Midco Unipower V1, Инструкция по установке и обслуживанию, Страница: 14 / 40

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Midco International Inc.
8471 95
6. Use a manometer to check the manifold pressure near where the valve train attaches to
the burner, see Figure 10 - item # 3 page 30.
7. Use another manometer to check the load pressure on the ratio regulator, see
Figure 10 - item # 5 page 30.
8. Modulate the burner until the load line pressure is 2.0 ″ W.C. by adjusting the input
voltage to the burner.
9. Verify that the manifold pressure is within the values given in Chart 2 page 15.
10. If necessary turn the screw on the ratio regulator, see Figure 6A & 6B below, in order to
adjust the manifold pressure.
24V Burners
Model Pressure
V1- V2 0.8-0.9 ″ W.C.
__________________________________________
1. With the burner o ff , install a barb fi tting on the ⅛″ NPT pressure tap downstream of the ratio
regulator. See Figure 9 item #3 (page 20) for location.
2. Use
fl exible tubing to hook-up a manometer to the barb fi tting.
3. Turn the burner on and adjust the temperature controller to its maximum setting. Measure the
manifold pressure and compare it to Chart 1 for 120V burners and Chart 2 & 3 for 24V burners.
For 120V Burner Models
4. Adjust the high fi re by turning the span knob on the 120V burner SCEBM-2 board. Measure
the manifold pressure and refer to the Chart 1 for the 120V burner to match the manifold pressure
to the desired fi ring rate.
VI Initial
Start-up/Adjustment
for 120V and 24V
Continued
D V
erify the Ratio
Regulator
Adjustment
Continued
Table 3B. - Pressure Load Settings
E -
High Fire
Adjustment
i - Adjustment 120V
V1
V2
5
4
1.5
1
2.5
2
3.5
3
4.5
0.5
0
0 3500 3000 2500 2000 1500 1000 500
Manifold
Pressure
(Inches W.C.)
Firing Rate (mbtu/hr)
4000
V9 - V10 V7 - V8
V5 - V6
V3 - V4
Chart 1 - Manifold Pressure vs. Firing Rate - VA 120V Burners
Part 1 Installation