Johnson Controls Essential Information on York TG9S Condensate Drain and Venting

364861-UIM-B-0708

SECTION VII: CONDENSATE PIPING AND FURNACE VENTING CONFIGURATION

CONDENSATE DRAIN LOCATION

As shipped from the factory:

•For all 040, 060, & 080K input furnaces the main drain is plumbed through the casing right-side opening when viewed from the front of the furnace.

•For all 100, 120, & 130K input furnaces the main drain is plumbed through the casing left-side opening when viewed from the front of the furnace.

NOTE: On 130K BTU models, there is no provision for the vent to exit the top of the cabinet, the vent must always exit one of the sides.

NOTE: The Figures 23 - 26 show the condensate drain arrange- ment for the various possible furnace and vent blower positions.

The condensate hoses must slope downwards at all points.

The condensate water will flow to the drain better id a tee with a short, open end, length of pipe is installed in the drain line. The top of the pipe should terminate at least to the middle of the condensate pan which is located inside the furnace.

The furnace condensate pan is self priming and con- tains an internal trap to prevent flue gas leaking. Do not install an external condensate trap.

When drain hose routing changes are required (shown in Figures 23- 26), be sure to cap all un-used openings.

If rerouting hoses - excess length should be cut off so that no sagging loops will collect and hold condensate - which will cause the furnace to not operate.

No hose clamps are needed for connecting to the condensate pan.

The condensate drain from the furnace may be connected in com- mon with the drain from an air conditioning coil if allowed by local code.

Condensate must be disposed of properly. Follow local plumbing or wastewater codes. The drain line must maintain a 1/4" per foot (0.635 cm per meter) downward slope to the drain.

CONDENSATE DRAIN TERMINATION

A condensate sump pump MUST be used if required by local codes, or if no indoor floor drain is available. The condensate sump pump must be approved for use with acidic condensate.

DO NOT terminate condensate drain in a chimney, or where the drain line may freeze. The line must terminate at an inside drain to prevent freezing of the condensate and possible property damage.

DO NOT trap the drain line at any other location than at the conden- sate drain trap supplied with the furnace.

CONDENSATE DRAIN TRAP AND DRAIN FREEZE PROTECTION

Special precautions MUST be made if installing furnace in an area which may drop below freezing. This can cause improper operation or damage to the equipment. If the furnace is installed in an area that has the potential of freezing, the drain line must be protected. Use a 3 to 6 watt per foot at 115 vac, 40º F (4.4° C) self-regulating, shielded and waterproof heat tape. Wrap the drain line outside of the furnace with the heat tape and secure with ties. Follow the heat tape manufacturer's rec- ommendations.

Use only Propylene Glycol (RV anti-freeze) to winterize the furnace. Refer to the manufacturer’s specification to ensure that it is compat- ible with plastics and other components of the furnace. DO NOT use Ethylene Glycol anti-freeze in the furnace.

16 Johnson Controls Unitary Products