49
9. Replace the Natural Gas Venturi with the Propane
Venturi (see Fig 52).
10. Re-install (3) screws to secure the Propane
Venturi to Blower.
11. Re-install Gas Valve assembly to Venturi by secur-
ing the union between them.
12. Tighten union to secure supply line to Gas valve.
13. Turn manual valve back on.
14. See “Gas Valve Adjustment” before running boiler.
GAS VALVE ADJUSTMENT
A Gas Valve adjustment is required to attain optimal
performance from the boiler when
replacing
one or
converting
gas. These instructions must be followed
by a trained qualified technician or manufacturing
representative.
Valve adjustment throttle locations are indicated on
Figure 53.
Setting Hi Fire Throttle:
1. Turn the needle down (clockwise) until the needle
bottoms out.
2. Follow Table U below for the number of 360°
counter-clockwise turns needed for each model
and Gas Type.
3. Once adjustment is made, turn heater on.
4. Adjust 0-10 VDC SIGNAL to 10 VDC.
5. Wait until “FIRE RATE” reaches 100%.
6. Adjust Hi Fire Throttle (see Fig. 53)) to get within
the combustion range required.
Setting LO Fire Offset (while heater is running on
LO Fire):
1. Adjust 0-10 VDC signal to 1 VDC.
2. Wait until Blower RPM reaches 1300 RPM.
3. Using an Allen wrench turn the Offset slightly
clockwise to increase CO
2
values (see Fig. 53).
4. Adjust 0-10 VDC signal back to 10 VDC.
5. Verify combustion is still within range given in
Table U. Adjust if necessary.
Fig. 52: Propane Venturi
BLOWER
B
BLO
BLOW
BLOWE
BLOWER
SCREW
BLOWER
SCREW
SCREW
BLOWER
SCREW
SCREW
VENTURI
VENTURI
Fig. 53: Setting Hi Fire Throttle / LO Fire Offset
HI FIRE THROTTLE
HI FIRE TH
HI FIRE THRO
HI FIRE THROT
HI FIRE THROTT
HI FIRE THROTTL
HI FIRE THROTTLE
(FLAT SCREWDRIVER)
HI FIRE THROTTLE
(FL
HI FIRE THROTTLE
(FLA
HI FIRE THROTTLE
(FLAT SCREWDRIVER)
LO FIRE OFFSET
HI FIRE THROTTLE
(FLAT SCREWDRIVER)
L
HI FIRE THROTTLE
(FLAT SCREWDRIVER)
LO FIRE OFFSET
(ALLEN WRENCH)
HI FIRE THROTTLE
(FLAT SCREWDRIVER)
LO FIRE OFFSET
(ALLEN WRENCH)
GAS VALVE
GAS
GAS VA
GAS VALV
GAS VALVE
CAUTION:
Adjust the proper throttle on Hi Fire
and/or Offset on LO Fire. Adjustment of the LO fire
offset while the heater is running on Hi Fire may
cause the valve to work improperly and vice versa.
Table U: Gas Valve Settings
GAS VALVE & COMBUSTION SETTINGS - NATURAL GAS
Model
HI Fire
LO Fire
Turns
Manifold
CO
2
(%)
CO (ppm)
CO
2
(%)
CO (ppm)
MIN NOMINAL MAX
MAX
MIN NOMINAL MAX
88AR
3-1/2
-0.1 ±0.05"WC
8.8
9.4
10.5
200
8.5
9.1
10.8 Less than
100
108AR
3-1/2
198AR
4-1/2
-2.0 ± 0.1"WC
278AR
5-3/4
-2.1 ± 0.1"WC
398A
5
-3.4 ± 0.2"WC
GAS VALVE & COMBUSTION SETTINGS - PROPANE GAS
Model
HI Fire
LO Fire
Turns
Manifold
CO
2
(%)
CO (ppm)
CO
2
(%)
CO (ppm)
MIN NOMINAL MAX
MAX
MIN NOMINAL MAX
88AR
3-1/2
-0.1 ±0.05"WC
10.2
10.5
10.8
200
9.9
10.2
10.5 Less than
100
108AR
3-1/2
198AR
4
-1.4 ± 0.1"WC
278AR
4-1/4
-2.0 ± 0.1"WC
398A
4
-3.0 ± 0.2"WC
Содержание 88AR-398A
Страница 18: ...18 Fig 13 MODE 1 Single Boiler Primary Secondary Piping...
Страница 19: ...19 Fig 14 MODE 2 Single Boiler Primary Secondary Piping with Indirect DHW on System Loop...
Страница 20: ...20 Fig 15 MODE 3 Single Boiler Primary Secondary Piping with Indirect DHW on Boiler Loop...
Страница 47: ...47 WIRING DIAGRAM Fig 46 Wiring Diagram...
Страница 54: ...54 Fig 55 Boiler Lighting Shut Off Instructions...
Страница 65: ...65 ILLUSTRATED PARTS LIST...
Страница 66: ...66...
Страница 67: ...67...
Страница 68: ...68 www raypak com Raypak Inc 2151 Eastman Avenue Oxnard CA 93030 805 278 5300 Fax 805 278 5468 Litho in U S A...