Blower Data | Lennox International Inc G61MP guide

BLOWER DATA

G61MP−36B−045 PERFORMANCE (Less Filter)

External Static					Air Volume / Watts at Different Blower Speeds
External Static
Pressure			High			Medium−High			Medium−Low			Low
in. w.g.	Pa	cfm	L/s	Watts	cfm	L/s	Watts	cfm	L/s	Watts	cfm	L/s	Watts

0.00	25	1555	735	630	1410	665	585	1190	560	520	1030	485	435
0.10	25	1515	715	605	1385	655	555	1190	560	485	1020	480	415
0.20	50	1470	695	580	1345	635	520	1170	550	455	1010	475	400

0.30	75	1410	665	555	1310	620	495	1155	545	440	1000	470	385
0.40	100	1350	640	535	1250	590	465	1120	530	410	980	465	360
0.50	125	1290	610	505	1205	570	450	1080	510	390	950	450	345

0.60	150	1220	575	485	1145	540	420	1020	480	365	905	430	320
0.70	175	1145	540	460	1080	510	400	975	460	345	860	405	300
0.80	200	1050	495	425	985	465	365	870	410	320	785	370	285
0.90	225	945	445	410	900	425	345	825	390	305	730	345	270

NOTES −	All air data is measured external to unit without filter (not furnished − field provided).
	Air volume based on bottom air return air. Actual air volume may vary on side return air applications.

G61MP−36B−070 PERFORMANCE (Less Filter)

External Static					Air Volume / Watts at Different Blower Speeds
External Static
Pressure			High			Medium−High			Medium−Low			Low
in. w.g.	Pa	cfm	L/s	Watts	cfm	L/s	Watts	cfm	L/s	Watts	cfm	L/s	Watts

0.00	0	1640	775	660	1415	665	575	1160	545	485	1005	475	410
0.10	25	1600	755	635	1395	660	550	1160	545	460	1000	470	385
0.20	50	1540	725	605	1370	650	525	1160	545	445	995	470	375

0.30	75	1495	705	580	1345	635	505	1145	540	425	990	465	365
0.40	100	1420	670	545	1275	605	480	1125	530	395	965	455	345
0.50	125	1360	640	525	1245	590	450	1080	510	375	945	445	325

0.60	150	1275	600	490	1165	550	410	1025	485	350	900	425	305
0.70	175	1170	555	465	1085	515	385	965	430	335	860	405	295
0.80	200	1080	510	440	1010	475	360	865	410	310	775	365	270
0.90	225	945	445	400	840	395	320	765	360	275	710	335	245

NOTES −	All air data is measured external to unit without filter (not furnished − field provided).
	Air volume based on bottom air return air. Actual air volume may vary on side return air applications.

G61MP−48C−090 PERFORMANCE (Less Filter)

External Static						Air Volume / Watts at Different Blower Speeds
External Static
Pressure			High				Medium−High			Medium−Low			Low
in. w.g.	Pa	cfm	L/s	Watts		cfm	L/s	Watts	cfm	L/s	Watts	cfm	L/s	Watts

0.00	0	2180	1030	930		1835	865	790	1520	715	630	1280	605	510
0.10	25	2135	1005	885		1825	860	750	1510	710	610	1275	600	495
0.20	50	2085	985	840		1810	855	720	1505	710	580	1270	600	475

0.30	75	2030	955	800		1775	835	685	1500	705	565	1265	595	460
0.40	100	1940	915	760		1735	820	650	1480	700	535	1250	590	440
0.50	125	1865	880	725		1660	785	600	1430	675	505	1215	575	425

0.60	150	1740	820	670		1590	750	575	1380	650	475	1175	555	410
0.70	175	1645	775	640		1475	695	520	1290	610	450	1105	520	375
0.80	200	1540	725	600		1340	630	465	1175	555	405	1020	480	355
0.90	225	1335	630	540		1170	555	440	1070	505	375	950	450	330

