Rheem RTGH Series User Manual

27
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater
Venting
Regulator vent outlet in the event no
regulator is present, H and I can be
disregarded.
Fixed
closed
15 ft
Fixed
closed
Inside
corner detail
Operable
Operable
V
VENT TERMINAL
X
AIR SUPPLY INLET
AREA WHERE TERMINAL IS NOT PERMITTED
Canadian Installations
1
US Installations
2
A= Clearance above grade, veranda, porch, deck
or balcony.
12 inches (30 cm) 12 inches (30 cm)
B= Clearance to window or door that may be
opened.
• 6 in (15 cm) for appliances ≤ 10,000 Btuh
(3 kW),
• 12 in (30 cm) for appliances > 10,000 Btuh
(3 kW) and ≤ 100,000 Btuh (30 kW),
• 36 in (91 cm) for appliances > 100,000 Btuh
(30 kW)
• 6 in (15 cm) for appliances ≤ 10,000 Btuh
(3 kW),
• 12 in (30 cm) for appliances > 10,000 Btuh
(3 kW) and ≤ 50,000 Btuh (15 kW),
• 12 in (30 cm) for appliances > 50,000 Btuh
(15 kW)
C= Clearance to permanently closed window. 0 in (0 cm) 0 in (0 cm)
D= Vertical Clearance to ventilated soffit located
above the terminal within a horizontal
distance of 2 feet (61 cm) from the center
line of the terminal.
12 in (30 cm) 12 in (30 cm)
E= Clearance to unventilated soffit. 12 in (30 cm) 12 in (30 cm)
F= Clearance to outside corner. 24 in (61 cm) 24 in (61 cm)
G= Clearance to inside corner. 18 in (46 cm) 18 in (46 cm)
H = Clearance to each side of center line
extended meter/regulator assembly. above
3 feet (91 cm) within a height 15 feet (4.6 m) 3 ft (91 cm) within a height of 15 ft (4.6 m)
I = Clearance to service regulator vent outlet. 3 feet (91 cm) 3 feet (91 cm)
J = Clearance to nonmechanical air supply inlet
to building or the combustion air inlet to any
other appliance..
• 6 in (15 cm) for appliances ≤ 10,000 Btuh
(3 kW),
• 12 in (30 cm) for appliances > 10,000 Btuh
(3 kW) and ≤ 100,000 Btuh (30 kW),
• 36 in (91 cm) for appliances > 100,000 Btuh
(30 kW)
• 6 in (15 cm) for appliances ≤ 10,000 Btuh
(3 kW),
• 12 in (30 cm) for appliances > 10,000 Btuh
(3 kW) and ≤ 50,000 Btuh (15 kW),
• 12 in (30 cm) for appliances > 50,000 Btuh
(15 kW)
K = Clearance to mechanical air supply inlet.
6 feet (1.83 m)
3 feet (91 cm) above if within 10 feet (3 m)
horizontally.
L = Clearance above paved side walk or paved
driveway located on public property.
7 feet (2.13 m)
7 feet (2.13 m) for mechanical draft systems
(Category I appliances); vents for Category II
and IV appliances cannot be located above public
walkways or other areas where condensate or
vapor can cause a nuisance or hazard.
M = Clearance under veranda, porch, deck or
balcony.
12 in (30 cm) ‡ 12 in (30 cm) ‡
1
In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code
2
In accordance with the current ANSI Z223.1/ NFPA 54 National Fuel Gas Code
‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the oor.
Horizontal Vent Termination Location for Direct-Vent Water Heater

Rheem RTGH Series Specifications

General

Type	Tankless
Fuel Type	Natural Gas or Propane
Ignition System	Electronic
Energy Factor	0.82 - 0.94
Vent Type	Direct Vent
Installation Location	Indoor or Outdoor
Dimensions	Varies by model
Weight	Varies by model
Warranty	12 years heat exchanger, 5 years parts