Catalog No: 5000.61B
Effective: 04-15-05
Replaces: 09-01-02
INSTALLATION AND OPERATING
INSTRUCTIONS
RayTemp™ Hot Water
Energy Management Control
P/N 241098
Section 1. GETTING STARTED
THE BIG PICTURE
This RayTemp control is designed
to make recirculating domestic
hot water heating systems energy
efficient. In a recirculating sys-
tem, hot water is continuously
pumped throughout the building.
This large loop has many branch-
es which extend to fixtures in the
rooms. It is essentially a giant
radiator which has tremendous
heat loss. By lowering the tem-
perature of this loop it is possible
to dramatically reduce this heat
loss. The trick is knowing when to
lower the temperature without
running out of hot water. With
RayTemp, water temperatures are
automatically scheduled in antici-
pation of demand. So for the
Fig # 8285.1
peak demand in the morning, the water is preheated to a higher temperature. The control does
this automatically by recording a seven day profile of demand, and then it uses this information to
establish setpoints. The control continually adjusts this setpoint to meet demand, always main-
taining the lowest temperature which will fully meet user needs. This operation dramatically
lessens costly heat loss, lime deposits, and increases the life of the system. The control is prepro-
grammed with typical settings, making installation very simple. However, the program values can
be adjusted to accommodate many types of water heating systems. Output control is provided for
up to 4 stages of heat or four heaters. Two standard temperature sensors are connected to the
water heating systems at locations called “Supply”and “Return”.
Hot Water Use Throughout the Day
3
WHAT COMES WITH THE CONTROL
Before arriving at the job site to begin the installation, it’s important to first inspect the system and
determine what materials you will need. Some parts are included with the control while the oth-
ers you will need to provide. Check the following list to verify that you received the following
parts.
Included in the box
1 Control, 10.5” x 8” x 3.5”
1 Panel Cover, Metal, 4” x 7.5”
4 Mounting Screws, 3/ 4”
4 Cable Ties,15”, black, -40ºF to 221ºF rated
2 Knockout Connectors, 1/ 2” to romex
1 Warranty Card
2 Temperature Sensors, Copper housing,10 K 1 Manual
Ohm at 25°C 1 24v Grounded Transformer
Other parts you will need
Cable, twisted pair with shield, stranded, 18
AWG. Belden type 8208 (braid shield) or 9552
(2 twisted pairs, foil shield)
Cable Ties
Wire Nuts
Thermal Insulation Tape
Heat Conducting Paste
Section 2. INSTALLING THE CONTROL
The control should be mounted on a wall, preferably at eye level with AC power as close as pos-
sible. Consider the length of cable required for routing along walls, along pipes, and for connect-
ing the temperature sensors.
Notice on the bottom of the control that two of the five knockouts have been removed for rout-
ing of cables. If you want to use one or more of the other knockouts, these should be removed
before mounting the control onto the wall.
ATTACHING THE TEMPERATURE SENSORS
To get an accurate reading of the water temperatures, the sensors must be in good thermal con-
tact with the pipe. Follow this procedure when connecting the temperature sensors.
Procedure for Connecting Temperature Sensors to Pipes:
1. Remove any existing insulation.
2. Clean the pipe surface using sandpaper.
3. Apply thermal conducting paste to the pipe surface.
4. Fasten the sensor tightly to the pipe using the black cable tie.
5. Attach 18 AWG shielded cable to the 6 in. leads using wire nuts or electrical tape.
6. Fasten the cable to the pipe using a second black cable tie.
7. Replace the existing insulation or wrap thermal insulation tape around the pipe.
Overlap each turn and DO NOT STRETCH the tape.
4
On the sensor end, roll the shielding and tape so it will not contact a conductor. On the control
end, the shield should be grounded. Do not ground both ends of the shielding.
Avoid routing wiring on or near other electrical wires, conduit, motors, spark igniters or other
sources of high, intermittent voltage or current. EMI (spikes) can disrupt information flow and
retention.
Procedure for Installing Supply Sensor in Tank:
1. Install sensor into dry well utilizing thermal conductive paste.
2. Install dry well into tank stat opening.
PROVIDING 24 VAC POWER TO THE CONTROL
!!! CAUTION !!!
DO NOT connect 120 VAC
to the RayTemp!!!
!!! CAUTION !!!
DO NOT connect power until
all wiring is complete
and checked.
Resulting damage will
void your warranty.
The RayTemp requires an external power transformer connected at terminals one and two.
Complete and check all wiring before connecting this transformer. The transformer must be rated
for 24 VAC at 16 VA or higher. When 24 VAC power is applied to the control the LCD display will
be blank for a few seconds. During this time the RayTemp is configuring any modem that may be
connected. After this the opening screen appears which identifies the model number, type of con-
trol, software version, and copyright notice.
Sensor Connections
5
INSTALLATION LAYOUT
Fig # 8285.2
6
”DIP” SWITCH SETTINGS ON CIRCUIT BOARD
CAUTION: Incorrect DIP switch settings may damage the RayTemp!!!
Make all adjustments with ALL power off.
The four relay outputs are factory set for normally closed dry contacts. These DIP switches are
located behind the terminal block, on the right side. The black dots in the diagram indicate where
to set the 20 switches for normally closed dry contacts. As shown, all four outputs will be the
same. Relay #1 is set on SW1 positions 6 thru 10. Relay #2 is set on SW1 positions 1 thru 5. Relay
#3 is set on SW2 positions 6 thru 10. Relay #4 is set on SW2 positions 1 thru 5.
