Raypak VERSA IC, Installation & Operating Instructions Manual

Page: 15 / 80

15
The items below correspond to CWP operation. Ensure VERSA
®
DIP #3 is ON to enable CWP.
MIX TYPE BOIL / PLNT BOIL
H model &
MIX DIP = ON
MIX Type assumes that each individual
unit will have the proper wiring and pipe
configuration to control its own inlet tem-
perature
MIX TARGET 50 TO 140°F 120°F MIX DIP = ON Inlet Target Temperature
MIX LOCK ON / OFF OFF MIX DIP = ON
The equipment will trigger a warning
when “MIX Target” is not reached within
7 minutes. MIX LOCK = ON Alarm and
lockout, MIX LOCK = OFF Alarm only
MIX TRIM -5 TO 5 0 MIX DIP = ON
This adjustment is for various types and
sizes of units as well as various actuator
motor speeds and types supplied by
Raypak
MIX SPEED SLOW, MED,FAST MED MIX DIP = ON This setting defines speed of response.
MIX INV ON / OFF OFF MIX DIP = ON
This option is related to the use of
spring-return actuators with a proportion-
al 2- or 3-way valve
When communication with BMS is required user must enable Modbus port using the settings below by select-
ing other than “OFF” at Mode-Modbus screen the following settings will become available.
Mode Modbus
Off, Monitor,
Temp, Rate
Off Always
Modbus Operating Mode: Off, Monitor,
Temp Control, Rate Control
Address 1 to 247 1 Modbus Off Modbus Slave Address
Data Type RTU or ASCI RTU Modbus Off Modbus Data Type
Baud Rate
2400, 9600,
19K2, 57K6,
115K
19K2 Modbus Off Communication Speed of Network
Parity None, Even, Odd Even Modbus Off
Error Detection of System. Integrator
needs this information
For detailed information refer to page 69.
MODE 2 Hydronic Systems
with Indirect DHW
This section covers single or multiple-boiler installa-
tions used for individual hydronic heating systems with
indirect DHW demand located on the system loop. The
following diagrams will show single-boiler systems
with and without CWP. The CWP diagrams will show
an individual 3-way valve at the boiler (MIX Type =
BOIL). The following piping configurations can be used
as fixed set-point or set up to work in conjunction with
an Outdoor Air Reset Sensor (S4) to adjust the target
water temperature as the outdoor air temperature
changes.
Fig. 15: MODE 2 Hydronic Single - Boiler with Indirect
DHW
Table B: MODE 1 SETUP menu
MODE 2 Single
Maximum distance not to exceed 4 pipe
diameters or 12” whichever is less