Adding gas heater, wiring question

[nodak]

Hello,
We are adding a Hayward gas heater (model in sig). The specs state it can take both a 120V or 240V for main power. I will have it on its own breaker from the sub panel. Pump is on 240V. My question: is one voltage setup better than the other for the heater? I'm leaning towards going with 240V. Thoughts?

 

[CJadamec]

With a gas heater there is no compelling reason to pick 240v over 110v electrically speaking.

From a cost stand point a 120v GFCI breaker is cheaper than the 240v dual pole version. So it would be slightly cheaper to wire it as 120v.

Just make sure you wire it correctly for which ever voltage you choose.

 

[randytsuch]

If heater is on 120V, you'd have to run a neutral wire in addition to the two 240v wires and ground for the pump.
This may not be a bad thing, you may want 120V by your equipment for other reasons. I have an outlet by my stuff that comes in handy.

 

[jimmythegreek]

no reason to run 240, you prob have a sub panel out by pool and pump just add a GFCI breaker in there and run it to the heater. if you want the prologic to control it get the manual for it and it will tell you what wires to connect from the heater to the upper left side low voltage connectors on the pro logic board. You should have the pump on a GFCI and the heater as well.

 

[nodak]

The reason I originally considered sticking with 240V is the heater came pre-configured for 240V. There might be a few extra steps to switch it to 120V which i'm thinking i can avoid. ultimately i'm lazy. Your right the dual pole breaker is a bit more expensive than the single, as is the 14/3 wire vs. the 14/2 wire but its not a big difference.

I already have a separate 15amp GFCI for a light and there's space on the panel to add another 15amp if needed although i can't think of anything else i would put out there.

Thanks for the comments!

 

[SDor]

Don't know if the is good or not, but my heater and pool pump are wired in the same circuit. Can't run the heater without the pump. Hence, they're both 240v.