Owner`s manual
Motorized Zone Valves
Honeywell Water Product Solutions
63-8702 31
MZV Series Motorized Zone Valves
Honeywell MZV Series is the first linear zone valve with a built-in
balancing plug that permits pre-balancing for each zone.
• Rack and pinion linear design.
• Fast acting, 10 seconds to open, 5 seconds to close.
• Two piece rack design to extend service life.
• Low power consumption, 8 valves, 40 VA transformer.
• External valve position indicator.
• Quiet operation, no water hammer.
• Built-in tamper resistant balancing valve for pre-balancing.
• High torque, constant speed synchronous motor.
• Cooler running, longer life motor with heavy duty gearbox.
• Operator can be replaced without draining system.
• Manual opening feature.
• Replaceable valve cartridge.
• Large adjustable flow, 1/2 in. 3/4 in. Cv 5.8; 1 in. 7.0 Cv; 1-1/4 in. Cv
7.0.
• Motor CSA recognized.
• 4 wire operator with auxiliary switch.
• 2 wire without switch, 24 in. leads.
• Compatible with programmable thermostats.
• Bronze casting; brass/stainless trim.
• USA Patent Nos. 5,529,282; D369,650; 5,941,500; 6,032,924.
• UK Patent No. 2,052,382. 24 VAC, 60 Hz, 0.25 ampere.
Dimensions Diagram Patented long life rack and pinion design with built in balancing
valve.
Application: Residential or Commercial Zoning for hot water heating or
chilled water air conditioning systems, fan coil units or indirect water
heater service.
Body Pattern: Two-way
Voltage: 24 Vac
Frequency: 60 Hz
Maximum Ambient Temperature: 240 F (115 C)
Pre-balance valve
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1/2”
3.3
3.3
3.8
3.8
1.0
.8
1.0
1.0
4.8
4.8
4.8
4.8
.7
.7
.8
.8
3/4”
1”
1-1/4”
M23259
E
1.6
1.6
1.6
1.6
C
B
AED
SIZE
1 IN.
3/4
525
Size
Product Number
Pipe Size
Connection Type
Maximum Close-off
Pressure (psi)
Maximum Water Pressure
(inch) DN (psi) (kPa)
MZV524-T 1/2 in. DN15 NPT 20 psi 125 psi 862 kPa
MZV524E-T 1/2 in. DN15 NPT 20 psi 125 psi 862 kPa
MZV525 3/4 in. DN20 — 20 psi 125 psi 862 kPa
MZV525-T 3/4 in. DN20 — 20 psi 125 psi 862 kPa
MZV525E 3/4 in. DN20 — 20 psi 125 psi 862 kPa
MZV525E-T 3/4 in. DN20 — 20 psi 125 psi 862 kPa
MZV526 1 in. DN25 — 17.5 psi 125 psi 862 kPa
MZV526-T 1 in. DN25 NPT 17.5 psi 125 psi 862 kPa
MZV526E 1 in. DN25 — 17.5 psi 125 psi 862 kPa
MZV526E-T 1 in. DN25 NPT 17.5 psi 125 psi 862 kPa