Raypak Hi Delta 992B-1262B User Manual download pdf (Page 46)

WARNING: Contact the vent material manufacturer

if there are any questions about the appliance

category or suitability of a vent material for Category

II, III or IV applications. Using improper venting

materials can result in personal injury, death or

property damage.

Vent Terminal Location

1. Condensate can freeze on the vent cap. Frozen

condensate on the vent cap can result in a blocked

flue condition.

2. Give special attention to the location of the vent

termination to avoid possibility of property dam-

age or personal injury.

3. Gases may form a white vapor plume in winter.

The plume could obstruct a window view if the ter-

mination is installed near windows.

4. Prevailing winds, in combination with below-freez-

ing temperatures, can cause freezing of

condensate and water/ice build-up on building,

plants or roof.

5. The bottom of the vent terminal and the air intake

shall be located at least 12 in. above grade, includ-

ing normal snow line.

6. Un-insulated single-wall metal vent pipe shall NOT

be used outdoors in cold climates for venting gas

utilization equipment.

7. Through-the-wall vents for Category II and IV

appliances shall not terminate over public walk-

ways or areas where condensate or vapor could

create a nuisance or hazard, or be detrimental to

the operation of regulators, relief valves or other

equipment.

8. Locate and guard vent termination to prevent acci-

dental contact by people or pets.

9. DO NOT terminate vent in window well, stairwell,

alcove, courtyard or other recessed area, unless

previously approved by local authority.

10. DO NOT terminate above any door, window, or

gravity air intake. Condensate can freeze, causing

ice formations.

11. Locate or guard vent to prevent condensate from

damaging exterior finishes. Install a rust-resistant

sheet metal backing plate against brick or mason-

ry surfaces.

12. DO NOT extend exposed vent pipe outside of

building. Condensate could freeze and block vent

pipe.

Condensate Management

Condensate must be routed from the condensate trap

to an appropriate container for neutralization before

disposal, as required by local codes.

Vertical Venting (Category II)

Common Venting System

Manifolds that connect more than one boiler to a com-

mon chimney must be engineered to handle the

combined load. Consult available guides for proper

sizing of the manifold and the chimney. At no time

should the area of the vent be less than the area of the

largest boiler exhaust outlet.

NOTE: During winter months check the vent cap

and make sure no blockage occurs from build-up of

snow or ice.

Note: When vertical height exceeds 25 ft,

consult factory prior to installation.

CAUTION: A properly sized listed vent cap

terminal must be used to evacuate the flue products

from the boilers.

Fig. 41: Vertical Venting (Category II)

*Requires optional vent tee.

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 65 66

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Raypak Hi Delta 992B-1262B User Manual Page 46

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