HTP EP-220 VWH, Installation, Start-Up, Maintenance, Parts, Warranty

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LP-551 Rev. 3.9.16
42
Table 21 - Clock Setting Screens
NOTE: The internal clock does not adjust for daylight savings
time and requires manual adjustment.
E. Programming the System Setting
System Setting Program Access
Note: Programming the boiler control is not possible when the
boiler is firing. Make sure any input which can create a demand
on the boiler, such as the tank thermostat, is turned off, so the
boiler will remain idle to allow programming.
Screen Description
ENTER MENU CODE
000
To access the boiler setting program,
press and hold
ENTER for 4 seconds
until the display shows the screen at
left.
ENTER MENU CODE
925
Use the arrow keys to log in the Boiler
Menu Access Code - 925 . Press ENTER
to confirm the code and access the
Boiler Setting Program navigation
menu.
Table 22 - System Setting Access
F. System Setting Program Navigation
Once the System Menu Access Code is confirmed, the user can
begin to set the system setting menu. Use the < > keys on the
display to navigate through the System Settings. To change a
setting, press
ENTER . System settings can be increased by
pressing ^ and decreased by pressing v on the display. When
done, press ENTER . The setting will stop blinking and you can
move on to next setting. Press RESET to exit programming and
store settings. Listed below are the boiler settings that can be
programmed into the control.
Screen Description
Function 1 Factory Program Mode
MODE
VWH MODE 1
This indicates that the control is
configured correctly for a volume
water heater. Do not change this
setting.
Function 3 DHW Tank Max Temp
DHW TANK MAX TEMP
180
o
F 3
This is the maximum temperature
that can be selected in boiler settings
for the DHW tank. Factory Default is
180
o
F. (Range: 95
o
F to 180
o
F)
Screen Description
CLOCK MINUTE
08/28/2009 Fr 10:01A
Adjusts the minute setting.
CLOCK DAY OF WEEK
08/28/2009 Fr 10:01A
Adjusts the day of the week.
CLOCK DATE MODE
08/28/2009 Fr 10:01A
Allows the user to switch to European
date format (2009/08/28) from US
format (08/28/2009).
CLOCK YEAR
08/28/2009 Fr 10:01A
Adjusts the year setting.
CLOCK MONTH
08/28/2009 Fr 10:01A
Adjusts the month setting.
CLOCK DATE
08/28/2009 Fr 10:01A
The clock is set.
Screen Description
Function 4 Burner Off Differential
BURNER OFF DIFF
20
o
F 4
This is the amount of degrees
above tank set point that the
burner will maintain its outlet
water temperature while there is a
demand for heat. Factory Default is
20
o
F. (Range: 1
o
F to 45
o
F)
Function 6 VWH Post Pump Time
VWH POST PUMP TIME
0 MINUTES 6
The boiler pump has the ability to
post purge energy from the boiler
to the tank after the set point has
been achieved. Please note that
running the pump for a time greater
than 5 minutes may cause tank
energy to be released back to the
heat exchanger. Factory Default of 0
Minutes. (Range: 0 – 10 minutes)
Function 7 Warm Weather Shutoff
WARM WEATHER OFF
68
o
F 7
Not applicable on this product.
Function 8 Min Outdoor Temp
MIN OUTDOOR TEMP
5
o
F 8
Not applicable on this product.
Function 9 Max Supply Temp
MAX SUPPLY TEMP
190
o
F 9
Not applicable on this product.
Function 10 Max Outdoor Temp
MAX OUTDOOR TEMP
68
o
F 10
Not applicable on this product.
Function 11 Min Supply Temp
MIN SUPPLY TEMP
95
o
F 11
Not applicable on this product.
Function 12 Min Boiler Temp
MIN BOILER TEMP
68
o
F 12
Not applicable on this product.
Function 13 CH Post Pump Time
CH POST PUMP TIME
0 MINUTES 13
Not applicable on this product.
Function 14 DHW Priority
DHW PRIORITY
30 MINUTES 14
Not applicable on this product.
Function 15 Cascade Address
CASCADE ADDRESS
0 15
Bus addressing boilers (maximum
boilers allowed 8 in a cascade
system). Master Boiler address is 0
and Following Boilers are addressed
1 thru 7. Default: 0 (Range: 0 – 8).
NOTE: DO NOT USE ADDRESS 8.
Function 16 Optional Inputs
OPTIONAL INPUT
RETURN SEN 16
Allows the user to select optional
inputs to control or monitor the
system. Default: RETURN (Range:
Off / Booster Board / 0-10 Volt / DHW
Sensor / Return Sen).