Rinnai EX22DT User manual

Models EX17DT (RHFE-436FTA)
EX22DT (RHFE-570FTA)
General
Description
Forced Combustion, Forced Convection,
Flued Gas Furnace
Application • Approved for manufactured home
(USA only), mobile home, or
residential installation convertible for
use with natural gas and liquefied
petroleum gases (propane) when
provision is made for the conversion
from one gas to the other.
• Approved for commercial setting.
• Approved for installation at altitudes
up to 10,200 ft. (3,109 m).
Supplied with
Purchase • Direct Vent Wall Furnace
• Flue Manifold "A" Vent Kit2 (FOT-151)
• Back Spacer Set
• Manual Gas Shut-off Valve
• Full Size Wall Template Located on
Furnace Carton Box
• Installation and Wall Mounting
Hardware
• Installation and Operation Manual
Optional Items • Extension Kit
Extends the exhaust line and air
intake hose between the flue manifold
and furnace.
• Remote Thermostat Installation Kit
− Part # 204000045 for US
installations
− Part # 204000048 for Canadian
installations
• Gas Conversion Kit:
EX17DT (RHFE-436FTA):
− Part # 203000007 for Converting to
Natural Gas
− Part # 203000008 for Converting to
Propane
EX22DT (RHFE-570FTA) and
EX22DT-W (RHFE-570FTA-W):
− Part # 203000009 for Converting to
Natural Gas
− Part # 203000010 for Converting to
Propane
Location Clearance
Top and Bottom/
Ground
0 in. (0 mm)
Front (Panel) 40 in. (1 m)1
Back (Including
Back Spacer)
0 in. (0 mm)
Sides (Left and
Right)
2 in. (50 mm)
1 Does not include flooring material or carpeting
less than 1.2 in. (30 mm) in height.
Clearances to access the
furnace during servicing are
10 in. (254 mm) from the
sides, 40 in. (1 m) from the
front, and the area shown
above the furnace in the
figure to the left.
Rinnai recommends 10 in.
(254 mm) clearance from
the top and on both sides
for servicing.
Service Clearances
Kit Name Kit No. Fits Walls
S Vent Kit FOT-150 3 - 4 1/2 in. (75 - 115 mm)
A Vent Kit FOT-151 4 1/2 - 9 1/2 in. (115 - 240 mm)
B Vent Kit FOT-152 9 1/2 - 15 3/4 in. (240 - 400 mm)
C Vent Kit FOT-153 15 3/4 - 23 5/8 in. (400 - 600 mm)
D Vent Kit FOT-154 23 5/8 - 31 1/2 in. (600 - 800 mm)
2 Additional flue manifolds are available for different wall
thicknesses (purchased separately). Vent Kit “A” is included
with the furnace.
Top
Bottom
Side
Front
Back
clearance for
maintenance
inches
(mm)
9
(229) 6 (153)
3 (76)

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.
200000093
1/2022
EX17DT EX22DT
Natural Gas Liquid Propane Gas Natural Gas Liquid Propane Gas
Min. Supply Gas Pressure 3.5 in. (89 mm) wc 8.0 in. (203 mm) wc 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 10.5 in. (267 mm) wc 13.0 in. (330 mm) wc
Btu/h Input Low 8,200 High 16,700 Low 8,200 High 21,500 Low 8,200 High 20,700
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 - 2.1 pints (1,000 cc)
Electrical Connections AC 120 Volts, 60 Hz, 24 watts AC 120 Volts, 60 Hz, 30 watts
Standby Power 0.7 watts
Weight 51 lbs (23 kg)
Sound Level 33-38 dB 33-42 dB
Side View
Front View (Including Sample Wall Template
Located on Furnace Carton Box)
Wall Bracket
Center of
Furnace
Wall
Opening
Position
Wall Opening Position
The hole center should be
within the shaded area.
Flue
Elbow