SYMBOL/SKETCH

 

DESCRIPTION

CV FACTOR

RATING

STEAM

 

1¤2

 

3¤4

PSI

F

USE

 

 

 

 

 

2-WAY MOTORIZED VALVE: Electric

 

 

 

 

 

 

 

2-position ¯ow control valve

 

 

 

 

 

 

 

(open/closed). Normally-closed body

 

 

 

 

 

 

 

with manual override lever. Installed in

 

 

 

 

 

 

 

supply line to unit.

 

 

 

 

 

 

 

Application - All standard control and

 

 

 

 

 

 

 

valve packages are based upon

 

 

 

 

 

YES

 

normally-closed valves (valve

 

 

 

 

 

 

electrically powered open and closed

2.3

 

2.3

300

200

15

 

by spring return when electric power

 

PSI

 

 

 

 

 

 

 

removed). Manual override lever allows

 

 

 

 

 

MAX.

 

valve to be placed in the open position

 

 

 

 

 

 

 

for secondary (unit) ¯ushing, constant

 

 

 

 

 

 

 

water ¯ow prior to start-up, etc.

 

 

 

 

 

 

 

Manual override is automatically

 

 

 

 

 

 

 

disengaged when valve is electrically

 

 

 

 

 

 

 

activated. Consult factory for

 

 

 

 

 

 

 

normally-open valve applications.

 

 

 

 

 

 

 

3-WAY MOTORIZED VALVE: Electric

5.0

 

5.0

 

 

 

 

2-position ¯ow control valve (closed to

 

 

 

 

 

 

 

 

 

 

 

 

coil/open to bypass or open to coil/

SERVICE

 

 

 

 

closed to bypass). Normally-closed

 

 

 

 

with manual override lever. Installed in

 

 

 

 

 

 

 

 

 

 

 

 

 

supply line to unit.

 

 

 

 

 

 

 

Application - Same comments as

 

 

 

300

200

N/A

2.8

 

2.8

 

2-way motorized valve except with

 

 

 

 

 

manual override lever engaged the

 

 

 

 

 

 

 

 

 

 

 

 

 

valve is open to both ports and water

BYPASS

 

 

 

 

¯ow will take the path of least

 

 

 

 

 

 

 

resistance through the valve package

 

 

 

 

 

 

 

(not necessarily 100% through the coil).

 

 

 

 

 

 

 

2-WAY PNEUMATIC VALVE:

 

 

 

 

 

 

 

Pneumatic operated 2-way

 

 

 

 

 

 

 

control valve.

 

 

 

 

 

 

 

Application - Speci®ed and supplied by

 

SPECS VARY WITH SUPPLIER

 

others when required as part of a

 

 

factory-assembled valve package.

 

 

 

 

 

 

 

See Table 1 for approved listing of

 

 

 

 

 

 

 

pneumatic valves suitable for

 

 

 

 

 

 

 

installation on various unit models.

 

 

 

 

 

 

 

3-WAY PNEUMATIC VALVE:

 

 

 

 

 

 

 

Pneumatically operated 3-way

 

 

 

 

 

 

 

control valve.

 

 

 

 

 

 

 

Application - Speci®ed and supplied

 

SPECS VARY WITH SUPPLIER

 

by others when required as a part of a

 

 

factory-assembled valve package.

 

 

 

 

 

 

 

See Table 1 for approved listing of

 

 

 

 

 

 

 

pneumatic valves suitable for

 

 

 

 

 

 

 

installation on various unit models.

 

 

 

 

 

 

 

AQUASTAT: Water temperature

 

 

 

 

 

 

 

sensing electrical switch.

 

 

 

 

 

 

 

Application - Clips directly on nominal

 

 

 

 

 

 

 

size 1¤2

or 3¤4 copper tubing for

 

 

 

 

 

 

 

water temperature sensing. Must be

 

 

 

 

 

 

 

correctly located for proper control

 

 

 

 

 

 

 

operation.

 

 

 

 

 

 

NOTES:

1.Motorized 2-way valves have a maximum close-off differential of 25 psi.

2.Motorized 3-way valves have a maximum close-off differential of 10 psi.

27

Page 26 Page 28
Page 27
Image 27
Carrier 42 SERIES SYMBOL/SKETCH Description CV Factor Rating Steam, Use, WAY Motorized Valve Electric, WAY Pneumatic Valve
Page 26 Page 28

42 SERIES specifications

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