Roberts Gorden BH35ST/EF User Manual

Page of 84
B
LACKHEAT
®
  I
NSTALLATION
 O
PERATION
 
AND
 S
ERVICE
 M
ANUAL
54 of 74 
Figure 34: Gas Connection with Stainless Steel Flex Connector
INCORRECT POSITIONS (WRONG INSTALLATION)
Heater Movement
Heater Movement
Heater Movement
Heater Movement
CORRECT POSITIONS
Correct position with flex connector not supplied by Roberts-Gordon.
Burner
Stainless Steel Flexible Connector
supplied by Roberts-Gordon 1000 mm Long
Minimum Bend Radius 140 mm
Shut-Off Valve
Flex Line
Connector
45°
45°
545 mm
minimum
Gas Supply Pipe
Flexible Gas Hose
1000 mm length
300 mm
Shut-Off Valve 
(included with gas 
hose) must be parallel 
to burner gas inlet. The 
80 mm displacement 
shown is for the cold 
condition. This 
displacement may 
reduce when the 
system is fired.
80 mm 
max. displacement
Side View
Heater Movement
CAUTION
Product Damage Hazard
Hold gas nipple securely with pipe wrench 
when attaching gas hose.
Failure to follow these instructions can result 
in product damage.