Carrier · Infinity 97 (59TN7A) · Model
Carrier Infinity 97 59TN7A 120C24–22
The 59TN7A 120C24–22 is the largest Infinity 97: 120,000 BTU/h input, 78,000 BTU/h on low fire, 116,000 BTU/h output on high, 97.0% AFUE upflow, in a 24.5-inch cabinet with six burners. It is a specialist size for genuinely large houses.
Rating plate
- Model
- 59TN7A 120C24–22
- Input
- 78,000 – 120,000 BTU/h
- Output
- 75,000 – 116,000 BTU/h
- AFUE
- 97% upflow · 95% down/horiz
- Burner
- Two-stage
- Blower
- ECM, constant airflow
- Fuel
- Natural gas / Propane
- Cabinet
- 35 × 24.5 × 29.5 in
- Canada
- Available in Canada
The top of the Infinity 97 family delivers 116,000 BTU/h on high fire from 120,000 BTU/h of input, with low fire at 78,000 BTU/h input and 75,000 BTU/h output. Carrier certifies 97.0% AFUE upflow, 96.7% horizontal and 95.0% downflow for this size, tying the 080C21–20 for the family's best horizontal figure.
The 24.5-inch, 195 lb cabinet with six burners and a 1 HP communicating constant-airflow blower (2,190 CFM of cooling airflow at 0.5 in. w.c.) needs a mechanical room and a duct system built for it. Carrier lists a maximum draw of 11.9 A and a 20 A maximum breaker for this size.
In the Lower Mainland this size belongs to genuinely large or poorly insulated houses whose heat-loss calculation supports it. Carrier's product data is explicit that oversizing can cause premature furnace and vent failure; the calculation decides, not the old furnace's rating plate.
Specifications
From Carrier's published product data. Input and output are listed separately; AFUE depends on installation position.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input, high heat | 120,000 BTU/h | |
| Input, low heat | 78,000 BTU/h | |
| Output | ||
| Output capacity, high heat | 116,000 BTU/h | Carrier product data; DOE test procedure, position dependent. |
| Output capacity, low heat | 75,000 BTU/h | |
| Efficiency | ||
| AFUE, upflow | 97 % | |
| AFUE, horizontal | 96.7 % | |
| AFUE, downflow | 95 % | |
| Airflow | ||
| Certified temperature rise, high heat | 40 – 70 °F (22 – 39 °C) | |
| Certified temperature rise, low heat | 30 – 60 °F (17 – 33 °C) | |
| Airflow, high heat @ rated ESP | 2,014 CFM | |
| Airflow, low heat @ rated ESP | 1,495 CFM | |
| Cooling airflow @ 0.5 in. w.c. | 2,190 CFM | |
| Cooling capacity match | 5.5 tons @ 400 CFM/ton; 6 tons @ 350 CFM/ton | |
| Blower motor | Communicating variable-speed, constant-airflow (VCA) ECM | Measures and holds the airflow the control requests. |
| Physical | ||
| Cabinet width | 24.5 in | 622 mm |
| Cabinet depth | 29.5 in | |
| Approximate shipping weight | 195 lb | 88.5 kg |
| Cabinet height | 35 in | 889 mm |
| Installation positions | Upflow, downflow, horizontal left, horizontal right | |
| Venting | ||
| Venting | Direct vent (2-pipe), single-pipe, or ventilated combustion air | Maximum equivalent vent length depends on size, pipe diameter and altitude; see installation instructions. |
| Electrical | ||
| Blower motor | 1 HP | |
| Maximum unit amps | 11.9 A | |
| Maximum fuse / breaker | 20 A | |
| Electrical supply | 115 V, 60 Hz, 1 phase (104 – 127 V) | |
| Controls | ||
| Burner staging | Two-stage (low and high fire) | |
| Other | ||
| Burners | 6 | |
| Inducer | Two-speed | |
| Fuel | Natural gas; propane with gas conversion accessory kit | |
Filters, serial numbers and service parts
Filter
- Field-supplied filter; certified watt data uses Carrier media filter 325531-40
Components this family's service documentation covers
- Hot-surface ignitor
- Flame sensor
- Pressure switches (LPS/HPS)
- Inducer motor
- Condensate trap and drain components
- Constant-airflow ECM blower
- Control board
Service-parts list source: Components documented for service in 59TN7A-01SI.
Warranty coverage, registered or not
- Registered
- 10-year parts and lifetime limited heat exchanger warranty
- Not registered
- Default 5-year parts and 20-year heat exchanger limited warranty
As published by the manufacturer. Source. Conditions and exceptions are in the warranty certificate.
Fault codes this model can show
Best for
- Large detached houses and older homes with high verified design heat loss
- Communicating Infinity systems in houses whose ducts move 2,000+ CFM
- Replacements where the heat-loss calculation confirms the capacity
Compatible controls
- Communicating Infinity system with Infinity Control, Infinity zoning and Infinity cooling
- 3-digit display showing fault codes and furnace status, with NFC setup via the Carrier service technician app
- RAT and SAT thermistor connections for temperature rise
System integrations
- Infinity air conditioner or heat pump (dual-fuel) with communicating control
- Infinity zoning for single- and multiple-zone systems
- Field-supplied filter or optional media filter cabinet
Warranty, as published
Default 5-year parts limited warranty and 20-year heat exchanger limited warranty; 10-year parts and lifetime limited heat exchanger warranty with timely registration.
Register within 90 days of original installation, except in jurisdictions where warranty benefits cannot be conditioned on registration. Original purchaser/homeowner only; see the warranty certificate. Source
BC Wide can help with registration and warranty enquiries for furnaces it installs or services. Ask about warranty support.
Manuals, codes and service
Documents
Fault codes that apply
- Code 31: high-heat pressure switch (HPS) open or slow to close
- Code 10: rapid flash - L1 polarity fault
- Code 12: W on at power up
- Code 13: limit lockout or ignition lockout
- Code 14: flame-loss lockouts during a heat request
- Code 21: 24 VAC sensed on the gas valve when it shouldn't be
- Code 22: false flame
- Code 23: pressure switch stuck closed
- Code 24: fuse fault
- Code 25: control program and configuration faults
- Code 27: super plug or control program fault
- Code 32: open main pressure switch (LPS)
- Code 43: HPS closed before LPS
- Code 45: control failure
- Code 52: supply-air temperature sensor open or short
- Code 53: return-air temperature sensor open or short
- Code 15: blower RPM lockouts
- Code 41: blower RPM not detected
- Code 51: outdoor-air temperature sensor open or short
- Code 33: a switch has opened in the main limit circuit
- Code 34: ignition fault or flame lost after ignition
BC Wide service
This catalogue page is reference information for anywhere in Canada. On-site service for this model is available across Greater Vancouver from BC Wide's Burnaby base — see furnace service in Burnaby and all service areas.
Questions people ask
Which is bigger, the Infinity 97 or the Infinity 98?
At the same cabinet sizes the Infinity 98 (59MN7C) adds a modulating burner and variable-speed inducer on top of the communicating platform; the Infinity 97 is two-stage. Capacity ranges overlap, so the choice is about staging and price, not size.
Does this size need a 20-amp circuit?
Carrier's product data lists a 20 A maximum fuse or circuit breaker with 12 AWG minimum wire for the 120C24–22. The electrician confirms on site.
Considering the 59TN7A 120C24–22?
Get a published ballpark range for a supply-and-install, then a consultation to confirm sizing from a heat-loss assessment. Equipment-only pricing is not offered on this site.