These switches are factory set and should not need adjustment.
DIP Switch Setting on Circuit Board
The RayTemp can control up to 4 stages:
• Four single-stage heaters
• Two two-stage heaters
• One four-stage heater
Stage Connections on Heater
Remove factory jumpers for 3- and 4-stage connections.
7
CONNECTING THE OPTIONAL “ELSA” BRAND MODEM
Raypak recommends the ELSA Microlink 56k modem for data communication. This modem will
work with RayTemp and technical support will be provided if this modem is installed with the cor-
rect cables. Raypak will not be able to provide support if you use other modem brands or build
your own cables. In either case we strongly recommend that you test the RayTemp/ modem con-
nection in your office before installing the system. If possible, plan ahead, and have the phone
line/ jack installed about two feet from the heater. Secure the ELSA modem and connect the phone
cable (that comes with the modem) from the wall jack to the ELSA modem jack labeled “Line”.
Connect the RayTemp cable 5-423 from the modem’s 8-pin connector to the RayTemp’s “Serial
to RJ11” adapter then connect the six-line data cable from the adapter to the RayTemp’s six-pin
“RJ11” port (see figure below). Plug in the modem’s power transformer and turn on the power
switch. Testing is covered in the next chapter.
RayTemp
RJ11 to 9-pin
Connector
MODEM
Active Phone Line
From Wall
CAUTION!
DO NOT connect a live phone line directly to the RayTemp control.
Doing so will damage the internal communication circuit!
8
USING THE FRONT PANEL TO CHECK SENSORS AND RELAYS
The RayTemp front panel features an alphanumeric LCD display of four rows by 20 lines. Six keys
are provided to select screens, fields, and make program changes. The up-arrow and down-arrow
"WINDOW" keys are used to step thru each of the screens. The down-arrow screen selects the
next screen while the up-arrow key selects the previous screen. The left-arrow and right-arrow
"FIELD" keys move a flashing cursor to select different sections within a screen. The plus and
minus "VALUE" keys are used to make changes to a selected field or numeric value. Plus
increases the selected number or selects the next option. Minus decreases the selected number or
selects the previous option.
Using the down-“WINDOW” key select the “SENSORS”
screen and verify that each temperature sensor is measur-
SE-Sensors
Supply
Desired
Return
136.4
135.0
128.2
ing the correct value. It’s best to use a reliable temperature
reading device, like a surface thermocouple or a digital
infrared thermometer. Thermostats and mercury ther-
mometers are frequently inaccurate. If the readings dis-
agree by more than two degrees there may be a problem with how the sensor is attached. Also
check for correct wiring at the terminal block.
Next select the “RELAY STATUS” screen and manually
verify that you can turn each water heater or stage on and
off. You do this using the field and value keys. If the heater
does not turn on it may be necessary to increase the
optional secondary mechanical aquastat setting a few
degrees. Use a multimeter to troubleshoot if problems per-
RT-Relay Status
#1
#2
#3
#4
ON OFF OFF OFF
sist. Return to the second screen titled “Master On/ Off Mode” and put the control in “Bypass”.
The water heaters will now run using the optional secondary mechanical aquastats until program-
ming of the control has been completed, explained in the next chapter.
9
Section 3. CONNECTING A COMPUTER
This section explains how to connect your personal computer to the RayTemp. Once connected,
you can view all of the front panel screens covered in the previous section. You can also retrieve
the recorded data and view color graphs of temperature and demand profiles. "PTT" is the option-
al software tool for your personal computers that works with RayTemp controls. It simulates the
front panel and retrieves logged data. PTT software and interface cables are available directly from
Raypak. The computer must be able to accept a serial (RS-232) cable.
BUILDING OR BUYING INTERFACE CABLES
The following cables are available from Raypak:
Description
Part #
PTT Software
Communication for Windows PC to 70 series control
PTT
Direct Connect Communication Cable
Connects a 70 series control to a PC
5-424
5-423
Modem Communication Cable
Connects a 70 series control to a modem
Wiring pin assignments are provided below for building your own cables.
CAUTION! Never plug a telephone line into the RJ-11 connector! The control may be damaged.
RayTemp to PC/ Modem Pin Assignments
RJ-11 Pin
(RayTemp)
DB-9 Pin
(PC/ Modem)
RJ-11 Wire color codes:
White = 1
Ground
Program
Receive
Transmit
6
2
5
4
5
4
3
2
Ground
Program
Transmit
Receive
Black = 2
Red = 3
Green = 4
Yellow = 5
Blue = 6
RayTemp to Modem Pin Assignments
RJ-11 Wire color codes:
White = 1
RJ-11 Pin
(RayTemp)
DB-25 Pin
(Modem)
Black = 2
Red = 3
Green = 4
Yellow = 5
Blue = 6
Ground
Receive
Transmit
6
5
4
7
3
2
Ground
Transmit
Receive
10
INSTALLING PTT SOFTWARE ON YOUR PC
This section provides instructions for installing PTT communication software. First insert the PTT
CD into your CD drive. Double click on the folder Ptt258 then double click on Install. The PTT
communication software will then be installed on your C:\ GBX subdirectory. To run PTT, type PTT
(then press enter) from the C:\ GBX subdirectory. Within a few seconds the main menu, software
version I.D., and copyright notice will appear. Use the arrow keys and enter key to select items
from the menu bar at the top of the screen. First check the default options by selecting the
“Options” menu item. There are several items that can be changed. Most PC’s have several com-
munication ports. Port 1 is usually for direct connections and port 2 is usually used for internet
modems. The second option sets the communication speed. The default speed for RayTemp is
9600 Baud. Next is the print quality, 1 = draft mode (fast), 2 = medium, 3 = high resolution (but
slow). Press Ctrl-Enter to save your selection.
