Weil-McLain 550-110-710/0107 manual 3f Venting direct exhaust installation

GOLD CGi Gas-Fired Water Boiler — Boiler Manual

3f Venting — direct exhaust — installation

1. Do not mix types or manufacturers of vent materi-	Figure 13  Direct exhaust vertical venting
als.
2. Clean all joints before sealing. See vent manufactur-
er’s instructions for cleaning and sealing joints. Use
their specified sealant. Do not use screws.
3. Install vent pipe with seams on top of vent horizon-
tal runs. Follow requirements in Section 3e for vent
termination.
4. Maintain minimum 2” clearance from combustible
materials to vent pipe.
5. Vertical venting — See Figure 13. Follow vent
manufacturer’s instructions for venting through
roof.
• Vent pipe must extend through roof flashing,
jacket or thimble.
• Vent may pass through floor, inside wall or
concealed space when installed according to
vent manufacturer’s instructions.
Sidewall venting — See Figures 14 and 15.
Vent must terminate at least one foot above
anticipated snowline. Vent must be terminated
only with:
• Tee or elbow with integral screen. (Tee may be
mounted either vertically or horizontally. DO
NOT use horizontal tee with CGi-7 or CGi-8.)
• Elbow and termination coupling with screen
(not available for StaR-34).
6. Do not seal vent pipe (slip connector for Saf-T Vent)
to inside or outside plate.
7. If passing through noncombustible wall, provide
hole diameter large enough to insert the vent pipe
	Figure 14  Direct exhaust sidewall venting
(slip connector for Saf-T Vent).
8. Install horizontal drain tee as close as possible
to boiler, in first horizontal run. See Figures 13
and 14.
9. Do not exceed the maximum vent system length
given in Table 4, page 15.
Condensate drain line — use only silicone tubing rated
for at least 400°F for the first 18” of condensate drain
line, then other non-metallic tubing may be used. Us-
ing any other material could cause flue gas leakage,
potentially resulting in severe personal injury, death or
substantial property damage.

On some installations, the condensate drain fitting may be omitted, provided:

•Vent manufacturer shows this option in their instruc- tions.

•Vent is sloped toward termination as shown in dotted lines in Figure 14.

•The vent is installed per Weil-McLain and vent manufacturer’s instructions.

•Condensate drippage from such vents may accumu- late on the ground below. Consider traffic in the area to avoid hazard due to ice accumulation.

18 Part Number 550-110-710/0107