Delta PG PLUS-25 warranty Check Low Water Cut-Off Device

Start-Up Preparations

3.Fill the outer tank to correct system pressure. Correct pressure will vary with each application.

NOTICE

Typical residential system fill pressure is 12 psi. System pressure will increase when system temperature increases. Operating pressure of the system should never exceed 25 psi.

4.Allow air to escape from the outer tank by opening the automatic air vent provided with the PERFORMANCE PLUS.

5.Purge air in each zone of the primary sys- tem through the purge valve. Open air vents to allow air to be purged in the zones.

6.Once the system is completely filled and purged of all air, check the system pressure and check for leaks.

Check Low Water Cut-Off Device

- The PERFORMANCE PLUS is pro- vided with a factory installed Low Water Cut-Off device that measures system pressure of more than 10 psi.

-Remove the front jacket panel and check for continuity across the low water cut- off device wire terminals. The contacts should be closed when system pressure is greater than 10 psi.

Check For Gas Leaks

WARNING

Prior to start-up and during initial opera- tion, smell near the floor and around the unit for gas odorant or any unusual odor. Do not proceed with the start-up if there is any indication of a gas leak. Any leaks found must be repaired immediately.

WARNING

DO NOT adjust or attempt to measure gas valve outlet pressure. The gas valve is factory-set for the correct outlet pres- sure. This setting is suitable for natural gas and propane and requires no field adjustment. Attempts by the installer to adjust or measure the gas valve outlet pressure could result in damage to the valve, causing potential severe personal injury, death or substantial property damage.

WARNING

Propane installations only - The propane supplier mixes an odorant with the propane to make its presence detectable. In some cases the odorant can fade and the gas may no longer have an odor.

Prior to start-up of the unit and periodi- cally after start-up have the propane supplier check and verify the odorant level.

Table 3 : Pressure Switch Setting

PG PLUS	Natural Gas	Propane
Model	(inch w.c.)	(inch w.c.)
PG PLUS-25	1.84 " w.c. (yellow)	1.84" w.c. (yellow)
PG PLUS-30	2.7" w.c. (red)	2.7" w.c. (red)
PG PLUS-35	2.7 " w.c. (red)	2.7" w.c. (red)
PG PLUS-40	2.7 " w.c. (red)	3.35" w.c. (blue)
PG PLUS-45	2.7 " w.c. (red)	3.35" w.c. (blue)

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