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My question is this I looked a heat pump for a friend, R-22, 2 ton Nordyne. I put gauges on and let run for 15 min, suction line at air handler was to hot to touch, went outside and suction pressure had pegged my gauge. I work mostly on oil furnaces and boilers. Can I get some advice. It does have a txv
 

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The large line in heat mode, is a hot gas discharge line. Not the suction line. On the outdoor units cabinet, will be a true suction port.
 

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Use the port that is above the " normal" ones. Also if that gauge pegged that would indicate an over charge or low airflow issue. That gauge pegs at 350 retard. ( what it in says on the gauge not you Bigmike!) :)
 
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