Installing the water heater.
The water heater must be installed with a RTG20002B vent adapter or a UL approved Category III Stainless Steel equivalent.
Venting
DANGER: Failure to install the vent adapter and properly vent the water heater to the outdoors as outlined in the Venting section of this manual will result in unsafe operation of the water heater causing death, serious injury, explosion, or fire. To avoid the risk of fire, explosion, or asphyxiation from carbon monoxide, NEVER operate the water heater unless it is properly vented and has adequate air supply for proper operation as outlined in the Venting section of this manual.
The installation of venting must comply with national codes, local codes, and the vent manufacturer's instructions
The water heater must be vented to the outdoors as described in these instructions. DO NOT connect this water heater to an existing Vent or Chimney, it must be vented separately from all other appliances.
All vent components (adapters, pipe, elbows, terminals, etc.) should be UL1738 Certified Stainless Steel Venting Material (e.g.
The specified vent termination must be used. The termination should be a 90° elbow type with screen. (Refer to page 15)
Follow vent manufacturer's installation instructions.
The unit can be vented either horizontally or vertically.
Vent pipe runs must be adequately supported along both horizontal and vertical runs.
The maximum recommended unsupported span should be no more than five (5) feet. Support isolation hanging bands should be used. DO NOT use wire. (See diagram below).
WARNING: Use UL |
|
|
|
approved Category III | Use a vent pipe with an |
|
|
Stainless Steel vent material structure. |
|
| |
only. No other vent |
|
|
|
material is permitted. | The use of a High Temperature Silicone |
|
|
|
|
| |
| (500oF) may be required to seal vent |
|
|
WARNING: Refer to | connections. To prevent accidental gas |
|
|
exhaust leakage, apply a 1/4 wide bead |
|
| |
page 7 for clearances to |
|
| |
combustible material. | approximately 1/4 from the end and |
|
|
| another bead against the joint side of the |
|
|
| stop bead. |
|
|
|
|
|
|
| Venting Lengths | The vent can be installed with a slight | |
| MAXIMUM VENT LENGTH - The | downward slope of 1/4 per foot of | |
| horizontal run toward the vent terminal | ||
| system will not operate if there is | ||
| (see diagram below). This ensures that | ||
| excessive restriction (pressure drop) in the | ||
| any condensate formed during operation | ||
| venting system. A maximum of 47 feet 6 | of the unit is evacuated from the | |
| inches of vent pipe may be used provided | ||
| appliance. | ||
| there is only one 90o elbow in the system. | ||
| If additional elbows are required: two | A 1/4 per foot upward slope is acceptable | |
| elbows can be used with 42 feet 6 inches, | ||
| when it is not possible to vent with a | ||
| and three elbows can be used with 37 feet | ||
| downward slope, however, a UL approved | ||
| 6 inches of vent pipe. | ||
| Category III Stainless Steel condensate | ||
|
| ||
| A 90o elbow is equivalent to 5 feet to | trap MUST be installed at the beginning | |
|
| of the horizontal run (See page 15 | |
straight pipe. A 45o elbow is equivalent to | Typical Horizontal Termination | |
2 feet 6 inches of straight pipe. | ||
w/ 1/4 per foot UPWARD Slope or | ||
| ||
The termination elbow does not count as | page 16, Standard Vertical Vent | |
Termination for examples). | ||
an elbow when determining total vent | ||
| ||
lengths. | MINIMUM VENT LENGTH - The | |
| ||
| venting may be as short as 12 , provided | |
| one vent termination is installed to the | |
| outdoors through a sidewall, one 90o | |
| elbow is included in the installation, and | |
| the wall thimble is installed. | |
| Notice: Make sure that the seam of the | |
| vent pipe in horizontal runs is toward the | |
| top of the installation (see illustration to | |
| the far left). |
12
