16
Termination
The direct vent cap (sales order option D-11) MUST be
mounted on the exterior of the building. The direct vent cap
cannot be installed in a well or below grade. The direct vent
cap must be installed at least 1' (30.5 cm) above ground
level and above normal snow levels. A Raypak approved
vent cap must be used. The vent terminal must be located
NO CLOSER than 12" (30.5 cm) off the wall.
A
WARNING:
No substitutions of flue pipe or vent
cap material are allowed. Such substitutions would
jeopardize the safety and health of inhabitants.
Direct Vent – Horizontal
Through-the-Wall
Installation
These installations utilize the heater-mounted blower to
draw combustion air from outdoors and vent combustion
products to the outdoors. Connect the air duct to the heater
using kit 015327F, shipped loose in the box with the heater.
The total length of a 4" through-the-wall flue and air intake
cannot exceed the values listed in
Table I
. Each elbow
used is equal to 10' (3 m) of straight pipe. For example
using 4" pipe, this will allow installation in one of the five
following arrangements:
•
65' (19.8 m) of straight flue pipe
•
55' (16.8 m) of straight flue pipe and one elbow
•
45' (13.7 m) of straight flue pipe and two elbows
•
35' (10.7 m) of straight pipe and three elbows
•
25' (7.6 m) of straight pipe and four elbows
If either the flue run or the air intake run exceeds 65 ft.
(19.8 m) effective length, they must be increased to 5" or
6" using field-supplied adapters. Max effective length then
is 150 ft (45.7 m)
The flue direct vent cap and air intake elbow are not
considered in the overall length of the venting system.
Care must be taken during assembly that all joints are
sealed properly and are airtight.
The vent must be installed to prevent the potential
accumulation of condensate in the vent pipes. It is
recommended that the vent be insulated. Insulation is
required for installations in cold environments (i.e. below
40°F or 4°C).
For installations in extremely cold climate, it is required
that:
• The vent must be installed with a slight upward slope
of not more than 1/4" per foot (6.35 mm per 305 mm)
of horizontal run to the vent terminal. An approved
condensate trap must be installed per applicable
codes.
• The intake vent must be insulated through the length
of the horizontal run.
ALTERNATIVE COMBUSTION
AIR INTAKE LOCATION
HEATER UNIT
F10326
12" (30.5 cm)
MIN
36" (91 cm)
MIN
D-15 FLUE
TERMINATION
AIR
INTAKE
CONDENSATION
TRAP
Figure 9. Horizontal Through-the-Wall Direct Venting
Termination
The flue termination (sales order option D-15) MUST
be mounted on the exterior of the building. It cannot be
installed in a well or below grade. It must be installed at
least 1' (30.5 cm) above ground level and above normal
snow levels.
The D-15 flue termination MUST NOT be installed with any
combustion air inlet directly above it within 3 ft. (0.91 cm).
This vertical spacing would allow the flue products from
the flue termination to be pulled into the combustion air
intake installed above.
This type of installation can cause non-warrantable
problems with components and poor operation of the
heater due to the recirculation of flue products. Multiple
flue terminations installed in the same horizontal plane
must have a 4' (1.2 m) clearance from the side of one
termination to the side of the adjacent vent cap(s). It is
preferable to install multiple vent terminations in a vertical
line, see
Figure 10
.
APPROVED
UNCONTROLLED DOCUMENT IF PRINTED
Summary of Contents for Raypak X94 SR-410
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