Submittal

Reznor X Series Duct Furnaces are designed to provide 80% thermal efciency for indoor application with
gravity venting. They are certied for use with natural or propane gas, as specied, in sizes from 75,000
through 400,000 BTUH input. These models are used as heating components in heating, heating/cooling, or
makeup air systems and require a separate blower system for air delivery. The furnace has a Reznor Thermo-
core
®
aluminized steel heat exchanger with venturi-design tubes. The die-formed burners are of aluminized
steel and include ared ports with a stainless steel insert.
The Model X furnace is approved for a temperature rise of 50°F to 90°F and includes “nger-bafes” for proper
air distribution at these lower air volumes. Removing the nger-bafes increases the air ow. These eld con-
verted units are approved for a temperature rise of 20°F to 75°F.
Standard features include a spark ignition pilot and a single-stage, 24-volt gas valve. Model X units are wired
for eld connection to a remote 24-volt thermostat for automatic operation. Each unit is provided with all re-
quired limit and safety controls, including a blocked vent shut-off system.
● Orices for natural gas
● Aluminized steel heat exchanger
● Aluminized steel burners with stainless steel insert
● 120-volt supply voltage
● 24 volt control voltage transformer
● High limit safety cutout
● Single-stage combination gas valve (see note 1)
● Side access for burners and controls (left side facing air stream)
● Horizontal or vertical ue discharge
● Spark-ignited pilot
● Fan control
● Terminal blocks for connecting eld wiring
● Blocked vent shut-off system
● Unit equipped for propane gas
● E-3 (409) stainless steel heat exchanger (see note 2)
● E-3 (409) stainless steel burners (see note 2)
● E-3 (409) stainless steel drip pan (see note 2)
● Gas Controls
♦ Spark-ignited intermittent safety pilot with electronic ame supervision
♦ Spark-ignited intermittent safety pilot with electronic ame supervision and timed lockout
♦ Two-stage controls
♦ Electronic modulation - 50%-100% ring rate
● Burner air shutters (required on units equipped with propane gas)
● 208/230/460-volt alternate supply voltage
● Right side controls (facing airstream)
DESCRIPTION
STANDARD FEATURES
OPTIONAL FEATURES -
FACTORY INSTALLED
NOTES:
1. Regulated combinationredundant gasvalve consistsof combinationpilot solenoid valve,electric gasvalve, pilotlter,pressure
regulator,pilotshut-off,andmanualshut-off,allinonebody.Gassupplypressuremustnotexceed0.5PSI(8oz.-14”w.c.).Minimum
inletpressurefornaturalgasis5”w.c.Minimuminletpressureforpropanegasis11”w.c.
2. Forairinlettemperaturesbelow40°Fortemperatureriselessthan40°F,anoptionalstainlesssteelheatexchangerisrecommended.
3. See temperature rise and pressure drop tables.
4. Blowermustbeplacedonenteringsideoffurnace.
5. Approvedforinstallationdownstreamofanairconditioningcoil(optionaldrainange,stainlesssteelheatexchanger,andstainless
steelburnersarerecommended).
6. Not approved for residential use.
MODEL X
INDOOR, GAS-FIRED, GRAVITY-VENTED DUCT FURNACE FOR COMMERCIAL/
INDUSTRIAL USE
CGA 2.6
ANSI Z83.8
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Form RZ-C-DH Page 8
Page Number _______ of ______