Specifications
Power Supply | Dedicated 120 VAC, 60 Hz., 15 A |
|
|
Current Draw | Less than 5 Amps. |
|
|
Gas Supply Connection | 1" NPT connection to gas valve for 370,000 Btu/hr. and over for natural gas, |
| ¾" NPT for rest. Schedule 40 black iron pipe recommended. |
|
|
Approved Gas Type | Natural or Propane. Gas supply must match the gas type listed on the water |
| heater rating label. |
|
|
Gas Pressure (Nat. & L.P.) | Manifold Pressure: 4.5" w.c. natural gas, 10.0" w.c. L.P. Gas Supply |
| Pressure: At least 1" above manifold pressure with water heater operating, |
| 14" w.c. maximum. |
|
|
Venting System | Atmospherically Vented, Type B venting system or approved chimney. Follow |
| current National Fuel Gas Code requirements or in Canada, the Natural Gas |
| and Propane Installation Code. |
|
|
Minimum Clearance for Servicing | 24" Front Clearance, 20" Top, 6" Sides. |
|
|
Maximum Water Supply Pressure | 150 PSI. |
|
|
Thermostat Sensor(s) | Redundant thermister with 11,900 + or - 0.5% ohms resistance at 70 deg. F. |
| Sensor inside well for lower sensor. Some models use an additional upper |
| sensor (w/o well) with same resistance values. |
|
|
Control Board | Honeywell Integrated Control Board for Temperature Control, Flue Damper, |
| and Ignition Control Functions. Operates on 24 volts AC current from |
| transformer. Some models use single sensor boards, others use two |
| sensors. |
|
|
Control Display | Honeywell LCD Control Display with Temperature Setpoint, Format, and Error |
| Code Display in User Mode, Diagnostic Functions in Service Mode. |
| Communicates with Control Board. |
|
|
Transformer | 120 VAC Primary, 24 VAC Secondary, 40 VA. |
|
|
Pilot | Intermittent Pilot with Spark Electrode and Flame Sensor monitored by Control |
| Board. |
|
|
Flue Damper | 24 VAC, 60 Hz., 80 Ma. |
|
|
Page 5
5