Description
Chimney Pipe Extension That Delivers the Pipe and Rain Cap in One Part
Outdoor installations call for 36 in. of pipe before the rain cap. That normally means two parts and on-site assembly. The Frost Fighter 48809A is the complete chimney pipe extension: 3 ft of pipe with the 6 in. rain vent cap already attached. One Frost Fighter chimney pipe, one box. This flue extension with rain cap mounts straight to the flue collar.
Key Features and Benefits
- The 48809A is a complete chimney pipe extension with the cap factory-assembled. One part number, one box, no on-site assembly.
- This Frost Fighter chimney pipe is a triple-wall flue pipe with a stainless steel outer wall. The triple-wall flue pipe holds heat in the exhaust stream, which keeps the draft pulling even in freezing conditions.
- The 6 in. inner diameter matches every Frost Fighter IDF and IDH indirect-fired heater flue collar. No adapter or reducer needed between the heater and the chimney pipe extension.
- At 36 in. (3 ft), the heater flue pipe and cap give you the full recommended length before the rain cap on outdoor installations.
How It Fits
Fasten the open end of the Frost Fighter chimney pipe onto the heater's flue collar. Joints must be tight, and the pipe cross-section must not be smaller than the collar. Horizontal runs rise 1 in 10 away from the heater. No elbow may exceed 90 degrees. The flue must end in a vertical section at least 2 ft long. Clearance from the flue extension with rain cap to combustibles is 24 in. Venting follows CSA B149.1 in Canada and ANSI Z223.1/NFPA 54 in the US.
Which Heaters Use It
This chimney pipe extension fits every Frost Fighter heater with a 6 in. flue. A 6 in. indirect fired heater flue is standard on the IDF350, IDF500, IDH200QR, IDH350QR, IDH400QR, and IDH500QR. The 6 in. heater flue pipe and cap does not fit the IHS series, which vents at 8 in.; the IHS700H and IHS700P need an 8 in. extension instead. DF direct-fired heaters have no flue.
Specifications
This Frost Fighter chimney pipe covers the full 36 in. flue run and cap in one assembly. It is one of the Frost Fighter heater parts that ships ready to install.
| Spec | Value |
|---|---|
| Frost Fighter Part | 48809A |
| Type | Chimney pipe extension with integrated rain vent cap |
| Construction | Triple-wall, stainless steel outer wall |
| Inner Diameter | 6 in. |
| Outer Diameter | 7 in. |
| Length | 3 ft (36 in.) |
| Weight | 15 lbs assembled |
| Cap Included | Yes, rain and vent cap (operates while heater runs) |
| Fits | Any Frost Fighter heater with a 6 in. flue (IDF and IDH series) |
| Not For | 8 in. flues (IHS700); DF direct-fired heaters (no flue) |
| Clearance to Combustibles | 24 in. |
Buy Chimney Pipe Extension Online from Cleanflow
Cleanflow Utility Supply Company is an authorized Frost Fighter dealer and stocks this Frost Fighter chimney pipe with the Frost Fighter heaters and accessories it fits, plus other Frost Fighter heater parts. Free shipping on orders over $199. Returns accepted within 30 days; email info@cleanflow.ca. Ships across Canada and the USA. Call 1-866-335-1078 to confirm your flue size.
Order the chimney pipe extension as part 48809A.
Frequently Asked Questions
Do I need a flue extension on my heater?
Yes, for outdoor use. Frost Fighter recommends a 36 in. pipe extension before the rain cap on any outdoor flue termination. The 48809A delivers that full length with the cap already in place.
How to vent an indirect fired heater outdoors?
The flue must end in a vertical section at least 2 ft long with a rain cap on top. Horizontal runs rise 1 in 10 away from the heater. Frost Fighter's manuals require 24 in. of clearance to combustibles and a suitable rain cap for outdoor flue terminations.
What size flue pipe for Frost Fighter heater?
IDF and IDH heaters use a 6 in. flue, which is the size the 48809A fits. IHS700 series heaters vent at 8 in. and need a larger extension. DF direct-fired heaters have no flue and take no extension.
Flue pipe with cap or without cap?
The 48809A includes the rain vent cap, factory-attached to the top of the pipe. There is no need to buy or assemble a separate cap. The cap operates while the heater runs, shedding rain and snow while exhaust exits through the louvers.
What is a triple-wall chimney pipe?
A pipe with three layers: an inner flue liner, an insulation layer, and a stainless steel outer wall. The triple-wall design holds heat in the exhaust, which helps the flue maintain draft in cold weather. The 48809A uses this construction.
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