NOTES −	All air data is measured external to unit without filter (not furnished − field provided).
	Air volume based on bottom air return air. Actual air volume may vary on side return air applications.
G61MP−48C−110 PERFORMANCE (Less Filter)

External Static						Air Volume / Watts at Different Blower Speeds
Pressure			High				Medium−High			Medium−Low			Low
Pressure			High				Medium−High			Medium−Low			Low
in. w.g.	Pa	cfm	L/s	Watts		cfm	L/s	Watts	cfm	L/s	Watts	cfm	L/s	Watts

0.00	0	2160	1020	880		1880	890	755	1490	705	602	1235	580	485
0.10	25	2100	990	850		1855	875	730	1480	700	585	1230	580	475
0.20	50	2035	960	805		1815	860	690	1475	695	560	1225	580	460

0.30	75	1965	925	750		1755	830	650	1475	695	545	1220	575	445
0.40	100	1885	890	725		1715	810	625	1465	690	510	1215	575	430
0.50	125	1780	840	680		1630	770	580	1420	670	490	1150	540	400

0.60	150	1690	800	660		1550	735	550	1360	640	460	1110	525	380
0.70	175	1575	745	620		1410	665	505	1210	570	405	1035	490	350
0.80	200	1375	650	550		1230	580	450	1125	530	380	970	460	325
0.90	225	1225	580	520		1120	530	415	1050	495	365	885	420	310

NOTES −	All air data is measured external to unit without filter (not furnished − field provided).
	Air volume based on bottom air return air. Actual air volume may vary on side return air applications.

Page 4

Image 4

Lennox International Inc specifications Blower Data, G61MP−36B−045 Performance Less Filter

G61MP specifications

Lennox International Inc. has long been a leader in HVAC solutions, and the G61MP gas furnace exemplifies the company's commitment to innovation and energy efficiency. This high-efficiency gas furnace operates with an Annual Fuel Utilization Efficiency (AFUE) of up to 96%, allowing homeowners to save significantly on energy costs while maintaining a comfortable indoor environment.

One of the primary features of the G61MP is its modulating gas valve. This technology enables the furnace to operate at multiple levels of heating output, ensuring that it can adjust its performance according to the home’s heating demands. By modulating the heating output, the G61MP maximizes efficiency and minimizes energy waste, providing a consistent temperature and improved comfort.

The G61MP also incorporates advanced two-stage heating, which enhances its performance by reducing temperature fluctuations in the home. This feature is especially beneficial during transitional weather periods when heating needs may vary widely. With its ability to operate on a lower stage most of the time, the furnace can produce quieter operation and reduced energy consumption.

In terms of design, the G61MP includes a sealed combustion chamber that draws air from outside the home for combustion, enhancing safety and efficiency. This design feature eliminates the need for indoor air, improving indoor air quality. The furnace is also equipped with a high-efficiency ECM blower motor that not only boosts comfort but operates quietly and uses less electricity compared to traditional motors.

Further enhancing its efficiency, the G61MP utilizes a variable-speed blower, which allows for precise control of airflow throughout the home. This results in better humidity control and improved air distribution, providing an overall more comfortable environment.

The Lennox G61MP is compatible with the iComfort S30 smart thermostat, allowing homeowners to control their heating remotely, adjust settings based on their schedules, and access energy usage data. This connectivity transforms the G61MP into an integral part of a smart home ecosystem, facilitating energy conservation and comfort optimization.

Lastly, the G61MP is designed with durability in mind. Its robust construction and high-quality materials ensure reliable performance and lengthy service life. Homeowners can feel assured that they are investing in a heating solution that will meet their needs for many winters to come. In summary, the Lennox G61MP gas furnace stands out with its high efficiency, advanced technology, and user-friendly features, making it a top choice for homeowners seeking exceptional heating performance.

