Product Overview

. 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 circulator
SPDT Priority zone relay switch (N/O Com N/C). Capable of
prioritizing DHW pump in a 2-pump system
50VA 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
.
.
.
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 EXPANSION
24Vac 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
End
SW 2
ON
OFF
ON
JUMPER 3&4
Zone 1 2 3 4 5 6
GREEN - CALLED FOR HEAT ORANGE - END SWITCH ENERGIZED
24VAC Input
X1 X1
End
SW 1
Do Not Use
To T T
On Boiler
* Set DIP Switch
Jumper3&4 to ON