Ascent Combi and Ascent Plus Combi Gas – January 2024 9
Installations should utilize the Energy Kinetics boiler stand or a suitable solid, stable, level, and smooth foundation for the
boiler. If not using an Energy Kinetics supplied stand, provide a solid, level, and smooth foundation with clearance for door
opening and service. Place the unit as near to the chimney or vent as possible allowing clearance for front cleaning and
service as shown in Figure 1A and 1B. Installing the boiler with the burner parallel to a wall is sometimes advisable to allow
access to front and rear components in spaces with limited depth.
NOTICE: The Ascent Combi is manufactured with the BACK of the boiler higher than the front to assist in air removal. A
spirit level placed front to back on the lower side of the base near the floor will read level. The stand design compensates
and properly pitches the boiler ¼ to ½ a bubble off level, with the back of the boiler higher. Adjust the levelling feet or by
shimming the base at the floor as necessary.
Figure 1B - Boiler Clearance for Cleaning and Service
Burner
Dim “A”
Open Door
Leg Bottom to Floor
Clearance “B” (minimum)
W/O Silent
Burner Cover
With Silent
Burner Cover
Carlin
EZ-Gas
11 5/8” 12 ¾” 12”
COMBUSTION AIR
The Ascent Combi Boiler must be installed in an area where adequate fresh air is available to support combustion. An
optional sealed air box (Silent Burner Cover), included in the Ascent Plus Combi model allows combustion air to be piped
from outside the building. Piping of outside air directly to the boiler is highly recommended because it isolates the boiler
from the home environment, it greatly reduces operating noise from the boiler, and it can lower idle loss in some cases.
Boiler with outside air piping: Combustion air must be supplied for the Ascent Plus Combi, although it is optional for
the Ascent Combi. In modern houses with tight construction, the connection of the Silent Burner Cover to an outside air
source to provide combustion air is highly recommended on the Ascent Combi. The outside air source should be located
high enough above grade to be at least 12” above expected snow accumulation.
WARNING: Combustion air must be supplied for the Ascent Plus Combi, although it is optional for the Ascent Combi. It
may be supplied with up to 50 feet in equivalent length through polypropylene or PVC pipe. For the EK1T
Ascent Combi use 2" pipe, and for the EK1T+ Ascent Plus Combi use 3” pipe. Each 90 degree elbow is the
equivalent of 5 feet of straight pipe. For example, if three 90 degree elbows are used, then the length of pipe
run may be up to 35 feet. For longer runs up to 65 equivalent feet increase pipe size by 1","(to 3” for the
Ascent Combi and to 4” for the Ascent Plus Combi). A Tek-screwed or un-cemented joint allows the air inlet
pipe to be disconnected so the swing down door may open.
Level bottom of stand,
or slightly higher in back
20"
49-1/ 2"
30-1/2"
"A"
48"
52
1
4
"
"B"
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