RADIANT HEATING SYSTEMS
ZONE CONTROL
MODULE
INSTRUCTION SHEET
Table 2: Maximum Number of Zones on a Transformer
Part No.
Part Description 50VA
75VA
100VA
A3020522
Motorized Valve Actuator
6
9
12
A3070526
1" Zone Valve
6
9
12
A3010522
Thermal Actuator
12
19
25
Table 3: LED Definitions
Introduction
The Uponor Zone Control Module
is a printed circuit control and
diagnostic device designed for use
with Uponor Thermostats, Motorized
Valve Actuators (MVAs), Thermal
Actuators or Zone Valves.
The module provides the following.
• A connection to the power supply
transformer
• Interconnections between the
individual thermostats and their
respective MVAs, thermal actuators
or zone valves
• The connection between the end
switches and the pump or boiler relay
The modules are internally fused for
protection from over current or direct
shorts from the power supply
transformer. The end-switch circuit
is also protected from over current
and a 2 amp fuse is factory installed.
Note:
Because the E/S terminals are
completely isolated, the modules
no longer require separate
transformers on R and C and
E/S terminals. Pay careful
attention to transformer sizing
if using only one transformer.
Table 1: Product Descriptions
Part No.
Part Description
Width
Height
A3030003
Three-zone Control Module
6"
2"
A3030004
Four-zone Control Module
8"
2"
Specifications
Power Input
24VAC
End-switch Circuit
Dry contact equivalent nominal
24VAC, 2A maximum
Recommended Thermostat
Wire Size
18GA
Zone Configurations
The Uponor Zone Control Modules
are available in both three- and four-
zone configurations. Boards can be
ganged together to expand the
number of zones.
Note:
The new Zone Control
Modules are note able to be
ganged with older modules.
The new modules have a black
tint base; the old modules
have a green tint base.
Display
Light-emitting diodes (LEDs) indicate
various functions of control. Refer to
Table 3
for LED definitions.
Connecting Instructions
Refer to the following instructions
to properly connect the module.
1. Connect modules in series via a
module jumper (provided).
2. Fasten the jumper within the input and
output blocks of the corresponding
modules (see
Figure 1
on page 2).
LED
Definition
Green
Module has power
Yellow
Shows which zones are calling for heat
Red
Indicates which end switches are closed and
completing the circuit for the pump or boiler relay
