Horizontal Through Wall Venting (Category Iv) - Rheem Raypak X94 Professional SR-410 Manuel D'installation Et D'utilisation

Horizontal Through-the-Wall
Venting (Category IV)
Installation
CAUTION: This venting
installation of a condensate drain in the vent piping per
the vent manufacturer's instructions. Failure to install
a condensate drain in the venting system will cause
damage which will not be covered under warranty.
These installations utilize the heater-mounted blower to
vent the combustion products to the outdoors. Combustion
air is taken from inside the room and the vent is installed
horizontally through the wall to the outdoors. Adequate
combustion and ventilation air must be supplied to the
equipment room in accordance with the NFGC (U.S.) or
B149 (Canada).
The total length of a 4" horizontal through-the-wall flue
system must not exceed 65 equivalent ft (19.8 m) in length.
If horizontal run exceeds 65 equivalent ft (19.8 m), either
the flue must be increased to 5" or 6" using field-supplied
adapters, or an appropriately-sized
extractor must be used. Each elbow used is equal to 10'
(3.m) of straight pipe. If using 5" or 6" flue, max. effective
length is 150 ft (45.7 m). 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
The maximum and minimum venting length for this Category IV appliance shall be determined per the NFGC (U.S.) or
B149 (Canada).
Certified Exhaust Vent
Material
Stainless Steel,
AL29-4C,
ANSI/ASTM D1785
Sch 40 PVC, ANSI/ASTM F441
Sch 40 CPVC, DuraVent
Polypropylene**
Subtract 10' (3.05 m) per elbow. Max. 4 elbows.
* This unit is CSA-approved for up to 150 ft (45.7 m) effective length of 5" or 6", using field-supplied adapters.
**Only Duravent polypropylene is approved for the X94 Professional heater.
Size Approved Air Intakes
PVC 90° Elbow, Sch 40
4" Galvanized 90° Elbow,
SS 90° Elbow, ABS 90° Elbow
* Must be ULC-S636 materials in Canada.
system requires the
variable-speed
Vent Length
Vent and
Intake Air Size
Min.
5'
4"
(1.5 m)
Table I. Category IV Vent Requirements
Table J. Horizontal Vent and Air Intake Terminals
The vent cap is not considered in the overall length of the
venting system.
The vent must be installed to prevent flue gas leakage. Care
must be taken during assembly to ensure 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). It is required that:
1. The vent must be installed with a condensate drain
located in proximity to the heater as directed by the
vent manufacturer.
2. The vent must be installed with a slight upward slope
of not less than 1/4" per foot (6.35 mm per 305 mm)
of horizontal run to the vent terminal.
HEATER UNIT
Figure 8. Horizontal Through-the-Wall Venting
Combustion Air
Max.
65' *
(19.8 m)
Approved Plastic
Terminals
4" PVC/CPVC Tee Sch
40*
CONDENSATION
TRAP
F10324
Intake Air Max.
Intake Pipe
Length
Material
Galvanized
Steel, PVC,
(19.8 m)
ABS, CPVC
Approved SS
Terminals
FasNSeal FSTT4
12" (30.5 cm) MIN
FLUE EXHAUST
VENT CAP
12" (30.5 cm)
MIN
65' *
15