UNLIMITED ZONE EXPANSION

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.PRIORITY TIMER PROTECTION

www.azeltec.com

Intelligent Linking Concept for Zone Controls

END SWITCH DELAY TIMER FOR TWO WIRE TYPE ZONE VALVE

Zone Valve Controls

. Front panel indicator lights

. Field selectable Priority

. Priority timer for protection of a priority zone malfunction and prevention of freeze-ups in the heating zones

. Unlimited zone expansion

. Dual Isolated End Switches for SZ-84/86DX

. Three-minute End Switch delay timer for two wire type zone valve applications. Circulator will start only after the zone valve is fully opened.

. DIP switch for easy setup of two wire type zone valve applications. No need to hook up wire jumper on the third and fourth terminals on each zone

. Works with two, three or four wire type zone valves and thermostats

. Compact and modern design

. Fuse protection

for utilizing full functionality of high efficiency Mod-Con boilers. Pre-wired terminals for circulatorSPDT Priority zone relay switch (N/O Com N/C). Capable of prioritizing DHW pump in a 2-pump system50VA replaceable transformer

. Safety design with all electronic components hiding behind the enclosure for SZ-84/86DX

. Simplified wiring

. Contractor friendly PCB layout

. Easy-Connect Screwless Terminals

. 24VAC transformer output with common terminal provides compatibility with electronic thermostats

. Universal thermostat compatibility

. 100% Factory Tested

. Extended three year warranty

ADDITIONAL FEATURES FOR SZ-V4/SZ-V6

. Isolated End Switch

. Priority End Switch

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.

.

GENERAL FEATURES:

SZ-86DX with both covers removed

i-Link :LEADING CONTROLS FOR THE 21ST CENTURY

The Zone Valve Controls simplify the field wiring and yet control up to six zone valves in a multi-zone hydronic heating system. The contractor friendly Printed Circuit Board eliminates the problem caused by incorrect wiring and saves hours of installation time. There would be no more “messy” look of conventional zone valve installations.

i-Link series

Intelligent Linking System (i-Link) allows unlimited zone expansion with additional i-Link controllers. Field selectable priority with Priority Protection Timer ensures other zones get heat every one hour and prevents freeze-ups in the event of a priority zone failure. The End Switch delay timer let the two wire type zone valves fully opened before turning on the circulator. The panel provides EZ screwless terminal blocks for connections to the thermostats and zone valves. In addition, LED indicators on the front panel provide functional status and easy troubleshooting.

From design to manufacture, each i-Link unit is built on the foundations of quality and reliability. Azel products are quality controlled in order to achieve “total customer satisfaction” - a foundation that you can rely on.

Wiring Diagram

ZONE EXPANSION24Vac In

T1 T1 T2 T2 T3 T3 T4 T4 T5 T5 T6 T6

1 2 3

R C

R W R W R W R W R W R W

THERMOSTATS

Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Zone 6

Y Y R R

24Vac Out

R C

Y Y R R Y Y R R Y Y R R Y Y R R Y Y R R

SZ-84/86DX Zone Valve Control

X2 X2

ON

ZONE 1 PRIORITY

OFF

MASTER SLAVE

TIMER

ES Delay Timer

EndSW 2

ON OFF

ONJUMPER 3&4

Zone 1 2 3 4 5 6

GREEN - CALLED FOR HEAT ORANGE - END SWITCH ENERGIZED

24VAC Input

X1 X1

EndSW 1

Do Not Use

To T TOn Boiler

* Set DIP Switch Jumper3&4 to ON

SPECIFICATIONS

Model: SZ-84DX 4 Zone Valve ControlSZ-86DX 6 Zone Valve Control

Power Supply: 24 VAC, 50/60HzDimensions: 6 3/8”(W) x 6 5/8”(H) x 2 3/4”(D)Electrical Switch Rating: 10 A 1/3 HP @ 120VACThermostat Anticipator Setting: 0.18 AEnclosure: Flame Retardant Plastic 94V0Shipping Weight: 3 lbs.

Model: SZ-V4 4 Zone Valve Control with transformerSZ-V6 6 Zone Valve Control with transformer

Power Supply: 120 VAC, 50/60HzDimensions: 11”(W) x 6 5/8”(H) x 3”(D)Electrical Switch Rating: 10 A 1/3 HP @ 120VACThermostat Anticipator Setting: 0.18 AEnclosure: Aluminum Shipping Weight: 5 lbs.

TYPICAL WIRING DIAGRAM

SZ-V6 WITH COVER REMOVED

Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Zone 6

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

MASTER SLAVE

ON

ZONE 1 PRIORITY

OFF TIMER

Do Not Use* Set DIP Switch Jumper3&4 to ON

POWER

PRIORITY

ZONE VALVES

T2 T3 T4 T5 T6T1

Z1 Z2 Z3 Z4 Z5 Z6

N LCIRC

NC COM NO

Zone 1 N L120 VAC

FU

SE

2.5

AM

P M

AX

XX Delay Timer

ON OFF

ONJUMPER 3&4

1 2 3 4 5 6ZONE EXPANSION

T1 T1 T2 T2 T3 T3 T4 T4 T5 T5 T6 T6

1 2 3

R W R W R W R W R W R W 24VAC OUT

R C X1 X1

ZONE 1

END SWITCH X X

THERMOSTATS

THERMOSTAT(eg. Azel D-135EB)

N L120 VAC

L NCIRC

NC COM NO

Zone 1

DHW CIRCULATORZONE CIRCULATOR

WIRING FOR PRIORITIZINGDHW CIRCULATOR

Boiler/Burner Control

T

T

TT on Boiler with DHW TT Terminals

Boiler Control

T

T

DHW

N N LL