Midco Unipower V1, Инструкция по установке и обслуживанию, Страница: 13 / 40

13
Midco International Inc.
8471 95
Part 1 Installation
For 120V Burners:
1. Use a manometer to check the manifold pressure near where the valve train attaches to
the burner, see Figure 9 - item # 3 page 29.
2. Use another manometer to check the load pressure on the ratio regulator, see
Figure 9 - item # 5 page 29.
3. Modulate the burner until the load line pressure is 2.0 ″ W.C. by adjusting the input voltage to
the burner.
4. Verify that the manifold pressure is within the values given in Chart 1.
5. If necessary turn the screw on the ratio regulator, see Figures 6A and 6B below, in order to
adjust the manifold pressure. 120V Burners
Model Pressure
V1-V4 0.8-0.9 ″ W.C.
V5-V6 0.2-0.3 ″ W.C.
V7-V10 0.5-0.6 ″ W.C.
For 24V Burners:
1. Use a manometer to check the inlet pressure on the tee on the upstream side of the pilot
regulator, see Figure 10 - item # 12, page 30.
2. Use another manometer to check the main gas regulator outlet pressure on the
upstream side of the most upstream solenoid valve, see Figure 10, item # 9, page 30.
3. Turn the burner up to its actual
fi ring rate applying an input signal of 10V DC for
maximum fi ring rate
4. Con fi rm that the inlet pressure remains between the maximum and minimum values
speci fi ed on the Burner Rating Label, see Figure 7 below.
5. The main gas regulator outlet pressure should be 1 ″ W.C. higher than the minimum
pressure required fi gure on the Burner Rating Label see Figure 7 below.
a. When “Pressure Required” is 7.0 ″ set the main gas regulator outlet pressure at 8.0 ″
b. When “Pressure Required” is 10.0 ″ , set the main gas regulator outlet pressure at
11.0 ″
_____________________________________
i - Verify 120V
VI Initial
Start-up/Adjustment
for 120V and 24V
Continued
D V
erify the Ratio
Regulator
Adjustment
Table 3A. - Pressure Load Settings
Figure 6A - Dungs FRG Ratio Regulator Adjustment - Figure 6B
Figure 6.
ii - Verify 24V
UNIPOWER VA Gas Burner
®
MODEL:
SERIAL NO.:
BILL OF MATERIAL:
MINIMUM FIRING RATE: BTU/HR
FIRING RATE: BTU/HR
PRESSURE REQUIRED: W.C.
MANIFOLD PRESSURE: W.C.
MAX. CAPACITY:
BTU/HR
PRESSURE REQUIRED: W.C.
MANIFOLD PRESSURE W.C.
VOLTS AMPS HZ
PH HP
CONTROLS
MOTOR
2121-07
CHICAGO, IL 60646
NAT
No. Pl-100, 058
US
C
LISTED
L
U
®
Î
®
7”
10”
MAXIMUM INLET PRESSURE: 14” W. C.
Figure 7 Burner Rating Label