AERCO RECON 1000 - Manual (Page 98)

RECON Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 6 – MAINTENANCE
Page 98 of 178 AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 OMM-0103_0A
PRI: 10/28/2014 Phone: 800-526-0288 GF-147
6.12 SHUTTING THE WATER HEATER DOWN FOR AN EXTENDED PERIOD OF
TIME
If the unit is to be taken out of service for an extended period of time (one year or more),
complete the following procedures.
Extended Period Shut-Down
1. Set ON/OFF switch on the front panel to the OFF position to shut down the heater’s operating
controls.
2. Disconnect AC power from the unit.
3. Close the water inlet and outlet valves to isolate the unit.
4. Close the external gas supply valve.
5. Open the P&T relief valve (see Figure 5-9, above) to vent water pressure.
6. Use a strap or clamp to open top vent and drain at the bottom. Keep them open unit is
completely drained of all water, and then remove the strap or clamp. Note that water left in
the unit may subject the shell and heat exchanger to microbial attack, which could lead
to failure of heat exchanger and/or outer shell.
6.13 PLACING THE HEATER BACK IN SERVICE AFTER A PROLONGED
SHUTDOWN
After a prolonged shutdown (one year or more), the following procedures must be followed:
Placing Heater Back In Service After Prolonged Shutdown
1. Review installation requirements included in Chapter 2.
2. Inspect all piping and connections to the unit.
3. Inspect exhaust vent, air duct (if applicable).
4. Perform initial startup per Chapter 4.
5. Perform safety device testing and scheduled maintenance procedures per Chapters 5 and 6
of this manual.