Enerco ERXL-175L Benutzerhandbuch

Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

SECTION 4

Venting / Ducting

General Requirements

Heater must be vented in accordance with specification ANSI Z223.1
- latest revisions. Partial information relating to this specification is
provided in this section with regard to size and configurations for
venting arrangements (see Figures 12, 13, 14, 15, 16). For complete
information consult ANSI Z223.1 - latest revision and applicable local
codes. Use the following guidelines to help insure an adequate, safe
venting arrangement.

a) Be sure that method selected for venting

heater complies with all codes as required for
each particular location.

b) Exhaust end of heater will accept a four (4”)

inch flue pipe using the flue pipe adapter.

c) Heater may be vented to the outdoors either

vertically or horizontally.

d) If heater is to be vented horizontally:

1) Vent must exit building not less than seven (7’)

feet above grade when located adjacent to public
walkways.

2) Vent must terminate at least three (3’) feet above

any forced air inlet located within ten feet (10’).

3)Vent must terminate at least four (4’) feet below,

four (4’) feet horizontally from, or one (1’) foot
above any door, window, or gravity inlet into any
building.

4) Vent terminal shall be located at least twelve (12”)

inches from any opening through which vent gases
could enter the building.

e) Vent terminal must be beyond any combustible

overhang.

f) If condensation in the flue is a problem, the

flue length should be shortened or insulated.

g) For vent specifications all of the following

conditions must be met.

1) Maximum total vent length allowed in forty-five

(45’) feet.

2) Maximum outside air supply duct allowed forty-five

(45’) feet.

3) Maximum total vent length plus outside air supply

length plus extension package shall not exceed sixty
-five (65’) feet.

4) Under length conditions 1) through 3) above — a

total of two (2) elbows are allowed for vent and
outside air supply together. Subtract fifteen (15’)
feet per additional elbow from maximum length
allowed if more than two (2) elbows are used.

Alternative Arrangements / Optional Equipment for Venting

Unvented Operation

a) Sufficient ventilation must be provided in the

amount of 4 CFM per 1,000 BTU/hr. firing rate.

b) Refer to ANSI Z223.1 - latest revision, NFPA-54

and local codes for additional information.

c) Use of optional outside combustion air is not

recommended with unvented heaters due to
pressure considerations.

Horizontal Venting

a) In combustible or noncombustible walls,

use Tjerblund VH1-4” (Stk. #19022). Follow
vent manufacturer’s instructions for proper
installation. (Alternative vent Enerco Stk.
#19023).

b) Four (4”) inch O.D. flue pipe is required. Thirty

(30’) feet maximum length is recommended.
Up to forty-five (45’) feet maximum may
be used if insulated to prevent excess
condensation. (See General Requirements on
page 21 for additional information).

c) All flue joints should be sealed using suitable

product such as General Electric RTV106 or
Permatex Form-A-Gasket Red High Temperature
Silicone Adhesive Sealant.

d) Vent terminal should be installed at a height

sufficient to prevent blockage by snow.

e) Building materials should be protected from

degradation by flue gases.

Vertical Venting a) Four (4”) inch O.D. flue pipe, maximum

forty-five (45’) feet in length may be used as
shown with approved vent cap. (See General
Requirements on page 21 for additional
information.)

b) An insulated thimble may be required to pass

through combustible structures (check local
codes).

c) All flue joints should be sealed using suitable

products (see recommendation for horizontal
venting.)

Draft Hood Venting

a) Refer to ANSI Z223.1 - latest revision, NFA-54

for heights and vent sizes recommended
for proper venting. (Check local codes for
additional information.)

b) Minimum six (6”) inch O.D. vent is

recommended.

Common Venting

a) Horizontal run to vent must never exceed 75%

of the vertical height of the vent. Refer to ANSI
Z223.1 - latest revision, NFA-54 for proper vent
sizes and installation.

b) Open area of common vent must equal the

sum of the open area of individual vents
connected to it. (See chart and diagrams -
page 25.)

c) Use double wall vent as required (check

codes.)

d) Heaters sharing a common vent must be

controlled by the same thermostat.

e) All joints must be sealed using suitable

products (see recommendation for horizontal
vent - page 24.)

f) Connections to common stack must be

positioned to avoid direct opposition between