Rheem CLASSIC 90 PLUS Manual

Rheem CLASSIC 90 PLUS Manual

Classic 90 plus rgtc series 95% a.f.u.e. downflow/horizontal gas furnaces

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GAS FURNACES
RGTC- SERIES
Models with Input Rates
from 45,000 to 105,000 BTU/HR
[13.19 to 30.77 kW]
(All Models up to 95% A.F.U.E.✝)
CLASSIC
®
95% A.F.U.E.
DOWNFLOW/
HORIZONTAL
GAS FURNACES
The Rheem Classic
®
90 Plus High Efficiency line of down-
flow/horizontal gas furnaces are designed for utility rooms,
closets, alcoves, attics or crawl spaces. The RGTC is
shipped in the downflow configuration and is easily con-
verted for horizontal left-hand airflow applications.
The design is certified by CSA.
Features
Heat exchanger is constructed of all stainless steel for
s
maximum corrosion resistance and thermal fatigue
reliability.
Low profile "34 inch" design is lighter and easier to han-
s
dle and leaves room for optional accessories.
Top electrical connections, left or right gas and conden-
s
sate drainage connections on downflow models.
Condensate drain for horizontal application provided
s
standard.
Integrated control board manages all operational func-
s
tions and provides hookups for humidifier and electronic
air cleaner.
An insulated blower compartment, a slow-opening gas
s
valve and a specially designed inducer system make it
one of the quietest furnaces on the market today.
Pre-paint galvanized steel cabinet.
s
Molded permanent filters.
s
Optional indoor or outdoor combustion air.
s
Transformer and control fuse protection.
s
Control board diagnostics.
s
A variety of cooling coils and plenums designed to use with
the Classic
®
90 Plus gas furnaces are available as optional
accessories for air conditioning models.
✝A.F.U.E. (Annual Fuel Utilization Efficiency) calculated in accordance with Department
of Energy test procedures.
FORM NO. G11-502 REV. 1
Supersedes Form No. G11-502
"Visit www.Rheem.com
for complete details."
90 PLUS

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Questions and answers

Liana J Sears
February 6, 2025

How do we get the panels off the front?

1 comments:
Mr. Anderson
February 10, 2025

To remove the front panel on a Rheem Classic 90 Plus furnace, take off the front panel by removing two quarter-inch screws located in the front. Use a quarter-inch nut driver to unscrew them. Once the screws are removed, the whole unit will slide out. If needed, unplug the wiring and take pictures to ensure proper reassembly.

This answer is automatically generated

MARY WARFORD
February 21, 2025

Does the rheem classic 90 plus have an automatic pilot ?

User image 67b88cd1207c1
1 comments:
Mr. Anderson
February 21, 2025

Yes, the Rheem Classic 90 Plus furnace uses a direct spark ignition system, which means it does not have a traditional standing pilot light but instead has an automatic ignition system.

This answer is automatically generated

Jerry Zitterman
February 28, 2025

Rheem Classic 90 Plus Gas is this furnace a single stage or dual stage I **** purchasing a new thermostat and dont know which type to buy

Summary of Contents for Rheem CLASSIC 90 PLUS

  • Page 1 90 PLUS 95% A.F.U.E. DOWNFLOW/ HORIZONTAL GAS FURNACES The Rheem Classic ® 90 Plus High Efficiency line of down- flow/horizontal gas furnaces are designed for utility rooms, closets, alcoves, attics or crawl spaces. The RGTC is shipped in the downflow configuration and is easily con- verted for horizontal left-hand airflow applications.
  • Page 2: Parts List

    WARNING direct drive, multi-speed blower motor. (Please note: a thermostat is not included as standard equipment.) THIS FURNACE IS NOT APPROVED OR RECOMMENDED FOR USE IN MOBILE HOMES Rheem Heating, Cooling and Water Heating...
  • Page 3: Downflow/Horizontal Models

    105,000 [30.7 kW] [ ] Designates Metric Conversions GENERAL TERMS OF LIMITED WARRANTY Rheem will furnish a replacement for any part of this product Primary and Secondary Heat Exchanger..Limited Lifetime which fails in normal use and service within the applicable Conditional Parts (Registration Required) ..Ten (10) Years...
  • Page 4: Downflow Models

    IMPORTANT NOTE: Horizontal furnace may be installed for horizontal left hand air supply ONLY. The condensate trap provided for horizontal application must be installed in the field beneath the unit as directed in the furnace Installation & Operating Instructions. Rheem Heating, Cooling and Water Heating...
  • Page 5: Horizontal Models

    IMPORTANT NOTE: Horizontal furnace may be installed for horizontal left hand air supply ONLY. The condensate trap provided for horizontal application must be installed in the field beneath the unit as directed in the furnace Installation & Operating Instructions. Rheem Heating, Cooling and Water Heating [ ] Designates Metric Conversions...
  • Page 6: Rgtc Models

    Filters shipped with furnace may be used or a suitable 1" [25.4 mm] filter. optional method may NOT be used for U.S. installations. FOR LEFT SIDE (ALTERNATE) CONDENSATE [ ] Designates Metric Conversions DRAIN KIT: RXGY-H01 (All Models) Rheem Heating, Cooling and Water Heating...
  • Page 7 NOTES Rheem Heating, Cooling and Water Heating...
  • Page 8 Federal, State, Provincial, and Local codes, regulations, and practices. P.O. Box 17010, Fort Smith, AR 72917 “In keeping with its policy of continuous progress and product improvement, Rheem reserves the right to make changes without notice.” PRINTED IN U.S.A. 10-09 DC FORM NO.

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