Condensate Line And Over Flow Pressure Switch - Ecoer MGH96 Installation, Operation And Maintenance Manual

Installation, Operation & Maintenance Manual

7.3 Condensate Line and Over Flow Pressure Switch

NOTICE
For horizontal left hand installation (air discharge to the

left), condensate overflow pressure switch hoses need to
be rerouted (see Figure 17).
To achieve higher energy effi ciency than non-condensing furnaces, condensing
furnaces will generate a signifi cant amount of condensate water from combustion
to recover latent heat in the fl ue. Condensate generated from the fl ue must be
collected and discharged to the drain line. For some venting directions and
furnace installations, rerouting of the condensate and/or overfl ow pressure switch
hoses may be required. Follow the instructions below and Figures 13-17 for each
installation.
Follow the information listed below when installing the drain system. Refer to the
following sections for specifi c details concerning furnace drain trap installation and
drain hose hook ups.
The drain trap supplied with the furnace must be used.

The drain line between furnace and drain location must be constructed

of 3/4" PVC or CPVC.
 Ensure that the condensate hose connections between the pressure
switches/inducer drain port and the condensate trap are sloped
downward toward the drain to allow for proper drainage.
The drain line between furnace and drain location must maintain a 1/4"

per foot downward slope toward the drain.
Do not trap the drain line in any other location than at the drain trap

supplied with the furnace.
Do not route the drain line outside where it may freeze.

7.3.1 Standard Right-Hand or Left-Hand Side Drain Hose Connections
DRAIN TRAP
Figure 12 Included Accessories for Condensate Drain Trap Installation
* Only used when exhaust pipe is vented out of the side of the furnace's cabinet
(regardless of installation orientation).
Ecoer Inc. | 07-2021
Ф21 mm Ф18 mm
HOSE HOSE
CLAMPS CLAMPS
Optional Ф14 mm ELBOW
Optional Ф16 mm ELBOW
If the drain line is routed through an area which may see

temperatures near or below freezing, precautions must be taken
to prevent condensate from freezing within the drain line. In this
scenario, it is recommended to add foam insulation around the
drain line, and heat tracing may also be necessary based on the
application.
 If an air conditioning coil is installed with the furnace, a common drain
may be used. An open tee must be installed in the drain line, near the
cooling coil, to relieve positive air pressure from the coil's plenum.
This is necessary to prohibit any interference with the function of the
furnace's drain trap.
NOTICE
The condensate from this unit is acidic, adhere to all local

and national codes when draining condensate. If proper
procedures are not followed, this may lead to property
damage.
NOTICE
Condensate trap at furnace must be PRIMED for proper

draining may not occur. The condensate trap can ONLY
be primed by pouring water into the inducer drain side of
condensate trap.
INCOMING
GAS PIPE
DRAIN TRAP
RUBBER GASKET
MOUNTING
BRACKET
Ф16 mm HOSE
Ф14 mm HOSE
Ecoer 96% AFUE Gas Furnace | 17
Data subject to change