lp-672 Rev. 000 Rel. 002 Date 10.3.18
42
G. Installer Mode
To activate Installer Mode, ensure the water heater display is powered off. Then press and hold button
for five seconds.
Figure 49 - Installer Mode Screens
Display
Default
Detail
Description
0:RC
Recirculation Pump
Operation
: Recirculation Pump is not used. (Recirculation and Preheat Modes are OFF.)
: Title 24 Mode (Required in California, Optional in other states). Recirculation
Mode requires a switch or motion sensor to activate.
: Preheat Mode is used. The water heater automatically turns on and meets the
DHW setpoint temperature when the internal temperature falls below the differential
setting (15:So).
: Internal Recirculation Mode - Internal Recirculation Pump is used.
: External Recirculation Mode - External Recirculation Pump is used.
1:EH
E0.00
Error history up to 10
Check ten most recent Error Codes (E0 - E9)
2:cE
OFF
Clear Error History
Select “ON” to Clear Error History. Range: ON or OFF
3:In
OFF
System Reset
(Factory Setting)
Select “ON” to restore system to default factory settings
(Burner operation time, Ignition cycles, and Supply power time will not be reset.)
Range: ON or OFF
4:FH
00
Maximum Fan Speed
Adjusts maximum fan speed. Range: -30 to +30
5:FL
00
Minimum Fan Speed
Adjusts minimum fan speed. Range: -30 to +30
6:dr
NO
Reset Burner Operation
Time
Select “YES” to Reset Burner Operation Time
Range: YES or NO
7:dl
NO
Reset Ignition Cycle
Select “YES” to Reset Ignition Cycles
Range: YES or NO
8:Cn
0
Cascade Address
Cascade Address
Range: 0 (Master), 1 (follower 1), …., 20 (follower 19). Default: 0.
NOTE:
“9:cP” needs to be set with total number of units in the cascade parameter before
setting “8: cn”
NOTE:
The Master water heater must always be addressed 0.
9:CP
1
Cascade Parameter
Number of Units Cascaded
Range: 01 - 20
10:CI
01
Minimum Operating
Number for Cascade
Units
Selects how many cascaded units will operate simultaneously when a DHW demand is
initially received.
Range: From 1 to Total Number of Units Cascaded
11:Eh
OFF
Factory Setting
Factory Setting - DO NOT CHANGE
12:Cr
Auto
Auto
Automatic Rotation
(default)
The first unit to operate when there is a DHW call is the unit that ran the least amount of
time during the prior heat calls (burner ON time).
Cr:Ct
48
Cascade Rotation Time
Cascade Rotation Time
NOTE:
If unit is set to run continuously, this parameter must be set, NOT Automatic Rota-
tion (Cr:at) to ensure even unit run time. Range: 0 - 240 Hours
13: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 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.
