CeilAir CW series Návod k obsluze stáhnout pdf (Strana 10)

(©July, 2008)

CeilAiR OHS Series Installation, Operation & Maintenance Manual

ir Technology Systems, Inc.

1.6 General Design

The

CeilAiR

unit is housed in an aluminum frame type cabinet and is rated for indoor use. Access panels are located

on the front and rear of the cabinet for easy access to all components. Additional access may be obtained to some

components through the bottom of the unit on spot cooler configurations. The unit has an electrical box inside the

cabinet with a removable panel for accessing the electrical components. Operator controls may be conveniently

located on a wall within the space to be conditioned.

NOTE

Customer specified non standard features or design variations may not be described in this manual. Refer to

the installation and electrical drawings supplied with your unit for details on additional feature(s). In some

cases, an addendum to this manual may also be included to further describe the feature(s).

1-6

1.6.1 Electric Box Access

The electrical components are protected in an enclo-

sure located in the cabinet behind an access panel.

Before opening the access panel, turn off power at the

main power service disconnect switch. This removes

power from the system controller and shuts the unit

off.

1.6..2 Coil(s)

The cooling and optional hot water reheating coils are

aluminum finned/copper tube construction. The coils

are leak tested and cleaned before installation by the

factory.

1.6.3 Blower

The unit is equipped with a centrifugal blower with

forward curved blades. The blower is contained in a

double-width, double-inlet housing. The blower is

dynamically and statically balanced to minimize

vibration.

The blower motor is ODP industrial duty and utilizes

permanently lubricated ball bearings. Smaller

CeilAiR

units (models OHS-012/040) use direct drive blowers

(except “H”-series models configured for horizontal

discharge).

Larger units (models OHS-048/120) and horizontal

discharge units (models OHS-012/040-H), use a belt

driven blower. The belt driven blower motor is mounted

on an adjustable base for belt tensioning and is

furnished with an adjustable pitch sheave to adjust

blower speed (see Figure 13).

1.6.4 Temperature Sensor

As a standard for systems utilizing a wall mounted A-

Tech 1.1 or A-Tech 1.2 thermostat, the temperature

sensor is built into the thermostat for room air control.

The sensor monitors the room air conditions and

provides input signal(s) to the system controller. The

system controller manages the operation of the A/C

unit consistent with the setpoints entered.

As an option, the temperature sensor may be shipped

loose for field installation in the room to be condi-

tioned. Refer to the electrical drawing supplied with

your unit for details specific to your system.

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