SIMULATED FRONT PANEL DISPLAY
This “Laptop” selection from the menu bar opens up a window on the PC screen to receive for-
matted data and program information sent by a RayTemp control, connected at the serial (RS232)
port. From the main menu select "LapTop" and press enter. Connect the cable to the
RayTemp control and press F1 to begin communication. The screen and keyboard will operate
similar to the front panel but with enhanced features to take advantage of the larger screen. This
table shows the function keys for accessing all RayTemp display and programming features.
These keys apply to both the PC and LapTop display, except as noted. A screen saver clears the
display after five minutes. Press F1 thru F5 to restore the screen.
Key
F1
Action
Press two keys for direct access to any screen
Select next screen
F2
F3
Select previous screen
F4
Increase program value
Decrease program value
Select next field in a screen
Select previous field in a screen
F5
SPACE
BACK
SPACE
F6
Activate full-screen viewing (PC)
Restore LapTop window (PC)
SHIFT
F6
11
READING LOGGED DATA
Under the "History Report" menu item, logged data can be retrieved from a RayTemp control,
saved to a disk file, viewed graphically on screen, or output to a printer. To retrieve history, con-
nect the RayTemp serial cable between the RayTemp and your laptop PC. Then select "Retrieve".
The RayTemp will transmit logged data to your PC. This takes about one minute at 9600 Baud. A
status window will be present while the data is being received. The logged data consists of a
report, seven detailed daily graphs (Monday thru Sunday), and twelve monthly graphs (January
thru December). A menu will appear from which you can view any of these graphs. This data will
be automatically saved to a disk file, based on the file name in the report data. PTT creates a
unique name for each file by setting the last position of the file name prefix. The codes are 0 thru
9 and then A thru Z. For examples REDLION.GIX will be saved as REDLION0.GIX, REDLION1.GIX,
REDLION2.GIX, etc.
To view an existing history file select "Display", and select a file by pressing enter. After the
graphs are prepared, a window will appear from which you can select any daily graph or
monthly graph to view on the screen.
The "Print" option under "History Report" allows you to send site reports and graphs to any sup-
ported printer. When this item is selected a directory of data files will appear. Point to a file using
the arrow keys then press enter to select the file. A check mark will appear. Place check marks next
to all data file you wish printed, then press Ctrl-Enter to continue. A second screen will appear for
selecting graphs within a report. Place a check mark (press enter) by each graph you want includ-
ed in the printed report. Press ESC to start printing.
USING YOUR PC, PTT AND MODEM TO CALL A CONTROL
If this is your first attempt at modem communication with a RayTemp control we recommend that
you first try everything in your office using two phone lines. Connect the RayTemp to an external
modem and connect this modem to one line and your PC modem to another. Next, configure the
RayTemps modem as described in the previous section. Make sure that the modem’s auto answer
“AA” light is on. Also, buy a modem cable from RayTemp - at least for your first installation. This
will prevent 80% of your possible problems.
To “get on-line” with the RayTemp, start the PTT software and select “Options” from the menu
bar at the top of the screen. Enter the port number (usually 1 or 2) for the modem connected to
your PC and make sure the speed is set to 9,600. Then press Ctrl-Enter and select “TechTerm”
from the menu bar. A set of seven windows will appear. Start entering the phone set up commands:
“ATE1” “ENTER” Return should show “OK”. If not, re-enter.
“AT&F” “ENTER” Return should show “OK”.
“AT&D0” (zero) “ENTER” Return should show “ok”.
For example, to place a call, dial “ATDT5551212” and wait for a “Connect” message (replace the
“5551212” with your actual phone number). If the screen is blank, type “ATE1” and try again.
Note: The “Modem” section on the menu bar does not work with the RayTemp. Once you see
the “Connect” message in the TechTerm window press F1 and then F6 to begin communication.
12
To end the modem session, select the following screen in the LapTop window.
This screen is used to terminate the call. The RayTemp will
actually terminate the phone connection and prevent the
modem from answering the phone for about five minutes.
The message "CARRIER LOST" will appear in the LapTop
window. Another call may then be placed to contact
another RayTemp sharing the same phone line. Always use
MC-Modem Control
F4 to Hang-Up
this method to end a modem call to the RayTemp in shared phone-line applications. It's also a
good idea to have an actual telephone connected to the line. Make sure a dial tone is present to
verify that the call has been terminated.
13
Section 4. PROGRAMMING
QUICK REFERENCE
This section describes all the programmable features of the control. You make program changes
from the front panel or by using a laptop. For information on connection with a LapTop using PTT
software, refer to the previous section. The following keys provide access to all RayTemp display
and programming features. These keys apply to the front panel or LapTop display as shown
below. A screen saver clears the display after five minutes on the LapTop. Press F1, then F6 to
restore the screen.
