0) instructions for pressure test gauge connection – Space Ray LTU Series Two Stage User Manual
Page 16
Form #42710010
-14-
May 2013
12.0)
INSTRUCTIONS FOR PRESSURE TEST GAUGE CONNECTION
SUPPLY PRESSURE
SUPPLY PRESSURE
SUPPLY PRESSURE
SUPPLY PRESSURE
1. The installer will provide a 1/8” N.P.T. tapped plug, accessible for test gauge connection immediately
upstream of the gas supply connection to the heater.
MANIFOLD PRESSURE
MANIFOLD PRESSURE
MANIFOLD PRESSURE
MANIFOLD PRESSURE –
–
–
– COMBINATION GAS VALVE IS FACTORY SET
COMBINATION GAS VALVE IS FACTORY SET
COMBINATION GAS VALVE IS FACTORY SET
COMBINATION GAS VALVE IS FACTORY SET
1. Turn the gas valve to the “OFF” position. Remove the 1/8” plug from the combination gas valve at the
Outlet Pressure T
Outlet Pressure T
Outlet Pressure T
Outlet Pressure Tap
ap
ap
ap below and connect a 1/8” nipple to the tapped hole. Connect the test gauge to the
nipple. Turn on the gas supply.
2. With the main burner operating, check the burner manifold pressure using a water column manometer.
Gauges that measure pressure in pounds per square inch are not accurate enough to measure or set the
manifold pressure. All measurements MUST BE
MUST BE
MUST BE
MUST BE made when this heater and all other gas burning equipment
that is connected to the gas supply system are operating at maximum capacity.
3. The combination gas valve is factory set an
The combination gas valve is factory set an
The combination gas valve is factory set an
The combination gas valve is factory set and should not require adjustment.
d should not require adjustment.
d should not require adjustment.
d should not require adjustment. If full rate adjustment is
required, remove the cover screw. Using a small screwdriver, turn the adjustment screw clockwise
to
increase or counterclockwise to decrease the gas pressure to the burner. Replace the cover screw. NOTE:
NOTE:
NOTE:
NOTE:
The step opening pressure of this gas valve is not adjustable.
The step opening pressure of this gas valve is not adjustable.
The step opening pressure of this gas valve is not adjustable.
The step opening pressure of this gas valve is not adjustable.
4. Check the burner at step pressure, observing burner ignition and flame characteristics. The burner should
ignite properly and without flashback to the orifice, and should remain lit.
GAS PRESSURE TABLE
GAS PRESSURE TABLE
GAS PRESSURE TABLE
GAS PRESSURE TABLE
GAS TYPE
GAS TYPE
GAS TYPE
GAS TYPE
MANIFOLD PRESSURE
MANIFOLD PRESSURE
MANIFOLD PRESSURE
MANIFOLD PRESSURE
SUPPLY PRESSURE
SUPPLY PRESSURE
SUPPLY PRESSURE
SUPPLY PRESSURE
High
High
High
High
Low
Low
Low
Low
Minimum*
Minimum*
Minimum*
Minimum*
Maximum
Maximum
Maximum
Maximum
Natural Gas
3.5” W.C.
1.4” W.C.
5” W.C.
14” W.C.
Propane Gas
10.0” W.C.
4.0” W.C.
11” W.C.
14” W.C.
* Minimum permissible gas supply pressure for purpose of input adjustment.