Raypak VERSA IC, Инструкция по установке и эксплуатации

Страница: 30 / 80

30
The tank temperature will be controlled by the System
Sensor (S3a). The tank sensor must be installed in the
lower third of the tank using a drywell for proper oper-
ation. The VERSA IC
®
control system will provide Max
Delta T control to cycle the burner if the Max Delta T is
exceeded between Heater Outlet Sensors (S1a-b-c-d)
and Heater Inlet Sensors (S2a-b-c-d).
In order to enable MIX settings, VERSA
®
DIP #3 must
be set to ON position. Raypak’s Cold Water Protection
system utilizes a variable-flow pumping system to
inject just the right amount of water from the main sys-
tem loop into the heater loop to maintain the optimum
inlet temperature (S2) as defined in the Installation
and Operating manual for the product being installed.
The variable-flow pumping system pump will operate
in parallel with the pump mounted on the heater.
The Heater Pumps (P1a-b-c-d) run during any call for
the associated heaters burner operation and is
delayed “off” as user-defined in the BOILER menu
after the associated heater burner has shut down. The
System Pump output (P2a) is enabled to run whenev-
er the heater is enabled for operation. The System
Pump output (P2a) is delayed “off” only when the
Item Range Default User Settings When is it Displayed Description
BOILER 1, 2, 3, 4 ON <> OFF OFF Cascade Followers present FT_Bus 1, 2, 3, 4 are
connected
The following settings are available in the SETUP/ADJUST Menu:
Target
EMS
Modbus
Not Visible
EMS = Temp/Rate
Modbus = Temp/Rate
EMS = Energy
Management System
(Analog Target
Temperature)
MODB = Modbus
TANK SETP 50 TO 150
°F
125
°F
PIM™ Identity is WH
WH Setpoint
Temperature
TANK DIFF 2 to 10
°F
5
°F
PIM™ Identity is WH
WH Differential
Temperature
Sys. Purge
OFF, 0:20 to 20:00
min
0:20 min
Modbus
Temp/Rate
PIM™ DIP = Purge On
Sets the length of the
System Pump Purge
Units °F or °C °F Always
Show Units Using Icons
in Display
heater is disabled by opening the connection across
the enable/disable at the PIM™. It is recommended
the system pump be connected in parallel from each
cascade follower, to allow the system pump to be func-
tional during limp-along operation, if used.
There is no mode to configure for WH operation as this
is the only mode available when built as a WH model
unit. Ensure DIP switches #1 and 2 on the VERSA
®
master Control Board must be in the ON position to
make programming changes. Prior to setting any DIP
switches the heater must be turned off. It is important
to remember to enable a heater to be a follower in the
cascade by turning DIP switch #2 on the VERSA
®
Control Board to the "OFF" position for each of the fol-
lowers. For followers equipped with CWP DIP #3 must
be ON.
To enable Follower heaters, scroll to the SETUP menu
and, using the item button, scroll to the individual
heaters and toggle from OFF to ON to allow them to
operate when commanded by the Master to run.
The next menu items are not necessarily in the order
in which they will appear.
Enable followers from appropriate BOILER menu at the master: