Lochinvar F0600187510 - Manual (Page 22)

Commercial Pool Heaters
INSTALLATION
Continued
Masonry Chimney Installation
Do not use a standard masonry chimney to directly vent the
combustion products from this pool heater.
To use a masonry chimney, the chimney must use a sealed,
corrosion-resistant liner system. Sealed, corrosion-resistant liner
systems (singlewall, doublewall, flexible, or rigid) must be rated for
use with a high efficiency, positive pressure vent system.
Corrosion-resistant chimney liner systems are typically made from
a high grade stainless steel such as AL29-4C. The liner must be
properly sized and fully sealed throughout the entire length. Both
the top and bottom of the masonry chimney must be capped and
sealed to provide a dead air space around the liner.
ƽ
WARNING: Do not vent this pool heater into a
masonry chimney without a sealed stainless steel
liner system. Any breaks, leaks, or damage to the
masonry flue/tile will allow the positive-pressure flue
products to leak from the chimney and into
occupied living spaces. This could cause serious
injury or death due to carbon monoxide poisoning
and other harmful flue products.
IMPORTANT: Check with local code officials to
determine code requirements or the advisability
of using a masonry chimney with a sealed
corrosion-resistant liner system.
Vertical DV Venting Termination
You must use the vent termination recommended by the vent
manufacturer for vertical direct vent terminations. Follow all
vertical venting termination information for clearances and location
under Vertical Vent Termination Clearances and Location, page 10.
Horizontal DV Venting Termination
Horizontal venting (air inlet and flue outlet on the same wall) uses
the pool heater’s internal combustion air blowers to force the flue
products out of the horizontally-terminated flue.
You must purchase a horizontal direct vent kit from the pool heater
manufacturer to ensure proper operation. See TABLE–G, this page,
to determine which horizontal direct vent kit you need.
When installing the vent cap, the wall opening must provide an air
space clearance of 2 inches (5.1cm) around the flue pipe. The
diameter of the opening for installation of the sidewall cap will be
4 inches (10.2cm) larger (minimum) than the nominal diameter of
the installed vent pipe to the horizontal vent cap.
Install the horizontal vent cap from the outside. Mount the vent
cap to the wall using four screws or wall anchors. Seal under the
screw heads with caulking. Install the sealed, AL29-4C vent pipe
from the pool heater to the vent cap.
Horizontal Vent Termination Clearances and Location
Follow all sidewall venting termination information for clearances
and location under Sidewall Vent Termination Clearances and
Location, page 11.
TABLE-G
DirectAire™ Kits
Input
Btu/hr
Horizontal
Kit*
Vertical
Kit*
500,000 DVK3004 VDK3026
650,000 DVK3005 VDK3027
750,000 DVK3005 VDK3027
990,000 DVK3000 VDK3023
1,260,000 DVK3001 VDK3024
1,440,000 DVK3001 VDK3024
1,800,000 DVK3002 VDK3024
2,070,000 DVK3002 VDK3024
* The DVK kit includes a DV box adapter, air inlet cap, and a sidewall
vent termination. The VDK kit includes a DV box adapter and an air
inlet cap. See note on page 12 concerning DV box adapter.
Flue Pipe Materials
The following manufacturers supply flue materials suitable for these
models. All materials are made with AL29-4C stainless steel. Call
the numbers below for the nearest distributor.
Heat-Fab, Inc. Saf-T CI Vent. 1-800-772-0739.
Protech Systems, Inc. Fas-N-Seal Vent. 1-800-766-3473.
Metal-Fab, Inc. Corr/Guard Vent. 1-800-835-2830.
Combustion Air Inlet Piping
The Direct Vent system requires the installation of a pipe to supply
combustion air from the outdoors directly to the pool heater. The
air inlet piping can either be brought in horizontally from a sidewall
or vertically from the rooftop. Make sure the combustion air inlet is
in the same pressure zone as the vent terminal.
22