Front Panel
Key
Laptop
or PC Key
Screen Selected
Returns to first screen, then press two
keys for direct access to any screen as
listed on the next screen
WINDOW
F1
UP & DOWN
WINDOW DOWN
WINDOW UP
VALUE+
F2
F3
Select next screen
Select previous screen
Increase program value
Decrease program value
Select next field in a screen
F4
VALUE-
F5
FIELD RIGHT
FIELD LEFT
SPACE
BACKSPACE Select previous field in a screen
Activate full-screen viewing (PC with
F6
PTT only)
SHIFT F6
14
Screen code and description, in sequence of appearance
See page
FM
SE
OS
RT
ST
PRODUCT IDENTIFICATION - Model, type, and version
SENSORS - Displays temperature of each standard sensor
OPTIONAL SENSORS - Displays other sensors
RELAY TEST - On/ Off relay status and manual override
SENSOR TEST - Simulates sensor temperatures
17
17
17
17
23
RM
RUN TIME METERS - Total on-time for each heater or stage
DL
TL
CK
TS
DETAIL LOG - Shows history values for seven days
TREND LOG - Shows history values for one year
CLOCK - Display and set time and date
TIME SCHEDULE - Seven day, 20 schedule, time clock
ERASE/ RESET - Selective clear or restart
17
19
18
28
ER
MC MODEM TEST - Terminate call or test modem or fax
PD
PERFORMANCE DATA - Savings Analysis
24
DN
PN
SL
TEXT - Company Name
TEXT - Property Name
TEXT - Site Location
TEXT - Disk File Name
26
26
26
26
FN
MS
SH
AD
FD
PW
PM
RL
TEXT - Modem Setup
26
26
26
27
18
18
23
TEXT - Modem Disconnect
TEXT - Pager Dial-Out
TEXT - Fax Dial-Out
TEXT - Security Password
TEXT - Front Panel Menu
TEXT - Relay Logic (1-12)
T1
T8
SELECT - Supply Sensor Offset
Not used for this model
25
C0
C1
C2
C3
C4
C5
C6
C7
SELECT - Maximum Supply Temperature
SELECT - Minimum Supply Temperature
19
19
19
19
19
19
20
20
SELECT - Outside Temperature for Maximum Supply
SELECT - Outside Temperature for Minimum Supply
SELECT - Night Setback at Maximum Supply
SELECT - Night Setback at Minimum Supply
SELECT - Morning Boost at Maximum Supply
SELECT - Morning Boost at Minimum Supply
Screen codes in Boldface are described in detail on the pages listed.
15
Screen Code and Description - continued
See page
HL
LL
SELECT - Supply High Limit
SELECT - Supply Low Limit
20
20
DW SELECT - Demand window in minutes
DM SELECT - Demand % for maximum temperature
20
20
20
DA
SELECT - Demand % for ASL strategy
R0
R1
R2
E0
E1
E2
B0
SELECT - # of Room Sensors Installed
SELECT - Desired Daytime Room Temperature
SELECT - Desired Nighttime Room Temperature
SELECT - Recovery sensor installed
SELECT - Minimum recovery time
SELECT - Recovery sensor response
SELECT - # Branch sensors installed
21
21
21
22
S0
S1
S2
SELECT - Days to Acclimate Residents
SELECT - Day of Month for Savings Test
SELECT - Old Maximum Supply Temperature
19
24
24
HS
SP
SQ
US
DD
D1
SELECT - # of water heaters
SELECT - # stages per heater
SELECT - Alternating Relay Sequencing
SELECT - Use 24Volt on/ off sensing
SELECT - Deadband (also known as hysteresis)
SELECT - Temperature Delay Between Stages
22
22
22
22
23
23
LK
CU
SELECT - +- Keys Locked
SELECT - Celsius Units
18
17
LG
SELECT - Access Data Logger #
SELECT - Fax Graph Max Temp
SELECT - Fax Graph Min Temp
SELECT - Fax on Day Of Month
XX
XN
XM
27
27
27
27
27
XW SELECT - Fax on Day of Week
XH SELECT - Fax on Hour of Day
MO SELECT - Operating Mode
17
26
BA
SELECT - Communication BAUD Rate
SELECT - Network address number
NI
16
FIRST SCREEN AT POWER-UP
FM PRODUCT IDENTIFICATION. This screen displays the model number, type of control,
copyright notice, and software version number. Press F2 to select the next screen in order, or press
two keys for direct access to any one of the following screens.
MANUAL OVERRIDE
MO SELECT (MODE) - Operating Mode selects one of three states of operation. In Run mode
all control functions are operational. In Bypass mode, control is returned to the mechanical con-
trols if provided. In Off mode all systems are shut off and remain off indefinitely. In all three modes
the RayTemp data logger and modem/ fax functions continue to operate.
VIEW SENSORS AND RELAYS
SE SENSORS - Displays the setpoint and current temperature reading from each primary tem-
perature sensor.
OS OPTIONAL SENSORS - Displays current temperature reading from each optional temper-
ature sensor.
RT RELAY TEST - Displays on/ off status of each relay output. Press SPACE or BKSP to a select
relay (flashes). Then press F4 to test on, F5 to test off. To return control to the RayTemp, press
SPACE or BKSP until no locations flash. The RayTemp will automatically retake control if no man-
ual testing takes place for five minutes.
