Table of Contents
Advertisement
CGi
SERIES 4 — GAS-FIRED WATER BOILER —
3f
Venting — direct exhaust — installation
1. Do not mix types or manufacturers of vent materi-
als.
2. Clean all joints before sealing. See vent manufac-
turer'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 hori-
zontal 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 snow line. 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
(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 in-
structions.
• 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 drip page from such vents may ac-
cumulate on the ground below. Consider traffic in
the area to avoid hazard due to ice accumulation.
18
Boiler Manual
Figure 13 Direct exhaust vertical venting
Figure 14 Direct exhaust sidewall venting
Part Number 550-142-302/0124
Advertisement
Table of Contents
