Reznor RDF Unit Installation Manual Manual de usuario descargar pdf (Pagina 10)

I-RDF, PN148384R5, Page 10

Pilot Supply Pressure

These systems are designed to operate on a natural gas pilot supply pressure of 3.5"

w.c. or propane gas of 6.0" w.c. Measure both operating pressure and pilot supply

pressure with the blower in operation.

Manifold pressure is dened as the gas pressure as measured at the burner pressure

tap. Measure manifold gas pressure with the blowers operating. Minimum gas pres-

sure at the burner is typically 4.3" w.c. for natural gas or typically 1.5" w.c. for propane

gas.

FIGURE 8 - Pressure

Tap Locations for

Measuring Manifold

and Pilot Pressure

Manifold Pressure

Gas Pressure

Switches

High gas pressure switches included in the gas train monitor gas pressure downstream

from the safety valves. If the gas pressure at this point on a system equipped with a

high gas pressure switch (standard with Manifolds BM 78, 79, 80, and 81 or Option

BP2 with other manifolds) exceeds the setpoint, the switch will open the electrical

circuit to the burner, stopping all gas ow. The high gas pressure switch is a manual

reset device.

A low gas pressure switch (Option BP3) will shutoff the gas ow if the gas pressure

drops below the setpoint of the low pressure switch. The low gas pressure switch will

automatically reset when the gas pressure rises above the setpoint.

(NOTE: Model RDF units manufactured prior to April 1993 installed indoors with

optional gas pressure switches require a 3/4" vent line to the outdoors. Beginning with

units manufactured April 1993, the gas pressure switches incorporate a vent limiting

device and do not require venting to the outdoors.)

6.0 Mechanical

(cont'd)

Minimum Supply Gas Pressure ("w.c.) for Full Fire

Manifold Option BM75 BM76 BM77 BM78 BM79 BM80 BM81

with Gas Control

Option

AG1 AG3

AG 30, 31, 32, 33, 36, 37, 47, 48, or 51

Manifold Size 1" 1" 1" 1" 1" 1-1/4" 1-1/4" 2"

MBH Nat Pro Nat Pro Nat Pro Nat Pro Nat Pro Nat Pro Nat Pro Nat Pro

250 4.0 1.4 4.0 N/A 4.1 1.6 4.3 1.5 4.4 1.6 4.6 1.6 4.5 1.6 5.1 1.8

500 5.3 1.9 5.0 N/A 5.8 2.3 6.2 2.2 6.0 2.3 5.2 1.9 5.0 1.7 5.3 1.9

750 7.5 2.7 6.8 N/A 8.5 3.3 9.5 3.3 8.4 3.3 6.1 2.3 5.7 2.0 5.5 1.9

1000 12.4 4.7 11.7 4.6 7.4 2.8 6.7 2.4 5.8 2.1

1250 9.1 3.5 8.0 2.9 6.2 2.2

1500 11.2 4.3 9.6 3.5 6.6 2.4

1750 13.6 5.3 11.5 4.2 7.2 2.6

2000 16.5 6.3 13.7 5.0 7.8 2.8

2500 23.3 8.9 18.9 7.0 9.4 3.4

3000 11.3 4.1

6.1 Gas Piping and Pressures (cont'd)

Supply Pressure Requirement by Manifold Option (cont'd)





















1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 27 28

Comentarios a estos manuales

Sin comentarios

Reznor RDF Unit Installation Manual Manual de usuario Pagina 10

Comentarios a estos manuales

Relacionado con productos y manuales para Radiadores Reznor RDF Unit Installation Manual