Installation manual

ManualsBrandsYork ManualsAir ConditionerMILLENNIUM Y14

035-16682-000-E-0303

Unitary Products Group 17

PIPING CONNECTIONS

The hot water pipping must enter the unit through the floor of

the heat section compartment. The access doors to the com-

partment are gasketed so the compartment can be sealed.

However, as added protection for water leakage into the

space, the piping access holes should be sealed with a heat

resistant mastic Figure 11 shows the location of the compart-

ment and piping connections.

STEAM HEAT

The YORK Millennium units (25, 30 and 40 Ton sizes) can be

furnished with a YORK single row steam coil. YORK steam

coils are a factory installed option.

There are no provisions in the coil or control

sequence to prevent freezing of condensate. The

control valve, piping and field installed wiring con-

nections are particularly vulnerable because they

are installed in the vestibule outside of the condi-

tioned air stream. The installing party will be

responsible for properly insulating and installing

power and control wiring, to the actuator and pip-

ing.

In one row hot water coil systems DO NOT exceed

a 40 gallons per minute flow rate.

In two row hot water coil systems Do Not exceed a

80 gallons per minute flow rate

Condensate will freeze on the control valve and

piping if they are not properly insulated. Insulating

the control valve and piping is the responsibility of

the installing party.

Piping access holes should be sealed with a heat

resistant mastic to prevent damage to equipment.

DO NOT use tin based solder. Brazing with tin

based solder could cause equipment damage or

possible injury to tenets of the structure that is

being conditioned.

FIGURE 11 - HOT WATER PIPING CROSS-SEC-

TION

FIGURE 12 - STEAM PIPING CROSS-SECTION

HO T W ATER

COIL

CONDENSING

SECTIO N

IN L E T (2 ")

OUTLET (2")

2.55"

8.38"

2.25"

11.88"

26"

15.8"

88.75"

HEAT SECTION

CO M PARTM ENT

(1 O R 2 R O W )

OUTSIDE OF

BASE RAIL

STEAM