Installation & Operation Manual
10
Check for gas leaks
WARNING
Propane boilers only – Your propane supplier mixes an odorant with the
WARNING
WARNING
Before starting the boiler, and during initial operation, smell near the floor and around the boiler for gas odorant or any unusual odor. Remove the top access panel and smell the interior of the boiler enclosure. Do not proceed with startup if there is any indication of a gas leak. Use an approved leak detection solution. Repair any leaks at once.
DO NOT adjust or attempt to measure gas valve outlet pressure. The gas valve is factory set for the correct outlet pressure. This setting is suitable for natural gas and propane, requiring no field adjustment. Attempting to alter or measure the gas valve outlet pressure could result in damage to the valve, causing potential severe personal injury, death, or substantial property damage.
propane to make its presence detectable. In some instances, the odorant can fade, and the gas may no longer have an odor. Before startup (and periodically thereafter), have the propane supplier verify the correct odorant level in the gas.
Check thermostat circuit(s)
1. | Disconnect the two external wires connected to the room |
| thermostat terminals on the connection board. |
2. | Connect a voltmeter across these two incoming wires. |
| Close each thermostat, zone valve, and relay in the |
| external circuit one at a time and check the voltmeter |
| reading across the incoming wires. |
3. | There should NEVER be a voltage reading. |
4. | If a voltage does occur under any condition, check and |
| correct the external wiring. (This is a common problem |
| when using |
Figure 10-1 Condensate Trap
RETAINING
SCREW
2” PVC CAP WITH
BLOCKED DRAIN SWITCH
PVC TEE ASSEMBLY (FACTORY SUPPLIED)
CONDENSATE FROM
HEAT EXCHANGER 
TO FLOOR
DRAIN
5. Once the external thermostat circuit wiring is checked |
and corrected if necessary, reconnect the external |
thermostat circuit wires to the connection board. Allow |
the boiler to cycle. |
Inspect/fill condensate system
Inspect/check condensate lines and fittings
1.Inspect the condensate drain line, condensate PVC fittings and condensate trap.
Fill condensate trap with water
1.Remove the PVC cap retaining screw from the PVC cap (FIG.
2.Remove the 2 inch PVC cap with the switch located at the top of the trap (FIG.
3.Fill with fresh water until the water begins to pour out of the drain.
4.Replace the cap. Press the cap onto the trap until the cap makes contact with the drain.
5.Replace the retaining screw.
The condensate trap (FIG.
operation to avoid flue gas emission from the condensate drain line. Failure to fill the trap could result in severe personal injury or death.
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