Proliphix NT20e User manual

Model NT20e
Installation Guide

Rev 1.4 Page 2 of 14
1. Preparing for Installation
CAUTION
Do not remove the NT20e from the Electro-static bag until instructed from
this installation guide. The NT20e is extremely sensitive to ESD which
can cause damage to the electronic components on the NT20e circuit
module. The ESD bag protects the NT20e from ESD.
Installation Overview
The Proliphix family of thermostats provide a rich set of innovative features including the
ability to configure via a graphical interface locally or from any remote location. There
are several steps involved to physically install the unit, configure the required network
settings and remote access. This document covers the physical installation only. For
configuration or remote access refer to the user guides.
¾If you are replacing an existing thermostat, mount the NT20e in place of the
existing one if possible. If you are installing the NT20e in a new location
follow these guidelines:
¾You will need a #1 or #2 Phillips head screwdriver (small) and Drill with a
3/16" or 7/32" bit for this installation.
¾Locate the NT20e on an inside wall, about 5 feet (1.5m) above the floor, and
in a room that is used often.
¾Install the CAT5, CAT5E or CAT6 cable from wiring center to location of
NT20e
¾Do not install the NT20e where there are unusual heating conditions, such as:
sunlight, near a lamp, radio, television, radiator register, or fireplace; near hot
water pipes in wall; near a stove on the other side of the wall.
¾Do not locate in unusual cooling conditions, such as: on a wall separating an
unheated room; or in a draft from a stairwell, door, or window.
¾Do not locate in a damp area as this can lead to corrosion and shorten the
NT20e life.
¾Do not locate where air circulation is poor, such as: in a corner or alcove; or
behind an open door.
¾Do not install the unit until all construction work and painting has been
completed as this may damage the NT20e.
¾Do not mount anything directly below or above the NT20e. The wall should be
clear from the NT20e bottom to the floor and from the NT20e top to the
ceiling.

Rev 1.4 Page 3 of 14
¾This NT20e does not require leveling.
CAUTION
¾Turn off electricity to the heating/ cooling unit before installing or
servicing. Do not turn electricity back on until all work is completed.
¾Do not jumper wires together to test the system; this may cause harm
to your HVAC system and damage the NT20e voiding the warranty.
¾All wiring must conform to local codes and ordinances.
¾When pulling cable in the walls/floors/ceilings do not run CAT5 cable
next to HVAC cable. Space the cables a minimum one inch apart.
Removing the existing Thermostat
If you are removing an existing thermostat it is important to pay close attention to the
wiring in place and to label each connection as you remove it from the existing
thermostat. This will help in making the correct connections to the NT20e. Here are the
steps that will ensure a proper removal:
1. Follow these steps to ensure proper removal of the existing thermostat:
2. Turn off power at the HVAC system or the fuse/circuit breaker panel.
3. Remove the cover from the existing thermostat. If the cover does not snap off
when pulled firmly from the top or bottom, check for a screw or screws that
may be used to lock on the cover.
4. Label the wires one at a time placing the label about 1/2” away from the end
of the wire to allow stripping of the ends.
5. As you disconnect each wire, label it with the terminal designation from the
existing thermostat. Make sure the wires do not fall back inside the wall. If this
is a new installation the wire designations can be obtained from the HVAC
installer.
6. Once all wires are labeled, remove the existing thermostat from the wall.

Rev 1.4 Page 4 of 14
2. Mounting and wiring the NT20e
Mounting the NT20e Base Plate
The next set of steps illustrate how to mount the NT20 base plate assembly to your
wall. Please review all the steps carefully before performing any of the actions.
1. Separate the front from the back of the unit by depressing the bottom center
of the unit (at the model label e.g. “NT20e”).
2. Position the base plate for the best appearance. Ensure the position allows
you to access and pull the wires through the opening in the base plate.
3. Use a pencil to mark the center of the screw holes on the left side, right side
and bottom center of the base plate.
4. Remove the base plate and drill three 3/16" holes in the wall, if drywall, at the
locations you marked. For material such as plaster, drill 7/32" holes where
marked.
5. Gently tap the enclosed anchors unto the drilled holes until they are flush with
the wall.
6. Pull the wires through the base plate and position the base plate over the
screw holes.
7. Attach the base plate to the wall using the three enclosed 1" screws included
with the NT20e.
Wiring the Base Plate Terminals for 2-wire HVAC
Refer to the labels you placed on the wires you removed from the existing
thermostat in the previous steps.
1. Match the letter of your existing thermostat wire with the corresponding
terminal letter on the NT20e. Refer to Table 1 for terminal compatibility of
your system to the NT20e.
2. Strip insulation 3/8" (9.5mm) from wire ends. Take care not to damage labels
for each wire in handling and push excess wire back into wall so as not to
damage while installing. Ensure the ends remain straight.
3. Connect labeled wires only to a terminal post with the corresponding letter as
shown in Figure 1.
4. If needed, unscrew the terminal post screw which you will use to contact the
wires. Insert the wire straight down into the square hole and tighten the
corresponding screw down onto the wire.

