Eco-King HWB-299, Installation And Service Manual

Page: 38 / 124

E93.1801EN171 HWB installation manual 38
NOTICE
10.1.2 V
ENT AND AIR INLET RESISTANCE TABLE
Minimum and maximum allowable combined vent and air inlet length :
- Minimum venting length: two feet (2 ft) for all water heaters
- Maximum venting length: see table below.
Maximum Exhaust Length / Maximum Combustion Air Intake Length
HWB-299 HWB-399 HWB-499
4"
228' / 228' 121' / 121' 92' / 92'
5"
359' / 359'
6"
605' / 605'
For long lengths, check venting pipe and fittings for maximum allowable pressure.
This table may only be used for a single vent/air system for one water heater.
Do
NOT use this table for common vent systems with cascaded water heaters.
Pipe, elbows, tees - equivalent feet: for DuraVent PolyPro
Item\ size 4" 5" 6"
1 ft Vent Pipe 1 ft 1 ft 1 ft
1 ft Flex Pipe (same diameter as rigid) 2 ft 2 ft NA
1 ft Flex Pipe (upsized one diameter) 0.6 ft NA NA
45 Elbow 5 ft 6 ft 6 ft
90 Elbow 12 ft 14 ft 14 ft
Tee 19 ft 21 ft 22 ft
Terminals equivalent feet: for DuraVent PolyPro
WATER
HEATER
TERMINAL size part #
HWB-299
HWB-399 concentric roof: 4" vent 4PPS-VKL
4PPS-VK-TCL 37 ft
concentric wall: 4" vent 4PPS-HKL 13 ft
HWB-499 2 pipe wall: 6" vent 6PPS-HSTL 28 ft
Vent and air intake pipe material
Items Materials
1)
Venting System Standards Warning
United States Canada
3)
Flue piping and
Fittings CPVC Schedule 40 ANSI/ASTM F441 All venting mate-
rial in Canada
must be
ULC S636 ap-
proved.
All Vent and Air-Inlet
materials installed on
gas
fired appliances in
CAN/US must meet the
Standards listed in this
Table.
Failure to comply could
result in fire, serious in-
jury or death.
PVC Schedule 40 ANSI/ASTM D1785
Stainless Steel SS UL-1738
Polypropylene PP -
Air inlet piping
and Fittings
2)
PVC - DWV ANSI/ASTM D2265
Stainless Steel SS UL-1738
Polypropylene PP -
Pipe cement PVC ANSI/ASTM D2564
CPVC ANSI/ASTM F493
Primers PVC/CPVC ANSI/ASTM F656
Notes:
1 PVC venting (exhaust and air-inlet) is not permitted within the Closet/alcove of a Closet/alcove installation.
2
The air-inlet does not require high temperature pipe material. Check applicable local codes for acceptable materials.
3 Use only vent gas material suitable for flue gas temperatures of 158
⁰
F (70
⁰
C) or higher.