York YVC, YWC Installation, Drain Piping, Drain Pan, FORM 115.20-NOM31006, York International

FORM 115.20-NOM3 (1006)

INSTALLATION

6.Avoid rapid quenching of solder joints, as this will produce joints of inferior quality.

7.The valve package will not support the weight of the connecting pipes. All pipes, which are connected to the units, must be completely supported prior to connection to the unit.

8.Provisions must be made for expansion and con- traction of piping systems. All horizontal and vertical risers, including runouts, must be able to withstand significant movement with temperature changes. Failure to do so will result in damage and failure of piping, fittings and valves throughout the building.

9.Never insulate the heads or motorized portion of control valves. Damage can occur in the form of excessive heat build up and interference to the operation and moving parts will result.

10. All piping made in the field should be installed with consideration of additional space for any electrical routing that may be required.

11.Hydronic systems are not designed to hold pres- surized air and should only be tested with water.

After the system has been proven leak free, all lines and valve control packages must be insulated as specified on the building plans.

Many valve packages will not phys- ically allow all components to fit over an auxiliary drain pan. It is the installers responsibility to ensure ad- equate condensation prevention. The installer must also ensure that there is no condensate drippage onto elec- trical components beneath insulated components.

DRAIN PIPING

Drain line installation must adhere to all code requirements. The plastic auxiliary drain pan is to be located under the coil/valve connections supported by its mounting bracket. Make sure drain pan is level for proper drainage.

The auxiliary drain pan connection is suitable to receive a standard 3/4” PVC coupling or elbow. Route the condensate line such that it will have adequate slope from the pan to the drain. After condensate line has been run, make sure plastic drain line from blower plate nipple is routed to plastic auxiliary drain pan and plastic cap is installed on other nipple on the blower plate.

Note the 1-1/2” x 4-I/2” indentation in the plastic drain pan (see Figure 6). This area is provided for the supply and return runouts if they are brought up from below the pan. All piping must be well insulated to prevent sweating.

Remove or cover the secondary drain pan before soldering the supply and return coil connections as hot solder or the torch flame may damage the pan.

00182VIP

FIG. 6 - DRAIN PAN

6 YORK INTERNATIONAL