Rev 1.4 Page 5 of 14
CAUTION
When unscrewing the terminal post screws only back out the screw until
you feel a slight stop or resistance. Do not back the screw out any further
or damage to the terminal block could result.
RH RC C G H W2 W1 Y2 Y1 S1+ S1- S1 S2+ S2- S2 1 2 3 4 5 6
HVAC System
Heat
Control
Cool &
Heat
Power
RH W
wire
Square
hole
Base Plate
Terminal Block
Figure 1 Connections for 2-wire HVAC
Wiring the Base Plate Terminals for 4-wire HVAC
Follow the same instructions as the 2-wire HVAC and make the connections as shown
in Figure 2.
HVAC System
Heat
Control
Fan
Control
Cool
Control
Cool &
Heat
Power
RH RC C G H W2 W1 Y2 Y1 S1+ S1- S1 S2+ S2- S2 1 2 3 4 5 6
RH G W Y
Figure 2 Connections for 4-wire HVAC
The following conversion chart lists the standard HVAC terminal labels and the Proliphix
corresponding label.

Rev 1.4 Page 6 of 14
Standard
Terminal
Designations
Proliphix
Terminal
Designations
Description
R, RH RH
24VAC for W1 if RC used or all
HVAC contacts if RC not used
(see Table 3)
RC RC
24VAC for Y1, G if available (see
Table 3)
C C (not used)
W, W1 W1 Heat Relay
W2 W2 (Not used)
Y, Y1 Y1 Cool Relay
Y2 Y2 (Not used)
G G Fan Relay
- H (Not used)
Table 1 Terminal Conversion Chart
CAT5 Wiring for Ethernet Network
The inside label on the Base Plate provides several color coded wiring schemes for
Ethernet CAT5 connections. Match the label number to the Terminal block number for
CAT5 color coding as shown in Figure 3. If the other end of the CAT5 cable is
connected to a Proliphix EPA-60 Ethernet Power Adapter, follow the color coding for
T568A on the label.
Terminal
block
number
CAT5 T568A color code
1 White-Blue and Blue ends stripped and
twisted
2 White-Brown and Brown ends stripped and
twisted
3 White-Green
4 Green
5 White-Orange
6 Orange
Table 2 Ethernet CAT5 Wiring

Rev 1.4 Page 7 of 14
Figure 3 Ethernet CAT5 Wiring
Mounting the NT20e
Remove the NT20e from the electro-static bag. Before mounting the NT20e verify the
NT20e jumpers are configured or your application. The NT20e contains jumpers to
configure the HVAC power settings. Table 3 shows the possible HVAC power
configurations. Most applications use only RH power. The NT20e is shipped with the
‘RH Only’ configuration.
The HVAC power configuration determines which HVAC power source RH or RC is
switched to turn on the different HVAC systems (cool, heat and fan). The NT20e does
not take power from the HVAC interface.
Figure 4 shows the location of the jumpers on the NT20e circuit module. Note that J2
has two possible positions. Figure 4 shows J2 in POS1 position. Justify the jumper
downward for POS2 position.
Mount the NT20e into the wall plate by inserting the top two hinges into the
corresponding receptacle holes in the top of the base plate. Snap the bottom of the
NT20e securely into the base plate.

Rev 1.4 Page 8 of 14
HVAC Power Configuration J2 J1
RH Only (default) POS1 IN
RC Only POS1 IN
RH and RC with fan powered by RH POS1 OUT
RH and RC with fan powered by RC POS2 OUT
Note: J3 is always installed
Table 3 HVAC Power Configuration
Figure 4 NT20e Jumper locations

Rev 1.4 Page 9 of 14
3. Verifying Operation
Verifying Heat, Cool and Fan controls
To test Heat, perform the following:
1. Verify the HVAC system power is on.
2. Press the middle button labeled ‘HVAC’.
3. Press the middle button labeled ‘Mode’. A menu list will appear.
4. Use the ‘up’ and ‘down’ arrow buttons on the right side to select ‘Heat’.
5. Press the middle button labeled ‘Select’.
6. Press the right button labeled ‘Back’.
7. Press the ‘up’ arrow button until the heat set point is higher than the temperature
reading. The heat relay should click and the HVAC system should activate the
heat.
To test Cool, perform the following:
1. Verify the HVAC system power is on.
2. Press the middle button labeled ‘HVAC’.
3. Press the middle button labeled ‘Mode’. A menu list will appear.
4. Use the ‘up’ and ‘down’ arrow buttons on the right side to select ‘Cool’.
5. Press the middle button labeled ‘Select’.
6. Press the right button labeled ‘Back’.
7. Press the ‘down’ arrow button until the cool set point is lower than the
temperature reading. The cool and fan relays should click and the HVAC system
should activate the cool and fan.
To test the fan separately, perform the following:
1. Verify the HVAC system power is on.
2. Press the middle button labeled ‘HVAC’.
3. Press the middle button labeled ‘Fan’. A menu list will appear.
4. Use the ‘up’ and ‘down’ arrow buttons on the right side to select ‘On’.
5. Press the left button labeled ‘Select’. The fan relay should click and the fan
should be on.

