Honeywell e528 Product Manual
E528 Smart Digital Thermostat Product Guide
Table of Contents
E528 Product Guide
Table of Contents .............................................. Page 1
Overview and General Concept ......................... Page 2
Application ......................................................... Page 2
Wireless Communication ................................... Page 4
Installation Requirements .................................. Page 4
Mounting ............................................................ Page 5
Input/Output ....................................................... Page 6
E528.4G New Installation .................................. Page 8
Wiring ................................................................ Page 10
Load Specifications ........................................... Page 13
FCC Information ................................................ Page 13
Technical Specifications .................................... Page 14
Document Revision History ............................... Page 15
Rev 8.0 12/16/2016 1
E528 Product Guide
Figure 1. E528 Digital Thermostat
Overview and
General Concepts
INNCOM's e4 Smart Digital Thermostat is a powerful, multi-purpose Direct
Digital Control (DDC) device that can control virtually any HVAC system found
in hotel guestrooms.
The three e4 models meet different application requirements. The e528 and
e527 are wired and are typically used for new installation. The e529 is batterypowered and is designed to meet the needs of existing properties where
rewiring is not practicable.
This document describes Model e528; information on the e529 and e527 can
be found in their respective product guides.
Application
In its most basic form, the e528 functions as a programmable DDC thermostat,
automatically adjusting fan speeds and valves to achieve set temperature
(Note: Guests can manually select heat or cool by pressing the OFF/AUTO
button and cycling through OFF, AUTO, HEAT and COOL). The e528 is also
an “intelligent” device capable of linking ancillary sensors and serving as an
information gateway. For example, coupled with a magnetic door switch (wired
or wireless), motion detectors, and other devices, the e528 becomes the brain
of a highly effective Energy Management System (EMS) application,
communicating EMS information requirements to central servers. It comes
standard with five relays and can be equipped with an on-board Infrared (IR) or
radio frequency (RF) transceiver and Passive Infrared (PIR) motion detector.
The e528 interfaces with all common HVAC unit voltage configurations (24 volt
to 277 volt). The e528 can be installed in a wired or wireless INNCOM
guestroom control system, which makes installation feasible and affordable in
either new construction or retrofit installations.
Through interfaces with other devices and sensors, the e528 supports the
following functions:
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E528 Product Guide
Figure 2. E528 Graphic Interface
Remote HVAC control
• Guestroom HVAC diagnostics
• Remote room occupancy indication
• Automatic lighting control
• Remote mini-bar access reporting
• Remote smoke detector annunciation
• Central Electronic Lock control
• Humidity control
• Remote drape control
• Outside temperature display
• Peak demand load shedding
• Property/Building Management System (PMS/BMS) interface
A centrally controlled EMS package is created when the e528 is connected to
the property's Central Interface Network (CINET) with a pair of low voltage
wires or by the property’s high-speed TCP/IP network with the addition of a
TCT (an Ethernet gateway device). RF networking is possible with radio
equipped models.
The e528 features a guest-friendly graphic interface with intuitive controls
(Figure 2). A user guide for the e528, written primarily for installers and facility
management personnel, is available (see References below).
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E528 Product Guide
Figure 3. PIR
Wireless Communication
2.4HHz Wireless RF
Table 1 e528 RF Characteristics
Performance 0dB 20dB
RF Data Rate 250kbps 250kbps
Antenna Type SMT SMT
Indoor Range 70ft 100ft+
Outdoor/RF line-of-site range 540ft 1000ft+
Transmit Power 1mW 10mW
Receive Sensitivity -94.6dBm -94.6dBm
Frequency Band 2.4GHz 2.4GHz
Encryption AES-128 AES-128
Protocol 802.15.4 802.15.4
Frequency Channels 11-26 11-26
Installation Requirements
Location: The e528 must be located on a partitioning interior wall,
approximately 1.5 m (5 ft) above the floor, in a site of average
temperature. It is important to ensure that the thermostat is located away
from direct sunlight or radiant heat, air discharge grills, stairwells, outside
doors, steam or water pipes, warm air stacks, unheated/uncooled areas,
or sources of electrical or radio interference. The unit should not be
placed on an outside wall or behind a door. It is essential that the e4 is
mounted flush to the wall and mounted level in both the horizontal and
vertical planes; incorrect mounting can degrade IR, PIR, and
temperature measurement performance.
Installation Requirements for e4
equipped with PIR Motion Detection
The e4 thermostat can be equipped with a PIR
detector to augment the energy management
scheme by detecting motion in the guestroom.
Consider the PIR’s view angle, range
characteristics, and mounting position to ensure
proper coverage. Figure 3 below shows the ranges
of the flat and standard PIRs.
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Detection Ranges
E528 Product Guide
Figure 4 Mounting Assembly
Mounting Box Back Mounting Plate Back Plate Insulator
Mounting
The e528 is usually mounted on a standard double-gang (4 x 4) junction box. If
mounted on a single-gang box, the left side (display side) of the e528 overlaps
the wall area to the left of the junction box. A low-voltage mounting plate, mud
ring, or low-voltage caddy may be used for mounting 24 volt applications.
To mount the e528:
1. Remove the two small screws at the base of the e528.
2. Pull the bottom of the back-mounting plate slightly away from the front
housing and then pull the back-mounting plate down.
3. Position the back plate insulator within the mounting plate as shown i
F
igure 4.
4. Attach the mounting plate to the junction box, using the mounting screws
provided with the e528. Ensure that the plate is mounted with the rais
arrow pointing UP.
n
ed
To simplify installing and removing the e528, the headers and sockets
described below and shown in Figure 5 are located on the back of the
e528. These accept pre-made wiring harnesses provided by INNCOM.
(Note: Take care to note which e528 model is being used. Each model
has slightly changed headers and connectors as identified in the
drawings on the next page.)
Rev 8.0 12/16/2016 5
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