Condensate drain trap, Heat pump piping sizes and connections – Greenheck ERCH (476054) User Manual
Page 20
General Description - NOT model specific
Model ERCH Energy Recovery Ventilator
®
20
Condensate Drain Trap
This unit is equipped with a stainless steel condensate
pan with a 1-inch MPT stainless steel drain connection.
It is important that the drain connection be fitted with a
P trap to ensure proper drainage of condensate while
maintaining internal static pressures.
A P trap assembly (kit) is
supplied with each unit and is
to be assembled and installed
as local conditions require and
according to the assembly
instructions provided with the
P trap. If local and area codes
permit, the condensate may
be drained back onto the roof,
but a drip pad should be provided beneath the outlet.
If local and area codes require a permanent drain line,
it should be fabricated and installed in accordance with
Best Practices and all codes.
In some climates, it will be necessary to provide freeze
protection for the P trap and drain line. The P trap
should be kept filled with water or glycol solution at
all times and it should be protected from freezing to
protect the P trap from damage. If severe weather
conditions occur, it may be necessary to fabricate a P
trap and drain line of metal and install a heat tape to
prevent freezing.
Pipe Size
(in. FPT)
Model
Tonnage
Number of
Connections
1
ERCH-20
4
2
ERCH-45
8
2
1.25
ERCH-20
5
2
ERCH-45
10
2
1.5
ERCH-20
6
2
ERCH-45
12.5
2
15
2
ERCH-55
15
2
2
ERCH-55
17.5
2
20
2
ERCH-90
20
2
25
2
30
2
Heat Pump Piping Sizes and Connections