MORTEX G18D060AH2AA Technical Manual

SEALED COMBUSTION
DOWNFLOW GAS FURNACE
SIZES: 60, 70, 77, 90
M ODELS :
G18D SERIES
These downflow furnaces are specially designed for
installation in manufactured, (mobile home) or modular
housing. Four heat capacities and three blower choices
handle heating and cooling (up to 5 tons) in any climate.
All blowers are multi-speed to fine tune airflow to the
home ensuring quiet operation, high operating efficiency
and comfort.
FEATURES
HEATING ONLY or HEATING & A/C UNITS
ELECTRONIC IGNITION
SEALED COMBUSTION VENTING
ALUMINIZED STEEL HEAT EXCHANGER
ZERO CLEARANCE TO CONSTRUCTION
BUILT-IN 'A' COIL CABINET – 25-1/2"H ( C cab.)
SHORTER A/C FURNACE-ONLY 77-1/2"H
HOGS HAIR WASHABLE AIR FILTERS
CONTOURED WHITE DOOR PANELS
80 AFUE - AUTOMATIC HOT SURFACE IGNITION
Model No. G18D060AH2AA G18D070AH2AA G18D077AH2AA G18D090AH2AA G18D060CA3AA G18D070CA3AA G18D077CA3AA G18D090CA3AA G18D060CA5AA G18D070CA5AA G18D077CA5AA G18D090CA5AA
Input, BTUH 60,000
Output, BTUH 48,000
AFUE, % 80
With A-Coil Cabinet YES
Ignition Type Auto-Elect
40-70
Air Temperature Rise, Range - F
170
Designed Max Outlet Air Temp-F
Natural Gas Orifice Size 27
44
Propane (LP) Gas Orifice Size
Blower-Heat or Heat/Cool 10 X 8, 1/4 HP, 2 SPD
Max. External SP (Duct), In.
W.C.
Fuel
High Altitude
Furnace Flue Pipe
Gas Connection
Electric Service
Fuse or Circuit Breaker
Thermostat Circuit
Filters
70,000 77,000 90,000 60,000
56,000 61,600 72,000 48,000
80 80 80 80
YES YES YES YES
Auto-Elect Auto-Elect Auto-elect Auto-Elect
40-70 40-70 45-75 40-70
170 170 175 170
22 19 17 27
42 41 37 44
0.3
Natural Gas (Factory Equipped) - LP Orifice Furnished
For elevations above 2,000 feet, reduce input 4% for each 1,000 ft.
Must Use RJS Roof Jack for Sloped Roof or RJF Roof
1/2" FPT
TECHNICAL GUIDE
CAUTION: READ ALL SAFETY GUIDES
"A" Cabinet
70,000 77,000 90,000
56,000 61,600 72,000
80 80 80
YES YES YES
Auto-Elect Auto-Elect Auto-elect
40-70 40-70 45-75
170 170 175
22 19 17
42 41 37
10 X 8, 1/3 HP, 3 SPD
elevation above sea level
Jack for Flat Roof
115 VAC, 60 Hz, 1 PH
15 Amp
24 VAC, 60 Hz, 40VA
2 - 16" X 20" X 1"
BEFORE INSTALLING THIS GUIDE
"C" Cabinet
60,000 70,000 77,000 90,000
48,000 56,000 61,600 72,000
80 80 80 80
YES YES YES YES
Auto-Elect Auto-Elect Auto-Elect Auto-elect
40-70 40-70 40-70 45-75
170 170 170 175
27 22 19 17
44 42 41 37
10 X 8, 3/4 HP, 4 SPD
1