Benchmark Platinum-Edge [ii]: Installation Manual
SECTION 2 – INSTALLATION
OMM-136_E • GF-210 • 12/13/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 26 of 57
2.8 CONDENSATE DRAIN and PIPING
The Benchmark Boiler is designed to condense water vapor from the flue products. Therefore,
the installation must have provisions for suitable condensate drainage or collection. See below
for information on the condensate drain and piping for the various models.
The condensate drain port located on the exhaust manifold (see Figure 2-6a and 2-6b) must be
connected to the condensate trap (P/N 24441), which is packed separately within the unit’s
shipping container. Its inlet and outlet connections contain tapped 3/4” NPT ports.
A sample condensate trap installation is shown in Figure 2-6a and 2-6b. However, the actual
installation details for the trap will vary depending on the available clearances, housekeeping
pad height/dimensions and other prevailing conditions at the site.
NOTE: The following guidelines must be observed to ensure proper condensate drainage:
• The condensate trap inlet must be level with, or lower than the exhaust manifold drain
port.
• The base of the condensate trap must be supported to ensure that it is level (horizontal).
• The trap must be removable for routine maintenance. AERCO recommends that a union
be utilized between the exhaust manifold condensate drain port and the trap inlet port.
• If the condensate trap does not connect directly to the exhaust manifold condensate drain
port, the pipe between the drain and the trap must be stainless steel or aluminum.
• The concrete housekeeping pad must not extend under the condensate assembly.
While observing the above guidelines, install the condensate trap as follows:
Condensate Drain Installation Instructions
1. Connect the condensate trap inlet to the exhaust manifold drain connection using the
appropriate piping components (nipples, reducers, elbows, etc.).
2. At the condensate trap outlet, install a 3/4” NPT nipple.
3. Connect a length of 1” (2.54 cm) I.D. polypropylene hose to the trap outlet and secure with a
hose clamp.
4. Route the hose on the trap outlet to a condensate neutralizer tank or nearby floor drain.
WARNING!
Use PVC, stainless steel, aluminum or polypropylene for condensate drain piping. Do NOT
use carbon or copper components.
If a floor drain is not available, a condensate pump can be used to remove the condensate to an
appropriate drain. The maximum condensate flow rate is:
Maximum Condensate Flow Per Boiler
6 gallons (23 L) per hour
20 gallons (76 L) per hour
8 gallons (30 L) per hour
30 gallons (114 L) per hour
9 gallons (34 L) per hour
34 gallons (128 L) per hour
10 gallons (38 L) per hour
40 gallons (151 L) per hour
17 gallons (64 L) per hour
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