York G8C05012(MU,MD)B12 User Manual (English)

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TECHNICAL GUIDE

80 AFUE

MULTI-POSITION

GAS FURNACES

MODELS: G8C SERIES

4-POSITION

50-125 MBH INPUT

3-POSITION

150 MBH INPUT

EFFICIENCY

RATING

CERTIFIED

ISO 9001

Certified Quality

Management System

270844-YTG-A-0407

FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE

DESCRIPTION

These compact units (31-1/2" high) employ induced combus-

tion, reliable electronic ignition and high heat transfer heat

exchangers. The units may be factory shipped for upflow/hor-

izontal application and converted for downflow application.

These units may also be factory shipped for downflow appli-

cation and converted for upflow/horizontal applications

Note: The 150 MBH input model is upflow/horizontal only and

may not be converted to the downflow position.

These furnaces are designed for residential installation in a

basement, closet, alcove, attic, or garage. All units are factory

assembled, wired and tested to assure safe dependable and

economical installation and operation.

These units are Category I listed and may be common vented

with another gas appliance as allowed by the National Fuel

Gas Code.

WARRANTY

20-year limited warranty on the heat exchanger.

5-year limited parts warranty.

FEATURES

• 4-position (MU) upflow models allow horizontal-left, hori-

zontal-right, downflow and convertible applications

• 4-position (MD) models allow downflow and convertible

upflow/horizontal applications

• 3-position (UH) 150 MBH input model allows upflow, hori-

zontal-left and horizontal-right application

• Reliable, hot surface ignitor

• Integrated control module for simplicity and reliable, eco-

nomical operation

• Built-in self-diagnostics with fault code display

• 100% shut off main gas valve for added safety

• Rollout safety control

• Low unit amp requirement for easy application

• High quality inducer motor for quiet operation

• 40 VA, fuse protected control transformer

• Terminals for controlling humidifiers and EAC’s

• Easy to connect power and control wiring

• Efficiency ratings of 80 AFUE

• Cooling blower relay supplied for easy installation of add-

on cooling

• Blower off-delay for cooling SEER improvement

• Multi-speed PSC, direct-drive blower motors to match

cooling requirements

• Adjustable fan-off settings to eliminate "cold-blow"

• Compact 31-1/2-in height allows installation in small space

confines

• All models are propane convertible with factory kit

• Pre-painted exterior provides attractive, durable finish

• Models are not approved for LoNox applications

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York G8C05012(MU,MD)B12 Specifications

General

Model	G8C05012(MU, MD)B12
Type	Gas Furnace
Efficiency Rating	80% AFUE
Blower Type	Multi-speed
Fuel Type	Natural Gas
Installation Type	Upflow/Horizontal
Blower Motor	PSC
Gas Valve	Single Stage
Heat Exchanger	Aluminized steel
Weight	120 lbs
Heating Capacity	50, 000 BTU
Ignition	Hot surface
Vent Size	4 inches