8
EX38DT Installation and Operation Manual
The efficiency rating of this furnace is a product thermal efficiency rating determined under continuous
operating conditions and was determined independently of any installed system.
Rinnai products are continually being updated and improved; therefore, specifications are subject to
change without prior notice.
EX38DT
Application
Approved for manufactured home (USA only) or mobile home or residential
installation convertible for use with natural gas and liquefied petroleum gases
(propane) when provision is made for the simple conversion from one gas to the
other. Approved for commercial setting. Approved for installation at altitudes up to
10,200 feet (3,109 m).
Natural Gas
Liquid Propane Gas
Min. Supply Gas
Pressure
3.5 in. (89 mm) wc
8.0 in. (203 mm) wc
Max. Supply Gas
Pressure
10.5 in. (267 mm) wc
13.0 in. (330 mm) wc
Btu/h Input
Low 13,200 High 38,400
Low 13,200 High 36,500
General
Description
Forced Combustion, Forced Convection, Flued Gas Furnace
Operation
Push Button Electronic
Gas Connection
1/2 in. (13 mm) Male NPT
Gas Control
Electronic
Burners
Stainless Steel Bunsen Burner
Temperature
Control
Electronic Thermostat, Low, 60-80ºF (16-26°C) in 2ºF (1°C) Increments, High
Ignition System
Electronic Spark Ignition
Flue System
The flue must be terminated to atmosphere with only flue components listed with the
furnace’s certification. Warranty will be voided if non-listed components are installed.
Humidifier Tray
Capacity - 6.3 pints (3,000 cc)
Electrical
Connections
AC 120 Volts, 60 Hz, 58 watts
Standby Power
0.7 watts
Weight
86 lbs (39 kg)
Sound Level
39-46 dB
Safety Features
Overheat: The furnace will automatically shut down when exceeding a
predetermined temperature.
Flame Failure: The furnace will automatically shut down if the burner flame is
extinguished.
Power Failure: The furnace will shut off the gas if it loses electrical power.
Power Surge Fuse: A glass fuse on the PC board protects against overcurrent. If
the fuse blows then all indicator lamps will be off.
Spark Detector: The furnace automatically shuts down if there is an abnormal
spark at ignition.
Fusible Link: In case the overheat feature does not prevent an overheat, then
the fusible link could break, shutting off the furnace.
3.2 Specifications
Table 2: Specifications
Summary of Contents for EX38DT
Page 41: ...EX38DT Installation and Operation Manual 41 8 Parts Cut Away Diagram Figure 58 ...
Page 42: ...42 EX38DT Installation and Operation Manual Exploded View of Service Parts Figure 59 ...
Page 43: ...EX38DT Installation and Operation Manual 43 Exploded View of Service Parts Figure 60 ...
Page 44: ...44 EX38DT Installation and Operation Manual Exploded View of Service Parts Figure 61 ...
Page 45: ...EX38DT Installation and Operation Manual 45 Exploded View of Service Parts Figure 62 ...
Page 46: ...46 EX38DT Installation and Operation Manual Exploded View of Service Parts Figure 63 ...