![](/images/new-backgrounds/1063562/6356215x1.webp)
Installation
!WARNING
NEVER use open flame to test for gas leaks, as bodily injury or property damage could result.
PRESSURE TESTING THE GAS SUPPLY SYSTEM — The water heater and its manual gas
The water heater MUST be isolated from the gas piping system by closing the manual gas
5.VENTING —
!WARNING
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.
!WARNING
Failure to properly vent the water heater to the outdoors as outlined above and in the following section can result in unsafe operation of the water heater causing bodily injury, explosion, fire or death.
!WARNING
To avoid the risk of fire, explosion or asphyxiation from carbon monoxide, NEVER operate this water heater unless it is properly vented and has an adequate air supply for proper operation. The vent pipe must overlap a minimum of ½" on each connection. It is important that the vent pipe engages fully into any pipe fitting and be kept in that position until the adhesive has fully cured. DO NOT drill or punch holes in the plastic pipe or fittings.
NOTICE: This unit can be vented using only the following recommended pipe material. Use only 3- or
PVC (Schedule 40, ASTM
CPVC (Schedule 40, ASTM
ABS (Schedule 40, ASTM
The fittings, other than the VENT TERMINAL, should be equiva- lent to the following:
PVC (Schedule 40 DWV, ASTM
CPVC (Schedule 40 DWV, ASTM
ABS (Schedule 40 DWV, ASTM
The unit may be vented horizontally through a wall or vertically through the roof. Pipe runs must be adequately supported along both vertical and horizontal runs. Maximum unsupported span is recommended to be no more than 4 feet. It is imperative that the first hanger be located on the horizontal run immediately adjacent to the first
If the water heater is being installed as a replacement for an existing power vented water heater, a thorough inspection of the existing venting system must be performed prior to any installation work. Verify that the correct materials, as detailed above have been used, and that the mini- mum or maximum vent length and terminal locations as detailed in this manual have been met. Carefully inspect the entire venting system for any signs of cracks or fractures, particularly at the joints between elbows or other fittings and the straight runs of vent pipe. Check the system for signs of sagging or other stresses in the joints as a result of misalignment of any components in the system. If any of these conditions are found, they must be corrected in accordance with the venting instructions in this manual before completing the installation and putting the water heater into service.
VENT PIPE CONNECTION —
Outlet
Vent Connection
Inlet
Vent Connection
Figure 5. — Vent Pipe Connection Locations
The blower assembly is preinstalled at the factory, so all that is required for connecting the vent system is attaching the vent pipe to the blower and the PVC Tee. Before starting the vent installation, careful planning should be given to the routing and termination of the vent pipe.The length of the vent pipe (inlet and outlet) should be kept to a minimum. Also, see page 10 & 12 for vent terminal placement.The
To use 3 inch PVC, you can connect directly to the blower outlet (rubber coupling provided for outlet connection) and PVC Tee. Make sure that clamps on rubber coupling are tight, after the pipe is installed. The inlet vent pipe should be cemented into the PVC Tee.
If 4 inch PVC pipe is going to be used, then it will be necessary to have a short piece ( at least 3 inches long ) of 3 inch PVC pipe to join into the coupling and tee. Then a 4 X 3 reducer would need to be joined to the short piece of pipe, so that the 4 inch pipe could be used.The 4 inch pipe will then need to be stepped back down, using a 4 X 3 reducer, to 3 inch PVC. To install the vent terminals, a short length of 3 inch (maximum of 16 inches long) pipe will need to be used. (Refer to Figure 9b on page 10.)
The