Install Condensate Line - Weil-McLain WM97+ Manual

WM97+ -
gas fired water boiler

Install condensate line

Prepare condensate trap assembly
1. Remove the condensate trap kit from the accessories bag.
2. See Figure 47. The left image shows the complete condensate trap
kit.
3. Remove the flexible drain tube nut, item 2.
4. Push the flexible tube gasket ring onto the end of the flexible tube
(item 1) as shown in Figure 47. The tube should extend through
the gasket (item 3) about ¼ inch.
5. Insert the flexible tube and gasket into the drain fitting. When in
position, the offset edge of the gasket ring will rest on the shoulder
of the drain fitting as shown in Figure 47, detail 6.
6. Secure the flexible tube in place by screwing on the nut, item 2.
Finger tighten securely.
Install the condensate trap assembly
1. Insert the condensate trap ball, Figure 47, item 5 into the trap
body (item 4).
The condensate trap ball MUST be in place in the con-
densate trap assembly to prevent possible flue gas leakage
through the condensate drain system.
2. Loosen the top nut on the trap body.
3. Slide the trap assembly onto the boiler condensate outlet. Firmly
hand tighten the upper nut to secure the condensate trap in place.
Condensate drain system
Install condensate drain by connecting tubing or PVC pipe
1.
to the flexible drain line. Run the drain tubing or piping to a
floor drain or condensate pump
in a ¾" PVC coupling. Run minimum ½" PVC for the piping to
drain or condensate pump.
Use materials approved by the authority having jurisdic-
tion. In the absence of other authority, PVC and CPVC
pipe must comply with ASTM D1785, F441 or D2665.
Cement and primer must comply with ASTM D2564
or F493. For Canada, use CSA or ULC certified PVC or
CPVC pipe, fittings and cement.
2. Select a condensate pump (if used) that is approved for use with
condensing boilers and furnaces. The pump should have an over-
flow switch to prevent property damage from condensate spillage.
The pump should have a minimum capacity of 2 GPH for the
WM97+70, or 3 GPH for the WM97+110.
3. When sizing condensate pumps, make sure to include the total
load of all appliances connected to it.
The condensate line must remain unobstructed, allow-
ing free flow of condensate. If condensate is allowed to
freeze in the line or if the line is obstructed in any other
manor, condensate can exit from the boiler tee, resulting
in potential water damage to property.
Condensate from the WM97+ boiler will be slightly acidic
(typically with a pH from 3.2 to 4.5). Install a neutralizing
filter when draining into metal pipe and if required by
local codes. See Replacement parts section at the end of
this manual for the Weil-McLain kit.
Part number 550-142-058/0811
— Boiler Manual
. The flexible drain line will fit
Figure 47 Condensate trap assembly
Figure 48
Condensate trap assembly into jacket
43