Check to ensure all the shut off valves are open. There may be one within the plumbing line that was shut off and not reopened after installation. The other possibilty is that the cartridge in the shower unit itself could be installed upside down. If this is the case then as soon as you turn the unit on it would go to straight hot. Let me know if either works. If not we'll attack it from another angle.
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Check to ensure all the shut off valves are open. There may be one within the plumbing line that was shut off and not reopened after installation. The other possibilty is that the cartridge in the shower unit itself could be installed upside down. If this is the case then as soon as you turn the unit on it would go to straight hot. Let me know if either works. If not we'll attack it from another angle.