TIME AND DATE
CK CLOCK - Displays present time and date. To set, press SPACE, F4 and F5.
CELSIUS / FAHRENHEIT SCALE
CU SELECT - For Celsius units, select Yes and all process and program values will be displayed
in the Celsius temperature scale. (The default setting of No selects the Fahrenheit scale.)
17
ERASE MEMORY / RESET PROGRAM
ER ERASE/ RESET - Press F4 or F5 to select which item will be reset or cleared, then press
CTRL+E to confirm each action.
Set BAUD Rate will reconfigure the serial port according to the BA screen. If the speed is differ-
ent, then reset the BAUD rate on your LapTop (garbage characters will appear).
Zero Run Meters set all run-time meters to zero.
Erase History sets all 7-day and 365-day history to -30.
Reset Program sets all program values to factory default values.
Erase All does all the above (requires 30 seconds).
SECURITY PASSWORD
PW TEXT - Security Password This screen is used to prevent unauthorized access to the
RayTemp, either by modem or direct connection. To use this feature, select a password up to 40
characters and enter it on this screen. Then, all future communication with the control will be
blocked until this password is entered. A screen will appear asking for the password. Make a note
of your password, since you will not be able to access the control without it! By default, no pass-
word is required. To disable password protection erase all text in this field.
FRONT PANEL MENU / LOCK
PM TEXT - Front Panel Menu This option provides for limited access by the building care-
taker to a fixed set of screens from the front panel. By default, 13 of the most commonly used
screens are accessible from the front panel. They are identified in this screen by their two charac-
ter access code. This line of text can be modified to select a custom set of screens, in any order,
up to 13 screens. If the first character on this line is a space (' ') then this menu system will be dis-
abled and all screens will be accessible from the front panel. To gain access to all of the screens
using only the front panel, press both VALUE keys while in the PRODUCT IDENTIFICATION
screen. This enters a first character space as described above.
LK SELECT - +- Keys Locked When Activated This option prevents changing of pro-
grammed values from the RayTemp front panel + and - keys.
WARNING: This option cannot be deactivated from the control itself. Deactivating this screen
requires either (1) a connection to a PC running the PTT software, or (2) returning the control to
the manufacturer to have them reset this option.
18
TIME SCHEDULE
TS TIME SCHEDULE This is a seven-day time clock. Each line is a program for starting a new
period (such as Night) on a day (such as M-F) and at a time (such as 6:00 am). Up to 20 lines can
be displayed or programmed using the SPACE, F4 and F5 keys. Periods end automatically when
a new one starts. The day codes are M-F (Monday thru Friday), S-S (Saturday and Sunday), F-S
(Friday thru Sunday), and --- (no days). The recommended setting for intial programming is ---
(no days) on all settings. Changes can be made to accommodate individual schedules.
SUPPLY TEMPERATURE
The RayTemp control strategy closely matches water temperature to demand as hot water use
varies throughout the day. The setpoint is adjusted based on a demand profile which is recorded
for the last seven days. The RayTemp scans this profile and adjusts the setpoint in anticipation of
demand. This strategy is complemented with a seven-day time clock which can provide fixed tem-
peratures during certain hours for special requirements, such as laundry.
C0 SELECT - Maximum Regular Temperature During Regular periods the desired temper-
ature will be set between (screen) C0 and C1 according to demand. The time clock schedule deter-
mines when Regular takes effect. Default Temp 140°F.
C1 SELECT - Minimum Regular Temperature The supply temperature will not be set below
this value during Regular periods. Default Temp 130°F.
C2 SELECT - Maximum Peak Temperature C2 and C3 become the new maximum and min-
imum temperatures when the time clock schedule is in Peak mode. Default Temp 140°F.
C3 SELECT - Minimum Peak Temperature During peak periods the supply temperature will
not be set below this value. Default Temp 130°F.
C4 SELECT - Maximum Laundry Temperature C4 and C5 will be the maximum and mini-
mum temperatures in effect if Laundry is activated by the seven-day time clock. For laundry needs
C4 and C5 will usually be set to the same value. Default Temp 140°F.
C5 SELECT - Minimum Laundry Temperature See C4 above. Default Temp 140°F.
19
C6 SELECT - Maximum Extra Temperature C6 and C7 are an extra set of temperatures
which can be scheduled for any purpose. They will become the maximum and minimum supply
temperature if the Extra schedule is activated by the time clock. Default Temp 140°F.
C7 SELECT - Minimum Extra Temperature See C6 above. Default Temp 130°F.
HL SELECT - Supply High Limit If the recovery temperature or the return temperature is very
low, the RayTemp may need to take the supply temperature above the programmed maximum.
Regardless of any conditions, the RayTemp will not take the supply or any branch temperature
above this high limit value. If the supply temperature exceeds this value by 10°F then alarm dial-
out will be activated. Default Temp 140°F.
LL SELECT - Supply Low Limit The RayTemp will not schedule the supply temperature lower
than this value (or programmed minimum). If the supply temperature drops 10°F below this value
then alarm dial-out will be activated. Default Temp 120°F.
DW SELECT - Demand Windows in Minutes This value sets the time period of demand
history to be used in calculating desired temperature. The default value should yield a smooth pro-
file. Decreasing this value will cause faster response to changing demand at the risk of instability.
Increasing this value will produce a very smooth desired temperature profile, however the tem-
perature may not rise quickly enough during peak demand periods. The range is from 10 to 90
minutes. Default Value 40.
