Fluid Expansion Bottle
Fluid Expansion Bottle
©Aqua-Hot®
400D Installation Manual
Rev 220504
©Aqua-Hot®
400D Installation Manual
Rev 220504
p. 11
p. 10
Exhaust System Requirements
• The exhaust must be able to freely exit away from the
vehicle without any obstructions.
• Angle the exhaust pipe towards the rear of the vehicle,
so that exhaust fumes will naturally move away while the
vehicle is in motion. See Figure 16.
• Use standard 2” automotive-type exhaust piping and avoid
bends, if possible. A minimum 1.75” ID automotive-type
exhaust pipe may be used. See Figure 15 & Figure 18.
• A maximum of three 90° exhaust bends are allowed.
Reference Figure 14.
•
Do not use galvanized pipe fittings (only black-iron pipe and
fittings should be used). Reference Figure 18.
• The total length of exhaust pipe should not exceed 27.5
feet.
• The Aqua-Hot is supplied with a 3 inch and 4 inch black pipe
nipple (1.5 inch diameter) along with a 1.5 inch exhaust
elbow. Reference Figure 16. These three exhaust system
components MUST BE utilized with all product installations.
Be sure to reference Figure 17 and 18 to determine which
exhaust nipple should be connected directly to the Aqua-
Hot’s exhaust port (the 3 inch of the 4 inch black pipe
nipple).
Exhaust System
Exhaust System
The Aqua-Hot’s exhaust is HOT and must be kept away
from any heat sensitive material(s). Do NOT direct
exhaust downward as a fire may result when parked in
dry, grassy areas.
All Aqua-Hot exhaust system installations MUST utilize the
two black pipe nipples and black pipe elbow, which are
provided with the heating system in the configuration to be
suited for the particular RV application. Failure to conform
could create a hazardous situation and WILL void the Aqua-
Hot’s ETL Product Listing.
NOTE:
Refer to “Internal Combustion Engine Exhausts and
Vehicle Wall Openings” in RVIA’s ANSI/NFPA 1192 Handbook
for the Recreational Vehicle Standards, as well as the
National Fire Protection Associations’ (NFPA) 1192 Standard
on Recreational Vehicles for additional information.
Figure 16
Installation Procedure:
1. Run the exhaust pipe to the driver’s side or to the back
of the vehicle and ensure that the exhaust fumes cannot
enter into the passenger compartment.
2. Be sure to secure the end of the exhaust pipe to the vehicle
with the proper exhaust hanger/support hardware.
NOTE:
Should this particular application require more than
27.5 feet of exhaust pipe, please contact Aqua-Hot at +1
(800) 685-4298 for assistance.
NOTE:
The exhaust elbow can be rotated 270°,
as shown in the illustration; however, the exhaust
must not terminate beneath the vehicle or beneath
an open-able window or vent.
NOTE:
A maximum of three 90° bends are allowed
in the exhaust pipe. Also, the exhaust pipe cannot
be longer than 27.5 feet.
Figure 14
1.5 inch ID Black Pipe Exhaust Fitting
The two black pipe exhaust fittings MUST be utilized
with all installations! Failure to conform could create
a hazardous situation and will void the Aqua-Hot ETL
Product Listing.
1.5 inch Exhaust Port
View from Underneath Aqua-Hot
Exhaust Elbow and
Nipples Assembly
2.0 inch ID Automotive Type Exhaust Pipe
Figure 15
