Installation — assembly – Weil-McLain GOLD CGs User Manual

Page 16

GOLD CGs Gas-F

GOLD CGs Gas-Fired W

ired W

ired Water Boiler

ater Boiler

Part Number 550-141-873/0502

Step 5

Install rain cap

1. On roof, cut 4

¹⁄₂" hole in top of rain cap and

install cap over protruding vent pipe. Slide
elastomer flashing down around vent pipe
and tuck lip into cap’s top opening.

2. Connect termination coupling to vent pipe

using vent pipe manufacturer’s specified
sealant.

9. Installation — assembly

continued

Finish installation

1. Complete vent piping to boiler, making sure to follow vent pipe manufacturer’s instructions and Weil-McLain

vent manufacturers special gas vent system vent and combustion air venting supplements.

2. Use any of the following to install combustion air connector piping from tee to boiler, making sure to seal all

joints and seams:

a. 3" Flexible dryer vent — A piece of 3" galvanized is required at each end to adapt. Seal all pipe joints and

seams between pipe and dryer vent with approved sealant.

b. Galvanized or aluminum single wall pipe — Seal all joints and seams using approved sealant.

c. 3" PVC — Seal all joints using PVC cement.

Condensate drain line

— A condensate drain fitting is always required for through-roof vents. Follow vent

manufacturer’s instructions to install 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. Using any other material could cause flue gas leakage,
potentially resulting in severe personal injury, death or substantial property damage.

Multiple boilers may be vented with vent terminations at the same height. Space terminations to provide a
minimum of 1 fott between pipes for U.S. installations. For Canadian installations, provide clearances required
by B149.1 or B149.2 Installation Code.

Step 6

Vent pipe

Elastomer
flashing

Rain cap

87310

Figure 17

Install rain cap