Raypak VERSA IC, Инструкция по установке и эксплуатации

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The Heater Pump (P1) runs during any call for burner
operation and is delayed “off” as user-defined in the
SETUP menu after the burner has shut down. The
System Pump output (P2) is enabled to run whenever
the heater is enabled for operation. The Heater Pump
(P1) runs during any call-for-heat. The Heater Pump
(P1) is delayed “off” as user-defined in the BOILER
menu. The System Pump output (P2) is delayed “off”
only when the heater is disabled by opening the con-
nection across the enable/disable at the PIM™. There
is no mode to configure for WH operation as this is the
only mode available when built as a WH model unit.
The Supply Sensor (S3) MUST BE installed in the stor-
age tank and functional for heater operation. Ensure
DIP switch #1 and 2 on the VERSA
®
Control Board
must be in the ON position to make programming
MASTER
Fig. 28: WH Direct DHW Application - Multiple Heaters with CWP (VS Pump)
MASTER
Fig. 27: WH Direct DHW Application - Multiple Heaters
changes. Prior to setting any DIP switches the heater
must be turned off.
WH - Cascade
This section covers a cascade of up to 4 WH models
for use on direct Domestic Hot Water heating systems
with and without CWP using a variable-speed pump
(MIX Type = 2), in conjunction with a storage tank. The
piping configurations below are representative of a
cascade of condensing or non-condensing heaters.
NOTE: 0-10VDC firing rate control ignores all
functions except Max Delta T, CWP, Limit and Safety
Switches.