lp-672 Rev. 000 Rel. 002 Date 10.3.18
43
14:AP
AP:cP
5
Pump Test Mode
This function sets the time to run pumps and powers the solenoid valve to purge air from
the system. Range: 1 - 30 Minutes
Pu:oF
or
Pu:on
OFF
Turn this function ON to activate pump testing. Only works in installation mode. Turns off
when in normal mode.
15:SS
SS:Sd
OFF
OFF
Sets the date of the next service reminder: XX/XX/XXXX (Month/Day/Year)
YEAR
Service Reminder Date
MON
DATE
SS:br
0
Service Reminder Run
Hours
Sets the next service reminder based on burner run hours. (OFF, 0 - 9000 hours)
16:So
15 F
Preheat, Recirculation,
and/or Air Handler
Differential Temperature
When set, the water heater will turn on when water temperature falls below this differential
temperature setting.
Example: If set point is 125
o
F and differential is 10
o
F, the water heater will turn on when
water temperature falls below 115
o
F.
NOTE:
This parameter is operational on Recirculation and Air Handler Modes ONLY. Default:
15
o
F. Range: 9 - 36
o
F.
17:UC
FAH (F)
FAH (F)
Temperature
Measurement Unit
Allows the user to change the temperature measurement unit from Fahrenheit to Celsius.
CEL (C)
18:IM
ON
ON
IWM Step Motor Mode
IWM Step Motor is in use (ON) or not in use (OFF).
OFF
19:dt
0
Delay time from DHW
Mode to Recirculation or
Air Handler Modes
Range: 0 - 2 minutes
20:SU
Cd
Solenoid Valve Operation
Cd – Comfort Mode. When this mode is active the solenoid valve energizes when the
water heater is over 90% of the capacity, and deactivate when water heater is less than
50% of the capacity. This can be used in combination with a combi appliance to increase
the domestic hot water production of the system.
AH – Air Handler Mode – This mode must be active when using an Air Handler application.
The pump will operate for 60 seconds every 6 hours if there was not a call for heat to
sanitize recirculation water.
Range: Cd – AH, Default: Cd
NOTE:
If AH is not selected when using an air handler T/T will not operate.
21: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 23 - 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.
H. 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.
