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VIII. Condensate Disposal
A. General
1. Note the following when disposing of the
condensate:
a. Condensate is slightly acidic, typical pH around
3.5 - 4.5. Do not route the drain line through areas
that could be damaged by leaking condensate.
b. Use continuous Teflon, high temperature silicone
tubing, or other tubing material compatible with
flue gas condensate for condensate piping.
c. Do not route or terminate the condensate drain
line in areas subject to freezing temperatures.
d. If the point of condensate disposal is above
the trap, a condensate pump is required to
move the condensate to the drain. Select
a condensate pump approved for use with
condensing appliance—and equipped with an
overflow switch.
e. Do not attempt to substitute another trap for one
provided with the appliance.
f.
Slope condensate drain pipe at least 1/8" per foot
in the direction of discharge.
2. Refer to Table 18 when sizing condensate drain line,
pump and neutralizer kit.
Table 18: Maximum Condensate Flow
Maximum Condensate
AMP Model
1000
1250
1500
2000
2500
3000
3500
4000
NOTICE
NOTICE
Do not crimp condensate drain lines or reduce
drain line inner diameter size.
Do not manifold condensate drains and vent drains
together.
Consult local authorities regarding disposal of flue
gas condensate into the public waste water system.
Do not use metallic pipe or fittings for condensate
drain lines.
Flow Rate (GPH)
9.00
10.32
12.24
16.10
18.25
21.40
23.10
24.00
B. Condensate trap installation
1. Locate the condensate trap assembly shipped loose
with this appliance.
2. Install the condensate trap on the lower rear of the
appliance as shown in Figure 13.
3. Connect condensate float switch lead wires to
terminals 75 and 76 on PCB 1.
Flue Gas Trap
1" PVC Union
Cleanout Port
Outlet (1" Socket Connection)
Figure 13: Condensate Trap Assembly
4. The flue gas trap prevents flue gases from escaping
into the boiler room.
5. The float switch interrupts the limit string in the
event the drainage of the condensate is blocked.
37
Float Switch
Vent
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