lp-673 Rev. 000 Rel. 001 Date 8.30.18
39
Display
Default
Detail
Description
20:HA
0-2
High Elevation Mode
This water heater may be installed at elevations up to 10,000 feet and operate on
either Natural or LP. The appliance will de-rate by 4% for each 1000 feet above sea
level. Select the appropriate installation location as described below.
Selects Installation Location for Proper Water Heater Operation at Altitude:
0-2 for installation locations from sea level to 1999 feet
2-5 for locations from 2000 to 4999 feet
5-8 for locations from 5000 to 7999 feet,
8-10 for locations from 8000 to 10000 feet
Default: 0 – 2
NOTE:
Use a calibrated combustion analyzer to ensure CO and CO2 are within the
ranges shown in this manual. Adjust the offset screw in the clockwise (positive) or
counterclockwise (negative) directions (approximately 1/8 turn) if the measured CO2
value on LOW FIRE is out of range.
21:AP
AP:cP
5
System Pump and Heater
Pump Test Mode
This function sets the time to run the system pump or heater pump to purge air
from the system. Range: 1 – 30 minutes
cP:oFF
or
cP:on
OFF
System Pump and Heater
Pump Test Mode
Turn this function on to activate system pump and heater pump.
Only works in installation mode. Turns off when in normal mode.
22:SS
SS:Sd
OFF
OFF
Sets the date of the next service reminder: XX/XX/XXXX (MONTH/DAY/YEAR).
NOTE:
A wrench will appear on the display panel when service is due.
YEAR
Service Reminder Date
MON
DATE
SS:br
00
Service Reminder Run Hours
Sets the next service reminder based on burner run hours. (OFF, 0 - 9000 hours)
23:UC
FAH (F)
FAH(F)
Temperature Measurement
Unit
Allows the user to change the temperature measurement unit from Fahrenheit to
Celsius.
CEL (C)
24:SA
AquA
AquA
Select AquA or SEnS
Select DHW Sensor Type
Range: AquA (Aquastat) or SEnS (Sensor)
SEnS
25:rE
rE
rE
Select rE or Co
Changes DHW Setpoint Temperature Range
rE (95 - 140
o
F [35 - 60
o
C]) or Co (95 - 160
o
F [35 - 71.1
o
C])
Co
Table 27 - Installer Mode Descriptions
Turn the dial
counterclockwise and clockwise to scroll through
the displayed parameters. To view parameter details, press the
button at the appropriate screen. Turn the dial
counterclockwise
and clockwise to change the selected parameter. To save the setting
press the
button.
To leave Installer Mode, press the
button again. The display will
return to power off mode.
G. Setting Up a Cascaded System
For each floor containing bedroom(s), a carbon monoxide detector
and alarm shall be placed in the living area outside the bedrooms,
as well as in the mechanical room that houses the heater. Detectors
and alarms shall comply with NFPA 720 (latest edition). Failure to
comply with these requirements could result in product damage,
severe personal injury, or death.
A maximum of sixteen (16) models may be installed in a cascaded
system. Installing more than the maximum amount of water heaters
in a cascaded system will result in system problems, property
damage, and premature water heater failure. Such problems ARE
NOT covered by product warranty.
When setting up a cascade system, each individual water heater
control must be programmed for cascade operation.
There are three modes of operation available in Cascaded
Systems:
1. Standard Configuration
- Refers to a Cascaded System where
the Master water heater controls Follower water heaters
to meet the system setpoint. This set up requires either a) a
system pump, or b) individual pumps for each cascaded unit.
A system pump would be wired into the Cascade Master only.
Individual pumps are wired into the individual heater pump
line voltage terminal connections. There is either a DHW
sensor or aquastat installed in the storage tank. This sensor
is wired into the low voltage terminal strip of the Cascade
Master. Each water heater requires cascade wiring.
2. Continuous Operation
- Refers to a Retro-Fit Cascaded
System where there is no control location on the storage
tank and the pump runs continously. The Master water heater
controls Follower water heaters to meet the system setpoint
temperature. This set up requires a system pump. This pump
must be wired to line voltage for continuous operation. DO
NOT wire the system pump to the water heater. A system pipe
sensor is required, and must be installed on the return piping
near the storage tank. Each water heater requires cascade
wiring.
3. Building Automation System
- These water heaters are
equipped with a 0-10V DC input to control the operating
temperature of the cascaded system and storage tank. Once
voltage of 1.5V or greater is applied the Cascaded System
will begin maintaining the temperature based on the input
voltage and its respected temperature as listed in Table 33.
Note that the cascaded system will turn off when the voltage
is less than 1.5V.