York FAN COIL YWC User Manual download pdf (Page 4)

YORK INTERNATIONAL

FORM 115.20-NOM3 (1006)

INSTALLATION

WIRING

All wiring must comply with the local and national code

requirements. Units are provided with wiring diagrams

and nameplate data to provide information required for

necessary ﬁeld wiring.

For power wiring a control box is provided on the

cabinet for connection of power supply and is located

on the opposite side of piping.

Any devices such as fan switches or

thermostats that have been furnished

by the factory for ﬁeld installation

must be wired in strict accordance

with the wiring diagram that is sup-

plied with the unit. Failure to do so

could result in damage or injury.

V A L V E

L (L 1)

N (L 2)

P O W E R

S UP P L Y

G R D

T B 1-1

T B 1-2

T B 3-1 T B 3-2

T B 2-2

T B 2-4

T B 2-3

T B 1-4

T B 2-1

HE A T

OF F

C OO L

ME D

HE A T

C OO L

L O

L 1

T B 3-3 T B 2-5

MO T O R

T B 1-1

T B 1-2

T B 3-1

T B 2-2

T B 3-2

T B 2-3

T B 2-4

T B 1-4

T B 2-1

T B 3-3

MO T O R

OF F

C O O L

ME D

(L1)

N (L 2)

V A L V E

R IS E

AQU AS T AT

P O W E R

S UP P L Y

G R D

HE AT

T B 2-5

T HE R MIS T O R

(UNIT -MT D)

(OP T ION AL)

FIG. 2 - MANUAL CHANGEOVER,

CONTINUOUS FAN, T420 THERMOSTAT.

NO AQUASTAT LOCKOUT

2-PIPE HEAT / COOL

FIG. 3 - AUTO CHANGEOVER,

CONTINUOUS FAN, T421 THERMOSTAT.

LDO6889

LDO6890

3. Mount the unit in its permanent location; making

sure it is level to insure proper drainage

and operation. 2 – ½” holes have been provided on

each end of the unit for securing the unit to the wall

studs.

4. After the drywall has been installed, recheck to

make sure the unit’s front panel is ﬂush with the

exterior drywall surface. Shimming of the unit

may be required to get a seal between the unit and

panel.

5. Install the wall panel to the front of the unit using the

¼-20 x 1-1/2” long, painted, Phillips head screws

(4 on unit sizes 3,4,6 and 8; 6 on unit sizes 10 and

12). ¼” cage nuts are located in the slotted front

panel of the unit.

6. Remove the lower return air grille to get access to

the ﬁlter.

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York FAN COIL YWC User Manual Page 4

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