Schwank STSV - Manual (Page 22)

22
STV-JZ I&O Manual
IM090512
RD: MAY 2009
RL: 08A- BA
· Do not loosen or remove the fifth nut directly below the burner flange
· Secure suspension chain to eye hook in order to stabilize burner—angle chain back over
burner 6 to 10 inches to allow for heater expansion.
Angle burner support
chain back over
burner
d) Install bottom bolts and nuts and snug to align the two flanges
e) TIGHTEN THE BOLTS IN AN OPPOSITE CORNER SEQUENCE AND ENSURE
THAT THE BURNER IS IN HORIZONTAL ALIGNMENT WITH THE TUBE
13) The ‘center of gravity’ of the burner is slightly off-center that of the tube system.
In order to prevent rotation of the burner:
 Install support chain from the burner eye hook to a point approximately 6 to 10
inches (15 to 25 cm) back over the burner away from the first tube hanger to allow
expansion of the system
 DO NOT fasten chain from the burner eye hook to the first hanger suspension point
 The support chain angled back over the burner will allow “straight back” movement
of the burner when the system heats and expands.
FIGURE 12 BOLT BURNER TO FLANGED TUBE
6” MIN
Gasket
Install Vacuum Assembly at Vent End
1) Slide a tube coupler onto the vacuum assembly.
2) Slide vacuum assembly over the swage of the last tube
3) Orient the discharge of the vacuum assembly for horizon-
tal or vertical venting
4) Slide the tube coupler into position—half on tube, half on
vacuum assembly
5) Tighten coupler bolts to 40 ft-lbs with torque wrench
6) Install wiring from vacuum pump to thermostat and burner
(See wiring diagram
FIGURE 13
VACUUM PUMP