Carrier 42C,V Manual de instalación descargar pdf (Pagina 65)

Table 7 — Piping Components (cont)

LEGEND

*Check all system component pressure ratings (coils, values,

pumps, etc.) with manufacturer and any applicable local or national

piping codes prior to specifying system pressure rating.

SYMBOL/SKETCH DESCRIPTION

FACTOR RATING*

STEAM

USE

PSI F

MODULATING VALVE (Optional)

(Non-Spring Return, Floating Point Actuator):

Modulating valves are designed to control the flow in

the circuit by making incremental adjustments to the

flow path within the valve.

Application — To control fluid flow in fan coil units.

On the 42DD,SG,SJ,SH commercial fan coil models,

the factory provided modulating valve has application

restrictions. In these models, the valve packages are

located in the airstream, downstream of the coil. Due

to the ambient temperature limitations of the modu-

lating valves, the valves can only be used in the units

listed above with 2-pipe cooling only systems.

4.0 300 200

N/A

MODULATING VALVE (Optional)

(Non-Spring Return, Proportional Type Actuator):

Modulating valves are designed to control the flow in

the circuit by making incremental adjustments to the

flow path within the valve.

Application — To control fluid flow in fan coil units.

On the 42DD,SG,SJ,SH commercial fan coil models,

the factory provided modulating valve has application

restrictions. In these models, the valve packages are

located in the airstream, downstream of the coil. Due

to the ambient temperature limitations of the modu-

lating valves, the valves can only be used in the units

listed above with 2-pipe cooling only systems.

4.0 300 200

N/A

MODULATING VALVE (Requires ETO)

(Spring Return): Modulating valves are designed to

control the flow in the circuit by making incremental

adjustments to the flow path within the valve.

Application — Same comments as non-spring return

except when powered, the actuator moves to the

desired position, at the same time tensing the spring

return system. When power is removed for more

than two minutes the spring returns the actuator to

the normal position.

4.0

300 200 N/A

AQUASTAT: Water temperature sensing electrical

switch. (Line Voltage Controls)

Application — Clips directly on nominal size

in. or

in. copper tubing for water temperature sensing.

Must be correctly located for proper control opera-

tion.

CHANGEOVER SENSOR: Water temperature sen-

sor thermistor.

Application — Sensor shall clamp on the outside

diameter of the pipe. Sensor plate shall bend to allow

its radius to be adjusted to fit the pipe. Sensor shall

be secured to the pipe with mounting clamp. Insulate

the mounting location of sensor on the pipe.

— Coefficient of Velocity

DX — Direct Expansion

ETO — Engineering to Order

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 87 88

Comentarios a estos manuales

Sin comentarios

Carrier 42C,V Manual de instalación Pagina 65

Comentarios a estos manuales

Relacionado con productos y manuales para Acondicionadores de aire del sistema de división Carrier 42C,V