d.Jumper R and W/W1 thermostat connections on control to start furnace.

e.Turn medium-heat adjusting screw counterclockwise (out) to decrease manifold pressure or clockwise (in) to increase manifold pressure.

NOTE: DO NOT set medium-heat manifold pressure less than 1.3- in. wc or more than 1.7-in. wc for natural gas.

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in reduced furnace life.

DO NOT bottom out gas valve regulator adjusting screws. This can result in unregulated manifold pressure and result in excess over-fire and heat exchanger failures.

NOTE: If orifice hole appears damaged or it is suspected to have been redrilled, check orifice hole with a numbered drill bit of correct size. Never redrill an orifice. A burr-free and squarely aligned orifice hole is essential for proper flame characteristics. (See Fig. 61.)

f.Move setup switch SW4-2 to OFF position after com- pleting medium-heat adjustment.

g.Jumper R and W/W1 and W2 thermostat connections on furnace control. (See Fig. 33.) This keeps furnace locked in high-heat operation.

h.Turn high-heat adjusting screw counterclockwise (out) to decrease manifold pressure or clockwise (in) to in- crease manifold pressure.

NOTE: DO NOT set high-heat manifold pressure less than 3.2-in. wc or more than 3.8-in. wc for natural gas.

i.Remove jumpers R to W/W1 and R to W2.

j.Wait for blower off-delay to finish then reset 115-v power to furnace.

k.Jumper R and W/W1 thermostat connections on control to start furnace.

l.Wait for the blower to turn ON then check low-heat mani- fold pressure. It should be between .5 to .6-in. wc. This setting should not require adjustment but if it does re- move the low-heat adjustment cap (See Fig. 60) and turn the low-heat adjusting screw clockwise (in) to decrease manifold pressure or counterclockwise (out) to increase manifold pressure. You will only have 15 minutes to make an adjustment if needed. If you need more time then move setup switch SW1-2 on control center to ON posi- tion (See Fig. 33).

NOTE: DO NOT set low-heat manifold pressure before setting medium-heat manifold pressure. DO NOT set low-heat manifold pressure less than .5-in. wc or more than .6-in. wc for natural gas.

m. When correct manifold pressures are obtained, replace caps that conceal gas valve adjustment screws. Main burner flame should be clear blue, almost transparent. (See Fig. 62.)

n.Remove jumper across R and W/W1. If necessary move setup switch SW1-2 to the OFF position.

3. Verify natural gas input rate by clocking gas meter.

NOTE: Be sure all pressure tubing, combustion-air and vent pipes, and burner enclosure front are in place when checking input by clocking gas meter.

a.Calculate high-altitude adjustment (if required).

UNITED STATES

At altitudes above 2000 ft. (609.6M), this furnace has been approved for 2 percent derate for each 1000 ft. (304.8M) above sea level. See Table 11 for derate multi- plier factor and example.

CANADA

At installation altitudes from 2000 to 4500 ft. (609.6 to 1371.6M), this furnace must be derated 5 percent by an authorized Gas Conversion Station or Dealer. To determ-

ine correct input rate for altitude, see example and use

 

0.95 as derate multiplier factor.

 

EXAMPLE: 80,000 BTUH HIGH-HEAT INPUT

 

355CAV

FURNACE INSTALLED AT 4,300 ft. (1310.6M).

Furnace Input Rate at Sea Level X Derate Multiplier Fact-

 

or = Furnace Input Rate at Installation Altitude

 

80,000 X 0.91 = 72,800

 

b. Reinstall burner box cover.

 

 

NOTE: Clocking gas input rate MUST always be performed

 

with the burner box cover INSTALLED.

 

c. Check that gas valve adjustment caps are in place for

 

proper input to be clocked.

 

d.Obtain average heat value (at altitude) from local gas sup- plier.

NOTE: Be sure heating value of gas used for calculations is correct for your altitude. Consult local gas utility for altitude adjustment of gas heating value.

e. Check and verify orifice size in furnace. NEVER ASSUME THE ORIFICE SIZE. ALWAYS CHECK AND VERIFY.

f.Turn off all other gas appliances and pilots.

g.Move setup switch SW4-2 to ON position. (See Fig. 33.) This keeps furnace locked in medium-heat operation.

BURNER

ORIFICE

A93059

Fig. 61 - Burner Orifice

55

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Bryant 355CAV installation instructions Burner Orifice
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355CAV specifications

The Bryant 355CAV is a state-of-the-art automated vertical machining center designed to enhance precision and efficiency in the manufacturing sector. Renowned for its robust construction, this machine is engineered to handle a broad spectrum of machining tasks, making it suitable for both small and large-scale production environments.

One of the standout features of the Bryant 355CAV is its advanced CNC control system, which provides users with exceptional ease of use. The intuitive user interface allows operators to program complex machining operations with minimal effort, significantly reducing setup times. The machine's high-speed spindle achieves impressive rotational speeds, which allows for quick material removal, ultimately optimizing productivity and throughput.

The Bryant 355CAV exhibits superior rigidity and stability due to its solid cast iron frame and carefully designed structural components. This construction minimizes vibrations during machining, ensuring that even the most intricate parts are produced with high accuracy. The machine's precision ground linear guideways further enhance its performance by providing smooth motion and high load capacity.

Equipped with a large work envelope, the Bryant 355CAV enables manufacturers to accommodate various part sizes and geometries. Additionally, its automatic tool changers can hold a variety of tools, thus facilitating quick transitions between different machining operations without requiring manual intervention. This flexibility is essential for meeting the diverse needs of modern manufacturing.

Another notable characteristic of the Bryant 355CAV is its energy-efficient design. It integrates modern technologies aimed at reducing power consumption while maintaining optimum performance. This environmentally conscious approach not only cuts operational costs but also aligns with the growing demand for sustainable manufacturing practices.

Moreover, the Bryant 355CAV features advanced monitoring capabilities, allowing operators to track machine performance in real time. Data analytics from these systems can be utilized to improve operational efficiency, reduce downtime, and enhance predictive maintenance protocols.

In summary, the Bryant 355CAV is a versatile, high-performance machining center that showcases cutting-edge features and technologies. Its combination of user-friendly controls, sturdy construction, energy efficiency, and advanced monitoring positions it as a vital asset for manufacturers aiming to elevate their productivity and precision in an increasingly competitive landscape.
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