Instructions

ManualsBrandsCaleffi ManualsHeating SuppliesZ-One 1/2" NPT, 3-Way Diverting Brass Valve Body, 30 PSI (3.5 Cv)

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Z-one™ Z1, Z2, Z3 Series

Function

The Z-one, a two-position spring return zone valve,

is used in heating and air-conditioning systems.

The Z-one series consist of a Z1 actuator which is

easily attached to a Z2 (2-way) or Z3 (3-way) valve

body. Z1 actuator is equipped with or without

auxiliary switch.

The Z-one actuator has a synchronous motor that

winds the return spring and moves the valve paddle

to the desired position. When power is removed the

actuator spring returns the valve paddle. 24V

actuators (except HCS) use sealed reed switch for

end switch, requiring no minimum current load.

US Patent 7,048,251

Technical Characteristics of Body

Material: - body: forged brass

(optional lead-free brass)

- seat: machined brass

- stem: stainless steel

- two o-ring seals EPDM

- paddle EPDM

Medium: water and glycol

Maximum percent of glycol: 50%

Temperature range: 32 to 240°F (0 – 115°C)

Max. static pressure: 15 psi (1 bar) steam

300 psi (20 bar)

Connection: - sweat ½”, ¾” 1” & 1 ¼”

- NPT ½”, ¾” & 1”

- SAE flare ½”

- inverted flare ½”, ¾” & 1” sweat fittings

separate

Technical Characteristics of Actuator

Material: - base and cover: polycarbonate

- base plate: aluminum

Motor: - voltage: 24 VAC 50/60 Hz Class 2

120 VAC 50/60 Hz

208 VAC 50/60 Hz

230 VAC 50/60 Hz

277 VAC 50/60 Hz

Wire lead length: 6” (15cm), 24V only -18” (45cm)

Power requirements: 5.0 W, 7 VA

Ambient temperature range: 32 - 104ºF (170ºF optional)

Auxiliary switch: 24 VAC: 0 A min,

0.4 A max, 24 V

120-277 VAC, HCS:

0.25A min, 5A max, 250 V

Humidity: 95% non-condensing

Approvals: UL874, cUL Listed & CE

UL 1995 sec. 18 (air plenum & ducts)

Normally Open Actuators must be powered down

during off-season.

Summary of content (4 pages)

PAGE 1
www.caleffi.com NA10073.02 Z-one™ Z1, Z2, Z3 Series Function The Z-one, a two-position spring return zone valve, is used in heating and air-conditioning systems. The Z-one series consist of a Z1 actuator which is easily attached to a Z2 (2-way) or Z3 (3-way) valve body. Z1 actuator is equipped with or without auxiliary switch. The Z-one actuator has a synchronous motor that winds the return spring and moves the valve paddle to the desired position.
PAGE 2
Flow Characteristics Connection size Flow Coefficient Max. Close-off P 1/2" 1.0 Cv (0.9 kv) 75 PSI (517 kPa) 2.5 Cv (2.2 kv) 50 PSI (345 kPa) 3.5 Cv (3.0 kv) 30 PSI (207 kPa) 5.0 Cv (4.3 kv) 25 PSI (172 kPa) 7.5 Cv (6.5 kv) 20 PSI (138 kPa) 7.5 Cv (6.5 kv) 20 PSI (138 kPa) 1/2" 3/4" 1/2" 3/4" 3/4" 1" 3/4" 1" 1" 1 1/4" Installation The valve can be installed vertically or horizontally, but not turned upside down. - A 3-way valve cannot be transformed into a 2-way valve and vice versa.
PAGE 3
-way installed on the supply in diverting configuration (NC) A B (NO) 3-way installed on the return AB 3-way valve with normally closed actuator (Note: 3-way uses only normally closed actuator) Operation of Normally Closed Valve 2-way N.C. without power Port “A” closed N.C. opened with power Port “A” opened N.C. manually opened Port “A” opened Manual Open (NC act only) The manual opening is achieved by moving the manual opening lever to the locked position.
PAGE 4
Removing the Actuator 1 2 1. Move the manual open lever to the lock open position. 2. Press the push button in and pull the actuator up. Installing the Actuator 1. Move the manual open lever to the lock open position. 3. Verify the correct position of the valve stem into the mating actuator hole. Rotate stem if required to align. 4. Press the push button in and slide the actuator onto the valve body, release the push button.