For me only logo has H1, article’s title is H2.
As regards logo – to change see templatesja_teline_iiilayoutsblocksheader.php
<div class=”logo-text”>
<h1><a href=”index.php” title=”<?php echo $siteName; ?>”><span><?php echo $logoText; ?></span></a></h1>
<p class=”site-slogan”><?php echo $sloganText;?></p>
</div>
about article titles – templatesja_teline_iiihtmlcom_contentarticledefault.php
[php]
<?php if ($this->params->get(‘show_page_title’, 1) && $this->params->get(‘page_title’) != $this->article->title) : ?>
<div class=”componentheading<?php echo $this->escape($this->params->get(‘pageclass_sfx’)); ?>”><?php echo $this->escape($this->params->get(‘page_title’)); ?></div>
<?php endif; ?>
[/php]
I don’t see H2 tag here, it seems to be taken by $this->params->get(‘page_title’)