York G8C05012MUB12 User Manual

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
036-21120-002 Rev. A (1102)
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
• Pre-painted exterior provides attractive, durable finish
• Models are not approved for LoNox applications

York G8C05012MUB12 Specifications

General

Model	G8C05012MUB12
Type	Gas Furnace
Heating Capacity	50, 000 BTU
Efficiency Rating	80% AFUE
Blower Motor	Multi-speed
Fuel Type	Natural Gas
Stages	Single Stage

Summary

YORK G8C Series Gas Furnace Overview

Product Description

Details the compact, induced-combustion gas furnaces with reliable ignition and heat exchangers.

Warranty Information

Outlines the 20-year heat exchanger and 5-year limited parts warranty for the furnaces.

Key Features

Lists key features like multi-positionality, hot surface ignitor, and self-diagnostics.

YORK G8C Series Furnace Specifications

Furnace Dimensions

Provides physical dimensions for various G8C series furnace models.

Ratings and Electrical Data

Lists key performance ratings, electrical data, and physical characteristics for G8C furnaces.

Blower Performance Data

Single Side Return Blower Performance

Presents blower performance data for single side return configurations.

Dual Return Blower Performance

Presents blower performance data for dual return configurations.

Filter and Cooling System Integration

Bottom End Return Blower Performance

Provides blower performance data for bottom end return configurations.

Recommended Filter Size and Add-on Cooling

Specifies filter sizes and compatible add-on cooling capacities.

Filter Pressure Drop Calculations

Filter Performance by Type and Size

Details filter pressure drop based on type, size, and airflow.

Determining System Airflow with Filters

Provides a method to calculate system airflow considering filter pressure drop.

Installation Clearances and Accessories

Unit Clearances to Combustibles

Specifies required clearances from combustibles for various installation applications.

Accessory Kits

Lists available accessory kits for propane conversion and external filter racks.