DM SELECT - Demand % for Maximum Temperature This feature provides a means of
increasing temperature in oversized systems which show very little demand. Example: Set to 50% .
When demands of 50% or more are encountered, the desired temperature will be at programmed
maximum. Below 50% the desired temperature will be proportional between maximum and min-
imum programmed values. The range is from 10 to 100 percent. Default Value 100.
DA SELECT - Demand % for ASL Strategy This feature automatically adapts to manual
changes in the optional, secondary aquastat setting which may occur after installation. This
ensures continued savings even if the aquastat is lowered. (ASL is an acronym for Aquastat Set too
Low). The strategy works by lowering the setpoint temperature until the RayTemp has regained
control. For each 24-hour period that demand exceeds this DA percent, the setpoint is lowered by
5°F. Then for each 24-hour period that heater demand is less than one half of DA, the setpoint is
increased by 1°F until the original value is restored. The default value is 70% . The PERFORMANCE
DATA screen titled Temp Reduced by ASL Strategy will show a value other than zero if this strat-
egy is in effect. Default Value 70.
20
RETURN TEMPERATURE
The return sensor is used to compensate for seasonal changes in loop heat loss. The strategy may
raise the supply/ branch temperature in cold weather to ensure that the last rooms on the loop
have hot enough water even during low demand periods.
R0 SELECT - Return Sensor Installed Select YES if this sensor is connected, otherwise select
NO. Default is YES.
R1 SELECT - Minimum Return Temperature If the return temperature drops below this
value then the return sensor strategy will be activated. Above this value, the strategy will have no
effect on desired temperature. Default Temp 108°F.
R2 SELECT - Return Sensor Response This is a multiplier which increases the desired tem-
perature as the return temperature drops. Example: desired = 130, return = 100, R1 (above) = 102,
R2 = 5. The desired temperature will be increased to 140 = 130 + (102-100) X 5. Default Value
is 1.
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BRANCH TEMPERATURE - NOT USED
B0 SELECT - # of Branch Sensors Installed Not used.
RELAY SEQUENCING
HS SELECT - # of Heaters Enter 1 thru 4 for the number of heaters connected to relay out-
puts 1 thru 4. This allows the RayTemp to correctly sequence heaters and record demand.
SP - SELECT - Stages Per Heater Enter the number of stages in each heater, from 1 to 4.
SQ - SELECT
Firing Options
Four options for stage sequencing are available. Select number 1, 2,
3, or 4 as follows:
#1
#2
#3
No Lead/ Lag: Stage 1 of heater #1 always fires first. The
remaining stages and heaters will fire in order as demand
increases.
24-Hour Rotation: At midnight each day, the firing order is
rotated to the next heater. This distributes the work load
equally among all heaters.
Lead/ Lag & Rotate: With this option, heater #1 always fires
first, then the remaining heaters fire in rotation. Since some
designs require heater #1 to fire first; this option meets this
requirement while still providing limited rotation.
flue
US SELECT - Use 24volt on/ off sensing. Do not use.
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DD SELECT - Differential Increasing DD lengthens the heater burn cycle; decreasing DD
improves temperature stability. For instance: desired=140, deadband=1, heater turns off at 141
and on at 139. This deadband applies equally to all stages.
D1 SELECT - Temperature Delay Between Stages (In addition to differential setting)
This value causes successive output stages to come on according to the deviation to target tem-
perature. D1 activates additional heaters or stages as demand increases. For example with a set-
point of 140°F and a temperature delay of 1°F, stage 1 will fire at 140, stage 2 at 138, stage 3 at
136, etc., assuming 2°F deadband.
RL TEXT - Relay Logic (1-12) The default value is ++++++++++++. NOTICE: If you select
minus (-) and the RayTemp loses power or fails, then the heater or pump will remain off!!! Edit
text with SPACE, BACKSP, F4, and F5 to return to a plus setting.
SENSOR OVERRIDE TEST
ST SENSOR TEST This feature allows you to simulate any sensor temperature and observe the
affect on desired temperature and relay sequencing. Press SPACE or BKSP to select a sensor, then
override the actual sensor temperature by pressing F4 or F5. Each key stroke changes the tem-
perature by one degree F. Press Shift+F4 or Shift+F5 to adjust the temperature by one-tenth of a
degree (works with PTT). You can change any or all sensors values and then look at other screens.
While in this mode all temperature values will be frozen at the values you select. To restore the
actual sensor values, press SPACE or BKSP until Inactive ###.# appears. The RayTemp will auto-
matically restore actual sensor values 30 minutes after exiting this screen.
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SAVINGS TEST SETUP
S1 SELECT - Day of Month for Savings Test Selecting a value other than 0 (default) acti-
vates the flip-flop savings test. This test will cause a simulation of conditions before the RayTemp
was installed - for 24 hours on the day specified every month. The test will run only on the day
of month selected AND on multiples of that day. Examples: Values 16 thru 28 will run test for that
day only. Value 14 will run test on day 14 and 28. Value 5 will run test on day 5, 10, 15, 20, 25,
and 30. One day of testing may not yield accurate results, while four or more days of testing will
significantly cut into savings. The recommended value is 14 (2 test days).
