VENTING
WARNING: Do not reduce the vent pipe size and do not common vent with any other vented appliance or stove.
This appliance must be vented horizontally to the outside with a sealed 4” single wall vent pipe. The appliance’s flue gasses are under positive pressure and must travel through a single wall 4” pipe that is sealed gas tight. The 4” single wall vent pipe can be either stainless steel
The 125FX shall not be vented in combination with any other appliance. This appliance may only be vented horizontally with a dedicated sealed single wall vent. The 125FX shall not be vented into masonry chimneys or existing vertical vents of any material.
CAUTION: 125FX vent system must be installed by a qualified agency in accordance with these instructions. If improperly installed a hazardous condition such as explosion or Carbon Monoxide poisoning could result. Controlled Energy Corporation will not be responsible for improperly installed appliances.
Establish vent clearances that comply with vent manufacturer’s specifications. In all cases follow local codes. See table below.
The vent diameter must be 4”. The appliance should be located as close to the point of termination as possible (see Fig. 5 for locating the terminator). The vent system should be as straight and short as possible. The vent pipe must be 4” single wall stainless steel
from the total vent length for each additional
Note: Single wall pipe should not be used in concealed, unoccupied or unheated locations. Listed thimbles or collars are necessary to pass through wall partitions. If the vent system passes through combustible areas where the vent clearance requirements cannot be maintained, it is permissible to chase straight sections of sealed 4 inch single wall vent through 5 inch (or greater)
Freeze Warning:
As mentioned on Page 5, negative air pressure in cold climates will cause a reverse airflow in the vent system that can freeze and damage the Aquastar heat exchanger when not in use. To prevent this the FXHOOD horizontal vent terminator, which was supplied separately with the water heater, needs to be installed on the end of the horizontal vent run (see page 8). The FXHOOD is a CSA approved vent terminator for the Aquastar 125FX and has a built in back draft flapper.
Flue Gas Sensor:
The 125FX is equipped with a Flue Gas Sensor; it’s mounted on the left side of the draft diverter (Flue Gas Sensor - #33 on page 19). Before leaving the installation site verify proper Flue Gas Sensor operation by temporarily blocking termination outlet. Once blocked then operate the heater, the unit should shut down within
The flue gas exhaust temperature on the 125 FX is 356°F (180°C)
Venting Material | Exhaust vent | Exhaust vent maximum |
Options | diameter | distance |
|
|
|
Single wall stainless |
| 15 feet (4.6 m) with two |
steel | 4 inch | elbows. Less 5 feet for |
sealed vent pipe |
| each additional elbow. |
Single wall galvanized |
|
|
vent pipe (min. 26 |
| 15 feet (4.6 m) with two |
gauge and sealed | 4 inch | elbows. Less 5 feet for |
with high temperature |
| each additional elbow. |
silicone) |
|
|
|
|
|
Clearances
from venting
material
Vent pipe within an | Vent pipe within an |
unenclosed space | enclosed space |
|
|
*See manufacturer's | *See manufacturer's |
specifications | specifications |
|
|
6 inches | NOT PERMISSIBLE |
|
|
*Stainless steel
6 720 606 601 | 7 |