Diagram A02157 PCB TRAN FRS NOTE #11 LS PRS (WHE N USED) LGPS FUSED OR CIRCUIT BREAKER DI SCONNEC T SWI TCH ( WHEN REQ ’ D) NOTE #2 JB L1 L1 BLWR HI/LO TO 115V AC FI ELD DISCONNEC.
Fig. 17 — Service Label A02154 SER VI CE To initiate th e component te st sequence, shut OFF the room thermost at or disconnect the "R" therm ostat lead. Briefl y short the TEST/TWIN ter m inal to the "Com 24V" ter- minal. St atus LED will fl ash code and then tur n ON the i nducer moto r .
A02204a Is LED status light on? Is LED status light blinking rapidly without a pause? Is LED status light blinking ON/OFF slowly with a combination of short and long flashes? Determine status code.
A02204b 11 NO PREVIOUS CODE – Stored codes are erased after 72 hours. On RED LED boards stored status codes can also be erased whene ver pow er (115V or 24V) is interrupted. Run system through a heating or cooling cycle to check system. 12 BLOWER ON AFTER POWER UP – (115V OR 24V) – Normal operation.
© 2002 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 — 16 — Printed in U.S.A. sp0558 Catalog No. 5335-207.
An important point after buying a device Bryant 350MAV (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bryant 350MAV yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Bryant 350MAV - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bryant 350MAV you will learn all the available features of the product, as well as information on its operation. The information that you get Bryant 350MAV will certainly help you make a decision on the purchase.
If you already are a holder of Bryant 350MAV, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Bryant 350MAV.
However, one of the most important roles played by the user manual is to help in solving problems with Bryant 350MAV. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bryant 350MAV along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