Rev 1.4 Page 10 of 14
Troubleshooting
Condition Possible Cause
LCD display is blank Check EPA wiring. Refer to EPA-60 install guide.
Is power applied to EPA-60? Refer to EPA install
guide
Check NT20e base plate wiring.
LCD display is active but no
network link indication.
Check NT20e base plate wiring.
Check EPA-60 wiring.
Is EPA-60 patched to a switch or router?
HVAC heat does not activate
when tested
Verify you increased the heat set point higher than
the temperature reading and the NT20e is in heat
mode.
Check NT20e wiring.
Verify the HVAC system is powered.
HVAC cool does not activate
when tested
Verify you decreased the cool set point lower than
the temperature reading and the NT20e is in cool
mode.
Check NT20e wiring.
Verify the HVAC system is powered.
HVAC fan does not activate
when tested
Check NT20e wiring.
Verify the HVAC system is powered.

Rev 1.4 Page 11 of 14
4. Customer Assistance
When contacting Proliphix for technical assistance, please have the following
information available:
¾NT20e model and serial number.
¾Type of heating/cooling system (example: gas, oil, or electric; warm air, hot
water, heat pump, steam or gravity)
¾Location and number of wires attached to NT20e
For additional assistance, please contact Proliphix Technical Support using the
following:
How to reach us:
Web: www.proliphix.com
Email: [email protected]
Telephone: 1-866-IPLIVING
Fax: [phone]
Hours of service:
8:00 AM to 8:00 PM Eastern Standard Time Monday to Friday.
Extended 7/24 contracts available.
Warranty Information
Proliphix, Inc. warrants its products to be free from manufacturing defects in materials
and workmanship under normal use for a period of 90 days from the date of purchase
from Proliphix.
Proliphix shall not be liable to honor the terms of this warranty if the product has been
used in any other application other than that for which it was intended, or if it has been
subjected to misuse, accidental damage, modification, or improper installation
procedures. Furthermore, this warranty covers only products which have all original
and unaltered markings and labels (serial numbers, model numbers, etc.) of
manufacture.
This warranty shall be the sole and exclusive remedy to the original purchaser. In no
event will Proliphix be liable for incidental or consequential damages (including property
and economic) of any kind arising from the sale and use of this equipment. Proliphix is
not liable for any claim made by a third party or made by a purchaser for a third party.
Proliphix, shall, at its option, repair or replace any product found defective, without
charge for parts and labor. Repaired or replaced equipment or parts supplied under this
warranty shall be covered only by the unexpired period of the warranty.

Rev 1.4 Page 12 of 14
In no event shall Proliphix’s liability exceed the price paid for the product from direct,
indirect, special, incidental, or consequential damages resulting from the use of the
product, it's accompanying software, or its documentation. Proliphix offers no refunds
for its products.
Except as expressly set forth in this warranty, Proliphix makes no other warranties,
expressed or implied, nor authorizes any other party to offer any warranty, including any
implied warranties of merchantability or fitness for a particular purpose. Any implied
warranties that may be imposed by law are limited by the terms of this limited warranty.
This warranty statement supersedes all previous warranties.
This warranty extends to products purchased directly from Proliphix or an authorized
Proliphix dealer, distributor or reseller.
Material Return Procedure
No merchandise may be returned for credit, exchange, or service without prior
authorization from Proliphix. To obtain warranty service for Proliphix products, contact
Proliphix Customer Service (1-866-IP-LIVING) and request a Return Material
Authorization (RMA) number.
Products may be returned for credit, exchange, or service with a Proliphix RMA number.
Enclose a note explaining the symptoms of the problem, stating the RMA number, and
the name, address and phone number of the company or individual contact.
Authorized returns must be shipped prepaid to Proliphix at;
Proliphix, Inc.
66 Tadmuck Road
Suite #1
Westford, MA 01886
The RMA number must be clearly marked on the outside of the package. Products
received without an RMA number or without shipping prepaid will be subject to refusal
by Proliphix. Proliphix reserves the right to charge a 15% restocking fee, plus shipping
costs on any products returned with an RMA.
Return shipping charges following repair of items under warranty shall be paid by
Proliphix via standard ground carrier. In the event that repairs are found to be non-
warranty, return shipping charges will be paid by the purchaser. MA 01886
MA 01886

Rev 1.4 Page 13 of 14
NOTES:

Rev 1.4 Page 14 of 14
NOTES:
Contents of this document are subject to
change without notice.