S2 SELECT - Old (Maximum) Supply Temperature Enter the supply temperature prior to
installing the RayTemp if you wish to use the Acclimate feature or Savings Test feature (above). If
the preexisting control operated at a fixed temperature enter that value here and also in the next
screen.
SAVINGS TEST RESULTS
PD PERFORMANCE DATA From this screen press F4 or F5 to view savings analysis statistics
as described below:
Average Energy Savings % Displays the average energy savings in percent during the last 365
days. This can be used to determine actual dollars savings and payback period. This feature will
not operate unless a day of month for savings test is selected. A flip-flop test then is activated
which alternates between RayTemp mode and baseline mode (which has higher energy con-
sumption).
Baseline Heater Run Time % Displays average heater demand during Baseline mode for the last
365 days (simulating a fixed setpoint control). This is diagnostic information used in calculating
savings.
RayTemp Heater Run Time % Displays average heater demand for all heating days except base-
line days during the last 365 days. This is diagnostic information used in calculating savings.
Days in Baseline Mode Shows the number of days during the last year that RayTemp was in base-
line mode - simulating the preexisting fixed setpoint control.
Days in RayTemp Mode Shows the number of days during the last 365 days when there was
demand for heat and baseline mode was not in effect.
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Total days in service displays the total operating days in modes RUN, BYPASS, and OFF. When 24
VAC power is absent this value will not increase however the clock will still operate.
Number of power interruptions value is incremented each time 24 VAC power is removed or inter-
rupted.
ASL strategy temp reduced a value other than zero indicates that the RayTemp has reduced its set-
point temperature by this amount. This was done to regain control because the existing aquastat
setting was lowered.
SENSOR CALIBRATION
The following screens allow you to introduce a fixed positive or negative offset to any tempera-
ture input. You will not normally need to make any adjustments here since RayTemp sensors and
electronics are very accurate. The default values in these screens compensate for a small self-heat-
ing affect on the thermistor sensor. For small-mass base thermistors, the offset is -2.5°F. For ther-
mistors mounted in housings or attached to a pipe with thermal paste the offset is -1.5°F.
You can check measurement accuracy of RayTemp using fixed resistors and the resistance/ tem-
perature chart published by Independent Energy. Before doing this first set each offset below to
zero.
T1 SELECT - Supply Offset for sensors 1 thru 7
T8 SELECT - Supply Offset for sensors 8 thru 15. Not used for this model
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LOCATION TEXT
DN TEXT - Company Name Accepts entry of company name into RayTemp memory. This
information will appear in installation reports. Edit with SPACE, BACKSP, F4, and F5.
PN TEXT - Property Name Accepts entry of site name into RayTemp memory. This informa-
tion will appear in installation reports. Edit with SPACE, BACKSP, F4, and F5.
SL TEXT - Site Location Accepts entry of city and state names into RayTemp memory. This
information will appear in installation reports. Edit text with SPACE, BACKSP, F4, and F5.
FN TEXT - Disk File Name Accepts entry of a DOS file name into RayTemp memory. The
installation report and graphs will be saved in a file under this name (seven characters maximum).
Edit text with SPACE, BACKSP, F4, and F5. Only needed when logging data to a connected
LapTop.
DATA MODEM SETUP
BA SELECT - Communication Baud Rate For direct connect, use 9600 Baud. For modem
use, set at required 9600. Speed is activated only during power-on reset or from ER ERASE/ RESET
screen.
MS TEXT - Modem Setup Accepts entry of AT command string into RayTemp memory. If a
modem is installed, the RayTemp will transmit this command string to configure your modem. Use
the Hayes-compatible modem manual for information about the AT commands. This text will also
appear on installation reports. Edit text with SPACE, BACKSP, F4, and F5. Once set, write down
at command string.
SH TEXT - Modem Disconnect Accepts entry of AT commands into RayTemp memory. If a
modem is installed the RayTemp will transmit this command to the modem to terminate the phone
connection and prevent the modem from answering another call.
AD TEXT - Pager Dial-Out Accepts entry of AT commands into RayTemp memory. If a
modem is installed the RayTemp will transmit this command to the modem if an alarm condition
exists. For example, commands can be selected to dial a pager and display a code to identify the
calling RayTemp unit. Consult your Hayes-compatible modem manual for more information about
AT commands. This text will appear on installation reports. Edit text with SPACE, BACKSP, F4, and
F5.
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FAX MODEM SETUP AND TEST
FD TEXT - Fax Dial-Out Use this screen to enter the phone number of the fax machine which
is to receive fax alarm messages, installation reports, and/ or graphics. Example "ATDT5551212".
Edit text with SPACE, BACKSP, F4, and F5.
XX VALUE - Fax Graph Max Temp This value sets the highest value of the Y-axis tempera-
ture scale for all faxed graphs. This item is unrelated to PC graphics. Autoscaling is not support-
ed.
XN VALUE - Fax Graph Min Temp This value sets the lowest value of the Y-axis tempera-
ture scale for all faxed graphs. This item is unrelated to PC graphics. Autoscaling is not support-
ed.
XM VALUE - Fax on Day of Month A complete installation report with graphics of logged
data can be automatically faxed, once a month, to any group III fax machine. This value sets the
day of the month to transmit this data. The report consists of seven pages. The first two pages
give all program values and performance data, such as percent savings. The next three and one-
half pages are detailed graphs for the last seven days. The last one and one-half pages are trend
graphs for the last 12 months. The default day of zero disables this function.
