Zodiac Legacy LRZ Specifications download pdf (Page 29)







Installation and Operation Manual

Legacy™ Model LRZM Pool/Spa Heater





  

1. Pump not oper-

ating

A. No power.

B. Pump defective.

C. Incorrectly wired.

A. Check circuit breakers and power source.

B. Replace pump.*

C. Recheck wiring.*

2. Pilot outage A. Inlet gas pressure too low.

B. Inlet gas pressure too high causing

an unstable blowing pilot.

C. Weak or defective thermocouple or thermopile.

D. Damaged pilot, thermocouple or thermopile.

E. Dirty pilot.

F. Plugged or undersized pilot orice.

G. Plugged burner orice(s).

A. Consult gas utility company. Inlet gas pressure to

heater should be 13.7 to 24.9 mbar on natural

gas. 24.9 to 34.8 mbar on propane gas.*

B. Pressure should be regulated within limits shown above.*

C. Replace thermocouple or thermopile.*

D. Replace.*

E. Blow dust or lint out of pilot.*

F. Clean or replace pilot orice.*

G. Remove and clean all orices.*

3. Flame roll-out at

start-up

A. Blocked ue.

B. Pilot out of position (delayed ignition).

C. Blocked heat exchanger.

D. Refractory blanket out of place.

E. Altered vent cap.

F. Low gas pressure.

A. Remove blockage.*

B. Correct pilot position.*

C. Clean and correct as necessary.*

D. Clean and correct blanket as necessary.*

E. Install an unaltered factory approved vent cap.*

F. Check and correct gas pressure.*

4. Spillage at draft

hood

A. Cold chimney.

B. Vent pipe pitches down to chimney.

C. Blocked chimney.

D. Altered draft hood.

E. Prefabricated chimney with incorrect cap.

A. Allow heater to operate ve (5) minutes to create draft action.

B. Reinstall vent pipe to pitch up from the heater to chimney.*

C. Remove blockage.*

D. Install factory-provided draft hood.*

E. Install U.L. listed vent cap.*

5. Lazy ame with

yellow tip

A. Low primary air.

B. Incorrect burner pressure.

A. Check for internal burner obstructions.*

B. Adjust burner pressure according to rating plate.*

Clean burner ports if dirty.*

6. Not enough heat A. Inadequate gas supply.

B. Low burner gas pressure.

C. Heater size inadequate.

D. Low temperature rise.

A. Gas meter too small. Gas line from meter to heater too small.*

B. Gas pressure on heater burner should be adjusted to the

values list in Table 2.*

C. Replace with heater of higher input.*

D. Check and correct water ow.*

7. Heater pounding

or knocking

A. Inadequate water ow through heater. A. Check temperature rise between inlet and outlet heater

piping. See section 11.6 for recommended range of

temperature rise. If temperature rise is above the maximum

recommended, check for closed valve in system.*

8. Heater condens-

ing

A. Low water temperature. A. Flue product moisture will condense at the start-up until the

heater water temperature reaches the normal operating

conditions.*

9. Pressure relief

valve opens

A. Restriction in water ow system at or

downstream of heater.

A. Check for proper operation of all valves, bypass valve and

any equipment between pool and heater outlet.*

10. Pilot is lit but

main burners will

not come on

A. Gas valve not at “on” position.

B. Hi-limit switches failed.

C. Pressure switch failed or out of adjustment.

D. Roll-out switch (fusible link) failed.

E. Gas valve failed.

F. Broken wire in thermostat circuit or

defective thermostat.

G. Heater wired incorrectly.

H. Vent temperature limit failed.

A. Turn knob to “on” position.

B. Investigate reason for overheating and replace hi-limit switch

as necessary.*

C. Adjust pressure switch (see Section 11.5) or replace as

necessary.*

D. Investigate reason for ame rollout and replace roll-out

switch as necessary.*

E. Check and replace gas valve as necessary.*

F. Check continuity through thermostat circuit with wires

disconnected.*

G. Check heater wiring against wiring diagram in Section 6,

correct as necessary.*

H. Thoroughly investigate the causes for vent temp limit failure,

correct the problem and replace the vent temp limit.

11. Heater short

cycles

A. Low water ow through heater.

B. Failing hi-limit switch.

A. Increase size of pump or increase piping size.*

B. Check hi-limit switches and replace as necessary.*

* Must be performed by a qualied professional pool technician.

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 39 40

Comments to this Manuals

No comments

Zodiac Legacy LRZ Specifications Page 29

Comments to this Manuals

Related products and manuals for Above ground pool accessories Zodiac Legacy LRZ