Contents

Table of Contents G61MP Optional Accessories − Must be Ordered Extra SpecificationsAfue Direct Vent Blower Data G61MP−36B−045 Performance Less Filter 1495 2340 1285 1385 2410 Glass Assembly G61MP Parts ArrangementTOP CAP Sight Blower Door Interlock Switch S51 Circuit Breaker CB8−Control Box Control Transformer T1 Integrated Control Board A92Page TWO−STAGE Integrated Control Board Integrated Control Board Terminals 120VAC Neutral120VAC Line Integrated Control Board 5 Pin Terminal −Blower Compartment Blower Motor B3 and Capacitor C4 Secondary Limit Controls S21DS1 DS2 Description Supply AIR Blower −Heating Components Flame Sensor IgnitorBurners Figure Ignitor Bracket Burners Front View Burners TOP View Flame Rollout Switches S47 Combustion Air Inducer Prove Switch S18Clamshell Heat Exchanger Primary Limit Control S10 CAI & Cold END Header BOX Assembly Dual Combustion AIR Prove SwitchFirst stage Negative Pressure Second stage Positive Combustion Air Inducer B6 II−PLACEMENT and Installation Outdoor Termination Kits and Corresponding Equivalencies −Vent Piping Guidelines Minimum Vent Pipe Lengths −PVC Joint Cementing ProcedureMaximum Vent Pipe Lengths − Venting Practices Upflow or Downflow Direct or NON-DIRECT Vent Applications Typical Exhaust Pipe Connections Direct Vent applications where combustion air is taken From indoors and flue gases are discharged outdoorsReducer Plug Reducer Carbon Monoxide Poisoning Hazard Sweep ELLPage − G61MP Vent Termination − AIR Inlet of Other Appliance Exhaust Pipe Termination Size Reduction Front View Side View Using Existing Chimney ANGLE−CUT in Direction G61MP Direct Vent Application Condensate Piping G61MP NON−DIRECT Vent Application Using Existing ChimneySide View NON−DIRECT Vent Wall Ring Termination Condensate Assembly Vent Nipple TEE Screw Coupling CLEAN−OUT AccessHose clamp −RINGS CAP HI/LO Screws −Preliminary and Seasonal Checks For Your Safety Read Before Operating−Heating Start-Up −Safety or Emergency Shutdown IV−HEATING System Service Checks A−C.S.A. Certification−Testing Gas Piping −Extended Period Shutdown −Testing Gas Supply Pressure −Check Manifold Pressure− Proper Gas Flow Approximate − Proper Combustion − High Altitude − Condensate pH Range −Temperature Rise −Flame Signal−External Static Pressure VI−MAINTENANCE −Blower Speed TapsPage Page VII− Wiring and Sequence of Operation Sequence of Operation On Next Heating Sequence of Operation See BOX a LOW Flame Signal YES Normal Operation DS1 and DS2 Simultaneous Slow Flash YES EN or Heat Demand is SATISFIED. a Five Cooling Sequence of Operation Continuous LOW Speed FAN Sequence of Operation Single VIII− Field Wiring Applications and Jumper SettingsTWO Cool Transformer − Both diagnostic lights fail to light up LED#2−Off Miswiring of furnace or improper conDoor interlock switch failure − Diagnostic lights flash the roll−out Uous fan demand Primary, secondary or backup secon − Diagnostic lights flash the limit failure modeLED#1−Slow Flash Miswiring of furnace or improper Connections at limit switches Switch failure code 2.5 minutes after LED#1−Off Prove switch lines damagedCondensate in prove switch line Prove switch does not close due to a Terminating the unit − Diagnostic lights flash the pressure Switch codeWith a heating demand Installed − After 5 tries the control diagnostics − Roll−out switch trips during − Diagnostic lights flash roll−out failFails to stay lit Operation. Problem is characterized − Combustion air inducer energizes Mode Er motor Nostic lights flash low flame sense BurnerLED#1−Slow Flash Sensor rod is contaminated Service Notes