W. Va. Code § 8-15-8c
(c) Unless the insured has executed a specific written rejection of such coverage in the policy, any insurer who has sold, issued or delivered an insurance policy providing liability coverage to any person, company or other organization who donates fire control or rescue equipment is barred and estopped from asserting the civil immunity granted to the insured by this section against claims or suits covered by the terms of the policy, up to the limits of the policy.
The limitation on civil liability set forth in the provisions of this section applies only to policies of insurance issued or renewed on or after July 1, 2001.