XW VALUE - Fax on Day of Week Detailed graphs of logged data for the last seven days
can be automatically faxed, once a week, to any Group III fax machine. This value sets the day of
the week to transmit this data.
Value
Transmit
None
Day Graphs
0
1
2
3
4
5
6
7
8
None
Monday
Tuesday
Wednesday
Thursday
Friday
Last 7 days on 3 1/ 2 pages
Last 7 days on 3 1/ 2 pages
Last 7 days on 3 1/ 2 pages
Last 7 days on 3 1/ 2 pages
Last 7 days on 3 1/ 2 pages
Last 7 days on 3 1/ 2 pages
Last 7 days on 3 1/ 2 pages
Yesterday full size on 1 page
Saturday
Sunday
Every Day
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XH VALUE - Fax on Hour of Day This option sets the time of day to transmit fax reports. It
works in conjunction with XW and XM, above. The RayTemp will attempt to fax the specified data
on the specified day (above) and at this specified time. Military time is used with values of 0 to
23, 12 is noon. If the first attempt is not successful then the RayTemp will make two more
attempts at 10 minute intervals. Where multiple RayTemps are calling into one fax machine it's
very important to set each control to a different day and/ or time, otherwise some controls may
always get a busy line.
MC MODEM TEST This screen provides for modem testing and manual fax transmission of
reports and graphics. The following table describes the options in this window. These options are
selected using the FIELD keys and activated by pressing the PLUS key. The "Status:" line in this
window reports progress of the action as shown in the second table below.
Option
Setup
Transmit
Function Pages
"Modem Setup" command to modem
"Modem Disconnect" command to modem
"Pager Dial-Out" command to modem
Warning message, identifies location
Report Installation report
N/ A
Disconnect
Pager Alarm
Fax Alarm
Fax
N/ A
N/ A
1
2
3
1
4
1
1
7
Fax Year
Trend graphs for last 12 months
Trend graph for the 4 month period
Detailed graphs for the last 7 days
Detailed graph for one day, today
Detailed graph for one day, yesterday
Report and all graphs
Fax Month
Fax Week
Fax Today
Fax Yesterday
Fax All
Status
Description
(blank)
No Activity
Sending
Transmission in process. This message may remain for up to 12
minutes depending on the action selected
OK
Data modem or fax modem has successfully completed the
operation. Failed data modem or fax modem did not reply or was
unable to complete the action requested
Failed
Data modem or fax modem did not reply or was unable to complete
the action required
Note: The "Pager Alarm" action will always reply "Failed" because the modem does not connect
with another modem. In this screen, no actions will retry in the event of transmission failure (press
plus (+) again). However when actual alarm conditions occur or when reports are scheduled for
automatic transmission the RayTemp will retry. Up to three attempts will be made, per day, at 10-
minute intervals.
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WARRANTY
The Raypak RayTemp Control is warranted to be free from defects in material and workmanship for a peri-
od of one year from the date of installation or fourteen months from date of shipment, whichever occurs
first.
THE FORGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER WARRANTIES NOT EXPRESS-
LY SET FORTH HEREIN, WHETHER EXPRESSED OR IMPLIED BY OPERATION OR LAW OR OTHERWISE,
INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY OF FITNESS.
At its option, Raypak will repair or replace any RayTemp Control which fails to conform to this warranty.
Repair or replacement shall be the sole remedy of the buyer under this warranty, and Raypak shall not be
liable for any installation, removal or reinstallation costs, or for any damage and/ or injury to building, con-
tents, products or persons by reason of the installation of the RayTemp Control, or for incidental or conse-
quential losses, damages or expenses, including loss or profits, directly or indirectly arising from this sale,
handling or use of the goods, or from any other cause relating thereto, whether such claims are for breach
of warranty or negligence.
Any claim by buyer with reference to the Raypak RayTemp Control sold hereunder for any cause shall be
deemed waived by buyer unless submitted to Raypak in writing within thirty (30) days from date buyer dis-
covered, or should have discovered, any claimed breach. To obtain service under this warranty, call or write:
RAYPAK, INC.
2151 Eastman Avenue
Oxnard, CA 93030
805-278-5300
SERVICE/ RETURN AUTHORIZATION PROCEDURE
Raypak will not accept a returned unit unless the buyer has received prior authorization to return the unit.
If a problem is suspected with the RayTemp control while under warranty, the owner or operator should
first call the installing dealer. The dealer should contact Raypak at the above phone number for return
authorization. Required information: name of site, location, serial number, reason for return. An authoriza-
tion number will be issued. Repaired or replacement equipment will be returned to you prepaid.
Warranty Card
Please return this card within 30 days of installation to initiate your warranty and enable us to better serve you
Control Model: ___________________________________ Date Purchased: __________________________________
Control Serial Number: _____________________________ Date Installed: ____________________________________
Water Heater Model Number:_______________________ Water Heater Serial Number: ________________________
Company Name: __________________________________ Contact Name: ____________________________________
Company Address: ________________________________ City: _________________ State:_____ Zip Code:________
Installation Location: _________________________________________________________________________________
Installation Address: _______________________________ City: _________________ State:_____ Zip Code:________
Type of Property: Apt/ Condo_______ Hotel/ Motel_______ Other ________
RayTemp Dealer: __________________________________ Address: _________________________________________
City: _____________________ State: ______ Zip Code: ______________
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