Weil-McLain Ultra Manual page 51

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gas fired water boiler
Install condensate line
1. Connect condensate drain tubing to the ½" PVC tee and run to
floor drain or condensate pump (see Figure 73). Use ½" PVC or
CPVC pipe; or 5/8" I.D. tubing.
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. Leave the top of the ½" tee OPEN. This is needed as a vacuum
break.
3. When installing a condensate pump, select one approved for use
with condensing boilers and furnaces. The pump should have an
overflow switch to prevent property damage from condensate
spillage. See Figure 70 for required flow capacity.
4. When sizing condensate pumps, make sure to include the total
load of all Ultra boilers 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 Ultra boiler will be slightly acidic
(typically with a pH from 3.2 to 4.5). Install a neutralizing
filter if required by local codes. See Replacement parts
section at the end of this manual for the Weil-McLain
kit.
Figure 70
Suggested condensate pump capacity, GPH
Minimum recommended condensate pump
Boiler
Ultra-80 2
Ultra-105 3
Ultra-155 4
Part number 550-100-066/0608
— Boiler Manual
capacity, per boiler, GPH
Ultra-230
Ultra-310
—
(continued)
Figure 71
Condensate drain — Ultra-155 & -230 (PVC
tee installation shown applies to all models))
Figure 72
Condensate drain — Ultra-310
6
Figure 73
Condensate pump (by others), typical
8
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51