Raypak 5000.72A, Installation & Operating Instructions Manual

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Item Range Default User Settings When is it Displayed Description
The items below correspond to CWP operation. Turn VERSA
®
DIP #3 on to enable CWP.
MIX TYPE BOIL / PLNT BOIL H model & MIX DIP = ON
MIX Type assumes that each individ-
ual unit will have the proper wiring and
pipe configuration to control its own
inlet temperature
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 with-
in 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 sup-
plied 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 propor-
tional 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
Table D: MODE 3 SETUP menu
WH Direct DHW Applications
This section covers single- or multiple-heater installa-
tions using WH model for use on direct Domestic Hot
Water heating systems with or without CWP, used in
conjunction with a storage tank. The CWP diagrams
will show both a heater pump as well as a variable-
speed pump (MIX Type = 2). The piping configurations
below are representative of condensing and non-con-
densing heaters.
WH - Single
The tank temperature will be controlled by the System
Sensor (S3). The tank sensor must be installed in the
lower third of the tank using a drywell for proper oper-
ation. The VERSA IC
®
will provide Max Delta T
(Differential Temperature) control and will cycle the
burner if the Max Delta T is exceeded between Heater
Outlet Sensor (S1) and Heater Inlet Sensor (S2).
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 as defined in the Installation and
Operating manual.
CAUTION: Continous pumping through the unit is
not supported and may cause a non-warranty failure.