State Water Heaters SUF 60120 THRU, Инструкция по эксплуатации

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31
CONCENTRIC TERMINATION INSTALLATION
Assemble and install the concentric termination. Refer to
Figure
28
,
Figure 29
and
Figure 30
for these instructions:
FOUR-PIECE KIT - FIELD ASSEMBLY REQUIRED
VENT PIPE
INTAKE AIR CONNECTION
VENT CONNECTION
INTAKE AIR PIPE
Y FITTING ASSEMBLY
VENT CAP
VENT PIPE ASSEMBLY
MINIMUM ALLOWABLE LENGTH 25 INCHES (64 cm)
INTAKE AIR PIPE MAY BE SHORTENED
MINIMUM ALLOWABLE LENGTH 12 INCHES (30 cm)
VENT CAP
INTAKE AIR PIPE
Y FITTING
VENT PIPE MAY BE SHORTENED
Figure 28. Concentric Termination Kit
1. Cement the Y fitting to the larger diameter intake air pipe.
2. Slide the intake air pipe and Y fitting assembly from inside the
building through the hole cut for the termination in the roof
or sidewall. Ensure no foreign materials such as insulation
accumulate inside the assembly.
3. Secure the intake air Y fitting assembly using field supplied
metal strapping or equivalent support materials.
4. On installations installed through the roof, slide a field-supplied
plumbing boot or roof flashing over the intake air Y-fitting
assembly and secure it to the roof.
5. Seal around the plumbing boot or roof flashing.
6. Cement the vent cap onto the vent pipe. Alternately a field-
supplied stainless steel screw may be used to secure the two
components together when field disassembly is desired for
cleaning. A pilot hole must be drilled for the screw to prevent
damage/cracking of the vent cap and/or vent pipe.
7. Install the vent cap/vent pipe assembly into the intake air Y fitting
assembly. Ensure the small diameter vent pipe is cemented and
bottomed in the Y fitting.
8. Use the appropriate method for connecting intake air and vent
piping to the termination as follows:
• For two-inch installations, connect the pipe directly to
the two-inch termination. For three-inch installations
connect the pipe directly to the three-inch termination.
Do not mix different pipe and termination sizes.
• For four-inch pipe installations - connect the piping to
the concentric termination using field supplied 4" x 3"
reducer couplings and short sections of three-inch pipe
(18 inches or less).
Do not exceed the maximum equivalent vent length listed
in
Table 7
(page 23) .
Cement all fittings and pipe in place.
9. Return to
Direct Vent Installation
(page 24) to complete the
installation of the intake air and vent piping between the
concentric termination and the water heater.
NOTE: SECURING STRAP
MUST BE FIELD INSTALLED
TO PREVENT MOVEMENT
OF TERMINATION KIT
MAINTAIN 12” (30 cm)
18” (45 cm) FOR CANADA
MINIMUM CLEARANCE
ABOVE HIGHEST ANTICIPATED
SNOW LEVEL. MAXIMUM OF
24” (60 cm) ABOVE ROOF.
ROOF FLASHING
(field supplied)
STRAP
(field supplied)
VENT
PIPE
INTAKE
AIR PIPE
COMBUSTION
AIR
VENT
Figure 29. Concentric Termination - Vertical Installation
INTAKE AIR PIPE
STRAP
(field supplied)
VENT PIPE
COMBUSTION
AIR
VENT
1 INCH
MAXIMUM
NOTE: SECURING STRAP MUST BE
FIELD INSTALLED TO PREVENT
MOVEMENT OF TERMINATION KIT
IN SIDEWALL.
Figure 30. Concentric Termination - Side-Wall Installation