LP-551 Rev. 3.9.16
43
Screen
Description
Function 17
0-10 Volt Function
0-10 VOLT FUNCTION
TEMPERATURE 17
Control boiler modulation through
temperature
control.
Factory
Default = Temperature (Temperature
only on VWH).
Function 18
Step Modulation Mode
STEP MODULATE MODE
ON 18
Not applicable on this product.
Function 19
Boiler DHW Temp
BOILER SUPPLY DHW
180
o
F 19
Not applicable on this product.
Function 20
Water Safety Input
WATER SAFETY INPUT
WATER PRESSURE 20
The user can select various water
safety inputs used in the boiler
system. Default: Flow Switch
(Range: None / Low Water Cut Off /
Flow Switch / Water Pressure).
Function 21
Error Outdoor Sensor
ERROR OUTD SENSOR
OFF 21
Not applicable on this product.
Function 22
Adjust Boiler Output %
ADJ HEATER OUTPUT
100% 22
Adjusts the boiler output down
from 100% to 50%. Factory Default:
100%. (Range: 100% – 50%)
Function 23
Cascade Mode
CASCADE MODE
VISION 3 23
Allows the user to select cascade
mode. Factory Default: Vision 3
(Range: 926 Boilers / Vision 3).
Function 24
Cascade Rotation
CASCADE ROTATION
48 HOURS 24
Sets the amount of hours before
the first boiler in the cascade firing
rotation will be changed. NOTE: If
this is set to 0, the firing order of the
boilers will not rotate. Default: 48
hours (Range: 0 – 240 hours).
Function 25
Cascade DHW Mode
NOT USED
NOT USED 25
Not applicable on this product.
Function 26
System Freeze Protection
SYS FREEZE PROT
PROTECT OFF 26
NOTE:
This parameter is only
present if the boiler is a cascade
master. Allows the user to set the
freeze protection when a system
pump is used. Factory Default: OFF.
Selection of temperature activates
freeze protection. (Range: OFF,
-40
o
F – 104
o
F).
Function 27
Error System Sensor
ERROR SYSTEM SENS
ON 27
Sets the control to display an error
message if the system sensor is
open or shorted. NOTE: This error
does not stop the boiler (or boilers)
from running. Factory Default: ON
(Range: ON / OFF).
Function 28
Freeze Protection
FREEZE PROTECTION
ON 28
Allows the user to set freeze
protection on the boiler. Factory
Default: ON (Range: ON / OFF).
Function 29
DHW Modulation Mode
DHW MODULATE MODE
NORMAL MOD 29
Not applicable on this product.
Function 30
Extra Boiler Mode
EXTRA BOILER MODE
OFF 30
Allows for a non HTP boiler to
be controlled when the cascade
output has risen above the percent
of the cascade firing rate set in this
parameter. Factory Default: Off
(Range: 50% - 100%).
Function 31
System Sensor Mode
SYSTEM SENSOR MODE
OFF 31
Suppresses the ‘NO FOLLOWER’
display message if the boiler is used
as a cascade master boiler with no
follower boilers connected. Factory
Default: OFF (Range: ON / OFF).
Function 32
Service Schedule
SERVICE SCHEDULE
OFF 32
Selects a service date or time based
on the boiler run hours to program
the boiler maintenance schedule.
Factory Default: OFF (Range: Date
or Run Hours). NOTE: Without
setting this function, Functions
33/34/35/36 will not display.
Function 37
Modbus Mode
MODBUS MODE
OFF 37
Enables Modbus Mode on the
appliance. Factory Default: OFF
(Range: OFF, ON, AUTO). NOTE:
Turning Modbus Mode “ON” will open
a number of additional parameters
to customize Modbus installation.
See Modbus Instructions (lp-372) for
details. NOTE: Turning this Mode
“ON” without a connected and
powered Modbus communication
adapter (p/n 7350P-629) will result
in improper appliance operation.
Service calls associated with this
ARE NOT covered by warranty.
Function 56
OA1 Configuration
O-10V A OUTPUT CONFIG
POWER BOIL 56
Controls the operation of the 0-10V
A output on the Field Connection
Board. Factory Default: BOIL
POWER (Range: BOIL POWER
/ CASC POWER / FAN SPEED /
ALARM / TEMPERATUR / FLAME /
DO NOT USE).
The following information details the 0-10V output parameters
described in Function 56 that can be read at a Building
Management System.
BOIL POWER
- 0-10V output is proportional to boiler firing rate.
0V = Not Firing, 1.5V = Minimum Firing Rate, 10V = Maximum
Firing Rate
CASC POWER
- When configured on the Cascade Master, 0-10V
is proportional to the firing rate of the Cascaded System. 0V =
Not Firing, 1.5V = Minimum Firing Rate (One Boiler Lit), 10V =
Summary of Contents for EP-220 VWH
Page 33: ...LP 551 Rev 3 9 16 33 Figure 24 Cascade Master and FollowerWiring ...
Page 34: ...LP 551 Rev 3 9 16 34 Figure 25 Internal Connection Diagram ...
Page 57: ...LP 551 Rev 3 9 16 57 Figure 30 Combustion System Replacement Parts 220kBTU Model ...
Page 58: ...LP 551 Rev 3 9 16 58 Figure 31 Combustion System Replacement Parts 299 399kBTU Models ...
Page 59: ...LP 551 Rev 3 9 16 59 Figure 32 Replacement Parts All Models ...
