CALEFFI Z1 Z-one Motorized zone valve Instruction Manual

Z1 Z-one Motorized zone valve
Instruction Manual

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 an 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 use a sealed reed switch for the end switch, requiring no minimum current load.

Technical specification

Valve body
Material: – Body: forged brass (*optional low-lead brass available)

• seat: machined brass
• stem: stainless steel
• two o-ring seals and paddle: EPDM Flow:
  1.0, 2.5, 3.5, 5.0, 7.5 Cv Suitable fluids: water and glycol, low-pressure steam

The maximum percent of glycol: 50%
Temperature range: 32 to 240° F (0 to 115° C)
Max. static pressure: 15 psi (1 bar) steam; 300 psi
(20 bar). For models with press tailpieces, 200 psi (13 bar) maximum static.
Max. close-off D pressure: 20 to 75 psi (138 to 517 kPa)
Close-off seat leakage: 100% bubble-tight

Connection:

• sweat: ½”, ¾” 1” & 1 ¼”
• press:½”, ¾” & 1”
• NPT female:½”, ¾” & 1”
• SAE flare:½”
• inverted flare: ½”, ¾” & 1” sweat, fittings separate
  Lay length (press connections): size ½ inch: 3 ½”; size ¾ inch: 35 ⁄8″; size ¾ inch (PL)*: 5″; size 1 inch: 4 1⁄8″
  Low-lead brass models available, see Plumbing and Hydronics Catalog. Complies with NSF/ANSI 372, Drinking
  Water System Components-Lead Content Reduction of Lead in Drinking Water Act, California Health and Safety Code 116875 S.3874, Reduction of Lead in Drinking Water Act, as certified by ICC-ES, file PMG-1360.

**Models with the “L” suffix have one long tailpiece on the outlet to provide an extra long lay length for retrofit convenience.

Actuator
Material: – base and cover: polycarbonate

• base plate: aluminum
  Motor*: – AC voltage: 24 V – 120 V ; 50/60 Hz
  Power requirements: 5.0 W, 7 VA
  Power connections:

• Terminal screws with auxiliary switch: 24 V only
  – Wire lead length: 18” (45 cm), 24 V only 6” (15 cm), 120 V

Auxiliary microswitch:
0.0 A min, 0.4 A max, 24 V (24V actuators);
0.25 A min, 5.0 A max, 250 V (120V actuators)
Ambient temperature range: 32 to 104°F (0 to 40°C) 24, 120 V
Humidity: 95% non-condensing
Full Stroke Time: – On: <60 seconds

• Off: 6 seconds
  Approvals: UL873, cUL Listed & CE
  UL 1995 sec. 18 approved for air plenum and ducts.
  Environmental: Indoor only

Power to Normally Open Actuators should be turned off during extended idle periods.
US Patent 7,048,251

SAFETY INSTRUCTION

This safety alert symbol will be used in this manual to draw attention to safety-related instructions.
When used, the safety alert symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN A SAFETY HAZARD.

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to www.P65Warnings.ca.gov.
CAUTION: All work must be performed by qualified personnel trained in the proper application, installation, and maintenance of systems in accordance with all applicable codes and ordinances.
CAUTION: Over-tightening and breakage can occur with the use of Teflon pipe joint compounds. Teflon provides lubricity so care must be exercised not to over-tighten joints. Failure to follow these instructions could result in property damage and/or personal injury.
CAUTION: System fluids are under pressure or temperature can be hazardous. Be sure the pressure has been reduced to zero and the system temperature is below 100ºF  (38ºC). Failure to follow these instructions could result in property damage and/or personal injury.
CAUTION: Avoid locations with excessive moisture, explosive vapors, corrosive fumes or vibration. Failure to follow these instructions could result in stress corrosion resulting in property damage and/or personal injury.
Caleffi shall not be liable for damages resulting from stress corrosion, misapplication, or misuse of its products.
Approval for low-lead brass: Complies with NSF/ANSI 372, Drinking Water System Components-Lead Content Reduction of Lead in Drinking Water Act, California Health and Safety Code 116875 S.3874, Reduction of Lead in Drinking Water Act, as certified by ICC-ES, file PMG-1360.

LEAVE THIS MANUAL FOR THE USER

Flow characteristics

Installation

• The valve can be installed either vertically or horizontally, with the actuator in any position, except upside down.

• If it is installed inside an enclosure it is important to ensure that there is adequate ventilation inside the enclosure itself.

• The three-way valve cannot be transformed into a two-way valve and vice versa.

• When zone valves are installed, the direction of flow must be observed.

• Two-way zone valves can be installed either in the supply or return piping; the direction of flow indicated by the arrow on the body of the valve must be observed.

• Three-way zone valves use the normally closed actuator only (rotate 180° the valve body for normally open application).

Operation of the normally closed valve

| 2-wa| 3-way
---|---|---
N.C. without power| Port “A” closed| Port “A” closed
Port “B” open
Port “AB” open
N.C. opened with the power| Port “A” open| Port “A” open
Port “B” closed
Port “AB” open
N.C. manually opened| Port “A” open| Port “A” open
Port “B” open
Port “AB” open

Manual opening
(Normally closed actuator only)
Use the manual opening lever to open the valve. When the power is restored the manual control is automatically overridden. The auxiliary microswitch in 24 V actuators is tripped when the unit is put into the manual open position. This helps during start-up to check if the wiring is correct without firing the valve electrically with the thermostat. Note: The manual open lever travels through nearly all of the actuator strokes, providing a good indicator of the valve’s position.

Wiring diagram

Remove the actuator

1. Move the manual open lever to the lock open position.
2. Press the push button in and pull the actuator up.
   

Install the actuator

1. Move the manual open lever to the lock open position.
2. Verify the correct position of the valve stem into the mating actuator hole. Move stem if required to align.
3. Press the push button in and slide the actuator onto the valve body, release the push button.

Caleffi North America, Inc.
3883 West Milwaukee Road
Milwaukee, WI 53208
T: 414.238.2360 F: 414.238.2366

Documents / Resources

| CALEFFI Z1 Z-one Motorized zone valve [pdf] Instruction Manual
Z1, Z-one Motorized zone valve, Z1 Z-one Motorized zone valve, Motorized zone valve, zone valve, valve
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References

• Caleffi Hydronic Solutions | Caleffi S.p.a.
• P65Warnings.ca.gov

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