Reznor MAPS - A,B,C Users Manual Bedienungsanleitung PDF herunterladen (Seite 28)

Form O-MAPSIII&IV Cabinets A/B/C, Page 28

Ball Valve with actuator removed

Ball Valve Actuator

Modulates the Gas Flow

Actuator

Set Screw

(shown on the

right or closed

position)

Ball Valve Shaft

FIGURE 17B - Ball Valve with Actuator in Modulating Gas Control (Option AG70) Manifold

Modulating System

Gas Valve (Ball

Valve and Actuator)

Adjustment

4.3 Gas Train

(cont'd)

Inspect the position of the ball valve shaft.

□ In the fully open position, the dash marks on the top of the shaft should be aligned

with the gas piping.

□ In the fully closed position, the dash marks on the top of the shaft should be

aligned at a 90° angle across the gas piping.

If the ball valve shaft is not properly aligned or if the manifold pressure does not match

the settings in the chart below, the ball valve will need to be adjusted.

FIGURE 17A -

Ball Valve and

Actuator in Gas

Control Option

AG70

Manifold Pressures

for MAPS

III&IV Gas

Modulation System

Manifold Pressure (" w.c.) Measured

at the Pressure Tap by the Gas Transducer

Cabinet and Heat

Section Size

Gas

Type

High Setting

100% on ModHeat

Low Setting

0% on ModHeat

A-Cab 100 Nat 3.4" w.c. 0.15" w.c.

A-Cab 150 Nat 3.4" w.c. 0.15" w.c.

A-Cab 200 Nat 3.4" w.c. 0.15" w.c.

A-Cab 100 LP 10.0" w.c. 0.5" w.c.

A-Cab 150 LP 10.0" w.c. 0.5" w.c.

A-Cab 200 LP 10.0" w.c. 0.5" w.c.

B-Cab 250 Nat 3.4" w.c. 0.15" w.c.

B-Cab 300 Nat 3.4" w.c. 0.15" w.c.

B-Cab 250 LP 10.0" w.c. 0.45" w.c.

B-Cab 300 LP 10.0" w.c. 0.45" w.c.

C-Cab 400 Nat 3.4" w.c. 0.2" w.c.

C-Cab 500 Nat 3.4" w.c. 0.2" w.c.

C-Cab 600 Nat 3.4" w.c. 0.2" w.c.

C-Cab 700 Nat 3.4" w.c. 0.2" w.c.

To adjust gas modulation follow instructions below:

1. Checking modulation requires a manometer capable of reading to 0.10" w.c. Connect the manometer as

instructed in Step 1.f) below.

To check and adjust the modulation system, the IQ controller must be in Test Mode. On the control display in the

electrical compartment, follow the steps below to enter Test Mode.

4.0 Gas Heat

Section

Maintenance

(cont'd)

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 39 40

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