Roberts Gorden HE35UT Manual Do Utilizador

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B
LACKHEAT
®
 HE I
NSTALLATION
 O
PERATION
 
AND
 S
ERVICE
 M
ANUAL
58 of 73
14.1.2 Heater Lockout Indicator by Volt Free 
Connector
A volt free contact relay is closed which enables the 
ROBERTS GORDON
®
 controller, BMS system, etc. to 
indicate the heater that has failed. An additional wire has 
to be installed from the heater volt free connector to the 
monitoring computer. See Page 56, Section 13.5.
14.2 Testing
Establish that a satisfactory purged gas supply and an 
electrical supply is available to the heater. Ensure that all 
time clocks and thermostats are set to call for heat.
With the gas supply cut off and the electrical supply 
isolated by switching off at the local switch, open the 
control chamber secured by the screws. Loosen the 
sealing screw from the pressure test point and remove 
the cover cap from the governor.
Turn on the gas supply and connect appliance electrical 
plug. Ensure that the timer or thermostat, if fitted, are set 
to call for full gas rate. Switch on at the local switch. The 
sequence as described should take place. If not, refer to 
detailed fault finding sequence. When flame is 
established, check the gas pressure reading and adjust if 
necessary. Refer to burner data label.
Check the gas pressure at the outlet of the gas valve. See 
Page 73, Section 18.9.1
 f
or pressure settings or refer to 
the data plate. 
Switch off the electrical supply (shutting down the heater), 
remove pressure gauge, tighten pressure test point 
screw, ensuring a tight gas seal. Replace governor cover 
cap. Replace control chamber door.
14.3 Commissioning (Multiburner)
1. Establish that a satisfactory purged gas supply and 
an electrical supply is available to the heater. 
2. ENSURE that all the dampers are in the fully open 
position.
3. With the gas supply off at each of the burners and 
the electrical supply isolated, open the control 
chamber secured by six screws.
4. Ensure that all time clocks and thermostats are set 
to call for heat.
5. Switch on the electrical supply at the main isolator. 
This will start the exhaust fan.
6. Balancing Cold Suction
Check each burner vacuum by connecting an 
inclined pressure gauge to the tee on the pressure 
switch inlet side in the burner. Adjust the damper so 
that the suction is 1.9 mbar. Repeat for each burner.
7. Start at the end burner (furthest from the exhaust 
fan) with the inclined pressure gauge connected as 
described above. Turn on the gas and electrical sup-
ply, reset the pressure switch by removing suction 
from the inlet side of the pressure switch waiting 
several seconds and reconnecting. The start up 
sequence described on Page 57, Section 14 should 
take place. If not, refer to detailed fault finding 
sequence. When flame is established, check the 
gas pressure reading and adjust if necessary. See 
data label.
Check the gas pressure at the outlet of the gas 
valve. See Page 73, Section 18.9.1 for pressure set-
tings or refer to the data plate.
Switch off the electrical supply (shutting down the 
heater), remove pressure gauge, refit pressure test-
point screw, ensuring a tight gas seal. Replace gov-
ernor cover cap.
Repeat this procedure for each burner in the sys-
tem.
Close the control chamber and secure with six 
screws.
8. Balancing Hot Suction
Reconnect all the burners on the system and allow 
them to reach full operating temperature (approxi-
mately 20 minutes). Return to each burner and 
recheck the hot suctions at the tee on the inlet to the 
pressure switch. Re-adjust the damper so that the 
hot suction of 1.7 mbar is achieved and lock the 
damper in position.
14.4 System Checks
Switch on again at the local switch to help ensure smooth 
ignition. Carry out the following system checks:
When running, turn off the gas supply at the appliance. 
The heater will immediately shut down followed by one 
attempt at restoration followed by lockout.
Linear and Double Linear only:
When running, disconnect the fan plug from the burner. 
The unit should shut down within three seconds, proving 
operation of the pressure switch.
14.5 User Instructions
After satisfactory testing, ensure that the client is fully 
aware of the operation of the system. Bring this manual to 
the attention of the user or purchaser; instruct them in the 
safe operation of the heater(s).
Description
Part Number
Connector male - Lockout Indicator
91324000
Connector female - Lockout Indicator
91324001
Wire Blue 12"
91300011
Wire Brown 12"
91300012
Description
Part Number
Connector male - Volt Free
91324000
Connector female - Volt Free
91324001
Wire Blue 7"
91300004
Wire Brown 7"
91300005
Wire Yellow 12"
91300003
Screw #8 x 3/8 Hex Wshr PHH Type 23
94961406
Base relay P2RF05E
C1050B
Relay G2R1-SN IMO 220 V 10 A
C1049B