Westinghouse WBCNG399WPU Installation Instruction
62
WHL-016 REV. 3.4.15
Condensate is slightly acidic (typically with a pH of 3 to 5) and must be piped with the correct materials. Never pipe the condensate
using steel, copper, brass or other materials that will be subject to corrosion. Plastic PVC or CPVC pipe are the only approved
materials.
A condensate neutralizer, if required by local authorities, may be purchased from Westinghouse (7450P-212).
2. The boiler is equipped with a ¾ female socket weld fitting connection that must be piped to a local drain. It is very important that the
condensate line is sloped downward away from the boiler to a suitable inside drain. If the condensate outlet on the boiler is lower than
the drain, you must use a condensate removal pump, available from Westinghouse (554200). This pump is equipped with two leads
that can be connected to an alarm or another type of warning device to alert the user of a condensate overflow, which, if not corrected,
could cause property damage.
3. If a long horizontal run is used, it may be necessary to create a vent in the horizontal run to prevent a vacuum lock in the condensate
line.
4. Do not expose the condensate to freezing temperatures.
5. It is very important you support the condensation line to assure proper drainage.
using steel, copper, brass or other materials that will be subject to corrosion. Plastic PVC or CPVC pipe are the only approved
materials.
A condensate neutralizer, if required by local authorities, may be purchased from Westinghouse (7450P-212).
2. The boiler is equipped with a ¾ female socket weld fitting connection that must be piped to a local drain. It is very important that the
condensate line is sloped downward away from the boiler to a suitable inside drain. If the condensate outlet on the boiler is lower than
the drain, you must use a condensate removal pump, available from Westinghouse (554200). This pump is equipped with two leads
that can be connected to an alarm or another type of warning device to alert the user of a condensate overflow, which, if not corrected,
could cause property damage.
3. If a long horizontal run is used, it may be necessary to create a vent in the horizontal run to prevent a vacuum lock in the condensate
line.
4. Do not expose the condensate to freezing temperatures.
5. It is very important you support the condensation line to assure proper drainage.
H. FINAL CHECKS BEFORE STARTING BOILER
1. Read Start-Up Procedure, Part 10 in this manual, for proper steps to start boiler. (See Start-Up Report to record steps for future
reference.)
2. Verify the boiler and system are full of water and all system components are correctly set for operation.
3. Fill the condensate trap with water.
4. Verify electrical connections are correct and securely attached.
5. Inspect exhaust vent and intake piping for signs of deterioration from corrosion, physical damage, or sagging. Verify exhaust vent
and intake piping are intact and correctly installed per Venting Section (Part 6) and local codes.
reference.)
2. Verify the boiler and system are full of water and all system components are correctly set for operation.
3. Fill the condensate trap with water.
4. Verify electrical connections are correct and securely attached.
5. Inspect exhaust vent and intake piping for signs of deterioration from corrosion, physical damage, or sagging. Verify exhaust vent
and intake piping are intact and correctly installed per Venting Section (Part 6) and local codes.
I. CASCADE SYSTEM
1. If a single boiler is installed, skip this section.
2. Programming the Master Boiler:
2. Programming the Master Boiler:
a. Make sure there is no demand for heat being supplied to the boiler.
b. Apply power to the boiler.
c. Enter the system setting program navigation following instructions in Part 11 of this manual.
d. Verify that the cascade address function 15 is set to 0. This sets the Master Boiler
d. Verify that the cascade address function 15 is set to 0. This sets the Master Boiler
’s address as 0.
NOTE: The Master Boiler MUST be addressed as 0.
e. Change cascade mode function 23 to 926 Boiler. This makes it a Master Boiler.
f. Exit the installer menu.
e. Change cascade mode function 23 to 926 Boiler. This makes it a Master Boiler.
f. Exit the installer menu.
NOTE: In order for the system to operate properly, the temperature set point of the master must match the follower boiler set point.
NOTE: READ THE NOTES BELOW BEFORE PROGRAMMING FOLLOWER BOILERS:
The boiler addressed as 1 will share its alarm output with the master boiler.
If one of the follower boilers has an indirect fired water heater connected to it, the address of this boiler must be 2 or greater.
It is recommended but not necessary to address boilers in the order that they are wired.
No two boilers can have the same address.
It is not required to use all consecutive address numbers. Example: In a 2 boiler system with an indirect connected to the
follower, the follower address would be 2 (address 1 is not used).
follower, the follower address would be 2 (address 1 is not used).
3. Programming Follower Boilers:
a. Make sure there is no demand for heat being supplied to the master boiler.
b. Apply power to the follower boiler you are working on.
c. Enter the system settings following instructions in Part 11 of this manual.
d. Set the Cascade Address parameter 15 to 1 for the first follower, 2 for the second follower, etc., depending on which boiler
you are programming.
e. Change “CASCADE MODE” parameter to “926 BOILER”. This makes the boiler a follower and enables all data to be
transferred between boilers as needed for the system to function to full capability.
f. Exit the system menu.
d. Set the Cascade Address parameter 15 to 1 for the first follower, 2 for the second follower, etc., depending on which boiler
you are programming.
e. Change “CASCADE MODE” parameter to “926 BOILER”. This makes the boiler a follower and enables all data to be
transferred between boilers as needed for the system to function to full capability.
f. Exit the system menu.
NOTE: For the system to operate properly, the temperature set point of the follower must match that of the master boiler.