Lochinvar 1, 000 through 2 TEMPERATURE/PRESSURE Gauge, Typical Heating Boiler Installations

TEMPERATURE/PRESSURE GAUGE

This boiler is equipped with a dial type temperature/pressure gauge. This gauge is factory installed in the outlet side of the boiler bypass piping. The gauge has one scale to read system pressure and a separate scale to read water temperature in °F. The temperature/pressure gauge is provided to meet code requirements. Water temperatures can be more accurately monitored from the data provided in the Command Display.

TYPICAL HEATING BOILER

INSTALLATIONS

General Plumbing Rules

1.Check all local codes.

2.For serviceability of boiler, always install unions.

3.Always pipe pressure relief valve to an open drain.

4.Locate system air vents at highest point of system.

5.Expansion tank must be installed near the boiler and on the suction side of the system pump.

6.Support all water piping.

9.Check system pressure. Ensure a minimum of 12 PSI and not more than the rated pressure of the relief valve.

10.Review the installed gas piping from the meter to the boiler. Ensure that the gas pipe, meter and any regulators are adequately sized.

11.Review the field wiring and electrical service for both the boiler controls and pump. Ensure that the electrical service(s) is adequately sized.

12.Review wiring to an energy management system and wiring to any remote temperature sensors.

Boiler Set-Up

13.Ensure that the boiler and piping system are full of water. Bleed all air from the secondary loop and bypass piping on the boiler.

14.Check system for any water leaks.

15.Check system for installation of glycol or water treatment.

16.Turn on power to the primary system pump and the integral boiler secondary pump and verify operation.

PLACING THE BOILER

IN OPERATION

Pre-Start Check List

1.Review the location of the boiler, clearances from combustible surfaces and available service clearances.

2.Review the installed Vent System. Ensure that all vent components are Category IV material with adequate clearance from combustibles.

3.Ensure that the boiler condensate drain and all vent

system condensate drains are properly routed to an acceptable floor drain or neutralization system.

4.Ensure that an optional condensate neutralization

system is properly installed if required by codes.

5.Review the vent termination point for proper location and clearances.

6.Ensure that proper volumes of combustion and ventilation air are provided to the mechanical room. If a separate combustion air pipe is used, ensure that it is properly sized, sealed and terminated.

7.Review the water piping from the boiler to the system. The boiler must be installed in a primary/ secondary piping system. Review the diameter and equivalent length of the installed piping to and from the boiler to ensure proper flow.

8.Ensure that a properly sized primary system pump is installed with an expansion tank.

Boiler Operational Checks

17.Turn the boiler main power switch to the “ON” position and the run/stop switch to the “STOP” position.

18.Verify operation of the Excel 10 and Command Display.

19.Program the adjustable points from the Command Display.

20.Turn the run/stop switch to the “RUN” position to start boiler operation. Note: The bypass must go through the synchronization process before start-up begins.

21.Push the resets for low water level, high water temperature and flame failure.

22.	Carefully follow the bypass adjustment procedure
	to set maximum flow to the boiler at 90 GPM. Verify
	by checking temperature rise while burner is firing at
	100% of rated input.

23.Install a manometer on the gas supply to the boiler and verify minimum gas supply pressure as the burner fires at 100% of rated input.

24.Verify operation of safeties as necessary (low water cut-off, high limit, gas pressure, etc.).

25.Turn the run/stop switch to the “STOP” position.

26.Verify that all adjustable points in the Command Display are set as required.

27.Reconnect any wiring disconnected during the boiler set-up.

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