York B2CH180 installation instructions Normal Maintenance

035-18895-000-A-0902

T2 - 80 MINUTE SETTING

T3 - 110 MINUTE SETTING

(Factory Set Point)

T1 - 50 MINUTE SETTING

SHORTING PEGS TO

OVERRIDE TIMER

FOR SERVICE

MOVABLE JUMPER

WIRE TO CHANGE

DEFROST TIMER

FIG. 11 - AMBIENT MODIFIED TIME/TEMPERATURE CONTROL

SECURE OWNER'S APPROVAL: When the system is functioning properly, secure the owner's approval. Show him the location of all disconnect switches and the thermostat. Teach him how to start and stop the unit and how to adjust temperature settings within the limitations of the system.

MAINTENANCE

NORMAL MAINTENANCE

CAUTION: Prior to any of the following maintenance proce- dures, shut off all power to the unit to prevent per- sonal injury.

FILTERS - Inspect once a month. Replace disposable or clean permanent type as necessary. DO NOT replace permanent type with disposable. The dimensional size of the replacement filter must be the same as the replaced filter.

MOTORS

Outdoor fan motors are permanently lubricated and require no maintenance.

Indoor Blower Motor and Drive - The indoor blower motor features ball-bearings that do not require periodic lubrication. Periodic lubrication of the motor and bearings can extend the life of components but is optional.

CAUTION: Damage can occur if the bearings are overlubri- cated. Use grease sparingly.

WARNING:

Perform all maintenance operations on the blower motor with power disconnected from the unit. Do not attempt to lubricate bearings with the unit in operation.

On an annual basis, check the motor for accumulations of dust, etc. that may block the cooling slots in the motor shell. Check for loose, damaged or misaligned drive components. Check that all mounting bolts are tight. Replace defective parts as required.

If desired, every three years remove both pipe plugs at each end shell and clean out any hardened grease or foreign matter. Replace one plug on each end with a clean grease fitting. Using a low pressure grease gun, pump grease (Chevron SR1-2 or equivalent) into the bearing cavity until new grease shows at the open port. Do not over-lubricate. Run the motor for ten minutes until excess grease is purged from the cavity. Replace the plugs.

OUTDOOR COIL - Dirt should not be allowed to accumulate on the outdoor coil surface or other parts in the air circuit. Cleaning should be as often as necessary to keep coil clean. Use a brush, vacuum cleaner attachment, or other suitable means. If water is used to clean coil, be sure power to the unit is shut off prior to cleaning.

NOTE: Exercise care when cleaning the coil so that the coil fins are not damaged.

Do not permit the outdoor air discharge to be obstructed by overhanging structures or shrubs.

Unitary Products Group 15