Input (BTU)
NATURAL GAS
Models | Input Rate (BTU / HR) | |
|
| |
17,500 high | ||
11,700 low | ||
|
| |
20,000 high | ||
12,800 low | ||
| ||
27,000 high | ||
18,500 low | ||
| ||
Table 1 |
|
Input (BTU)
PROPANE GAS
Models | Input Rate (BTU / HR) | |
17,500 high | ||
14,000 low | ||
|
| |
20,000 high | ||
15,200 low | ||
| ||
27,000 high | ||
21,500 low | ||
|
Table 2
Electronic Models -
Electronic models have a fixed rate gas valve. Input of electronic models is shown in Table 3.
Electronic Models with Fixed Rate Gas Valve
Natural and Propane Gas
Model Series | Input Rate | |
| (BTU / HR) | |
|
| |
17,500 | ||
| ||
|
| |
20,000 | ||
27,000 | ||
|
|
Table 3
Gas Pressure - All Models
Tables 4, 5 and 6 show the appliances' gas pressure requirements:
Inlet Gas Supply Pressure
(all models)
Fuel # | Minimum | Maximum | |
|
|
| |
Natural Gas | 5.0" WC | 10.5" WC | |
(1.24 kPa) | (2.61 kPa) | ||
| |||
|
|
| |
Propane | 11.0" WC | 13.0" WC | |
(2.74 kPa) | (3.23 kPa) | ||
|
Table 4
Manifold Gas Supply Pressure
(millivolt models)
Fuel # |
|
| Low | High | |
|
|
|
|
|
|
Natural |
| (Lo) 2.2" WC | (Hi) 3.5" WC | ||
Gas |
|
| (.55 kPa) | (.87 kPa) | |
|
|
|
|
|
|
Propane |
| (Lo) 6.3" WC | (Hi) 10.0" WC | ||
|
| (1.57 kPa) | (2.49 kPa) | ||
|
|
| |||
|
|
|
|
|
|
Table 5 |
|
|
|
| |
|
|
| |||
Manifold Gas Supply Pressure |
| ||||
|
| (electronic models) |
| ||
Fuel # |
| Maximum Manifold Pressure |
| ||
Natural Gas |
| (Hi) 3.5" WC (.87 kPa) |
| ||
|
|
|
| ||
Propane |
| (Hi) 10.0" WC (2.49 kPa) |
| ||
|
|
|
|
| |
Table 6 |
|
|
|
|
Test gauge connections are provided on the front of the millivolt gas control valve, identi- fied IN for the inlet and OUT for the manifold side. A 1/8" NPT Test gauge connection is provided at the inlet and outlet side of the electronic gas control valve.
These appliances must be isolated from the gas supply piping system (by closing their individual manual
These appliances and their individual
Orifice Sizes - Sea Level to High Altitude (All Models)
These appliances are tested and approved for installation at elevations of
Burner Orifice Sizes
Elevation
Model | Nat.Gas | Propane | |
Series | drill size (inches) | drill size (inches) | |
|
|
| |
#45 (.082") * | (.048") * | ||
39L66 • | 99K780 • | ||
#44 (.086") * | #55 (.052") * | ||
60J8001 • | 19L5201 • | ||
| |||
|
|
| |
#37 (.104") * | 1/16" (.062")* | ||
24M1001 • | 21L0101 • |
Table 7 | * Standard size installed at factory | |
• Part /Cat. Number | ||
|
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Install the appliance according to the regulations of the local authorities having jurisdiction and, in the USA, the National Fuel Gas Code NFPA 54
/ANSI Z223.1 - latest edition or, in Canada, the
Gas Valve Diagrams
See Figures 1 & 2 for Millivolt models and Figure 3 For Electronic Models.
SIT Millivolt | Gas Valve | |||
HI/LO Variable |
|
| Inlet Pressure Tap | |
Flame Height |
|
| ||
|
|
|
| |
Adjustment | Manifold Pressure Tap | |||
| ||||
TPTH |
|
| OUT | IN |
|
|
|
| |
TP |
| IH | OFF |
|
|
|
| P | |
|
|
|
| |
|
|
|
| I |
|
| LOW | it | L |
TH |
| O | ||
|
|
|
| T |
|
|
| NO |
|
P |
|
|
|
|
I |
|
|
|
|
TOL |
|
|
|
|
Pilot Adjustment | Main Gas |
| ||
Screw |
| Control Knob |
| |
|
| OFF/PILOT/ON |
| |
Figure 1 |
|
|
|
|
Honeywell Millivolt | Gas Valve | |||
|
| PIEZO |
| |
PILOT |
| IGNITER | CONVERTIBLE | |
|
| |||
|
| HI/LO REGULATOR | ||
ADJUSTMENT | GAS CONTROL | |||
(adjusts flame height | ||||
SCREW | ||||
KNOB |
| and heat output) | ||
|
| |||
TP/TH |
| O |
| |
|
| NI |
| |
|
|
| L | |
|
| P | O | |
TP |
| H | ||
L | I |
| ||
| FFO TO |
|
| |
TH |
|
|
| |
WIRING | INLET | OUTLET | ||
TERM- | PRESSURE | PRESSURE | ||
INALS | TAP | TAP | ||
Figure 2 |
|
|
|
Honeywell Electronic Gas Valve
Manifold Pressure | ON / OFF Switch | ||
Port |
|
| Inlet |
|
|
| |
C |
|
| Pressure |
ONTROL | OFF ON | N | Port |
|
| I |
|
IGNITER |
|
| Electronic |
|
|
| |
|
| ISP | Gas |
|
|
| Control |
|
|
| Valve |
Figure 3