Installation Instructions | Tempest®
1. System has been sized for standard conditions. For any unusu- al conditions including elevation, high ambients, preheated air, etc., the individual components must be selected based on the maximum actual flow rates that will be encountered during operation. 2. System has been sized based on 69 mbar (27.7"w.c.) air pressure at the burner at high fire and 1"w.c. air pressure at the burner at low fire. To ensure tight shutoff of the 7216- - BP regulator at low fire, allow for a –5 mbar bias on the regulator spring. Thus the maximum gas pressure available from the 7216 regulator at high fire is 64 mbar (with 64 mbar impulse).
3. To increase the air impulse available to the 7216 (if necessary), a metering orifice or other fixed resistance component can be installed downstream between the 1196 and the air impulse line to the regulator. 4. For the components selected in Table 1, and under the condi- tions specified above, the 4441-1, -2, -3, -5, and -6 will operate with up to 30% XSF. For the 4441-4-A and -4-B, 1"w.c. of additional air impulse pressure is required to reach 30% XSF capability. In order to achieve higher XSF on any size, addition- al air pressure is required to impulse the 7216 regulator.
INSTRUCTIONS FOR ASSEMBLY AND INSTALLATION OF BURNER AIR AND GAS PETCOCKS
INSTRUCTIONS
Figure 2. Petcock Assemblies
1) Determine burner size stamped on the nameplate which is mounted on the front of the burner body. Find corresponding number for the petcock assemblies in Table 3. 2) Assemble petcocks as detailed in Figure 2 illustrations A & B. Refer to Table 1 for item description. 3) Remove pipe plugs from the burner body. Plug locations (UA, DA, UG, and DG) are cast on the burner body. 4) Replace pipe plugs with the proper petcock assembly. Tighten to ensure there is no leakage.
A
ITEM 2
ITEM 1
1849-04
B
NOTE: We recommend using liquid Teflon sealer on pipe threads.
ITEM 4
ITEM 2
5) Check for leakage during burner operation.
CAUTION: Valves must be kept in closed position when not in use.
ITEM 3
ITEM 1
1849-04-L
Table 3. Use of Petcock Assemblies Taps
Tools required: 6" adjustable wrench and pliers.
Table 1. List of Parts
Burner
UG DG UA
DA
Item No.
4442-0 through -4
B
A
B
A
Description
Quantity
4442-5 through -7
B
B
A
A
1
1⁄8 " Petcock
4 4 2 2
4441-1 through -7
A
A
A
A
2 3 4
1⁄8 " Hose Nipple 1⁄8 " × 1½" Nipple
4441-8
A
B
A
A
1⁄8 " Coupling
Note: UG, DG, UA, DA are appropriately labeled on the burner body.
Bulletin 4441M page 17
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