Roberts Gorden CRV-B-2 Manual Do Utilizador

26 

There are several methods of controlling CRV-Series 
systems. The options are as follows:

The ROBERTS GORDON

®  

 System Control is an 

electronic controller designed for the control of 
CORAYVAC

®

 and VANTAGE

®

 NP (multiburner only) 

systems.

The System Control is capable of giving four zones of 
burners' temperature control and power. The control 
will also give power output to as many as two pumps, 
provided that the load is not greater than 20 A and 1 
Ø. For additional electrical specifications see the 
System Control Installation, Operation and Service 
manual (P/N 10091601NA).

Electronic 24 Vac thermostats and mechanical ther-
mostats with heat anticipator can be used. The sys-
tem control offers a 24 Vac power supply to power 
electronic thermostats.
Roberts-Gordon offers a selection of low voltage 
thermostats approved for use with the system 
control.

A System Control operated system has two minutes 
post purge pump operation to completely exhaust 
products of combustion from the system. A system 
control provides indication of power to the pump and 
zones and indicates the status of the pressure switch 
with lights.

The System Control is ETL listed in accordance with 
UL873 – Standard for Temperature Indicating and 
Regulating Equipment.

The ROBERTS GORDON

®

 ULTRAVAC

™

 is a micro 

processor based control package designed for modu-
lating control of CRV-Series heaters based on outdoor 
temperatures. The controls offer full modulation 
between 60% and 100% of system maximum rated 
input.

This controller is capable of giving control outputs to 
one pump and three heating zones. The controller 
also features inputs which are used for indoor and out-
door signal condition monitoring.

System status and settings are viewed and altered 
from a PC (not supplied) running ROBERTS GOR-
DON

®

 ULTRAVAC

™

 Software. 

ROBERTS GORDON

®

 ULTRAVAC

™

 Software requires 

a PC (not supplied) running Windows

®

 95 or higher, 

with a Pentium

®

 class processor and at least 64k of 

RAM. 

 Controller, See Page 31, Section 10.