Weil-McLain GL-E223-ADOC 0311 manual Contents

AQUA PLUS indirect-fired water heaters — Product Manual

Contents

Please read before proceeding 3

When servicing water heater . . . . . . . . . . . . . .3 Operating restrictions . . . . . . . . . . . . . . . . 3 Boiler water restrictions . . . . . . . . . . . . . . . 3 Location . . . . . . . . . . . . . . . . . . . . . 3

Pre-installation		4
Codes	.	. 4
Code restrictions	.	.4
Water heater placement	.	. 4
Install levelling legs	.	. 4
Domestic water piping requirements	. .	5
Water heater operating restrictions	.	. 5
Boiler water restrictions	.	. 5
Hot Water Can Scald!	. .	. 5

Wiring — zoning with circulators				21
Wiring — zoning with zone valves				22
Water heater filling and start-up				23
Boiler water restrictions	.	. .		23
Maximum boiler-side flow rate	. .	.		. 23
Filling the domestic water tank	. .	.	.	23
Start-up and operation	.	.	.	23
Start-up checklist	.	.	.	23
Water heater temperature adjustment				24
Setting the thermostat	.	.	.	24
Hot Water Can Scald!		. .	.	24

Domestic water piping		6
Piping overview	.	6
Recirculation		8
Maintaining domestic water temperature in the supply piping		. 8
Time delay at fixtures	.	8
Balancing		8
Components required		. 8
Connecting to the water heater		8
Components		.10
Operation	. 10
Potential problems		10

Water heater maintenance	25
ANNUAL start-up by qualified service technician . . . .	. 25
Inspect anode and water heater interior	.26
Drain the water heater if necessary during shutdown periods	.26

Troubleshooting					27
Troubleshooting procedures . . . .	. . .	. .	. .	.	. 27
Preparation for troubleshooting . .	. . . .	. .	. .	.	. 27
Replacement parts					39
AHRI ratings					40

Boiler-side piping	11	Ratings with 200°F boiler supply water
Connecting to a low-pressure steam boiler	18	Ratings with 190°F boiler supply water
Filling the piping	. 19

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Boiler-side wiring and controls			20
Wiring requirements	. . . .	.	. 20
Circulators	. . . .	.	20
Zone Valves	. . . .	.	20
Wiring to the water heater	. . . .	.	. 20
Wiring options	. . . .	.	. 20
Use domestic priority	. . . .	.	20

Ratings with 180°F boiler supply water Dimensions

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2 Part number GL-E223-ADOC 0311