5.Vent termination must be a minimum of 4' (1.2m) below or 4’ (1.2m) horizontally from any soffit vent or
6.Vent must be a minimum of 6' from an inside corner formed by two exterior walls. If possible, leave a 10' clearance.
7.Vent termination must be a minimum of 10' (3m) from any forced air inlet (includes fresh air inlet for other appliances, such as a dryer).
8.When termination is routed through an exterior combustible wall the vent must be supported using a listed clearance thimble. Where local authorities permit, a single section of type
9.For horizontal venting, the vent pipe shall be supported with hangers no more than 3ft. (1m) apart to prevent movement after installation.
D – HORIZONTAL VENTING – COMMERCIAL
1.Horizontal commercial installations are for buildings which are not attached to living spaces. The vent may be single wall vent material installed according to the sections
Venting A - General Recommendations and Requirements and C - Horizontal Venting General and
D - Horizontal Venting - Commercial. Refer to figure 3.
2.The vent pipe diameter for horizontal commercial installations shall be 4" (101mm) on the 45 and 75units. In all cases a flue transition piece (supplied) is required to fit over the outlet of the induced draft assembly on the appliance.
3.Refer to table 2 for maximum vent connector lengths.
4.Select a wall termination point that will maintain ¼” rise per foot slope of horizontal run of vent pipe. The vent may be single wall material minimum 26 GSG (0.46mm) galvanized steel or equivalent grade stainless steel. Seal single wall vent material according to the section A - General
Recommendations and Requirements.
5.For upward sloped vent a condensate tee and drain must be installed within the first 5’ (1.5m) from the unit heater to protect the appliance. If a flexible condensate drain line is used, the drain line must include a loop entering the structure. If the unit is shut down for an extended period of time and will be exposed to
E – HORIZONTAL VENTING – RESIDENTIAL
1.For horizontal residential installations these units are certified as Category I appliances. The vent may be single wall material minimum 25 GSG (0.46mm) galvanized steel or equivalent grade stainless steel. Venting A - General Recommendations and Requirements and C - Horizontal Venting General and E - Horizontal Venting - Residential. Refer to figure 6 .
2.The vent pipe diameter for horizontal residential installations shall be 4" (101mm) on both 45 and 75 units. A standard vent transition is required at unit in addition to the transition supplied with the unit.
3.The maximum vent length is 5’ (1.5m) plus one
4.The vent must maintain a ¼” rise per foot of slope upwards toward the termination.
CONDENSATE DRAIN THROUGH TEE PIPE AND DRAIN LOOP
UPWARD SLOPE ON HORIZONTAL
MAY BE SINGLE WALL (26 GSG) GALV. OR EQUIV. STAINLESS STEEL SEALED ACCORDING TO THESE INSTALLATION INSTRUCITONS. SLOPE: + 1/4 INCH FOR 1 FOOT RUN MINUMUM.
| FLUE TRANSITION |
| (PROVIDED) |
| LISTED THIMBLE |
| THROUGH COMBUSTIBLE |
| WALL |
INDUCED DRAFT BLOWER |
|
NOTE - MINIMUM HORIZONTAL LENGHT 3 FT. (914MM), |
|
NOT INCLUDING CAP FOR TERMINATION. REFER TO | DRAIN LOOP WITH WATER |
TABLE 2 FOR MAXIMUM LENGTH AND NUMBER OF | TRAP (TO CONDENSATE DRAIN) |
ELBOWS. |
|
12 INCHES MIN.
(30.5 CM)
VENT TERMINATION
CAP
12” (30.5 CM)
MINIMUM ABOVE ALL HIGHEST SNOWFALL
COMMON VENTING NOT ALLOWED WHEN HORIZONTALLY VENTING THE UNIT HEATER
FIGURE 3
Enerco Compact Unit Heater | 7 | Operating Instructions and Owner’s Manual |
