Section 8: Programming And Troubleshooting The System; Passwords - Roberts Gorden CORAYVAC Installation Manual

®
ROBERTS GORDON CORAYVAC
SECTION 8: PROGRAMMING AND
TROUBLESHOOTING THE SYSTEM
The CORAYVAC ® Modulating Heating Control comes
standard with Heater and Zone programs to operate
Roberts-Gordon heating equipment. The revision of
programs are shown on touchscreen under Menu 
Maintenance - Unit.
Program features important to the user upon startup
are described below. This section will provide details
on how to modify these settings. The program
defaults to 4 CORAYVAC
zone designations are as follows: Zones 1 and 2 are
associated with Pump 1 and Zones 3 and 4 are asso-
ciated with Pump 2. The zone designations can be
re-configured via the touchscreen to any combination
desired, see Page 59, Section 8.2. It is important that
hard wired configuration matches internal programs
pump to zone association to avoid power being sent
to burners not under vacuum. The controller comes
with a standard 7am - 5pm, Monday - Friday sched-
ule for each of the heating zones. Manual occupancy
can also be started at the zone sensor or touch-
screen for a chosen length of time. The heating set-
point for the Occupied and Unoccupied states default
to 65 °F and 60 °F. Two settings exist to ensure set-
point is reached in various conditions. Modulation
Override Temperature Offset is set to 5 °F. This fea-
ture commands 100% heat if the zone temperature
falls 5 °F below setpoint. A timeout also exists such
that if the zone temperature is not within 1 °F of the
setpoint within 30 minutes, a 100% heat command is
issued. This 30 minutes is not editable. Limits on the
degree to which the setpoint can be adjusted at the
zone sensor default to +/- 5 °F. The system modu-
lates on internal and external design temperatures,
and the outside air temperature. Adjustments to the
external design temperature based on local, sea-
sonal, temperatures are important to ensure the sys-
tem is modulating properly. Default Internal and
External temps are 65 °F and 32 °F.
For VANTAGE ® Modulating unitary heaters, an initial
100% heat command is issued for 3 minutes. This
overlaps the startup procedure programmed into the
®
VANTAGE Modulating burner. After this, the VAN-
TAGE ® Modulating burner will modulate accordingly.
Post-purge operations are also programmed directly
into the VANTAGE ® Modulating burner. See VAN-
®
TAGE Modulating/VANTAGE
operation manuals (P/N 134100NA/139100NA) for
further details. For CORAYVAC
100% heat command is issued for 2 minutes. After
the heat request has been satisfied, a 2-minute post-
purge command is issued.
58
®
M H C C
ODULATING EATING ONTROL
® heating zones. The default
®
HEM installation and
® systems, an initial
I M
ONTROLLER NSTALLATION ANUAL
When networking multiple controllers together, the
Outside Air Temperature (OAT) sensor can be con-
nected locally to any controller. Once network com-
munications have been established, the OAT will be
broadcast to each controller. The controller also
comes standard with an Optimum Start feature. This
feature reads the OAT, current zone temperature,
occupied setpoint, and time left before occupancy,
and begins heating the area so that the setpoint is
reached when occupancy begins. The feature is set
to not start more than 30 minutes before scheduled
occupancy.
Notes:
• Ensure Initial Touchscreen Setup has been com-
pleted before proceeding, see Page 45, Section
5.8.
• A slight delay exists when processing information
on the touchscreen. Allow the screen to process
information before navigating away from the cur-
rent screen
• Blue text indicates an editable field. Yellow text
cannot be changed

8.1 Passwords

The touchscreen comes standard with different levels
of password protection. There is a User level and
Admin level password. The default credentials are
shown below:
User:
password: user
The end user is prompted for these credentials when
attempting to access a protected screen. Once
entered, the access level is saved until the screen
sleeps. This Inactivity Timeout can be set in the
<Menu> <Touchscreen Setup> <Inactivity Time-
out> screen. The passwords can also be changed by
the end user in the <Touchscreen Setup> <Pass-
words> screen.
The user can also login to any access level by open-
ing the Property Menu and tapping [LOGIN] at the
top right. Entering a username is not required. Simply
enter the password for the desired level of access.
Logging in as the ADMIN will grant access to both
user levels. Logout at any time by tapping [ADMIN] or
[USER] in the Property Menu.
Admin:
password: admin