General Gas Piping - Thermo Pride CLQS1-050T36N Installation And Operation Manual

All installations and services must be performed by qualified service personnel.
Flue gas condensate is slightly acidic with a pH of about 3.5. (A pH level of 7.0 is considered
neutral. Carbonated cola drinks with a pH of 3.1 are actually slightly more acidic than
condensate.) If local codes require an acid neutralizing kit, a kit is available from Thermo
Products under part no. 320095. Follow the instructions enclosed with the neutralizing kit for
proper installation.
10. The condensate piping in the furnace and the drain system should be flushed out at the start of every
heating season. This will ensure trouble free operation and will keep the acidity level well above a pH
of 3.4, i.e. more towards neutral.
To flush the condensate drain system, follow these steps.
a. Turn off electrical power to the furnace at the disconnecting switch and adjust the room
thermostat to "OFF", or to the lowest temperature setting.
b. Flush the drain system by removing the drain hose from the Coil Front Cover of the secondary
heat exchanger and running tap water into the open end of the tubing. Run at least a quart of
water through the drain system, until the water leaving the drain system is clear and free of
any particulate matter.
c. Replace the drain tubing by pushing it firmly onto the nipple. Make sure the spring-type hose
clamp is returned to the original position to prevent leaks.
d. If any of the electrical controls are inadvertently wetted during the flushing process, dry them
with a soft cloth and wait 24 hours before operating the furnace.
e. Adjust the room thermostat to the "HEAT" position, or to the desired temperature, and
restore electrical power to the furnace.
J. GENERAL GAS PIPING
: Because of the potential of odorant fade, a gas leak may not be detected by smell. If
this furnace is installed below grade, contact your gas supplier for a gas detector.
1. Left and right gas supply piping - These furnaces are set-up to be gas piped through either the left
or right side by using a nipple, elbow and a straight pipe.
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