MDPA2 FCA112515
©2012-2015 ZONEFIRST
®
Page 2
MDPA2 Panel Features
Table of Contents
Installation ……………………………………….2
Operation .……………………………………….3
Wiring ……...………………………………….....3
Checkout ..…………………………………….…3
Troubleshooting ………………………………...4
INSTALLATION
The Digi-Zone Adder (MDPA2) for Plug-In Dampers is a two (2) zone
control panel that is only used to add one or two additional zones to
the MDP3 Zone Panel. A total of fifty (50) MDPA panels may be
added to an MDP3 Zone Panel to get up to one hundred and three
(103) zones.
When installing the MDPA2 panel it is important to pick a central
location (typically in close proximity to the MDP3 control panel) where
it is most convenient to bring all the wires. Most often this is at the
furnace or air handler. It is often closest to power, the HVAC unit
controls and the zone dampers when typically located at or near the
plenum. However this panel can be located remotely from the main
panel and only requires a CAT 5 cable (supplied with MDPA2) in
order to place remotely.
The MDPA2 panel case is made of sturdy ABS plastic and can be
mounted to any flat surface. It is recommended that the panel be
mounted to a wall or return plenum and NOT on the furnace or
plenum where it will be in contact with the hot temperatures.. The
panel can be located in an attic space or in an enclosed cabinet of a
rooftop unit. Insure the panel is not in direct exposure to the
elements.
The cover easily removes from the case by pulling firmly and
separating the cover from the case exposing the circuit board. There
are 4 key-hole mounting points in each corner of the case. The case
has openings in the rear of the case as well as the side for all wiring.
Wiring can come from the back as well as the side in order to make a
neat installation.
System Indicator LEDs
Power Indicator LED
Zone Terminals for
Zone Thermostats
24VAC Transformer
Terminals
Zone Damper RJ11
Plug-In Connections and
LED Indicators
Adder Panel CAT 5
Plug-In (IN)
Connection From
MDP3
Adder Panel CAT 5 Plug-In
Connection (OUT) To Next
MDPA2
Mounting Keyholes
