Cypress Envirosystems WPT-810-RPT User manual

RPT Installation Manual
Doc No. 910-00027-01 Rev 01
Page 1 of 12
1. Overview
The Cypress Envirosystems Wireless Pneumatic Thermostat (WPT) retrofits an existing
pneumatic thermostat to provide Direct Digital Control (DDC) like zone control
functionality at a fraction of the time and cost without disturbing occupants.
The WPT enables remote monitoring of zone temperature, branch pressure, remote
control of setpoints, and programmable setback or setup of the pneumatic HVAC
systems. It also enables integration with utility Demand Response programs.
The Wireless Pneumatic Thermostat repeater (RPT) is one of the components of WPT
wireless network. The RPT is used to extend the wireless range of the WPT network by
allowing more WPTs to be connected in each wireless network. When the WPT USB
Hub (HUSB) is located out of RF range of the WPT, multiple RPTs can be used to extend
the range. For more details, refer to WPT Wireless Network Planning Guide.
1.1. Components
The WPT-810-RPT kit includes the following components:
•Wireless repeater
•Universal wall bracket
•Mounting screws, #6 x 1” self-tapping (x2)
1.2. Prerequisites for Installation
The WPT system relies on a wireless network for communication. The following tasks
must be completed before proceeding to RPT installation:
•Wireless survey performed using the WPT-800-RKIT
•Installation of the WPT Green Box
•Installation of the HUSB
•Assignment of network IDs and RPT IDs
•Assignment of RPT locations
•Run low voltage power to the RPT location
Manuals for the WPT, WPT Green Box, HUSB and other manuals related to the WPT
system can be found at http://www.cypressenvirosystems.com.
1.3. Tools Required for Installation
•Phillips-head screw driver
•1/16” hex Allen wrench

RPT Installation Manual
Doc No. 910-00027-01 Rev 01
Page 2 of 12
2. RPT Basics
2.1. Turning on the RPT
Connect a low voltage power supply (not included) to the 2-position connector inside the
RPT. There is a connector for 12-24VAC power and another connector for 5-40VDC
power. The AC connector is non-polarity sensitive. The DC connector is polarity
sensitive. Simply insert the wire into the connector and gently tug to verify the wire is
secure. To release the wire, press the button above the wire receptacle and pull the wire
out.
NOTE: ONLY CONNECT POWER TO ONE CONNECTOR. DO NOT APPLY POWER
TO BOTH CONNECTORS AT THE SAME TIME.
The RPT will turn on and perform initialization. During initialization and every time the
RPT starts a discovery process, a “dy” symbol is displayed on the LCD for a few seconds.
During this period the RPT is attempting to discover its nearest RPTs and HUSB. This
process should not be disturbed. The operator must wait for the “dy” to disappear from
the LCD before commencing any operation.
After initialization, the LCD displays either the RPT ID or “E0” if a network is not found.
E0 is acceptable in this case until the network is fully configured.
2.2. RPT Display
The various indicators and characters displayed on the LCD are shown in Figure 1. The
LCD display is normally concealed by a front cover. The cover must be removed to gain
access to the display and buttons.
Figure 1. RPT LCD Display
2.3. RPT Menu
2.3.1. Diagnostic Menu
Diagnostic Menu allows the installer to initiate a discovery process, view the firmware
version number, and path information. Refer to Figure 2 for the menu structure.

RPT Installation Manual
Doc No. 910-00027-01 Rev 01
Page 3 of 12
2.3.2. Programming Menu
Programming Menu allows the installer to configure the network and RPT ID. Refer to
Figure 2 for the menu structure.

RPT Installation Manual
Doc No. 910-00027-01 Rev 01
Page 4 of 12
Figure 2. RPT Menu Structure

RPT Installation Manual
Doc No. 910-00027-01 Rev 01
Page 5 of 12
3. RPT Installation
The overall RPT installation procedure includes:
•Wire runs
•Mounting the RPT
•Configuring the RPT
ESD Handling Precautions
Warning!
•The RPT contains ESD sensitive circuit cards and components, shown in Figure 3.
•Great care must be exercised while handling RPT with the cover open.
•Do not touch any of the circuit boards with fingers or any part of the body.
•Touching the circuit boards may cause the unit to fail due to electrostatic
discharge.
•Hold and handle the unit using the external bottom plastic cover as the support.
Figure 3. Handling the RPT
Do Not
Touch
Captive
Screws

RPT Installation Manual
Doc No. 910-00027-01 Rev 01
Page 6 of 12
3.1. Wire runs
Cabling used to supply power should be a jacketed Class-2 type with a 20AWG minimum.
Refer to Table 1 for recommended wire gauges based on cable lengths.
Wire Length
AWG
Up to 50’ 20
50’ to 200’ 18
over 200’ 16
Table 1. Recommended Wire Gauges
For multi-drop systems when more than 3 repeaters are connected to the same 24VAC
supply, it is recommended that 18AWG or larger be used. As a rule of thumb, the supply
transformer should be increased by 5VA for each 24VAC RPT on a multi-drop system.
Insure all wiring meets the NEC Article 300, Section 725.3 for Class-2 and wiring. For
wiring in ducts, plenums, and other spaces related to the air handler, NEC 300.22 should
be followed. Type CL2P cabling should be used were appropriate.
Additionally, DC power may be supplied using an AC/DC wall wart (Cypress
Envirosystems part number: WPT-810-DCPS). This part plugs into a standard 120VAC
outlet and supplies 5VDC for the RPT.
3.2. Mounting the RPT
1. Mount the universal wall bracket, shown in Figure 4, using the two screws provided.
It is recommended to install the mounting bracket over the low voltage power wires,
running the wires through the bottom center hole of the mounting bracket.
Figure 4. Universal Wall Bracket

