G61MPV UNIT INFORMATION SERVICE LITERATURE PDF

Exhaust Pipe Venting Information . Manual reset switches are factory installed on burner box. after unit lockout, eliminating nuisance calls for service. Repair Parts List. 69 Refer to Engineering Handbook for additional information. **Consider . G61MPV units are CSA International certified to ANSI. Z Installation and service must be per- formed by a information, consult material safety data sheets available shut off the manual gas valve to the furnace before shutting off . G61MPV units are equipped with a SureLight® ignition sys- tem.

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The longer the pulse, the faster the motor. Insert manometer hose flush with inside edge of hole or insulation. Off Y1 Humidity level above setpoint. All access panels and covers must be in place and secured.

Thermostat jumper E20 dictates which mode unit informatiin operate in. Remove screws that secure condensate collars to either side of the furnace and remove collars.

Service Literature

Soap solutions can be corrosive. If the total equivalent length required exceeds the maximum equivalent length listed in the appropriate table, evaluate the next larger size pipe.

All G61MPV blower motors use single phase power. A digital readout meter must be used. The pH scale is a measurement of acidity and alkalinity. The thermostat selection is made using a dip switch figure 4 and must be positioned for the particular application. The table below provides blower speed adjustments that will result from different switch settings. Visually inspect the inside of the burners and crossovers for any blockage caused by foreign matter.

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Hammer blows should not be used when inserting pipe. This allows for precise control of motor speed and allows the motor to compensate for varying load conditions as sensed by the controller. Gas Valve GV1 8. The shutdown feature provides protection in case of a frozen bearing or blocked blower wheel. When Harmony is used, speed taps are overridden and a PWM signal generated by the Harmony controller continuously varies motor speed based upon zone demands.

If rod is to be cleaned, use steel wool or replace sensor. Lack of differential usually indicates ure With fan switch in AUTO position, blower cycles with demand or runs continuously while heating or cooling circuit cycles.

G61MPV Service Literature G61MPV SERIES UNITS |

The following scale shows the relative pH of some common liquids as compared with condensate of G61MPV units. Indoor blower speed reduced by CCB1 control.

Disconnect power servicw servicing. Exhaust piping exits from the top of the unit in horizontal air discharge applications. All horizontal runs of exhaust pipe must slope back toward unit.

The breaker can be manually reset by pressing loterature button on the face. The blower off delay affects comfort and is adjustable to satisfy individual applications. Replace control if caps are swollen or bulging.

If manifold pressure is correct and the unit input rate is incorrect, check gas orifices for proper size and restriction. S acts as a backup to primary limit S10 in the event of an indoor blower failure.

Make sure segvice 7. Diagnostic lights flash the pressure switch failure code. Maximum vent length is defined as: The controller is primarily an AC to DC converter.

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Service Manuals | Engineering Documents | Commercial HVAC | Lennox Commercial

During operation, flame is sensed by current passed through the flame and sensing electrode. TV interference may be stopped by making sure the motor is solidly grounded to the cabinet metal to metal and by making sure the cabinet is solidly grounded.

The cooling mode blower speed ramping options are detailed on Page All G61MPV units are equipped with two sec- stays on is called the pulse width. Page 64 12″ mm MAX. Resistance between any 2 contacts should be equal.

Ohm value for ignitors with SureLight board 49M59 should be It may be necessary to cut the exiting exhaust pipe for removal of the fittings. Refer to table Determine the time in seconds for one revolutions of gas litearture the meter.

This amount of power is used for cycles. Turn on power to unit.

Lennox G61MPV Service Manual

informqtion The switch is factory set and cannot be adjusted. Don’t show me this message again. None Humidity level is slightly 1 above setpoint. Rollout can be caused by a blocked heat exchanger, flue or lack of combustion air. No further lubrication is needed. Disconnect 2-pin plug from the ignitor at the burner box.

When excess heat is sensed in the heat exchanger, the limit will open. The cooling mode blower speed ramping options are detailed below.