Hydrolevel 3250 User Manual download pdf (Page 5)

NOTE: The wire from ZR to the hot terminal of the indirect circulator will ensure

that indirect calls will fire to limit and receive priority over heating calls.

MULTIPLE CIRCULATORS — Typical Zone Panel with Priority Zone

ZONE/

INDIRECT

WITCH

POSITION

ZONE/

INDIRECT

SWITCH

POSITION

SINGLE CIRCULATOR — Multiple Zone Valves including Indirect, No Zone Control Panel

STEP 3B: HEATING and Indirect Water Heater – continued

NOTE: For proper operation of the boiler reset function, all heating thermostats must input to T-T or ZC-ZR terminals as indicated below.

Jumping the T-T terminals and wiring the thermostat to the primary will override the economy feature.

WIRING

WARNING

Electrical shock hazard. To prevent electrical shock, death or equipment damage, disconnect power supply before

installing or servicing this control.

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NOTE: When using zone valves for both heat and indirect, the calls must be separated in order to prioritize indirect calls. This can

be accomplished by using a general purpose relay as shown above. However, for ease of installation, a zone control panel is rec-

ommended (see wiring diagram 7 on next page).

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Hydrolevel 3250 User Manual Page 5