RPT Installation Manual
Doc No. 910-00027-01 Rev 01
Page 7 of 12
2. Mount the RPT on the universal wall bracket using the captive screws. It is
recommended to run the low voltage power wires through the large hole in the center
of the repeater base plate. The wire should be strain relieved to prevent stress or
fatiguing at the terminal strip connection points. See Figure 5 below.
Figure 5. Internal Cable Routing Recommendation
Route cable
service loop
to provide
strain relief
Non polarity
sensitive AC
connector
P
olarity
sensitive DC
connector

RPT Installation Manual
Doc No. 910-00027-01 Rev 01
Page 8 of 12
Figure 6. Wall Bracket Cable Routing Recommendation
3. Connect the low voltage power wiring to the appropriate push-connector inside the
repeater. The AC connector is non-polarity sensitive. The DC connector is polarity
sensitive.
NOTE: ONLY ONE POWER SOURCE (AC OR DC) SHOULD BE WIRED. DO NOT
WIRE BOTH CONNECTORS. To release the wire from the connector, press the
button right above the wire receptacle and pull the wire out.
4. Close the top cover.
3.3. Configuring the RPT
The RPT must be configured with a valid network ID and RPT ID in order to be functional
in a WPT network.
Note: The RPT has a blank front cover to prevent accidental changes to the
configuration settings. The front cover must be removed to gain access to
the display and buttons.
Note: The network ID is a single digit number, and cannot have a “0” value.
Note: The RPT ID is a two digit number, “D2 D1” (see Figure 7). Acceptable
values for D2 are 1 to 9 and the letter A. Acceptable values for D1 are 1 to 9
and the letters A to E.
D2 D1
Figure 7. RPT ID Digits
To configure the network ID and the RPT ID, perform the following:
1. Press and release all three buttons simultaneously to enter the Programming
Menu. The RPT will display the current or default network ID and the first digit
starts flashing (see Figure 8).
The °F icon is displayed, indicating that the network ID is being programmed.
Press and release all three buttons
simultaneously to enter the
Programming Menu
Digit will flash when configuring the
Network ID
Figure 8. Configuring the Network ID
2. Press the top or bottom button to change the network ID to the required value.

RPT Installation Manual
Doc No. 910-00027-01 Rev 01
Page 9 of 12
The network ID cannot have a “0” value.
3. Press the middle button to confirm the network ID. This completes the
programming of the network ID and the LCD display starts flashing the first digit,
D1, of the RPT ID.
The °C icon is displayed, indicating that the RPT ID is being programmed.
Configuring RPT ID D1 Configuring RPT ID D2
Figure 9. Configuring RPT ID
4. Press the top or bottom button to change D1 to the required value.
RPT ID D1 cannot have an “F” value.
5. Press middle button to confirm D1.
The first digit stops flashing and the second digit starts flashing.
6. Repeat steps 4 and 5 to configure D2 of the RPT ID.
While the RPT ID is being configured, the corresponding bar of the battery
indicator also flashes (see Figure 9).
7. After D2 is configured and confirmed, RPT will exit the Programming Menu and
return back to the Home Screen.
The RPT will automatically exit the Programming Menu if no key is pressed for
75 seconds.
Anytime the network or RPT ID change, a discovery process is initiated. A “dy”
symbol is displayed on the LCD for a few seconds. The operator must wait for
the “dy” to disappear from the LCD before commencing any operation.
8. After programming the RPT, replace the front cover.
The network and RPT IDs can be changed any time by following the steps above. When
the RPT is working normally, the current RPT ID will be displayed.

RPT Installation Manual
Doc No. 910-00027-01 Rev 01
Page 10 of 12
4. Troubleshooting
The RPT is designed with the following diagnostic functions to detect and diagnose faults.
Code
Reason
Solution
dy
Discovery Status:
This code indicates that the RPT is
performing a discovery operation
and it should not be disturbed.
•This display goes off automatically after a few
seconds.
E0
Discovery Error:
Not able to connect to the nearest
RPT or HUSB.
•Perform Force Discovery to retry (see Figure 2).
•Verify the Network ID has been properly
configured in the RPT.
•Verify the HUSB is connected and working
properly.
•If the error persists, the RPT must be relocated.
If this is not feasible, an additional RPT must be
installed.
E1
Time Synchronization Error:
Not able to synchronize the RPT
time with the wireless network.
•This error code will flash on and off the LCD
while the RPT attempts to correct the problem.
Do not disturb the RPT during this process.
•The RPT automatically recovers from this error
after a few refresh cycles.
E2 Radio Error:
Not able to send/receive data.
•If the error persists, contact the original
distributor for replacement.
E3
Ping Error:
Not able to locate a free RF channel
to use due to an excess number of
nearby RPTs or RF interference.
•This error code will flash on and off the LCD
while the RPT attempts to correct the problem.
Do not disturb the RPT during this process.
•The RPT automatically recovers from this error
after a few refresh cycles.
E4
Wireless Communication Error:
Not able to reliability communication
with the nearest HUSB or RPT.
•The RPT will attempt to automatically recover
from this error after a few refresh cycles.
•If the error persists, the RPT must be relocated.
If this is not feasible, an additional RPT must be
installed.
E5
Signal Quality Error:
Not able to discovery a reliable path
to the HUSB. All available paths
have either a weak RF signal or
excessive hops.
•Perform Force Discovery to retry (see Figure 2).
•If the error persists, the RPT must be relocated.
If this is not feasible, an additional RPT must be
installed.