Section 13: Starting The System; Checking The Gas Line; Checking The Electrical System; Starting The System - Roberts Gorden CoRayVac CRV-B-2 Installation, Operation & Service Manual

SECTION 13: STARTING THE SYSTEM

DANGER
Electrical Shock Hazard
Disconnect electric
before service.
More than one
disconnect switch may
be required to
disconnect electric from
heater.
Heater must be
connected to a properly
grounded electrical
source.
Failure to follow these instructions can result in death, electric shock, injury or property damage.
Start with the main gas valve closed and the electric
power off.

13.1 Checking the Gas Line

1. Open the main valve and verify that no gas is
flowing through the meter.
2. Purge the line if this was not done following
pressure testing with air.
3. Verify that the gas pressure is not above
14'' wc (1/2 PSIG).
4. Close the main gas valve.

13.2 Checking the Electrical System

1. See that all temperature setpoints are set below
room temperature.
2. Turn on power supply to system controls.
3. Check to see that no part of the system (i.e.
burners, pump or air supply blower) is powered.
4. Individually check each zone by raising the zone
temperature set points separately. Raising each
zone temperature set point above room
temperature should start the pump immediately.
After a 45 second delay, the burners will begin
their ignition sequence by sparking at the
electrode (visible through the burner window).
Explosion Hazard
Leak test all compo-
nents of gas piping
before operation.
Gas can leak if piping
is not installed
properly.
Do not high pressure
test gas piping with
equipment connected.
WARNING
Carbon Monoxide Hazard
Heaters installed
unvented must be
interlocked with sufficient
building exhaust.
Heaters must be installed
according to the
installation manual.
5. Make a preliminary vacuum check at burners in
branches that have an adjustable damper
coupling. See Page 65, Figure 42 for manome-
ter hookup to check vacuum. This check is to
insure that all dampers are open before the
system is fired. Vacuum, as measured at the
end vents, should be approximately 3.5'' wc or
slightly above (cold).

13.3 Starting the System

NOTE: During the initial firing, the protective oil on
the tubing may smoke for 30 to 60 minutes and
adequate ventilation should be provided.
1. Start with all temperature setpoints below room
temperature.
2. Open main gas valve.
3. Turn up temperature setpoints one zone at a
time, waiting to see that all burners in a zone
start. When the burner ignites, a blue flame will
be observed through the viewer window.
4. If any abnormal operation occurs, see the trou-
bleshooting section of the service instructions.

13.4 Setting the Vacuum

1. Set temperature setpoints above room tempera-
ture. See that all burners are operating properly.
SECTION 13: S T S
TARTING HE YSTEM
Burn Hazard
Allow heater to cool
before service.
Tubing may still be
hot after operation.
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