Thermal Solutions EVCA SERIES, Инструкция по установке, эксплуатации и обслуживанию

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89
D.
SETUP MENU
EVCA Modulating Fire Test Procedures and Specifications
Form # TSFP-001 Rev. H 4/12 Page 14 of 22
APPENDIX D (Cont…) - TSBC
TM
SETUP Menu
Display
Factory
Settings Range/Choices Description
WWSD
Off
Off
WWSD of Boiler
WWSD of Sys
Pump
Both
Specifies Warm Weather Shut-Down (WWSD) control of boiler and/or system pump.
Off: Ignores Warm Weather setpoint
WWSD of boiler: When Outside Air Temperature (OAT) is higher than the
WWSD setpoint, inhibits boiler start
WWSD of Sys Pump: When OAT is higher than the WWSD setpoint de-energize
System Pump output (SO)
Both: When OAT is higher than the WWSD setpoint, inhibit Call
for Heat and de-energized system pump output (SO)
LL Start
Trigger
90 50 to 100 %
Specifies the percent of maximum modulation rate the running boiler(s) must reach
before calling upon additional boilers for help.
LL Stop
Trigger
25 0 to 50 %
Specifies the percent of modulation rate that the running boiler(s) must be below
before shutting down a lag boiler
Boiler
On Delay
120 0 to 900 (s)
Time Delay after On Point setpoint has been reached before starting the next boiler.
Short time delay to prevent nuisance starts due to momentary temperature and
modulation rate swings.
Boiler
Off
Delay
30 0 to 900 (s)
Time Delay after the Off Point setpoint before stopping the next boiler. Short time
delay to prevent nuisance stops due to momentary temperature and modulation rate
swings.
%FR On
Delay
1 1 to 30 (m)
Time Delay after the modulation rate is above the LL Start Trigger before starting the
next boiler. Shorten time delay to avoid temperature going below setpoint as a result of
a slow process change.
%FR Off
Delay
1 1 to 30 (m)
Time Delay after the modulation rate is below the LL Stop Trigger before stopping
the next boiler. Shorten time delay to avoid temperature going above setpoint as a
result of a slow process change.
High Fire
Limit
100 40 – 100 %
High modulation rate limit for all boilers on the peer-to-peer network as long as at
least one boiler is still not running. After the last boiler has started the modulation
rate is released up to 100.
Deg/Min
Hold Off
1 1-10 F
Specifies a temperature rate of change that inhibits the next boiler being started or
stopped. If the temperature is increasing faster than this rate of change, the next
boiler is not started. Also, if the temperature is decreasing faster than this rate of
change, the next boiler is stopped.
Cutback
Setpoint
Boiler
220
100 to 240 F
Boiler outlet temperature above the Cutback Setpoint causes the modulation rate to
be reduced proportionally to help avoid a high temperature limit lockout. This
parameter is significant while the modulation rate of the boiler is controlled
according to the remote system temperature sensor, remote input (C+, C-) or Modbus
(40006).
Net Start
Dwell
120 16 to 420 (s)
The Net Start Dwell Time Delay specifies the length of time the peer-to-peer network
will wait for the Main Fuel Valve Energized input (CS) to be energized after a boiler
call for heat. If the Net Start Dwell time is exceeded before the main fuel valve is
open, the next boiler Call for Heat is immediately initiated.
Limit
Fault
Time
5 3 to 120 (s)
The Limit Fault time Delay specifies the length of time the peer-to-peer network will
wait for the boiler limits input (CA) to be energized after a boiler Call for Heat. If the
Limit Fault time is exceeded before the limits are energized, the next boiler Call for
Heat is immediately initiated.
Rotation Disable
Disable
Enable
Specifies number of hours (cumulative) a lead boiler runs before passing the lead to
another boiler.
Lead role will be surrendered earlier if the lead boiler is placed into manual mode, is
run remotely (mode 6), fails to start, is “blind” (all input sensors failed), or is
satisfying a DHWP request
Rotation
After
168 8-720 (hr)
Specifies number of hours (cumulative) a lead boiler runs before passing the lead to
another boiler.