53
Start-Up Procedures
SECTION XI - Start-Up Procedures
Final Checks Before Start-up
Verify the PERFORMANCE and the
primary and domestic systems are full
of water and all system components are
correctly set for operation.
Verify Start-up Preparation items outlined
on pages 49 thru 52 have been completed.
Verify all electrical connections are
correct and securely fasten.
Inspect vent piping and combustion air
inlet piping for signs of deterioration from
corrosion, physical damage or sagging.
Verify combustion air piping and vent pip-
ing are intact and correctly installed.
Verify Burner Configuration - Propane
Only.
Check for proper labeling on the gas
valve, combustion air inlet and the rat-
ing label for propane configuration.
If there is doubt on the burner configu-
ration, remove the gas valve and check
for proper propane orifice. See Fig. 28
page 41. Refer to Propane Conversion
Instructions for additional information
on assembly of the gas valve.
Adjustment of the Secondary Thermostat
Limit.
The Secondary (Domestic) Thermostat
located on left side of the control panel
maintains the minimum domestic water
storage temperature.
Set the thermostat knob as shown in
Fig. 38 page 56.
Maximum limit setting is 140ºF
PERFORMANCE Start-up
1. Turn the ON-OFF switch located on the front
control panel to the OFF position. Turn the
electrical supply or any external service
switch to the unit in the ON position.
2. Read and follow the Operating Instructions
outlined on page 54 to start the appliance.
If PERFORMANCE Does Not Start Correctly
1. Check for loose electrical connections,
blown fuse or open service switch.
2. Check continuity across the Low Water
Cut-Off device for close circuit.
3. Is the manual limit control open? Ensure the
manual limit is reset to the close position.
4. Is the gas supply valve open at the unit and
meter?
5. Is incoming gas supply pressure more than
5”w.c. for natural or propane with all gas
appliances operating.
6. Are the heating thermostats set below room
temperature?
If none of these conditions correct the problem,
refer to the PERFORMANCE Trouble-shoot-
ing guide.
Check the PERFORMANCE and System
Check Domestic Piping.
Check domestic piping and system
components for leaks. If found, shut
down the unit and repair immediately.
Check Primary Piping.
Check primary system piping and com-
ponents for leaks. If found, shut down
the unit and repair immediately.
Purge any remaining air from the system
piping. Air in the system piping will
interfere with circulation creating heat
distribution problems and system noise.
Check Vent Piping and Combustion Air
Piping.
Check for gas-tight seal at every con-
nection and seam of the venting and
combustion air inlet.
